CN109942244A - A kind of foam concrete - Google Patents

A kind of foam concrete Download PDF

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Publication number
CN109942244A
CN109942244A CN201711388971.8A CN201711388971A CN109942244A CN 109942244 A CN109942244 A CN 109942244A CN 201711388971 A CN201711388971 A CN 201711388971A CN 109942244 A CN109942244 A CN 109942244A
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CN
China
Prior art keywords
parts
water
foam concrete
concrete
haydite
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CN201711388971.8A
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Chinese (zh)
Inventor
谭伟培
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Xingye Silver Base Concrete Co Ltd
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Xingye Silver Base Concrete Co Ltd
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Priority to CN201711388971.8A priority Critical patent/CN109942244A/en
Publication of CN109942244A publication Critical patent/CN109942244A/en
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Abstract

The invention discloses a kind of foam concrete, are made of the raw material of following mass fraction: 200~300 parts of cement, 250~370 parts of haydite, 380~460 parts of sand, 3~6 parts of traction-resistant fibre, 150~350 parts of water, 3.5~5.4 parts of foaming agent, 4~7 parts of water-reducing agent.Foam concrete provided by the invention can be realized that quality is lighter, intensity is bigger, hole quality is high, to improve it in the physical property of the various aspects such as compression strength, impermeability, sound insulation, heat-insulated.

