CN104829189B - Phase-change energy-storing composite foam concrete block - Google Patents
Phase-change energy-storing composite foam concrete block Download PDFInfo
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- CN104829189B CN104829189B CN201510001889.XA CN201510001889A CN104829189B CN 104829189 B CN104829189 B CN 104829189B CN 201510001889 A CN201510001889 A CN 201510001889A CN 104829189 B CN104829189 B CN 104829189B
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
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Abstract
The invention discloses a phase-change energy-storing composite foam concrete block which includes a foam concrete block body. A cement-base phase-change material is composited onto an inner side wall of the foam concrete block body and is composed of following components: 48-80% of cement, 0-30% of fly ash, 1.5-3% of re-dispersible latex powder, 0.1-0.3% of cellulase, 0.3-1% of fiber, 10-25% of a shaped phase-change energy-storing material, 0-1% of a water reducing agent and 0-1.5% of a water repellent agent. The cement-base phase-change material is directly poured onto one side wall of the foam concrete and the phase-change energy-storing composite foam concrete block is obtained after hardening maintenance. The concrete block has both a thermal-insulation performance and a temperature-self-adjustment performance, can store heat at a high temperature and release the heat at a low temperature to maintain a relative constant indoor temperature, thereby further enhancing a building energy-saving effect. The concrete block, when being used for wall body, is high in surface strength, is convenient to construct, is leakage-resistant, is good in durability and can satisfy a requirement of energy saving in buildings.
Description
Technical field
The present invention relates to building material technical field is and in particular to a kind of phase-change accumulation energy composite foam concrete building block.
Background technology
With the development of economic construction, human society increasingly increases to the demand of the energy and dependency, energy resource supply shortage
Have become as the key factor of restriction economic development, and the exhaustion crisis of the energy and problem of environmental pollution are increasingly subject to people
Concern, improve energy use efficiency and exploitation regenerative resource just become the important topic of human society.Meanwhile, with people
Growth in the living standard, heating, ventilation and idle call can sharply increase, and electric power resource consumes seriously, causes electrical network peak-valley difference
Continue to increase, the safety to electrical network and economy bring very big impact.
Bring the pressure of electrical network in order to alleviate life power consumption, people realize energy using the latent heat of phase change of phase-change material
Storage and utilization, to improve energy utilization rate.Phase-change material has heat storage performance when phase transformation occurs, and can absorb or discharge big
Amount latent heat, and oneself temperature of itself will not change.Phase-change material is reasonably applied in building block, is conducive to reduction to build
Build the temperature wave amplitude of exterior wall inner surface, so that indoor temperature is more steady, improve comfort level；Meanwhile, reduce air conditioning system to set
Standby energy consumption." the self-temperature-adjusting phase change building block " of Publication No. CN101892722, Publication No. CN102535730 " composite filled
" a kind of phase-transition heat-preserving composite block " of phase-change material and the building block of insulation material " Publication No. CN103088957 passes through rationally
Select building block block type structure, phase-changing energy storage material and insulation material, optimize inter-layer position structure and produce and there is insulation and store up
The new self-temperature-adjusting phase change energy storage energy-saving building block of hot property.Organic phase change material is impregnated into air-entrained concrete building block by Liu Ping et al.
In, make a kind of novel wall material and test the performances such as the intelligent thermoregulating of this material, intensity.Result shows, this Novel wall
Building block has good insulation temperature adjusting performance.With the continuous lifting of building energy conservation requirement, the application of phase transformation building block is also more next
More extensive.
Existing phase transformation building block is primarily present problems with：1）Preparation technology is more complicated, need to prepare building-block, then
Filling insulation material, phase-change material respectively.2）Due to the restriction of building block bore size, phase-change material consumption is limited.3）Thermal insulating material
The low thermal conductivity of material can delay the homoiothermic of phase-change material.4）Phase-change material and the compatibility of building block, limit phase-change material
Selection range.
Content of the invention
The purpose of the present invention is that the weak point for existing phase transformation building block provides a kind of phase-change accumulation energy composite foam coagulation
Earth building blocks, this building block has that preparation process is simple, phase-change material quantity of heat storage be big, intelligent thermoregulating, no heat bridge the features such as.
