Lightweight anti-cracking heat insulation mortarTechnical field
The invention belongs to building material field, and in particular to a kind of lightweight anti-cracking heat insulation mortar.
Background technology
With modern people life idea and mode it is diversified detail, for the environmental requirement in building also dayBenefit increase.HVAC is while the living environment of comfortable and high-quality is brought, also as big in building energy consumptionFamily.The heat insulation effect of construction wall is poor, can further increase the use of HVAC, can so cause the waste of energy consumption.Therefore,People are more using carrying when construction of buildings by the innovation of building technology and the research and development of energy new materialThe heat preservation and insulation of high building wall.
In construction of buildings, cement mortar is one of essential material, and the good and bad of cement mortar material also willThe durability of fabric structure and the heat-insulating property of wall after building can be largely effected on.Therefore, the selection of this material of mortarIt is particularly important.With the development of technology, occurs increasing thermal insulation mortar in the market.Thermal insulation mortar is usuallyUsing various light materials as aggregate, using cement as gelating material, some property-modifying additives are admixed, is stirred and makes through manufacturing enterpriseInto a kind of premixing dry powder and mortar.It is mainly used in constructing a kind of construction material of building insulating layer, there is energy-conserving profit waste, protectHeat-insulated, the ageing-resistant excellent properties of temperature and it is cheap, easy for construction the features such as, have the extensive market demand.With meshThe thermal insulation mortar species of preceding in the market is various, and spread in performance is uneven, and still there is quality weight, heat insulating ability for most of thermal insulation mortarsThe defects of energy effect difference one-level crack resistance deficiency, it is easy to wall crazing phenomenon occur especially for the mortar of crack resistance difference,Be not easy to construct in the winter time when in use, condense hardening compared with slow and limited with the cementitiousness of base material, in practical engineering application byTo certain limitation.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of light weight, excellent thermal insulation performance and cracking resistanceThe good lightweight anti-cracking heat insulation mortar of effect.
To reach above-mentioned purpose, the present invention is implemented by the following technical programs：
A kind of lightweight anti-cracking heat insulation mortar, is prepared from the following raw materials in parts by weight：35~60 parts of cement, flyash 15~37 parts, 20~35 parts of glass microballoon, 13~20 parts of aluminium making residue, 11~25 parts of polypropylene fibre, 5~15 parts of chabasie powder, glue8~20 parts of powder, 1~8 part of Lauxite, 20~35 parts of bentonite, 3~12 parts of borax, 1~8 part of polyvinyl alcohol, water-loss reducer 1~5Part, 1~8 part of air entraining agent.
Further, above-mentioned lightweight anti-cracking heat insulation mortar, can be prepared from the following raw materials in parts by weight：
40~50 parts of cement, 20~30 parts of flyash, 25~30 parts of glass microballoon, 13~18 parts of aluminium making residue, polypropylene15~20 parts of fiber, 8~12 parts of chabasie powder, 10~15 parts of rubber powder, 1~5 part of Lauxite, 25~30 parts of bentonite, borax 5~10 parts, 2~5 parts of polyvinyl alcohol, 1~3 part of water-loss reducer, 1~5 part of air entraining agent.
It is further preferred that above-mentioned lightweight anti-cracking heat insulation mortar, can specifically be prepared from the following raw materials in parts by weight：
43 parts of cement, 24 parts of flyash, 27 parts of glass microballoon, 15 parts of aluminium making residue, 17 parts of polypropylene fibre, chabasie powder10 parts, 11 parts of rubber powder, 4 parts of Lauxite, 28 parts of bentonite, 6 parts of borax, 3 parts of polyvinyl alcohol, 3 parts of water-loss reducer, 4 parts of air entraining agent.
In such scheme, the air entraining agent is lauryl sodium sulfate, sodium metasilicate, calcium carbonate, magnesium carbonate or sodium acid carbonateIn it is one or more than one kinds of.
In such scheme, the water-loss reducer can be in TYLOSE 30000, hydroxyethyl ether cellulose or starch etherAny one or two kinds.
The preparation method of this lightweight anti-cracking heat insulation mortar and the auxiliary materials of addition can be routinely concrete production technologyCarry out.
Glass microballoon, polypropylene fibre, chabasie powder are added in material of the present invention, can reduce or prevent coagulationIn soil premature cure stage after pouring, plastic shrinkage and micro-crack are caused because of bleeding and moisture loss, can also reduce, preventThe concrete hardening later stage produces micro-crack caused by desciccation crack and temperature change, so as to improve the antiseepage of mortar, freeze proof, anti-impactThe performances such as mill；The cementability and cracking resistance of mortar can be improved by adding rubber powder, Lauxite, aluminium making residue, bentonite, borax simultaneouslyProperty, promote mortar to incorporate concrete, so as to improve the deformability of concrete structure and toughness.
It is an advantage of the invention that：Raw materials for production are cheap, and component proportion is simple, and the mortar being prepared has not only lightThe advantages of matter, insulation, high intensity, and energy-conserving and environment-protective.
Embodiment
To further illustrate the present invention, the present invention is elaborated with reference to specific examples below.