Description

A kind of foam concrete
Technical field
The present invention relates to technical field of concrete, in particular to a kind of foam concrete.
Background technique
The preparation of foam concrete is different from mixing normal concrete, and there are the processes that a foam imports for it.In order to more Well in this process by foam be homogeneously introduced in cement slurry and it is intact be distributed evenly in foam concrete system, Ask cement slurry that there is good mobility.To accelerate concrete strength, the ratio of mud is to guarantee that cement mortar has good flow The necessary condition of property.
The production method of foam concrete has damp sand slurry processes and two kinds of dry sand slurry processes.Damp sand slurry processes are usually to stir in concrete It mixes station and cement, sand etc. is stirred into mortar, and be transported to building site with truck mixer vehicle, then sand is added in separately made foam Slurry, blender mix foam and mortar thoroughly, then by the foam concrete prepared injection pump truck conveying or scene directly construction. Dry sand slurry processes are that each dry basis (cement, flyash etc.) is delivered to construction site by transport or transmission system, dry basis with Water mix at the construction field (site), is then added mortar for separately made foam, and the two mix in homogenizer is subsequently used for scene Construction.
Since this foam concrete consistency is smaller, viscosity cannot overcome the surface spreading power of foam, in slurry not With the foam of position, there is different degrees of increase at any time in diameter, to keep its part foam diameter bigger than normal, and steeps Foam diameter is different, adds that bubble is unstable, declines at bubble rate ability, finally influence into the compression strength of foam concrete, impermeability, The physical property of the various aspects such as sound insulation, heat-insulated is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of foamed concrete, it can be realized that quality is lighter, intensity is bigger, hole quality Height, to improve it in the physical property of the various aspects such as compression strength, impermeability, sound insulation, heat-insulated.
To achieve the above object, the present invention provides a kind of foam concrete, are made of the raw material of following mass fraction: 200~300 parts of cement, 250~370 parts of haydite, 380~460 parts of sand, 3~6 parts of traction-resistant fibre, 150~350 parts of water, foaming 3.5~5.4 parts of agent, 4~7 parts of water-reducing agent.
Preferably, in above-mentioned technical proposal, be made of the raw material of following mass fraction: 253 parts of cement, 332 parts of haydite, 405 parts of sand, 4.2 parts of traction-resistant fibre, 200 parts of water, 4.2 parts of foaming agent, 5 parts of water-reducing agent.
Preferably, in above-mentioned technical proposal, be made of the raw material of following mass fraction: 276 parts of cement, 364 parts of haydite, 452 parts of sand, 4.6 parts of traction-resistant fibre, 236 parts of water, 4.5 parts of foaming agent, 4.7 parts of water-reducing agent.
Preferably, in above-mentioned technical proposal, the haydite its by coconut palm charcoal shell: regeneration concrete: flyash: lime clay It is 10:61:25:4 composition by mass parts ratio, regeneration concrete, flyash and lime clay is uniformly mixed, At a temperature of 520 DEG C preheat 20~25min, after in 1180~1200 DEG C of 10~15min of roasting temperature, drop to 350 DEG C to temperature When be added coconut palm charcoal shell, keep the temperature 10~15min, granulation prepare partial size be 5~8mm haydite;Wherein, the regeneration concrete is by giving up The concrete block of abandoning is broken into granulated slag and forms.
Preferably, in above-mentioned technical proposal, the traction-resistant fibre by 35~45 parts of polypropylene fibre and light steel fibre 55~ 65 parts of compositions.
Preferably, in above-mentioned technical proposal, the foaming agent is made of the raw material of following parts by weight: detergent alkylate sulphur The double oleic acid of 4.5 parts of sour sodium, 2.3 parts of superfine aluminium power, 2 parts of magnesium hydroxide powder, 1 part of sodium hydroxide, polyethylene glycol methyl glucoside 0.5 part of ester, 0.2 part of triethanolamine, 0.6 part of polyacrylamide, 1 part of carboxymethyl cellulose, 58 parts of water.
Preferably, in above-mentioned technical proposal, the water-reducing agent is made of the raw material of following weight fraction: p-aminobenzene sulfonic acid 4~20 parts of salt formaldehyde condensation products, 10~15 parts of calcium lignosulfonate, 10~14 parts of ethylene oxide-propylene oxide copolymer, polyethylene glycol oxide 4 ~7 parts, 3~5 parts of sodium nitrite, 1~2 part of sodium hydroxide, 2~5 parts of aluminium triphosphate, 2~3 parts of cocounut oil acyl diethanol amine, base Phenol and 1~2 part of ethylene oxide condensate, 2~3 parts of phenol.
Compared with prior art, the invention has the following beneficial effects:
1, foam concrete provided by the invention, light weight, intensity are big, good heat insulating, can reduce thickness of wall body, have Save the effect of material
2, few using cement in foam concrete of the present invention, to reduce coal resources necessary to production cement, no Nervous using energy source is only alleviated, also makes concrete strength high, moisture is few, mitigates the weight of concrete, and foam concrete is complete It is whole closely knit.
3, the foaming agent used in the present invention, be animal protein oil, vegetable oil and oxidant interaction under, no matter It is that any negative interaction will not all be generated to the producer or user and environment, and is that expansion rate is fast, foam can be made uniform, Liquid film is tough and tensile, and stability is good, and bleeding rate is low, and the duration is long, and has no effect to cementitious material.
4, the haydite that the present invention uses is formed mixed by the roasting of coconut palm charcoal shell, regeneration concrete, flyash and lime clay Object is closed, pollution of a variety of industrial wastes to environment is on the one hand solved, turns waste into wealth, it is low in cost;On the other hand coconut palm charcoal is added The haydite that shell roasts forms active charcoal hole and further mitigates weight, and has higher toughness and intensity, mixed being made Merge more closely knit with cement mortar when solidifying soil, crushing resistance is strong, impervious and sound insulation value is more preferable.
Specific embodiment
Below with reference to embodiment, specific embodiments of the present invention will be described in detail, it is to be understood that of the invention Protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members Part or other component parts.
