CN102190466A - Heat insulating concrete - Google Patents

Heat insulating concrete Download PDF

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Publication number
CN102190466A
CN102190466A CN2011100740587A CN201110074058A CN102190466A CN 102190466 A CN102190466 A CN 102190466A CN 2011100740587 A CN2011100740587 A CN 2011100740587A CN 201110074058 A CN201110074058 A CN 201110074058A CN 102190466 A CN102190466 A CN 102190466A
Authority
CN
China
Prior art keywords
concrete
thermal insulation
rubber
cement
water
Prior art date
Application number
CN2011100740587A
Other languages
Chinese (zh)
Inventor
王宝民
吕兴军
Original Assignee
大连理工大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大连理工大学 filed Critical 大连理工大学
Priority to CN2011100740587A priority Critical patent/CN102190466A/en
Publication of CN102190466A publication Critical patent/CN102190466A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention belongs to the technical field of concrete in civil engineering, and relates to a novel technology for preparing heat insulating concrete. The invention is characterized in that: 1 m<3> of concrete contains 220 to 480kg of cement, 680 to 740kg of fine aggregate, 650 to 800kg of coarse aggregate, 220 to 415kg of rubber particles, 10 to 35kg of waste polystyrene foam particles, 160 to 190kg of water and 4.5 to 8.0kg of superplasticizer. A preparation process comprises a step of mechanically stirring for 180 to 240 seconds. The invention has the advantages that: the concrete has good heat insulation property and facilitates saving energy of a building; a great number of industrial waste materials are utilized, the environment is protected and the cost is reduced; and the concrete preparation process is simple. Therefore, the heat insulating concrete has obvious technological economy significance and social benefit.