Realization the technical scheme is that：A kind of phase-change accumulation energy composite foam concrete building block it is characterised in that：By steeping
Foam concrete block body and the cement based phase-change material pouring in foam concrete block body medial wall form.Wherein cement
The consisting of of based phase-change material：Cement 48～80%, flyash 0～30%, redispersable latex powder 1.5～3%, cellulose ether 0.1
～0.3%, fiber 0.3～1%, setting phase change energy storage material 10～25%, water reducer 0～1%, hydrophober 0～1.5%.
In present disclosure：A kind of described phase-change accumulation energy composite foam concrete building block it is characterised in that：Described bubble
Foam concrete building block is, with physical method, foam aqueous solution is prepared into foam, then foam is added to is gelled material by cement based
Expect, gather materials, in the finish mix slurry such as admixture, additive and water, blended stirring, pour molding, nature or steam curing and
The lightweight cellular concrete building block becoming, its apparent density 300～1300/m3, heat conductivity 0.03～0.35 W/ (m k).
In present disclosure：A kind of described phase-change accumulation energy composite foam concrete building block it is characterised in that：Described water
Mud based phase-change material pours when foam concrete block body medial wall builds building block by laying bricks or stones, and cement based phase-change material is towards interior.
Described setting phase change energy storage material is that fusing point and is suitable for one or more phases of building materials in the range of 18～28 DEG C
Become material.The water consumption of described cement based phase-change material is not fixed, control hierarchy degree≤20mm, and denseness is 60～100mm.
In present disclosure：A kind of described phase-change accumulation energy composite foam concrete building block it is characterised in that：Described water
Mud is P O42.5 level Portland cement, and flyash is I grade or II grade of ash.
In present disclosure：A kind of described phase-change accumulation energy composite foam concrete building block it is characterised in that：Described can
Redispersion latex powder is vinylacetate and ethylene copolymer latex powder, Gu containing >=98%, 0.5～8 μm of fineness.
In present disclosure：A kind of described phase-change accumulation energy composite foam concrete building block it is characterised in that：Described fibre
The plain ether of dimension is ethoxyl methyl cellulose ether（HEMC）, hydroxypropyl methyl cellulose ether（HPMC）, viscosity is 10～200,000.
In present disclosure：A kind of described phase-change accumulation energy composite foam concrete building block it is characterised in that：Described fibre
Tie up as polypropene staple, length ＜ 10mm, draw ratio 10～50.
In present disclosure：A kind of described phase-change accumulation energy composite foam concrete building block it is characterised in that：Described subtract
Water preparation is polycarboxylic acid high-performance water reducer, admittedly containing 35%～50%, water-reducing rate 18%～35%；Described hydrophober is commercially available organosilicon
Hydrophober, one of calcium stearate hydrophober and modified calcium stearate hydrophober.
Compared with prior art, the present invention has following features and beneficial effect：
（1）Cement based phase-change material and foam cement compound use, can effectively reduce indoor heat and scatter and disappear, by control
Controlling the water circulation mud based phase-change material pours thickness, can adjust the consumption of setting phase change energy storage material.
（2）It is mixed with substantial amounts of polymer glue powder and cellulose ether in cement based phase-change material, increased cement-based material
Flexibility and adhesion strength, there is no problem and can effectively resist building block and become for its bonding with foam concrete block main body
Shape, the risk of cracking.
（3）For improving the thermal and insulating performance of building block, the comprcssive strength of foam concrete block is not high, fragile, surface
Pour one layer of cement based phase-change material, the surface strength of foam concrete not only can be improved, reduce breakage rate, strengthen waterproof effect
Fruit moreover it is possible to intelligent thermoregulating effectively, make the temperature of interior more steadily, improve comfort level, reduce air conditioning system equipment simultaneously
Energy consumption.
（4）Cement based phase-change material heat conductivity is big and is located at interior, can quickly sense the temperature change of interior and carry out
Intelligent thermoregulating.
（5）1～2 kind of phase-change material can be added, to adapt to differently in cement based phase-change material according to climatic characteristic
Area, the needs of Various Seasonal.
Specific embodiment
Specific embodiment is with reference to embodiment, but is not limited to embodiment.