Raw material preparation:
(1) cement, 200~300 parts
P.O.42.5R or more ordinary portland cement, portland slag cement, Portland fly ash cement etc. can make With.
(2) haydite, 250~370 parts
Haydite its by coconut palm charcoal shell: regeneration concrete: flyash: lime clay by mass parts ratio be 10:61:25:4 group At, regeneration concrete, flyash and lime clay are uniformly mixed, 20~25min is preheated at a temperature of 520 DEG C, after In 1180~1200 DEG C of 10~15min of roasting temperature, coconut palm charcoal shell is added when temperature drops to 350 DEG C, keeps the temperature 10~15min, Granulation prepares the haydite that partial size is 5~8mm;
Wherein, the regeneration concrete is broken into granulated slag by discarded concrete block and forms.
Haydite is roasted and resulting mixture by coconut palm charcoal shell, regeneration concrete, flyash and lime clay, is on the one hand solved Pollutions of a variety of industrial wastes to environment, concrete that will be discarded re-use, turn waste into wealth, reduce concrete production at This;On the other hand the haydite that addition coconut palm charcoal shell roasts forms active charcoal hole and further mitigates weight, coconut palm charcoal shell and stone There is the higher toughness of lime clay and intensity after adobe modification by calcination, be conducive to when concrete is made with active carbon hole Promotion cement mortar is merged with haydite, so that foam concrete is more closely knit, the crushing resistance to improve foam concrete is strong, anti- Infiltration property, while absorbing noise and making the sound insulation value of foam concrete more preferable.
(3) sand, 380~460 parts
Common river sand or mountain sand, clay content should be less than 3%.
(4) traction-resistant fibre, 3~6 parts
It is made of 55~65 parts of 35~45 parts of polypropylene fibre and light steel fibre, preferably by 35 parts of polypropylene fibre and light steel 65 parts of fiber compositions, or be made of 52 parts of 38 parts of polypropylene fibre and light steel fibre.
(5) foaming agent, 3.5~5.4 parts
4.5 parts of neopelex, 2.3 parts of superfine aluminium power, 2 parts of magnesium hydroxide powder, 1 part of sodium hydroxide, poly- second two 0.5 part of alcohol methyl glucoside dioleic acid ester, 0.2 part of triethanolamine, 0.6 part of polyacrylamide, 1 part of carboxymethyl cellulose, water 58 parts.
Foaming agent used in the present invention, be animal protein oil, vegetable oil and oxidant interaction under, either Any negative interaction will not all be generated to the producer or user and environment, and be that expansion rate is fast, foam can be made uniform, liquid Film is tough and tensile, and stability is good, and bleeding rate is low, and the duration is long, and has no effect to cementitious material.
(6) water-reducing agent, 4~7 parts
4~20 parts of sulfanilate formaldehyde condensation products, 10~15 parts of calcium lignosulfonate, ethylene oxide-propylene oxide copolymer 10~14 parts, 4~7 parts of polyethylene glycol oxide, 3~5 parts of sodium nitrite, 1~2 part of sodium hydroxide, 2~5 parts of aluminium triphosphate, cocounut oil 1~2 part of 2~3 parts of acyl diethanol amine, base phenol and ethylene oxide condensate, 2~3 parts of phenol;It is preferred that sulfanilate first 18 parts of aldehyde polycondensate, 11 parts of calcium lignosulfonate, 12 parts of ethylene oxide-propylene oxide copolymer, 4 parts of polyethylene glycol oxide, sodium nitrite 3.5 Part, 1.5 parts of sodium hydroxide, 2.6 parts of aluminium triphosphate, 3 parts of cocounut oil acyl diethanol amine, base phenol and 2 parts of ethylene oxide condensate, benzene 2 parts of phenol.
Embodiment 1
Raw material preparation: 253 parts of cement, 332 parts of haydite, 405 parts of sand, 4.2 parts of traction-resistant fibre, 200 parts of water, foaming agent 4.2 parts, 5 parts of water-reducing agent.
Foam concrete preparation:
4.2 parts of foaming agent is added in foaming bottle and water inflating pressure 4 minutes of 1.2 times of dosage of foaming, to air compressor machine Air pressure is shut down for use after boosting to 0.7MPa;
195 parts of water are added in blender and 4.2 parts of traction-resistant fibres stir 1~2 minute, then press 253 parts of cement, 332 parts The sequencing of haydite, 405 parts of sands and 5 parts of water-reducing agents is added stirring in blender and forms thick shape dope in 2~3 minutes;
The foam stirring being previously generated is added to thick shape dope, when the foam concrete slump increases in blender When 205mm, stops adding foam, then proceed to stirring foam concrete 5~6 minutes, the finished foam concrete that will be stirred evenly.
Embodiment 2
Raw material preparation:
276 parts of cement, 364 parts of haydite, 452 parts of sand, 4.6 parts of traction-resistant fibre, 236 parts of water, 4.5 parts of foaming agent, diminishing 4.7 parts of agent.
The foam concrete of embodiment 2 is prepared as described in Example 1.
Embodiment 3
Raw material preparation:
206 parts of cement, 268 parts of haydite, 456 parts of sand, 5.4 parts of traction-resistant fibre, 230 parts of water, 5.1 parts of foaming agent, diminishing 5.7 parts of agent.
The foam concrete of embodiment 3 is prepared as described in Example 1.
The foam concrete produced with embodiment 1, embodiment 2 and embodiment 3, according to existing professional standard, " foam is mixed Solidifying soil " to carry out dry density, 28d compression strength and thermal coefficient detection, testing result as follows for the test method of JG/T266:
By above-mentioned testing result it is found that being done according to the foam concrete that embodiment 1, embodiment 2, embodiment 3 are produced close Degree is up to 312-335kg/m3, average value 324kg/m3, 28d compression strength is 6.8-7.1Mpa, and average out to 6.9Mpa is led Hot coefficient meets China-styled Certain Industry Field mark in 0.02-0.04W/ (m*k), average out to 0.27W/ (m*k), water absorption rate 2.8%-3.1% Standard " foam concrete application technology regulation " JGJ/T341-2014,28d compression strength are greater than " foam concrete application technology Regulation " the corresponding intensity requirement value of JGJ/T341-2014 grade, it is less than " foam concrete application technology regulation " JGJ/T341- The corresponding thermal coefficient of 2014 middle grades.
Show that foam concrete provided by the invention can be realized that quality is lighter, intensity is bigger, hole quality is high from above, To improve it in the physical property of the various aspects such as compression strength, impermeability, sound insulation, heat-insulated.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.

