| 释义 |
cement
ce·ment C0193700 (sĭ-mĕnt′)n.1. a. A building material made by grinding calcined limestone and clay to a fine powder, which can be mixed with water and poured to set as a solid mass or used as an ingredient in making mortar or concrete.b. Portland cement.c. Concrete.2. A substance that hardens to act as an adhesive; glue.3. Something that serves to bind or unite: "Custom was in early days the cement of society" (Walter Bagehot).4. Geology A chemically precipitated substance that binds particles of clastic rocks.5. Dentistry A substance used for filling cavities or anchoring crowns, inlays, or other restorations.6. Variant of cementum.v. ce·ment·ed, ce·ment·ing, ce·ments v.tr.1. To bind with or as if with cement.2. To cover or coat with cement.v.intr. To become cemented.Idiom: in cement Firmly settled or determined; unalterable: The administration's position on taxes was set in cement despite the unfavorable public response.
[Middle English, from Old French ciment, from Latin caementum, rough-cut stone, rubble used in making concrete, from caedere, to cut; see kaə-id- in Indo-European roots.]
ce·ment′er n.cement (sɪˈmɛnt) n1. (Building) a fine grey powder made of a mixture of calcined limestone and clay, used with water and sand to make mortar, or with water, sand, and aggregate, to make concrete2. a binder, glue, or adhesive3. something that unites or joins; bond4. (Dentistry) dentistry any of various materials used in filling teeth5. (Geological Science) mineral matter, such as silica and calcite, that binds together particles of rock, bones, etc, to form a solid mass of sedimentary rock6. (Anatomy) another word for cementumvb (tr) 7. to reinforce or consolidate: once a friendship is cemented it will last for life. 8. to join, bind, or glue together with or as if with cement9. (Building) to coat or cover with cement[C13: from Old French ciment, from Latin caementum stone from the quarry, from caedere to hew] ceˈmenter nce•ment (sɪˈmɛnt)
n. 1. any of various calcined mixtures of clay and limestone, usu. mixed with water and sand, gravel, etc., to form concrete, that are used as a building material. 2. any of various soft, sticky substances that dry hard or stonelike, used esp. for mending broken objects or for making things adhere. 3. the compact groundmass surrounding and binding together the fragments of clastic rocks. 4. anything that binds or unites. 5. a. a hardening, adhesive, plastic substance, used in the repair of teeth. b. cementum. v.t. 6. to unite by or as if by cement: an experience that cemented our friendship. 7. to coat or cover with cement. v.i. 8. to become cemented; cohere. [1250–1300; ciment < Old French < Latin cēmentum,caementa rough stone from the quarry <caed(ere) to cut] ce•ment′a•ble, adj. ce•ment′er, n. ce•ment′less, adj. pron: See police. cement
Past participle: cemented
Gerund: cementing
| Present |
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| I cement | | you cement | | he/she/it cements | | we cement | | you cement | | they cement |
| Preterite |
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| I cemented | | you cemented | | he/she/it cemented | | we cemented | | you cemented | | they cemented |
| Present Continuous |
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| I am cementing | | you are cementing | | he/she/it is cementing | | we are cementing | | you are cementing | | they are cementing |
| Present Perfect |
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| I have cemented | | you have cemented | | he/she/it has cemented | | we have cemented | | you have cemented | | they have cemented |
| Past Continuous |
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| I was cementing | | you were cementing | | he/she/it was cementing | | we were cementing | | you were cementing | | they were cementing |
| Past Perfect |
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| I had cemented | | you had cemented | | he/she/it had cemented | | we had cemented | | you had cemented | | they had cemented |
| Future |
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| I will cement | | you will cement | | he/she/it will cement | | we will cement | | you will cement | | they will cement |
| Future Perfect |
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| I will have cemented | | you will have cemented | | he/she/it will have cemented | | we will have cemented | | you will have cemented | | they will have cemented |
| Future Continuous |
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| I will be cementing | | you will be cementing | | he/she/it will be cementing | | we will be cementing | | you will be cementing | | they will be cementing |
| Present Perfect Continuous |