Embodiment 1
The consisting of of cement based phase-change material：71 parts of cement, 10 parts of flyash, 2 parts of redispersable latex powder, cellulose ether
0.2 part, 0.8 part of fiber, 15 parts of setting phase change energy storage material, 0.2 part of water reducer, 0.8 part of hydrophober, 20 parts of water.
Above-mentioned raw material is uniformly mixed, pours in 500Kg/m3Foam concrete block on, its thickness and bubble
Foam concrete ratio is：1:8, obtain finished product building block after maintenance 1d under the conditions of 60 DEG C.
The unit weight of composite heat insulation block is：530Kg/m3, comprcssive strength is 3.5MPa
Embodiment 2
The consisting of of cement based phase-change material：46.8 parts of cement, 30 parts of flyash, 2 parts of redispersable latex powder, cellulose
0.2 part of ether, 0.8 part of fiber, 20 parts of setting phase change energy storage material, 0.2 part of water reducer, 20 parts of water.
Above-mentioned raw material is uniformly mixed, pours in 1000Kg/m3On the foam concrete block of unit weight, its thickness
With foam concrete ratio it is：1:8, obtain finished product building block after maintenance 1d under the conditions of 60 DEG C.
The unit weight of composite heat insulation block is：1067Kg/m3, comprcssive strength is 11.2MPa
Embodiment 3
The consisting of of cement based phase-change material：58.8 parts of cement, 20 parts of flyash, 2 parts of redispersable latex powder, cellulose
0.2 part of ether, 0.8 part of fiber, 18 parts of setting phase change energy storage material, 0.2 part of water reducer, 0.8 part of hydrophober, 30 parts of water.
Above-mentioned raw material is uniformly mixed, pours in 600Kg/m3Foam concrete block on, its thickness and bubble
Foam concrete ratio is：1:8, obtain finished product building block after maintenance 1d under the conditions of 60 DEG C.
The unit weight of composite heat insulation block is：711Kg/m3, comprcssive strength is 5.2MPa
Embodiment 4
The consisting of of cement based phase-change material：44.6 parts of cement, 10 parts of flyash, 2 parts of redispersable latex powder, cellulose
0.2 part of ether, 0.8 part of fiber, 14 parts of setting phase change energy storage material, 0.2 part of water reducer, 1 part of hydrophober, 27 parts of water.
Above-mentioned raw material is uniformly mixed, pours in 400Kg/m3On the foam concrete block of unit weight, its thickness
With foam concrete ratio it is：1:9, obtain finished product building block after maintenance 1d under the conditions of 60 DEG C.
The unit weight of composite heat insulation block is：520Kg/m3, comprcssive strength is 2.8MPa
Embodiment 5
The consisting of of cement based phase-change material：49.8 parts of cement, 25 parts of flyash, 2 parts of redispersable latex powder, cellulose
0.2 part of ether, 0.8 part of fiber, 22 parts of setting phase change energy storage material, 0.2 part of water reducer, 25 parts of water.
Above-mentioned raw material is uniformly mixed, pours in 800Kg/m3On the foam concrete block of unit weight, its thickness
With foam concrete ratio it is：1:8, obtain finished product building block after maintenance 1d under the conditions of 60 DEG C.
The unit weight of composite heat insulation block is：889Kg/m3, comprcssive strength is 8.2MPa
In above-described embodiment：Described redispersable latex powder is vinylacetate and ethylene copolymer latex powder, Gu containing >=
98%, 0.5～8 μm of fineness.Described cellulose ether is ethoxyl methyl cellulose ether（HEMC）, hydroxypropyl methyl cellulose ether
（HPMC）, viscosity is 10～200,000.Described fiber is polypropene staple, length ＜ 10mm, draw ratio 10～50.Described diminishing
Agent is polycarboxylic acid high-performance water reducer, admittedly containing 35%～50%, water-reducing rate 18%～35%；Described hydrophober is hated for commercially available organosilicon
Water preparation, one of calcium stearate hydrophober and modified calcium stearate hydrophober.Described setting phase change energy storage material is fusing point
In the range of 18～28 DEG C and be suitable for one or more phase-change materials of building materials.Described foam concrete block is normal
The regular-type foam concrete segment that gauge material is obtained with physical blowing.