Description

A kind of thermal insulation concrete
Technical field
The invention belongs to the concrete technology field of civil engineering work, relate to a kind of novel thermal insulation concrete material, specially refer to technology with waste tire rubber granule and the compound preparation thermal insulation concrete of granular polystyrene material.
Background technology
Junked tire is a kind of of solid trade waste, and along with rubber industry and developing of automobile industry, a large amount of junked tires, rubber item and scrap stock are on the increase.World environmental sanitation tissue statistics, world's junked tire burden has reached 3,000,000,000, and with every year about 1,000,000,000 numeral increase.China's junked tire annual production surpasses 100,000,000, and with double-digit speed increment in every year, China's junked tire will occupy first place in the world above 200,000,000 at present.It is to worsen physical environment, vegetation destruction growth, influence one of Harmful Waste of human health, crisis ball ecological environment.Therefore how these tires have not only caused huge threat to environment, and are a kind of serious wastings of resources, and these junked tires being handled and being utilized has become a serious social concern.
The method of usually conduct solid waste, as landfill, burning etc., all inapplicable to junked tire.As new solid pollution source, junked tire has very strong heat impedance, anti-mechanicalness and anti-degradation property.If buried processing, last a century can not decompose rotten; If outdoor storage, land occupation not only, and very easily grow mosquito, cause communicate illness, cause fire etc.Waste old is handled has become global problem, external some country is very strict to the management of junked tire, the old tire of obligated recovery when new tyre is sold by each tire production factory, the freight department of waste rubber is equipped with the decree that the department of tight supervision, the European Community has proposed to forbid landfill to junked tire, and requires: improve tire recycling ratio to 65%; Improve tire mean life 5%; Improve renovated tyre ratio to 25%; Old tire utilizes the rate of recovery to reach 100%.All there are the decree of forbidding the landfill junked tire specially in Holland, Sweden etc., and with the waste rubber comprehensive utilization of resources, a series of product has been produced in deep processing, as important environmental protection industry.And the bituminous pavement that regulation country subsidizes must add 5% rubber powder.
At present, the approach of junked tire recycling mainly contains: one of source that acts as a fuel; With coal relatively, waste old have very high calorific value (29~37MJ/kg), can be used as specific fuel such as cement kiln etc.Directly be used for civil engineering as starting material; Be directly used in the snubber that harbour is made vessel, be used to construct artificial reef or fending groin or as the protective grating of highway, soil-water protection hurdle, sound gobo or underdrainage system for building.Produce regenerated rubber; Regenerated rubber can directly be processed into multiple rubber item by the proper formulation sulfuration, and the doping level of general tire is below 5%.The direct production rubber powder; Rubber powder can be divided into tyre surface rubber powder and sundry goods rubber powder by its raw material sources, granularity by rubber powder can be divided into thick rubber powder and thin rubber powder, micro glue powder, ultra tiny rubber powder, can be divided into normal temperature by preparation technology and pulverize rubber powder and freezing and pulverizing rubber powder, can be divided into general rubber powder, activated rubber powder or modified glue powder again by the treatment process of rubber powder.
Rubber concrete is to be base material with the concrete, mixes the civil engineering work matrix material that rubber powder (comprising the micelle that particle diameter is bigger) is made.Rubber powder mainly improves concrete internal structure by physical action, does not change the chemical property of various materials in the concrete.Rubber is the lower material of a kind of Young's modulus, mix rubber powder after, concrete toughness is improved, and has reduced concrete Young's modulus.In rubber concrete, rubber mainly contains concrete influence: concrete is had water retention, mix rubber after, concrete bleeding improves, cohesiveness strengthens.In addition, rubber can reduce the various stress and the constraint micro-crack of system as all rising effect of elastic-like fiber of tiny material, produces and stops or slow down the tiny crack development and the concrete fracture that causes thereby reduce crackle; Form the structural distortion center that absorbs strain energy simultaneously, absorb vibrational energy in a large number, obviously improve concrete shock resistance and damping performance.On the whole, compare with portland cement concrete, rubber concrete has characteristics such as lightweight, good elasticity, toughness, endurance quality, damping performance, shock resistance, anti-spalling, air-and water-permeable, thermal and insulating performance and noise reduction sound insulation property, potentially becomes a kind of new green construction material that can adapt to the construction market needs preferably.
Wrapping material use the polystyrene foam particles plate in a large number, store up after discarding to be difficult to degraded in the short period of time, environment is polluted, and also be the wasting of resources.
Therefore the little compound preparation thermal insulation concrete of waste and old heat-insulating granules (waste old, waste and old granular polystyrene) of research and utilization thermal conductivity will have economic and social benefit significantly.
Summary of the invention
The invention provides a kind of new concrete material, purpose improves concrete thermal insulation and heat-insulating property exactly, and preparation and construction technology are simple and direct.
Technical scheme of the present invention is as follows:
The component and the content of thermal insulation concrete of the present invention are as follows: 1m 3Contain cement 220-480kg in the concrete, fine aggregate 680-740kg, coarse aggregate 650-800kg, rubber grain 220-415kg, polystyrene foam particles 10-35kg, water 160-190kg, high efficiency water reducing agent 4.5-8.0kg.Mechanical stirring during preparation, churning time 180 seconds-240 seconds.
High efficiency water reducing agent: water-reducing rate is greater than 15%.
Fine aggregate: river sand, II district medium sand, silt content is less than 3%.
Coarse aggregate: rubble, particle diameter are 5-25mm.
Cement: select 32.5 grades or 42.5 grades of silicate cements or ordinary Portland cement for use.Concrete strength grade is selected for use according to strength grade of concrete.
Rubber grain: through the disposable pulverizing of mechanical normal temperature and mix and join, particle diameter is 5-25mm.
Polystyrene foam particles: particle diameter 1-3mm.
Effect of the present invention is that concrete heat-insulating is functional, helps building energy conservation; Utilize a large amount of industrial wastes, the protection environment reduces cost; Concrete preparation technology is simple.So Technological Economy meaning and obvious social benefit.
Embodiment
Be described in detail the specific embodiment of the present invention below in conjunction with technical scheme.With preparation C15, C20, C25 thermal insulation concrete is the example explanation.
Embodiment 1
Certain office building C15 thermal insulation concrete.
Used starting material and performance are as follows:
Cement: PI 42.5 silicate cements, certain cement mill produces, 28 days ultimate compression strength 49.6MPa.
Sand: river sand, fineness modulus 2.85, II district medium sand, apparent density is 2.65g/cm 3, tap density is 1400kg/m 3
Stone: particle diameter is 5-25mm, and apparent density is 2.68g/cm 3, tap density is 1450kg/m 3, the faller gill degree is 5%.
Water: tap water.
Water reducer: naphthalene water reducer, water-reducing rate 18%.
Rubber grain: 5-25mm using rubber powder of waste tire.
Waste polystyrene foam particle: self-control.
Concrete mix and performance are as follows:
Embodiment 2
Certain residential project C20 thermal insulation concrete.
Used starting material and performance are with embodiment 1.
Concrete mix and performance are as follows:
Embodiment 3
Certain freezer engineering C25 thermal insulation concrete.
Used starting material and performance are with embodiment 1.
Concrete mix and performance are as follows:

