CN104030643A - Composite thermal insulation mortar and manufacturing method thereof - Google Patents

Composite thermal insulation mortar and manufacturing method thereof Download PDF

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Publication number
CN104030643A
CN104030643A CN201410322258.3A CN201410322258A CN104030643A CN 104030643 A CN104030643 A CN 104030643A CN 201410322258 A CN201410322258 A CN 201410322258A CN 104030643 A CN104030643 A CN 104030643A
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China
Prior art keywords
parts
thermal insulation
insulation mortar
composite thermal
cement
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Pending
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CN201410322258.3A
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Chinese (zh)
Inventor
薛伶俐
黎红兵
梁爽
刘延年
徐杰
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Sichuan Institute of Building Research
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Sichuan Institute of Building Research
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Priority to CN201410322258.3A priority Critical patent/CN104030643A/en
Publication of CN104030643A publication Critical patent/CN104030643A/en
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    • 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 discloses composite thermal insulation mortar which solves the problem that the thermal insulation property of existing thermal insulation mortar is not good and achieves recycling of crop straws. The composite thermal insulation mortar is composed of, by weight, 70-80 parts of cement, 10-15 parts of coal ash, 5-20 parts of calcium hydroxide, 10-20 parts of rice straw fibers, 30-40 parts of glass beads, 0.5-0.8 part of cellulose ether, 0.1-0.2 part of starch ether, 0.01-0.05 part of air entraining agents, 1-4 parts of emulsion powder and 150-190 parts of water, wherein the cement, the coal ash and the calcium hydroxide account for 100 parts. According to the composite thermal insulation mortar, the crop straws are fully utilized and recycled; meanwhile, the rice straw fibers of agricultural waste and the coal ash of industrial waste can be utilized, and the composite thermal insulation mortar is environmentally friendly, low in energy consumption and capable of being widely applied to thermal insulation of internal walls and external walls of buildings.