Claims (6)
1. a kind of phase-change accumulation energy composite foam concrete building block it is characterised in that：By foam concrete block body and pour in
The cement based phase-change material composition of foam concrete block body medial wall, the wherein mass percent group of cement based phase-change material
Become：Cement 48%～80%, flyash 0～30%, redispersable latex powder 1.5%～3%, cellulose ether 0.1%～
0.3%th, fiber 0.3%～1%, setting phase change energy storage material 10%～25%, water reducer 0～1%, hydrophober 0～1.5%.
2. a kind of covert energy storage composite foam concrete building block according to claim 1 it is characterised in that：Described cement is
42.5 grades of Portland cements of P O, flyash is I grade or II grade of ash.
3. a kind of covert energy storage composite foam concrete building block according to claim 1 it is characterised in that：Described can divide again
Scattered latex powder is vinylacetate and ethylene copolymer latex powder, solid content >=98%, 0.5～8 μm of fineness.
4. a kind of covert energy storage composite foam concrete building block according to claim 1 it is characterised in that：Described cellulose
Ether is ethoxyl methyl cellulose ether HEMC, hydroxypropyl methyl cellulose ether HPMC.
5. a kind of covert energy storage composite foam concrete building block according to claim 1 it is characterised in that：Described fiber is
Polypropene staple, length ＜ 10mm, draw ratio 10～50.
6. a kind of covert energy storage composite foam concrete building block according to claim 1 it is characterised in that：Described water reducer
For polycarboxylic acid high-performance water reducer, solid content 35%～50%, water-reducing rate 18%～35%；Described hydrophober is commercially available organic
Silicon hydrophober, one of calcium stearate hydrophober.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001889.XA CN104829189B (en) | 2015-01-05 | 2015-01-05 | Phase-change energy-storing composite foam concrete block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510001889.XA CN104829189B (en) | 2015-01-05 | 2015-01-05 | Phase-change energy-storing composite foam concrete block |
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| CN104829189A CN104829189A (en) | 2015-08-12 |
| CN104829189B true CN104829189B (en) | 2017-02-22 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254247A (en) * | 2015-10-19 | 2016-01-20 | 嘉善远大新型墙体有限公司 | Red concrete block and preparation method thereof |
| CN105254245A (en) * | 2015-10-19 | 2016-01-20 | 嘉善远大新型墙体有限公司 | Purple concrete block and preparation method thereof |
| CN105254248A (en) * | 2015-10-19 | 2016-01-20 | 嘉善远大新型墙体有限公司 | Yellow concrete block and preparation method thereof |
| CN105254246A (en) * | 2015-10-19 | 2016-01-20 | 嘉善远大新型墙体有限公司 | Blue concrete block and preparation method thereof |
| CN105272033A (en) * | 2015-10-19 | 2016-01-27 | 嘉善远大新型墙体有限公司 | Brown concrete block and preparation method thereof |
| CN107265965B (en) * | 2016-04-08 | 2020-02-18 | 南京唯才新能源科技有限公司 | Aerogel foam concrete building block and preparation method thereof |
| CN108911676A (en) * | 2018-08-30 | 2018-11-30 | 浙江远通建筑材料有限公司 | A kind of preparation method of air-entrained concrete building block |
| CN114809358A (en) * | 2022-04-25 | 2022-07-29 | 上海师范大学 | Phase change energy storage concrete wall for heat preservation and insulation |
| CN115043629A (en) * | 2022-06-30 | 2022-09-13 | 长安大学 | Phase-change heat storage foam concrete, preparation method thereof and preparation method of heat storage wall |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101519291B (en) * | 2008-02-27 | 2011-12-28 | 中国京冶工程技术有限公司 | Cement based self-leveling mortar with temperature regulation function |
| CN102477775A (en) * | 2010-11-29 | 2012-05-30 | 王健 | Composite heat insulation structure of wall |
| US8070876B1 (en) * | 2011-05-05 | 2011-12-06 | Haihong Jiang | Fireproof insulating cementitious foam comprising phase change materials |
| CN103771808B (en) * | 2012-10-23 | 2015-10-21 | 中国石油化工股份有限公司 | A kind of phase-transition heat-storage sand-cement slurry containing rubber powder and preparation method thereof |
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