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| I have been cementing | | you have been cementing | | he/she/it has been cementing | | we have been cementing | | you have been cementing | | they have been cementing |
| Future Perfect Continuous |
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| I will have been cementing | | you will have been cementing | | he/she/it will have been cementing | | we will have been cementing | | you will have been cementing | | they will have been cementing |
| Past Perfect Continuous |
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| I had been cementing | | you had been cementing | | he/she/it had been cementing | | we had been cementing | | you had been cementing | | they had been cementing |
| Conditional |
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| I would cement | | you would cement | | he/she/it would cement | | we would cement | | you would cement | | they would cement |
| Past Conditional |
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| I would have cemented | | you would have cemented | | he/she/it would have cemented | | we would have cemented | | you would have cemented | | they would have cemented |
Thesaurus| Noun | 1. |  cement - concrete pavement is sometimes referred to as cement; "they stood on the grey cement beside the pool"concrete - a strong hard building material composed of sand and gravel and cement and water | | 2. | cement - a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortarbuilding material - material used for constructing buildingshydraulic cement, Portland cement - a cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the resultconcrete - a strong hard building material composed of sand and gravel and cement and watermortar - used as a bond in masonry or for covering a wall | | 3. | cement - something that hardens to act as adhesive materialadhesive, adhesive agent, adhesive material - a substance that unites or bonds surfaces togetherglue, mucilage, gum - cement consisting of a sticky substance that is used as an adhesiveputty - a dough-like mixture of whiting and boiled linseed oil; used especially to patch woodwork or secure panes of glassiron putty - a cement resembling putty; made by mixing ferric oxide and boiled linseed oil; is acid resistantred-lead putty - a cement resembling putty; made by mixing white and red lead in boiled linseed oil; used as luting on pipe fittingsmastic - a pasty cement used as an adhesive or filler | | 4. | cement - any of various materials used by dentists to fill cavities in teethfilling, fill - any material that fills a space or container; "there was not enough fill for the trench" | | 5. | cement - a specialized bony substance covering the root of a toothcementumsolid body substance - the solid parts of the bodytooth root, root - the part of a tooth that is embedded in the jaw and serves as support | | Verb | 1. | cement - make fast as if with cement; "We cemented our friendship"bind - make fast; tie or secure, with or as if with a rope; "The Chinese would bind the feet of their women" | | 2. | cement - cover or coat with cementcoat, surface - put a coat on; cover the surface of; furnish with a surface; "coat the cake with chocolate"cement - bind or join with or as if with cement | | 3. | cement - bind or join with or as if with cementfasten, fix, secure - cause to be firmly attached; "fasten the lock onto the door"; "she fixed her gaze on the man"cement - cover or coat with cement |
cementnoun1. mortar, plaster, paste The stone work has all been pointed with cement.2. sealant, glue, gum, adhesive, binder Stick the pieces on with tile cement.verb1. stick, join, bond, attach, seal, glue, plaster, gum, weld, solder Most artificial joints are cemented into place.Translationscement (səˈment) noun1. a mixture of clay and lime (usually with sand and water added) used for sticking things (eg bricks) together in building and to make concrete for making very hard surfaces. 水泥 水泥2. any of several types of glue. 接合劑 胶接剂3. a substance used to fill cavities in teeth. 用來填補牙齒凹洞的黏固粉 粘固粉 verb to join firmly with cement. 用水泥黏合 用水泥粘合cement mixer a machine with a revolving drum in which water and cement are mixed together. 水泥攪拌器 水泥搅拌器cement