Description

A kind of composite thermal insulation mortar and preparation method thereof
Technical field
The invention belongs to building material technical field, be specifically related to a kind of composite thermal insulation mortar and preparation method thereof.
Background technology
In the social-economic structures of China's present stage, 27.6% of energy for building Yi Da whole society energy-output ratio, and along with the raising of people's living standard, the continuous increase of heating and energy consumption for cooling, the proportion of building energy consumption in total energy consumption will constantly increase, and building energy conservation is significant to energy-conservation contribution.The emphasis of China's building energy conservation is: the reducing energy consumption of energy-conservation, the existing large public building of energy-conservation, the light fixture of energy-conservation, the interior heating system of architectural exterior-protecting construction and the raising of other electrical equipment efficiency, newly-built large public building, wherein architectural exterior-protecting construction has accounted for 30% to the contribution of energy conservation object.In building enclosure, exterior wall obtains and hotly accounts for 30%~35%, the heat-insulating property that improves exterior wall can effectively reduce house energy consumption, the external-wall heat-insulation material that China uses often at present has polystyrene foam plate (EPS), extruded polystyrene cystose (XPS), spraying polyurethane material (PU), thermal insulation mortar etc., and along with the paces of China's walling innovation constantly advance, country more and more pays close attention to the development of novel wall lagging material.
In " " 12 " walling innovation instruction ", point out: the development of new materials for wall principle that combines with region characteristic of should adhering to suiting measures to local conditions, at the profit that large solid waste produces and top grade, high volume are first developed in the large area of the volume of cargo in storage novel wall material product that gives up.Vegetable fibre belongs to branch of China one of solid waste the most widely, statistics according to investigations, and within 2010, national stalk theoretical resources amount is 8.4 hundred million tons, can collect stock number and be about 700,000,000 tons, stalk kind is taking paddy rice, wheat, corn etc. as main.Agricultural crop straw output is large, distribution is wide, kind is many, is the precious resources of life of farmers and agricultural development for a long time always.Since reform and opening-up, under the Party Central Committee, the strong agriculture Huinong of State Council policy support, agricultural is scored consecutive bumper harvests, agricultural crop straw generation increasing year by year, and it is serious that phenomenon is arbitrarily abandoned, burned to stalk, brings series of environmental problems.Accelerate to advance stalk comprehensive utilization, for stablizing Agro-ecology balance, alleviate resource constraint, alleviate environmental stress all tool be of great significance.State Council's " about suggestion of accelerating to advance agricultural crop straw comprehensive utilization ", proposes to reach more than 80% target to stalk comprehensive utilization ratio in 2015, and task is very arduous.
Summary of the invention
The object of the present invention is to provide a kind of composite thermal insulation mortar and preparation method thereof, solve the not good problem of existing thermal insulation mortar heat-insulating property, and realize the recycling of agricultural crop straw.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of composite thermal insulation mortar, is made up of the raw material of following weight part: 70~80 parts of cement, 10~15 parts, flyash, 5~20 parts, calcium hydroxide, 10~20 parts of rice straw fibers, 30~40 parts of glass beads, 0.5~0.8 part of ether of cellulose, 0.1~0.2 part of starch ethers, 0.01~0.05 part of air entrapment agent, 1~4 part of latex powder, 150~190 parts, water; Wherein, cement, flyash and calcium hydroxide three sum are 100 parts.
Select as one, the composite thermal insulation mortar that the present invention is is made up of the raw material of following weight part: 72 parts of cement, 13 parts, flyash, 15 parts, calcium hydroxide, 10 parts of rice straw fibers, 40 parts of glass beads, 0.6 part of ether of cellulose, 0.14 part of starch ethers, 0.04 part of air entrapment agent, 2 parts of latex powder, 150 parts, water.
Select as another kind, the composite thermal insulation mortar that the present invention is is made up of the raw material of following weight part: 78 parts of cement, 10 parts, flyash, 12 parts, calcium hydroxide, 15 parts of rice straw fibers, 35 parts of glass beads, 0.5 part of ether of cellulose, 0.14 part of starch ethers, 0.04 part of air entrapment agent, 3 parts of latex powder, 172 parts, water.
Further, described cement is P II 52.5R silicic acid salt slurry.
Again further, described rice straw staple length is 5 ㎜, and is the rice straw fiber through calcium hydroxide alkaline purification.
Further, its viscosity of described ether of cellulose is 40000~75000Pas.
In addition, described latex powder is ethylene-vinyl acetate copolymer latex powder.Meanwhile, glass bead is unorganic glass matter mineral material, is irregular spherical particle, and inside is porous air cavity configuration, surperficial vitreous sealing, level and smooth, glossy.
A preparation method for composite thermal insulation mortar, comprises the following steps:
(1) by cement, flyash, calcium hydroxide, ether of cellulose, starch ethers, air entrapment agent and latex powder dry mixing to uniform state, obtain dry mash;
