CN109665777A - A kind of elastic concrete improving Antiseismic building performance - Google Patents

A kind of elastic concrete improving Antiseismic building performance Download PDF

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Publication number
CN109665777A
CN109665777A CN201811651502.5A CN201811651502A CN109665777A CN 109665777 A CN109665777 A CN 109665777A CN 201811651502 A CN201811651502 A CN 201811651502A CN 109665777 A CN109665777 A CN 109665777A
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CN
China
Prior art keywords
component
cement
elastic concrete
building performance
sand
Prior art date
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Pending
Application number
CN201811651502.5A
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Chinese (zh)
Inventor
申力涛
刘勇
高辉
寇伟
刘哲
吴文慧
陈斐
杜素军
张影
舒兴旺
蔡丽娜
李登华
梁燏东
林浩
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Shanxi Province Transport Science Research Institute
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Shanxi Province Transport Science Research Institute
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Application filed by Shanxi Province Transport Science Research Institute filed Critical Shanxi Province Transport Science Research Institute
Priority to CN201811651502.5A priority Critical patent/CN109665777A/en
Publication of CN109665777A publication Critical patent/CN109665777A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/2038—Resistance against physical degradation
    • C04B2111/2053—Earthquake- or hurricane-resistant materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]

Abstract

The present invention relates to a kind of elastic concretes for improving Antiseismic building performance comprising two component of A, B, wherein component A is made of cement, admixture, sand, stone, fiber, and B component is made of water, additive, auxiliary agent.Elastic concrete of the present invention, maximum compressive strength is 120Mpa, and ultimate tensile strength 15Mpa, maximum deflection intensity is 25Mpa, maximum elongation rate is 9%, compared with the cement concrete used in the existing structure, when by eaerthquake damage, it is remarkably improved structure energy-absorbing deformability, reduce casualties, property loss, simultaneously in structure design, the ratio of reinforcement can be suitably reduced, project cost is effectively reduced.