be cast in cementTo be firmly or permanently established; to be unalterable or not subject to change. The healthcare law looks promising, but we'll have to wait until it's cast in cement before we know exactly what it will do.See also: cast, cementbe set in cementTo be firmly or permanently established; to be unalterable or not subject to change. The healthcare law looks promising, but we'll have to wait until it's set in cement before we know exactly what it will do.See also: cement, setset in cementFirmly or permanently established; not subject to change; unalterable. The healthcare law looks promising, but we'll have to wait until it's set in cement before we know exactly what it will do.See also: cement, setset (something) in cementTo establish something firmly or permanently; to make something unalterable or not subject to change. The healthcare law looks promising, but we'll have to wait until Congress sets it in cement before we know exactly what it will do.See also: cement, setcement (something) on (something)To use glue or another strong adhesive substance to fasten two things together. We need to cement this piece back on the vase before mom gets home and discovers it's broken!See also: cement, oncement (something) togetherTo use glue or another strong adhesive substance to fasten two or more things together. We need to cement the handle together before mom gets home and discovers that the vase is broken!See also: cement, togethercement something on(to) something and cement something onto fasten something onto something with glue or household cement. Cement this handle back onto the cup. Now, cement on the other handle. I will cement it on for you.See also: cement, oncement something togetherto fasten something together with glue or household cement. Use this stuff to cement the vase together. Will you cement these parts together?See also: cement, togetherin cementFirmly settled or determined; unalterable. For example, Their policy on taxes was set in cement despite opposition. For a synonym, see cast in stone. See also: cementcement city n. a cemetery. I’m too young to end up in cement city. See also: cement, city in cement Firmly settled or determined; unalterable: The administration's position on taxes was set in cement despite the unfavorable public response.See also: cementcement
cement, binding material used in construction and engineering, often called hydraulic cement, typically made by heating a mixture of limestone and clay until it almost fuses and then grinding it to a fine powder. When mixed with water, the silicates and aluminates in the cement undergo a chemical reaction; the resulting hardened mass is then impervious to water. It may also be mixed with water and aggregates (crushed stone, sand, and gravel) to form concreteconcrete,
structural masonry material made by mixing broken stone or gravel with sand, cement, and water and allowing the mixture to harden into a solid mass. The cement is the chemically active element, or matrix; the sand and stone are the inert elements, or aggregate.
..... Click the link for more information. . A cement made by grinding together lime and a volcanic product found at Pozzuoli on the Bay of Naples (hence called pozzuolana) was used in ancient Roman construction works, notably the Pantheon. During the Middle Ages the secret of cement was lost. In the 18th cent. John Smeaton, an English engineer, rediscovered the correct proportions when he made up a batch of cement using clayey limestone while rebuilding the Eddystone lighthouse off the coast of Cornwall, England. In the United States, production of cement at first relied on processing cement rock from various deposits, such as those found in Rosendale, N.Y. In 1824, Joseph Aspdin, an English bricklayer, patented a process for making what he called portland cement, with properties superior to its predecessors; this is the cement used in most modern construction. Modern portland cement is made by mixing substances containing lime, silica, alumina, and iron oxide and then heating the mixture until it almost fuses. During the heating process dicalcium and tricalcium silicate, tricalcium aluminate, and a solid solution containing iron are formed. Gypsum is later added to these products during a grinding process. Natural cement, although slower-setting and weaker than portland cement, is still employed to some extent and is occasionally blended with portland cement. Cement with a high aluminate content is used for fireproofing, because it is quick-setting and resistant to high temperatures; cement with a high sulfate content is used in complex castings, because it expands upon hardening, filling small spaces. CementA material, or a mixture of materials without aggregate, which when in a plastic state, possesses adhesive and cohesive properties and hardens in place.Cement the generic term for a group of artificial, inorganic, powdered, primarily hydraulic binding materials; upon interaction with water, aqueous solutions of salts, or other liquids, they form a plastic mass that hardens with time and becomes a solid, rocklike body. Cement is one of the most important building materials. It is used to make concrete and mortar, to secure individual structural elements, and for waterproofing and other purposes. Cement in the general sense of the term has been known since ancient times. The first artificial binding materials were gypsum and lime, which the ancient Egyptians and Greeks used in building