(2) rice straw fiber and glass bead are mixed to uniform state, obtain mixture;
(3) water is added in stirrer, then dry mash is added in stirrer and stirs 50~100s, finally mixture is added in stirrer, then carry out mechanical stirring 1.5~3min, obtain product.
The present invention compared with prior art, has the following advantages and beneficial effect:
The agricultural crop straw that the present invention adopts has light porous characteristic, it is natural lagging material, rice straw fiber is mixed to thermal insulation mortar, preparation novel thermal insulation mortar, applies to construction wall insulation, not only can improve the energy-saving effect of building, and can bring into play fiber reinforced effect, improve the splitting resistance of thermal insulation mortar, and can promote the utilization of rice straw fiber, avoid a large amount of wastes of rice straw fiber.
Thermal insulation mortar of the present invention is meeting under the condition of workability and mechanical property requirements; also there is good heat-insulating property; with rice straw fiber Substitute For Partial glass bead; can reduce the glass bead that uses high energy consumption; improve mortar heat-insulating property; and can bring into play the fiber reinforced effect of rice straw, improve the early stage splitting resistance of thermal insulation mortar, promote the utilization of agricultural waste rice straw fiber.
Embodiment
Below in conjunction with embodiment, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment 1
A kind of composite thermal insulation mortar, is made up of the raw material of following weight part: 72 parts of cement, 13 parts, flyash, 15 parts, calcium hydroxide, 10 parts of rice straw fibers, 40 parts of glass beads, 0.6 part of ether of cellulose, 0.14 part of starch ethers, 0.04 part of air entrapment agent, 2 parts of latex powder, 150 parts, water.Preparation method is as follows:
(1) by the cement of above-mentioned weight part, flyash, calcium hydroxide, ether of cellulose, starch ethers, air entrapment agent and latex powder dry mixing to uniform state, obtain dry mash;
(2) rice straw fiber and the glass bead of above-mentioned weight part are mixed to uniform state, obtain mixture;
(3) water of above-mentioned weight part is added in stirrer, then dry mash is added in stirrer and stirs 50~100s, finally mixture is added in stirrer, then carry out mechanical stirring 1.5~3min, obtain product.
The dry bulk density of the thermal insulation mortar of the present embodiment is 341kg/m 3, ultimate compression strength is 0.56MPa, thermal conductivity is 0.081W/(mK), cohesive strength is 0.04MPa, melded system is that 0.62,48h water-intake rate is that 49%, 28d linear shrinkage ratio is 0.07%.
Embodiment 2
A kind of composite thermal insulation mortar, is made up of the raw material of following weight part: 78 parts of cement, 10 parts, flyash, 12 parts, calcium hydroxide, 15 parts of rice straw fibers, 35 parts of glass beads, 0.5 part of ether of cellulose, 0.14 part of starch ethers, 0.04 part of air entrapment agent, 3 parts of latex powder, 172 parts, water.Preparation method is as follows:
(1) by the cement of above-mentioned weight part, flyash, calcium hydroxide, ether of cellulose, starch ethers, air entrapment agent and latex powder dry mixing to uniform state, obtain dry mash;
(2) rice straw fiber and the glass bead of above-mentioned weight part are mixed to uniform state, obtain mixture;
(3) water of above-mentioned weight part is added in stirrer, then dry mash is added in stirrer and stirs 60s, finally mixture is added in stirrer, then carry out mechanical stirring 2min, obtain product.
The dry bulk density of the thermal insulation mortar of the present embodiment is 354kg/m 3, ultimate compression strength is 0.52MPa, thermal conductivity is 0.080W/(mK), cohesive strength is 0.03MPa, melded system is that 0.60,48h water-intake rate is that 51%, 28d linear shrinkage ratio is 0.08%.
Embodiment 3
A kind of composite thermal insulation mortar, is made up of the raw material of following weight part: 71 parts of cement, 13 parts, flyash, 16 parts, calcium hydroxide, 20 parts of rice straw fibers, 30 parts of glass beads, 0.7 part of ether of cellulose, 0.10 part of starch ethers, 0.05 part of air entrapment agent, 3 parts of latex powder, 182 parts, water.Preparation method is with embodiment 2.
The dry bulk density of the thermal insulation mortar of the present embodiment is 359kg/m 3, ultimate compression strength is 0.43MPa, thermal conductivity is 0.078W/(mK), cohesive strength is 0.03MPa, melded system is that 0.55,48h water-intake rate is that 53%, 28d linear shrinkage ratio is 0.10%.
Embodiment 4
A kind of composite thermal insulation mortar, is made up of the raw material of following weight part: 72 parts of cement, 13 parts, flyash, 15 parts, calcium hydroxide, 15 parts of rice straw fibers, 35 parts of glass beads, 0.6 part of ether of cellulose, 0.14 part of starch ethers, 0.04 part of air entrapment agent, 2 parts of latex powder, 166 parts, water.Preparation method is with embodiment 2.
The dry bulk density of the thermal insulation mortar of the present embodiment is 350kg/m 3, ultimate compression strength is 0.49MPa, thermal conductivity is 0.081W/(mK), cohesive strength is 0.04MPa, melded system is that 0.64,48h water-intake rate is that 48%, 28d linear shrinkage ratio is 0.07%.
According to above-described embodiment, just can realize well the present invention.What deserves to be explained is; under prerequisite based on said structure design, for solving same technical problem, even if some that make in the present invention are without substantial change or polishing; the essence of the technical scheme adopting is still the same with the present invention, therefore it also should be in protection scope of the present invention.