Description

A kind of elastic concrete improving Antiseismic building performance
Technical field
The invention belongs to building material technical fields, it particularly relates to a kind of Antiseismic building performance of can be improved Elastic concrete.
Background technique
In recent years, with the rapid growth of China's economy, infrastructure is grown rapidly, after high-rise and super high-rise building such as rain Spring bamboo emerges in multitude.Current such building is mostly cement concrete constructions, although cement concrete material has pressure resistance The advantages that degree is high, and durability is good, is convenient for construction, but rigidity is big, bending resistance draws performance deficiency still objective reality, engineering staff generally to adopt Cooperated with reinforcing bar and concrete to promote concrete structure bending resistance and draw performance, make its be unlikely to occur when wrecking it is crisp Property fracture.
China has a vast territory, complicated geology, and individual areas are in earth's crust active region, and earthquake occurs often, not only causes tight Weight casualties causes fire, floods, toxic gas leakage, bacterium and radioactive substance diffusion, it is also possible to cause tsunami, cunning The secondary disasters such as slope, avalanche, ground fissure, therefore it is significant to improve Antiseismic building performance.
Antiseismic building research at present is concentrated mainly on structure design and reinforcement measure, data show if construction material Elasticity with higher itself, then it is aided with excellent structure design, in coming earthquake, fabric structure and material play simultaneously Cushioning effect can obviously reduce loss caused by earthquake.How Research Challenges at present promotes high compressive strength cement if essentially consisting in Concrete material elastic property, avoid bear it is curved, turn round, cut load when there is brittle break.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of elastic concretes for improving Antiseismic building performance.
The present invention relates to a kind of elastic concretes for improving Antiseismic building performance comprising component A and B component, wherein A Component: the mass ratio of B component is 100:20-25；The component A is made of cement, admixture, sand, stone, fiber；The B component It is made of water, additive, auxiliary agent.
In the component A, cement, admixture, sand, stone, fiber quality ratio are 100:100-120:100-150:150- 180:8-15；In the B component, water, additive, auxiliary agent mass ratio be 100:1-3:10-15.
In the component A, cement is the portland cement that strength grade is 52.5；Admixture is that mass ratio is 100:150- Ground granulated blast furnace slag, silicon powder and the blanc fixe of 200:80-100, wherein ground granulated blast furnace slag specific surface area 600-800m2/ Kg, silicon Grain size of micropowder range is 1-20 μm, blanc fixe specific surface area 300-500m2/Kg；Sand is quartz sand, partial size≤5mm, and Mohs is hard Degree >=7；Stone is basalt or granite, particle size range 5-20mm.Wherein sand, stone grain composition meet GB/T respectively 14684-2011 " construction sand " and GB/T 14685-2011 " construction cobble, rubble " are required.
In the component A, fiber is the chopped carbon fiber and steel fibre that mass ratio is 100:250-300；Wherein be chopped carbon Fibre length 6-10mm impregnates 150 minutes through 90 DEG C of concentrated nitric acids, and then clear water is rinsed, used after drying；Length of steel fiber 10- 15mm, diameter 0.15-0.2mm are used after copper coating processing.
In the B component, water is ordinary tap water.Additive is liquid polycarboxylate water-reducer, water-reducing rate 25%- 30%, auxiliary agent is sodium hydroxide.
It is of the present invention it is a kind of improve Antiseismic building performance elastic concrete in use, by two component of A, B be blended, Moulding by casting, standard conditions maintenance are carried out after mixing evenly.
The elastic concrete of the present invention that Antiseismic building performance can be improved, maximum compressive strength 120Mpa, most Big tensile strength is 15Mpa, and maximum deflection intensity is 25Mpa, and maximum elongation rate is 9%, mixed with cement used in existing structure Solidifying soil is compared, and when by eaerthquake damage, is remarkably improved structure energy-absorbing deformability, is reduced casualties, property loss, together When structure design when, can suitably reduce the ratio of reinforcement, project cost is effectively reduced.
Specific embodiment
Below with reference to specific embodiment to a kind of elastic concrete for improving Antiseismic building performance of the present invention It is described further, but the scope of protection of the present invention is not limited thereto.
Embodiment 1
A kind of elastic concrete improving Antiseismic building performance, the elastic concrete includes component A, B component, wherein Component A: the mass ratio of B component is 100:20；The component A is made of cement, admixture, sand, stone, fiber；The B component by Water, additive, auxiliary agent composition；In the component A, cement, admixture, sand, stone, fiber quality ratio are 100:100:100:150: 8；In the B component, water, additive, auxiliary agent mass ratio be 100:1:10；In the component A, cement is that strength grade is 52.5 portland cement.Admixture be ground granulated blast furnace slag, silicon powder and blanc fixe, mass ratio 100:150:80, wherein Ground granulated blast furnace slag specific surface area 600m2/Kg；Silicon powder particle size range is 1-20 μm, blanc fixe specific surface area 300m2/Kg.Sand For quartz sand, partial size≤5mm, Mohs' hardness >=7.Stone is granite, particle size range 5-20mm.Wherein sand, stone granular-grade partition Do not meet GB/T 14684-2011 " construction sand " and GB/T 14685-2011 " construction cobble, rubble " is required.Fiber is Chopped carbon fiber and steel fibre, mass ratio 100:250, wherein chopped carbon fiber length 6mm is heated using commercially available concentrated nitric acid It impregnates 150 minutes, is then rinsed using clear water, drying and processing to 90 DEG C.Length of steel fiber 10mm, diameter 0.15mm, surface plating Copper treatment.In the B component, water is ordinary tap water, and additive is liquid polycarboxylate water-reducer, water-reducing rate 25%, auxiliary agent For sodium hydroxide.
It is of the present invention it is a kind of improve Antiseismic building performance elastic concrete in use, by two component of A, B be blended, Moulding by casting, standard conditions maintenance are carried out after mixing evenly.
Embodiment 2
A kind of elastic concrete improving Antiseismic building performance, the elastic concrete includes component A, B component, wherein Component A: the mass ratio of B component is 100:21；The component A is made of cement, admixture, sand, stone, fiber；The B component by Water, additive, auxiliary agent composition；In the component A, cement, admixture, sand, stone, fiber quality ratio are 100:105:110:160: 10；In the B component, water, additive, auxiliary agent mass ratio be 100:2:11；In the component A, cement is that strength grade is 52.5 portland cement.Admixture be ground granulated blast furnace slag, silicon powder and blanc fixe, mass ratio 100:160:90, wherein Ground granulated blast furnace slag specific surface area 600m2/Kg；Silicon powder particle size range is 1-20 μm, blanc fixe specific surface area 300m2/Kg.Sand For quartz sand, partial size≤5mm, Mohs' hardness >=7.Stone is basalt, particle size range 5-20mm.Wherein sand, stone granular-grade partition Do not meet GB/T 14684-2011 " construction sand " and GB/T 14685-2011 " construction cobble, rubble " is required.Fiber is Chopped carbon fiber and steel fibre, mass ratio 100:270, wherein chopped carbon fiber length 6mm is heated using commercially available concentrated nitric acid It impregnates 150 minutes, is then rinsed using clear water, drying and processing to 90 DEG C.Length of steel fiber 10mm, diameter 0.15mm, surface plating Copper treatment.In the B component, water is ordinary tap water, and additive is liquid polycarboxylate water-reducer, water-reducing rate 25%, auxiliary agent For sodium hydroxide.
It is of the present invention it is a kind of improve Antiseismic building performance elastic concrete in use, by two component of A, B be blended, Moulding by casting, standard conditions maintenance are carried out after mixing evenly.
Embodiment 3
A kind of elastic concrete improving Antiseismic building performance, the elastic concrete includes component A, B component, wherein Component A: the mass ratio of B component is 100:25；The component A is made of cement, admixture, sand, stone, fiber；The B component by Water, additive, auxiliary agent composition；In the component A, cement, admixture, sand, stone, fiber quality ratio are 100:120:140:170: 12；In the B component, water, additive, auxiliary agent mass ratio be 100:3:15；In the component A, cement is that strength grade is 52.5 portland cement.Admixture be ground granulated blast furnace slag, silicon powder and blanc fixe, mass ratio 100:170:100, wherein Ground granulated blast furnace slag specific surface area 600m2/Kg；Silicon powder particle size range is 1-20 μm, blanc fixe specific surface area 300m2/Kg.Sand For quartz sand, partial size≤5mm, Mohs' hardness >=7.Stone is basalt or granite, particle size range 5-20mm.Wherein sand, stone Grade with meeting GB/T 14684-2011 " construction sand " and GB/T 14685-2011 " building cobble, rubble " is wanted respectively It asks.Fiber is chopped carbon fiber and steel fibre, mass ratio 100:300, wherein chopped carbon fiber length 6mm, using commercially available dense Nitric acid is heated to 90 DEG C and impregnated 150 minutes, then rinsed using clear water, drying and processing.Length of steel fiber 10mm, diameter 0.15mm, copper coating processing.In the B component, water is ordinary tap water, and additive is liquid polycarboxylate water-reducer, diminishing Rate is 25%, and auxiliary agent is sodium hydroxide.
It is of the present invention it is a kind of improve Antiseismic building performance elastic concrete in use, by two component of A, B be blended, Moulding by casting, standard conditions maintenance are carried out after mixing evenly.
According to JTG E30-2005 " highway engineering cement and cement concrete testing regulations ", made according to Examples 1 to 3 Test specimen simultaneously carries out performance detection, and test result is shown in Table 1.
Table 1: elastic concrete performance test results
Compared with the cement concrete used in the existing structure, when by eaerthquake damage, it is remarkably improved the change of structure energy-absorbing Shape ability reduces casualties, property loss, while in structure design, can suitably reduce the ratio of reinforcement, engineering is effectively reduced and makes Valence.