monuments, parts of which have survived to the present day. Later binders included lime solutions with admixtures of crushed volcanic rock (ancient Rome) or slightly roasted brick pieces (Kievan Rus’); the admixtures gave the binders the ability to harden on hydration. In 1796, J. Parker received a patent for a hydraulic binder called Roman cement; it was a powdered product made by burning natural marls. J. Aspdin in England in 1824 and E. G. Cheliev in Russia in 1825 independently developed portland cement, obtained by burning an artificial mixture of limestone and clay in definite proportions until sintered. The works of A. R. Shuliachenko, N. A. Beleliubskii, I. G. Maliuga, N. N. Liamin, and V. I. Charnomskii were extremely important in developing the theory and practice of cement production in Russia. High-quality domestic cement created as the result of their work has almost completely supplanted foreign-produced cement in construction. In prerevolutionary Russia, however, the number of cement plants and their capacities and levels of technology were inadequate. The only scientific center that studied cement was the mechanics laboratory of the St. Petersburg Institute of Railroad Engineers. The October Revolution of 1917 opened up broad opportunities for the development of the cement industry and cement science. Such Soviet scientists as A. A. Baikov, V. A. Kind, V. N. lung, P. P. Budnikov, P. A. Rebinder, N. Ia. Toropov, Iu. M. Butt, and A. V. Volzhenskii provided the modern basis for the physical chemistry of cement, elaborated the theory of cement hardening, refined the technology of cement production, and devised new, highly efficient types of cement with special properties to meet the needs of different sectors of the national economy. In the USSR, scientific research and experimental design work related to the development of the cement industry and the raising of its level of technology is carried on by several specialized institutes, such as the All-Union Scientific Research Institute of the Cement Industry (NIITsement), the State All-Union Design and Research Institute for the Cement Industry (Giprotsement), and the All-Union Scientific Research Institute for Cement Machine-building Plants (NIITSemmash), as well as special departments at certain higher educational institutions. The modern process of cement production includes several steps: extracting natural raw materials or securing certain industrial waste products, such as blast-furnace slag, ash from steam power plants, and mining overburden, used as raw material; crushing and grinding the material; preparing a uniform mix of | Table 1. Primary types of cement produced in the USSR |
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| Type | Mineral composition of cement (% by weight) | Compound composition of clinker (% by weight) | Grade | Special features | Primary areas of use |
|---|
| Portland cement | Portland cement clinker (85);
gypsum (1.5–3.5) by SO3
content; active mineral
admixtures (up to 15) | 3CaO·SiO2 (37–72);
2CaO·SiO2 (6–47);
2CaO·Al2O3 (2–20);
4CaO·Al2O3·Fe2O3 (2–19) | 300, 400, 500, 600 | – | Cast-in-place concrete for public
and industrial buildings and
structures, prefabricated
reinforced-concrete structures,
road building, exterior sections
of hydraulic engineering structures,
mortars | Quick-hardening
Portland cement | Portland cement clinker (90);
gypsum (1.5–3.5) by SO3
content; active mineral
admixtures (up to 10) | 3CaO·SiO2 + 3CaO
·Al2O3 (up to 65);
2CaO·SiO2 + 4CaO
·Al2O3 Fe2O3 (33) | Not less than 400; after
three days, minimum
flexural strength 4
meganewtons per m2,
minimum compressive
strength 25 meganewtons
per m2 | Hardens more quickly
and is ground
finer than standard
Portland cement | Prefabricated reinforced-concrete
structures, projects with
shortened construction periods | | Sulfate-resistant Portland cement | Portland cement clinker (100);
gypsum (up to 3.5) by SO3
content | 3CaO·SiO2 (up to 50);
3CaO·Al2O3 (up to 5);
3CaO·Al2O3 +
4CaO·Al2O3Fe2O3
(up to 22) | 400 | Higher resistance to
sulfate action
and freezing | For structures subject to sulfate
action, cyclic freezing and
thawing, and cyclic wetting
and drying | | Plastic portland cement | Portland cement with plasticizing
admixture (0.15–0.25) | Same as portland cement | 300, 400, 500 | Improved workability
and higher resistance
to freezing | Same as portland cement; to
conseve cement or concrete mix;
to increase concrete’s resistance
to freezing | Hydrophobie
Portland cement | Portland cement with hydrophobic
admixture (0.06–0.3) | Same as portland
cement | 300, 400 | Withstands prolonged
storage; improved
workability and
increased resistance
to freezing | Same as common and plastic
Portland cement; used when
prolonged storage of the cement
is necessary | Oil-well or gaswell