Claims (8)

1. a composite thermal insulation mortar, it is characterized in that, formed by the raw material of following weight part: 70~80 parts of cement, 10~15 parts, flyash, 5~20 parts, calcium hydroxide, 10~20 parts of rice straw fibers, 30~40 parts of glass beads, 0.5~0.8 part of ether of cellulose, 0.1~0.2 part of starch ethers, 0.01~0.05 part of air entrapment agent, 1~4 part of latex powder, 150~190 parts, water; Wherein, cement, flyash and calcium hydroxide three sum are 100 parts.
2. a kind of composite thermal insulation mortar according to claim 1; it is characterized in that, formed by the raw material of following weight part: 72 parts of cement, 13 parts, flyash, 15 parts, calcium hydroxide, 10 parts of rice straw fibers, 40 parts of glass beads, 0.6 part of ether of cellulose, 0.14 part of starch ethers, 0.04 part of air entrapment agent, 2 parts of latex powder, 150 parts, water.
3. a kind of composite thermal insulation mortar according to claim 1; it is characterized in that, formed by the raw material of following weight part: 78 parts of cement, 10 parts, flyash, 12 parts, calcium hydroxide, 15 parts of rice straw fibers, 35 parts of glass beads, 0.5 part of ether of cellulose, 0.14 part of starch ethers, 0.04 part of air entrapment agent, 3 parts of latex powder, 172 parts, water.
4. according to a kind of composite thermal insulation mortar described in claim 1~3 any one, it is characterized in that, described cement is P II 52.5R silicic acid salt slurry.
5. according to a kind of composite thermal insulation mortar described in claim 1~3 any one, it is characterized in that, described rice straw staple length is 5 ㎜.
6. according to a kind of composite thermal insulation mortar described in claim 1~3 any one, it is characterized in that, its viscosity of described ether of cellulose is 40000~75000Pas.
7. according to a kind of composite thermal insulation mortar described in claim 1~3 any one, it is characterized in that, described latex powder is ethylene-vinyl acetate copolymer latex powder.
8. the preparation method of a kind of composite thermal insulation mortar described in claim 1~7 any one, is characterized in that, comprises the following steps:
(1) by cement, flyash, calcium hydroxide, ether of cellulose, starch ethers, air entrapment agent and latex powder dry mixing to uniform state, obtain dry mash;
(2) rice straw fiber and glass bead are mixed to uniform state, obtain mixture;
(3) water is added in stirrer, then dry mash is added in stirrer and stirs 50~100s, finally mixture is added in stirrer, then carry out mechanical stirring 1.5~3min, obtain product.
CN201410322258.3A 2014-07-08 2014-07-08 Composite thermal insulation mortar and manufacturing method thereof Pending CN104030643A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496319A (en) * 2014-12-20 2015-04-08 魏超产 Anti-compressive and anti-crack thermal mortar and preparation method thereof
CN104649641A (en) * 2015-02-09 2015-05-27 同济大学 Chopped straw fiber-toughened inorganic thermal insulation mortar and using method thereof
CN105130311A (en) * 2015-07-03 2015-12-09 枞阳县天筑新型建筑材料有限公司 Sisal-fiber-added enhanced lightweight thermal-insulation mortar and preparation method thereof
CN105130326A (en) * 2015-07-03 2015-12-09 枞阳县天筑新型建筑材料有限公司 Mixed thermal-insulation mortar with good performances and high construction efficiency and preparation method thereof
CN105152594A (en) * 2015-07-03 2015-12-16 枞阳县天筑新型建筑材料有限公司 Energy-saving and environmental protection inorganic thermal insulation mortar special for buildings and preparation method thereof
CN105152583A (en) * 2015-07-03 2015-12-16 枞阳县天筑新型建筑材料有限公司 Mothproof and synergistic thermal insulation mortar and preparation method thereof
CN109485342A (en) * 2018-12-07 2019-03-19 山东农业大学 Kenaf stalk lightweight anti-cracking heat insulation mortar and preparation method thereof
CN112321230A (en) * 2020-11-02 2021-02-05 清远市德居新型建筑材料有限公司 Novel double-component polymer light mortar formula
CN113402226A (en) * 2021-06-28 2021-09-17 南昌大学 Special thermal insulation mortar for straw fly ash building block and preparation method thereof

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496319A (en) * 2014-12-20 2015-04-08 魏超产 Anti-compressive and anti-crack thermal mortar and preparation method thereof
CN104649641A (en) * 2015-02-09 2015-05-27 同济大学 Chopped straw fiber-toughened inorganic thermal insulation mortar and using method thereof
CN105130311A (en) * 2015-07-03 2015-12-09 枞阳县天筑新型建筑材料有限公司 Sisal-fiber-added enhanced lightweight thermal-insulation mortar and preparation method thereof
CN105130326A (en) * 2015-07-03 2015-12-09 枞阳县天筑新型建筑材料有限公司 Mixed thermal-insulation mortar with good performances and high construction efficiency and preparation method thereof
CN105152594A (en) * 2015-07-03 2015-12-16 枞阳县天筑新型建筑材料有限公司 Energy-saving and environmental protection inorganic thermal insulation mortar special for buildings and preparation method thereof
CN105152583A (en) * 2015-07-03 2015-12-16 枞阳县天筑新型建筑材料有限公司 Mothproof and synergistic thermal insulation mortar and preparation method thereof
CN109485342A (en) * 2018-12-07 2019-03-19 山东农业大学 Kenaf stalk lightweight anti-cracking heat insulation mortar and preparation method thereof
CN109485342B (en) * 2018-12-07 2021-04-13 山东农业大学 Kenaf straw light anti-cracking thermal insulation mortar and preparation method thereof
CN112321230A (en) * 2020-11-02 2021-02-05 清远市德居新型建筑材料有限公司 Novel double-component polymer light mortar formula
CN113402226A (en) * 2021-06-28 2021-09-17 南昌大学 Special thermal insulation mortar for straw fly ash building block and preparation method thereof

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Application publication date: 20140910