Claims (3)

1. a thermal insulation concrete is characterized in that, the component and the content of thermal insulation concrete are as follows: 1m 3Contain cement 220-480kg, fine aggregate 680-740kg, coarse aggregate 650-800kg, rubber grain 220-415kg, waste polystyrene foam particle 10-35kg, water 160-190kg, high efficiency water reducing agent 4.5-8.0kg in the concrete.
Cement: select 32.5 grades or 42.5 grades of silicate cements or ordinary Portland cement for use; Concrete strength grade is selected for use according to strength grade of concrete;
Fine aggregate: river sand, II district medium sand, silt content is less than 3%;
Coarse aggregate: rubble, particle diameter are 5-25mm;
High efficiency water reducing agent: water-reducing rate is greater than 15%;
2. a kind of thermal insulation concrete as claimed in claim 1 is characterized in that described rubber grain through the disposable pulverizing of mechanical normal temperature with mix and join, and particle diameter is 5-25mm.
3. a kind of thermal insulation concrete as claimed in claim 1 is characterized in that described polystyrene foam particles, particle diameter 1-3mm.
CN2011100740587A 2011-03-26 2011-03-26 Heat insulating concrete CN102190466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100740587A CN102190466A (en) 2011-03-26 2011-03-26 Heat insulating concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100740587A CN102190466A (en) 2011-03-26 2011-03-26 Heat insulating concrete

Publications (1)

Publication Number Publication Date
CN102190466A true CN102190466A (en) 2011-09-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011100740587A CN102190466A (en) 2011-03-26 2011-03-26 Heat insulating concrete

Country Status (1)

Country Link
CN (1) CN102190466A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103896528A (en) * 2012-12-24 2014-07-02 深圳市嘉达高科产业发展有限公司 Sound insulation, thermal insulation and waterproof mortar for flooring and preparation method thereof
CN107311689A (en) * 2017-06-26 2017-11-03 江苏中路交通科学技术有限公司 A kind of high-performance foam concrete material and its preparation technology
CN107721273A (en) * 2017-11-02 2018-02-23 叠彩区千牛起重设备经营部 A kind of thermal insulation concrete material
CN109678425A (en) * 2019-01-15 2019-04-26 中电建路桥集团有限公司 Pervious concrete and its preparation method and application

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101041577A (en) * 2006-03-23 2007-09-26 同济大学 Polystyrene foam particle heat-insulating mortar
CN101182157A (en) * 2007-11-09 2008-05-21 北京工业大学 Interface finishing agent improving rubber-cement stone substrate in rubber concrete

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101041577A (en) * 2006-03-23 2007-09-26 同济大学 Polystyrene foam particle heat-insulating mortar
CN101182157A (en) * 2007-11-09 2008-05-21 北京工业大学 Interface finishing agent improving rubber-cement stone substrate in rubber concrete

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103896528A (en) * 2012-12-24 2014-07-02 深圳市嘉达高科产业发展有限公司 Sound insulation, thermal insulation and waterproof mortar for flooring and preparation method thereof
CN107311689A (en) * 2017-06-26 2017-11-03 江苏中路交通科学技术有限公司 A kind of high-performance foam concrete material and its preparation technology
CN107721273A (en) * 2017-11-02 2018-02-23 叠彩区千牛起重设备经营部 A kind of thermal insulation concrete material
CN109678425A (en) * 2019-01-15 2019-04-26 中电建路桥集团有限公司 Pervious concrete and its preparation method and application

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Application publication date: 20110921