cement: (a) for
wells with temperatures
up to 100°C;
(b) for wells with
temperatures
above 100°C | Portland cement clinker; permitted
additives: (a) active (up to 15) or
inert (up to 10) mineral admixtures;
(b) slag (up to 15) or sand
(up to 10) | Same as portland
cement | – | Rapid hardening
and slow setting | Plugging oil and gas wells | Decorative
Portland cement
(white and colored) | White portland cement clinker
(80–84); diatomite (6); inert
mineral admixture (10) or mineral
pigment (15) | 4CaO·Al2O3·Fe2O3
(up to 2) | 300, 400, 500 | White cement is
divided into three
categories depending
on degrees of
whiteness; colored
cements produced in
various colors | Finishing of building and structure
exteriors; sculptures and
ornamental work | Sulphate-resistant
portland-pozzolan
cement | Portland cement clinker (60);
volcanic (25–40) or sedimentary
(20–30) admixtures; gypsum
(up to 3.5) by SO3 content | 3CaO·Al2O3 (up to 8) | 200, 300, 400 | Higher resistance
to sulfate action | Underwater and subterranean
structures subject to constant
action of sulfate waters | Portland blastfurnace
slag
cement | Portland cement clinker (40–70);
pellets of blast-furnace slag
(30–60); gypsum (up to 3.5)
by SO3 content | Same as portland cement | 300, 400, 500 | Lower early strength;
less heat evolved
during hardening;
low resistance to
freezing; increased resistance
to sulphate action | Same as portland cement; suitable
for precast reinforced concrete
prepared with steam curing | | Aluminous cement | Aluminous slag (100); addition of
1% admixtures that do not lower
cement quality is permitted | CaO-Al2O3; 12CaO
·7Al2O3; CaO·2Al2O3;
2CaO·Al2O3·SiO2; FeO | 400, 500, 600
(after three days’ hardening) | Rapid hardening at
normal and low
temperatures; high
resistance to waters
with high mineral
content; loss of
strength (up to 60%)
after 15–20 years | Emergency, reconstruction, and
other work with shortened construction
periods; structures
subject to the action of sulfur
dioxide or waters with high
mineral content; heat-resistant
concrete and mortar; not suitable
for high-temperature or highmoisture
conditions | Aluminous-gypsum
expansive cement | Aluminous slag (70); dihydrate
calcium sulfate (30) | Same as aluminous
cement | 400, 500 (after three days’ hardening) | Expands on hydration
(0.15% in 1 day,
0.3–1 % in 28 days);
rapid hardening; high
density; highly waterproof
and sulfateresistant | Waterproof concrete and mortar,
caulking, repair work, plugging
oil and gas wells | Acid-resistant
cement | Quartz sand (90–96); sodium
fluosilicate (4–8.5) | SiO2; Na2SiF6 | Tensile strength 2
meganewtons per m2
(after 28 days’ hardening) | Resistant to most
mineral and organic
acids; not resistant
to action of HF, H2SiF6,
boiling water, or
steam; toxic | Acid-resistant concrete and
mortar, coatings, and linings; not
suitable for equipment used in the
food-processing industry or for
use at temperatures lower
than –20°C |
the required composition; burning the mix at a temperature of 1450°–1550°C until it sinters; and crushing the clinker obtained into a fine powder together with a small amount of gypsum and active mineral additives or other substances that give the cement the required properties. The three production methods used—wet process, dry process, and a combination process—differ in the manner in which the raw material mix is prepared. The method used is chosen primarily on the basis of technological and economic indicators: the possible degree of production concentration, fuel and electricity expenditures, and labor input. In the dry process, the raw materials (limestone and clay) are crushed and ground in mills; during the process, the raw materials are dried and converted to a powder. The composition of the powder is corrected to match specifications, and the powder is then sent to kilns. Modern rotary kilns for burning clinker are usually equipped with external heat exchangers, in which the raw material is heated and partially decarbonized. The heat expended in burning the clinker amounts to 750–850 C per kilogram of clinker. In the wet process, the raw material components are mixed with water and crushed in mills; the water acts as a softening agent, intensifies the grinding process, and reduces the specific energy expenditure for grinding. The pastelike mixture obtained, called a slurry, is corrected to meet specifications and sent to the kilns. The heat expended in burning is higher because of evaporation of the slurry water in the kiln and equals 5.45–6.7 mega-joules per kilogram of clinker (1,300–1,600 C/kg), depending on the size and design of the kiln. In the combination process, the raw material mix is prepared by the wet process, and the material is then dehydrated in vacuum filters or vacuum presses, shaped (usually into pellets), and sent to the