Claims (6)

1. it is a kind of improve Antiseismic building performance elastic concrete, which is characterized in that the elastic concrete include component A and B component, wherein component A: the mass ratio of B component is 100:20-25；The component A is by cement, admixture, sand, stone, fiber group At；The B component is made of water, additive, auxiliary agent.
2. a kind of elastic concrete for improving Antiseismic building performance according to claim 1, which is characterized in that the A In component, cement, admixture, sand, stone, fiber quality ratio are 100:100-120:100-150:150-180:8-15；The B group Point in, water, additive, auxiliary agent mass ratio be 100:1-3:10-15.
3. a kind of elastic concrete for improving Antiseismic building performance according to claim 1, which is characterized in that the A In component, cement is the portland cement that strength grade is 52.5；Admixture is that mass ratio is 100:150-200:80-100's Ground granulated blast furnace slag, silicon powder and blanc fixe, wherein ground granulated blast furnace slag specific surface area 600-800m2/ Kg, silicon powder particle size range It is 1-20 μm, blanc fixe specific surface area 300-500m2/Kg；Sand is quartz sand, partial size≤5mm, Mohs' hardness >=7；Shi Weixuan Wu Yan or granite, particle size range 5-20mm.
4. a kind of elastic concrete for improving Antiseismic building performance according to claim 1, which is characterized in that the A In component, fiber is the chopped carbon fiber and steel fibre that mass ratio is 100:250-300；Wherein chopped carbon fiber length 6- 10mm impregnates 150 minutes through 90 DEG C of concentrated nitric acids, and then clear water is rinsed, used after drying；Length of steel fiber 10-15mm, diameter 0.15-0.2mm is used after copper coating processing.
5. a kind of elastic concrete for improving Antiseismic building performance according to claim 1, which is characterized in that the B In component, additive is liquid polycarboxylate water-reducer, and water-reducing rate 25%-30%, auxiliary agent is sodium hydroxide.
6. a kind of elastic concrete for improving Antiseismic building performance according to claim 1, which is characterized in that use When, two component of A, B is blended, carries out moulding by casting, maintenance after mixing evenly.
CN201811651502.5A 2018-12-31 2018-12-31 A kind of elastic concrete improving Antiseismic building performance Pending CN109665777A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009011480A1 (en) * 2007-07-18 2009-01-22 Daewoo Engineering & Construction Co., Ltd Fire- resistant concrete containing nylon and polypropylene fibers
CN103601439A (en) * 2013-10-29 2014-02-26 江苏名和集团有限公司 C200 superhigh-strength high-performance composite concrete
CN104058677A (en) * 2013-03-20 2014-09-24 宏润建设集团股份有限公司 Steel fiber composite concrete member and preparation process thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009011480A1 (en) * 2007-07-18 2009-01-22 Daewoo Engineering & Construction Co., Ltd Fire- resistant concrete containing nylon and polypropylene fibers
CN104058677A (en) * 2013-03-20 2014-09-24 宏润建设集团股份有限公司 Steel fiber composite concrete member and preparation process thereof
CN103601439A (en) * 2013-10-29 2014-02-26 江苏名和集团有限公司 C200 superhigh-strength high-performance composite concrete

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
廖国胜等: "《土木工程材料 第2版》", 31 January 2018, 冶金工业出版社 *

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