Embodiment 1
Lightweight anti-cracking heat insulation mortar, is prepared from the following raw materials in parts by weight：
35 parts of cement, 20 parts of flyash, 35 parts of glass microballoon, 13 parts of aluminium making residue, 25 parts of polypropylene fibre, chabasie powder10 parts, 12 parts of rubber powder, 7 parts of Lauxite, 25 parts of bentonite, 3 parts of borax, 1 part of polyvinyl alcohol, 3 parts of water-loss reducer, 7 parts of air entraining agent；Wherein
The air entraining agent be lauryl sodium sulfate, sodium metasilicate, calcium carbonate, magnesium carbonate or sodium acid carbonate in one kind, instituteWater-loss reducer is stated as any one in TYLOSE 30000, hydroxyethyl ether cellulose or starch ether.
This lightweight anti-cracking heat insulation mortar can be prepared using following methods：
1) raw material as needed for the weight preparation；
2) cement, glass microballoon, flyash, aluminium making residue, chabasie powder, bentonite and chabasie powder are first delivered to sandStarch in mixer, the water for adding its gross weight 40-65% is stirred mixing, speed of agitator 80-90r/min, mixing timeFor 70-95min, stirring terminates to obtain slurry A；
3) polypropylene fibre, rubber powder, Lauxite, borax and step 1) are made in slurry A again, stirred in mortar30-45min is stirred in machine, speed of agitator 80-100r/min, obtains slurry B；
4) finally polyvinyl alcohol, water-loss reducer and air entraining agent are added in slurry B made from step 2), in mortar mixerMiddle stirring 2.5-4.0h, speed of agitator 75-90r/min, you can.
Embodiment 2
Lightweight anti-cracking heat insulation mortar, is prepared from the following raw materials in parts by weight：
50 parts of cement, 30 parts of flyash, 25 parts of glass microballoon, 18 parts of aluminium making residue, 15 parts of polypropylene fibre, chabasie powder8 parts, 15 parts of rubber powder, 2 parts of Lauxite, 30 parts of bentonite, 10 parts of borax, 5 parts of polyvinyl alcohol, 1 part of water-loss reducer, 3 parts of air entraining agent；Wherein
The air entraining agent is any two in lauryl sodium sulfate, sodium metasilicate, calcium carbonate, magnesium carbonate or sodium acid carbonateKind, and by 1:1 mass ratio is obtained by mixing；The water-loss reducer is TYLOSE 30000, hydroxyethyl ether cellulose or starch etherIn any two kinds, and by 1:1 mass ratio is obtained by mixing.
The preparation method of the lightweight anti-cracking heat insulation mortar is identical with embodiment 1.
Embodiment 3
Lightweight anti-cracking heat insulation mortar, is prepared from the following raw materials in parts by weight：
43 parts of cement, 24 parts of flyash, 27 parts of glass microballoon, 15 parts of aluminium making residue, 17 parts of polypropylene fibre, chabasie powder10 parts, 11 parts of rubber powder, 4 parts of Lauxite, 28 parts of bentonite, 6 parts of borax, 3 parts of polyvinyl alcohol, 3 parts of water-loss reducer, 4 parts of air entraining agent.Wherein
The air entraining agent be lauryl sodium sulfate, sodium metasilicate, calcium carbonate, magnesium carbonate or sodium acid carbonate in one kind, instituteWater-loss reducer is stated as any one in TYLOSE 30000, hydroxyethyl ether cellulose or starch ether.
The preparation method of this lightweight anti-cracking heat insulation mortar is identical with embodiment 1.
Embodiment 4
Lightweight anti-cracking heat insulation mortar, is prepared from the following raw materials in parts by weight：
45 parts of cement, 26 parts of flyash, 26 parts of glass microballoon, 15 parts of aluminium making residue, 17 parts of polypropylene fibre, chabasie powder11 parts, 13 parts of rubber powder, 4 parts of Lauxite, 28 parts of bentonite, 7 parts of borax, 3 parts of polyvinyl alcohol, 2 parts of water-loss reducer, 3 parts of air entraining agent；Wherein
The air entraining agent is any one in lauryl sodium sulfate, sodium metasilicate, calcium carbonate, magnesium carbonate or sodium acid carbonateKind；The water-loss reducer is any two kinds in TYLOSE 30000, hydroxyethyl ether cellulose or starch ether, and by 1:1 matterAmount ratio mixes.
The preparation method of this lightweight anti-cracking heat insulation mortar is identical with embodiment 1.
Experimental example
Using lightweight anti-cracking heat insulation mortar of the present invention plaster 20~30mm thickness, test its thermal conductivity factor W/ (m.K),The index of the thermal conductivity factor of national energy-saving thermal insulation concrete is 7d≤0.070；28d≤0.085.
After tested, using the thermal conductivity factor W/ of the lightweight anti-cracking heat insulation mortar 7d obtained by the embodiment of the present invention 1~4(m.K) the thermal conductivity factor W/ (m.K) for being 0.065,28d is 0.082, in the indication range of national heat preservation energy-saving, is had veryGood heat-insulating property, it is adapted to the building heat preservation aspect of house wall surface.
The thickness that cold district plasters this lightweight anti-cracking heat insulation mortar in China correspondingly increases to >=50mm, you can reachesEnergy-conservation 60% to national energy-saving JGJ134-2001, JGJ75-2003 prescribed by standard requires solve severe cold area winter long low temperatureBuilding energy conservation requirement.