kilns. The heat expenditure with this process is approximately 4.19 megajoules per kg of clinker (1,000 C/kg). The necessary cement properties are achieved by correctly planning the raw material mix and ensuring the specified composition during the production process with respect to chemical composition, the quality and quantity of minerals included in the clinker, and the quality and quantity of substances included in the finished cement. Correct planning of the raw material mix is crucial to ensuring the proper progression through the intermediate stages of clinker formation, completion of the burning process, and good economic indicators for production. The quality of the finished cement is monitored on the basis of the requirements of the appropriate All-Union State Standards. Physicomechanical testing methods used to determine cement properties have also been standardized. Cement is graded according to strength. The grade is determined from the flexural strength of prismatic test samples 40 × 40 × 160 mm in size and from the compressive strength of half sections of such samples. The samples are prepared from a cement solution mixed at a ratio of 1:3 by weight with ordinary quartz sand; the test samples are allowed to harden on hydration for 28 days from the time they are made. For special cements, the composition and methods of making and storing test samples may differ. Table 1 describes the composition, basic properties, and areas of use of the principal types of cement produced in the USSR. The types of cement produced abroad are approximately the same as those produced in the USSR. With respect to technical quality, Soviet cements are among the best in the world. Current trends in Soviet cement production include the following: a steady increase in the volume of cement production, which will reach 143–156 million tons in the USSR by 1980; a widening of the assortment and an increase in the production volume of special cements, especially high-strength, quick-hardening, decorative, and expansive cements; and an increase in the average grade strength of cements produced, in particular, an increase in the production of grade 600 cement and introduction of the production of grade 700 cement. Other trends include intensification of the hardening process (reaching high strength after 4–6 hours of hardening); efficient location of cement plants in order to reduce shipping operations for raw materials and finished products; a decrease in the prime cost of cement production; achievement of a high level of mechanization and automation of cement production; and a further improvement in working conditions at enterprises of the cement industry. REFERENCESTekhnologiia viazhushchikh veshchestv. Moscow, 1965.
Viazhushchie materialy, zapolniteli dlia betonov i nerudnye materialy. Moscow, 1973.
Kratkiispravochnik tekhnologa tsementnogo zavoda. Moscow, 1974.I. V. KRAVCHENKO cement[si′ment] (geology) Any chemically precipitated material, such as carbonates, gypsum, and barite, occurring in the interstices of clastic rocks. (histology) Calcified tissue which fastens the roots of teeth to the alveolus. Also known as cementum. (invertebrate zoology) Any of the various adhesive secretions, produced by certain invertebrates, that harden on exposure to air or water and are used to bind objects. (materials) A dry powder made from silica, alumina, lime, iron oxide, and magnesia which hardens when mixed with water; used as an ingredient in concrete. An adhesive for the assembling of surfaces which are not in close contact. Cement A material, usually finely divided, that when mixed with water forms a paste, and when molded sets into a solid mass. The term cement is sometimes used to refer to organic compounds used for adhering or for fastening materials, but these are more correctly known as adhesives. See Adhesive, Adhesive bonding In the fields of architecture, engineering, and construction, the term portland cement is applied to most of the hydraulic cements used for concrete, mortars, and grouts. Portland cement sets and hardens by reacting chemically with water. In concrete, it combines with water and aggregates (sand and gravel, crushed stone, or other granular material) to form a stonelike mass. In grouts and mortars, cement is mixed with water and fine aggregates (sand) or fine granular materials. See Concrete, Mortar Adjustments in the physical and chemical compositions allow for tailoring portland cements and other hydraulic cements to special applications. Blended hydraulic cements are produced with portland cements and materials that by themselves might not possess binding characteristics. Special cements are produced for mortars and architectural or engineering applications: white portland cement, masonry cement, and oil-well cement, expansive