Claims (7)

1. a kind of foam concrete, which is characterized in that it is made of the raw material of following mass fraction: 200~300 parts of cement, pottery Grain 250~370 parts, 380~460 parts of sand, 3~6 parts of traction-resistant fibre, 150~350 parts of water, 3.5~5.4 parts of foaming agent, diminishing 4~7 parts of agent.
2. foam concrete according to claim 1, which is characterized in that it is made of the raw material of following mass fraction: water 253 parts of mud, 332 parts of haydite, 405 parts of sand, 4.2 parts of traction-resistant fibre, 200 parts of water, 4.2 parts of foaming agent, 5 parts of water-reducing agent.
3. foam concrete according to claim 1, which is characterized in that it is made of the raw material of following mass fraction: water 276 parts of mud, 364 parts of haydite, 452 parts of sand, 4.6 parts of traction-resistant fibre, 236 parts of water, 4.5 parts of foaming agent, 4.7 parts of water-reducing agent.
4. any foam concrete according to claim 1~3, which is characterized in that the haydite its by coconut palm charcoal shell: regeneration Concrete: flyash: lime clay by mass parts ratio be 10:61:25:4 form, by regeneration concrete, flyash with And lime clay be uniformly mixed, at a temperature of 520 DEG C preheat 20~25min, after in 1180~1200 DEG C of roasting temperatures 10 Coconut palm charcoal shell is added in~15min when temperature drops to 350 DEG C, keeps the temperature 10~15min, and granulation prepares the haydite that partial size is 5~8mm; Wherein, the regeneration concrete is broken into granulated slag by discarded concrete block and forms.
5. any foam concrete according to claim 1~3, which is characterized in that the traction-resistant fibre is by polypropylene fibre 35~45 parts and 55~65 parts of light steel fibre compositions of dimension.
6. any foam concrete according to claim 1~3, which is characterized in that the foaming agent is by following parts by weight Several raw material compositions: 4.5 parts of neopelex, 2 parts of magnesium hydroxide powder, 1 part of sodium hydroxide, gathers 2.3 parts of superfine aluminium power 0.5 part of Ethylene Glycol Methyl glucoside dioleic acid ester, 0.2 part of triethanolamine, 0.6 part of polyacrylamide, carboxymethyl cellulose 1 Part, 58 parts of water.
7. any foam concrete according to claim 1~3, which is characterized in that the water-reducing agent is by following weight point Several raw material compositions: 4~20 parts of sulfanilate formaldehyde condensation products, 10~15 parts of calcium lignosulfonate, epoxy ethane-epoxy propane are total 10~14 parts of polymers, 4~7 parts of polyethylene glycol oxide, 3~5 parts of sodium nitrite, 1~2 part of sodium hydroxide, 2~5 parts of aluminium triphosphate, 1~2 part of 2~3 parts of cocounut oil acyl diethanol amine, base phenol and ethylene oxide condensate, 2~3 parts of phenol.
CN201711388971.8A 2017-12-21 2017-12-21 A kind of foam concrete Pending CN109942244A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110282930A (en) * 2019-07-10 2019-09-27 广州市建筑集团混凝土有限公司 Regeneration concrete
CN112456921A (en) * 2020-12-18 2021-03-09 中铁大桥局集团第六工程有限公司 Foam concrete for bridge deck pavement

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110282930A (en) * 2019-07-10 2019-09-27 广州市建筑集团混凝土有限公司 Regeneration concrete
CN112456921A (en) * 2020-12-18 2021-03-09 中铁大桥局集团第六工程有限公司 Foam concrete for bridge deck pavement

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