cement, and plastic cement. In addition to acting as the key ingredient in concrete, mortars, and grouts, portland cements are specified for soil-cement and roller-compacted concrete, used in pavements and in dams, and other water resource structures, and as reagents for stabilization and solidification of organic and inorganic wastes. cement1. A material or a mixture of materials (without aggregate) which, when in a plastic state, possesses adhesive and cohesive properties and hardens in place. Frequently, the term is used incorrectly for concrete, e.g., a “cement” block for concrete block. See also portland cement.2. A calcined combination of limestone and clay, combined with an aggregate that reacts chemically when water is added; after this reaction occurs, the mixture hardens in place as it dries, resulting in a stonelike material. Although the ancient Romans developed a cement that could harden under water (called hydraulic cement), there was little information in modern times on how to produce such a cement until the mid-1700s when experiments in England led to the development of a cement that could set quickly, in or out of water. Also see hydraulic cement, portland cement, Roman cement, water cement.cement1. Dentistry any of various materials used in filling teeth 2. mineral matter, such as silica and calcite, that binds together particles of rock, bones, etc., to form a solid mass of sedimentary rock cement
cement [se-ment´] 1. a substance that produces a solid union between two surfaces.2. dental cement.3. cementum.dental cement any of various bonding substances that are placed in the mouth as a viscous liquid and set to a hard mass; used in restorative and orthodontic dental procedures as luting (cementing) agents, as protective, insulating, or sedative bases, and as restorative materials.ce·ment (sē-ment'), [TA] 1. A layer of bonelike, mineralized tissue covering the dentin of the root and neck of a tooth that anchors the fibers of the periodontal ligament. Synonym(s): cementum [TA]2. In dentistry, a nonmetallic material used for luting, filling, or permanent or temporary restorative purposes, made by mixing components into a plastic mass that sets, or as an adherent sealer in attaching various dental restorations in or on the tooth. [L. caementum, rough quarry stone, fr. caedo, to cut] cement (sĭ-mĕnt′)n.1. Dentistry A substance used for filling cavities or anchoring crowns, inlays, or other restorations.2. Variant of cementum.v. ce·mented, ce·menting, ce·ments
ce·ment′er n.cement Dentistry Any of a number of bonding materials used in cavities and restorationsce·ment (sĕ-ment') [TA] 1. To affix two surfaces. 2. Material to make a structure adhere to another. 3. dentistry A nonmetallic material used for luting, filling, or permanent or temporary restoration, or as an adherent sealer in attaching various dental restorations in or on the tooth made by mixing components into a plastic mass that sets. [L. caementum, rough quarry stone, fr. caedo, to cut]cement the spongy bone-like substance surrounding the roots of mammalian teeth, which contains COLLAGEN-like fibres to absorb shock and which assists in holding the teeth in sockets. Part of the enamel of the crown of the teeth in some mammals, e.g. ungulates, is also covered by cement.ce·ment (sĕ-ment') [TA] 1. In dentistry, nonmetallic material used for luting, filling, or permanent or temporary restorative purposes, made by mixing components into a plastic mass that sets, or as an adherent sealer in attaching various dental restorations in or on the tooth.
Synonym(s): cementum [TA] . 2. A layer of bonelike, mineralized tissue covering dentin of root and neck of a tooth that anchors fibers of the periodontal ligament. [L. caementum, rough quarry stone, fr. caedo, to cut]See CMT
See CMTcement
Synonyms for cementnoun mortarSynonymsnoun sealantSynonyms- sealant
- glue
- gum
- adhesive
- binder
verb stickSynonyms- stick
- join
- bond
- attach
- seal
- glue
- plaster
- gum
- weld
- solder
Synonyms for cementnoun concrete pavement is sometimes referred to as cementRelated Wordsnoun a building material that is a powder made of a mixture of calcined limestone and clayRelated Words- building material
- hydraulic cement
- Portland cement
- concrete
- mortar
noun something that hardens to act as adhesive materialRelated Words- adhesive
- adhesive agent
- adhesive material
- glue
- mucilage
- gum
- putty
- iron putty
- red-lead putty
- mastic
noun any of various materials used by dentists to fill cavities in teethRelated Wordsnoun a specialized bony substance covering the root of a toothSynonymsRelated Words- solid body substance
- tooth root
- root
verb make fast as if with cementRelated Wordsverb cover or coat with cementRelated Wordsverb bind or join with or as if with cementRelated Words |