CN103075009A - Construction method of filler wall with cast-in-place foamed concrete - Google Patents
Construction method of filler wall with cast-in-place foamed concrete Download PDFInfo
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- CN103075009A CN103075009A CN201310028078XA CN201310028078A CN103075009A CN 103075009 A CN103075009 A CN 103075009A CN 201310028078X A CN201310028078X A CN 201310028078XA CN 201310028078 A CN201310028078 A CN 201310028078A CN 103075009 A CN103075009 A CN 103075009A
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Abstract
The invention relates to a construction method of a filler wall with cast-in-place foamed concrete, which belongs to the technical field of the construction work of a building. According to the construction method of the filler wall with the cast-in-place foamed concrete, the liquid state of foamed concrete manufactured by slurry manufactured by a cementing material, an aggregate, an admixture, water and the like after being processed by a foaming process is directly poured into a template of a wall body so as to manufacture the filler wall with foamed concrete. The raw materials of the construction method of the filler wall with the cast-in-place foamed concrete are few, and the environment is protected; moreover, the construction process is simple; the obtained filler wall with the foamed concrete has the characteristics of light quality, low rebound, heat insulation, heat preservation, fire resistance, shock absorption, high integrality and durability, good waterproof effect and the like; and moreover, the manufacturing cost is low, the effects of environmental protection and economy are achieved, the self heat preserving performance and the self sound insulating performance of the wall body can be enhanced under the precondition of ensuring that the structural strength of the wall body of a building is not changed, the secondary external heat-preserving construction of the wall body of the building is reduced, and the construction cost of the wall body of the building is greatly lowered. According to the construction method disclosed by the invention, a construction method of a filler wall with cast-in-place foamed concrete is systematically summarized. The construction method of the filler wall with the cast-in-place foamed concrete can be used for directing construction and has universal direction value.
Description
Technical field
The invention belongs to the construction engineering technical field, be specifically related to a kind of cast-in-place foamed concrete infilled wall job practices.
Background technology
Along with socioeconomic development, no matter from whole international economy weather or the Chinese macroscopic economy general trend of events, energy problem is increasingly severe, and energy conservation is imperative, and the constructional materials that has in recent years the energy-conserving and environment-protective concept is subject to the favor in giving special assistance to of country and market day by day.Foam concrete wall is as a kind of novel heat-insulating heat-preserving material, and because of obvious, the stable physical property of its heat insulation and preservation effect, it is simple and direct and cheap to construct, and expands to the body of wall application gradually at present.General job practices is that aerated concrete wall is prone to the crack in original materials for wall at present; In external-wall heat-insulation material, the polyurethane heat-insulation cost is too high, and polystyrene board wall body exists flammable and rear release of burning has the insecurity of poisonous gas.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the present invention is to provide a kind of cast-in-place foamed concrete infilled wall job practices.
Described cast-in-place foamed concrete infilled wall job practices is characterized in that comprising the steps:
1) with reference to design drawing, design according to wall form, load, foundation soil classification, construction equipment and material supply, build template and support thereof, template and support thereof have enough supporting capacitys, rigidity and stability, can bear reliably weight, lateral pressure and the working load of building foam concrete, and reinforced mesh is set in template;
2) preparation foam crystal: in the foaming bucket, add blowing agent and water, inflating pressure 3-6min, to air compressor machine air pressure boost to 0.6-0.8Mpa obtain blowing agent bubble slurry after shutdown stand-by, the throwing amount weight ratio of described blowing agent and water is 1:12-13;
3) strengthen stirring in the commercial concrete adding secondary mixer with the job site, prevent the generation of the phenomenons such as cement paste skinning, layering, segregation;
4), with in the step 3) through the uniform commercial concrete of secondary mixer mix through suction system to the blowing agent bubble slurry mixing tube with to obtain foam concrete after blowing agent bubble slurry fully mixes for subsequent use, the mixed bubble time is 3～5min, and blowing agent bubble slurry is 0.3-0.8:1 with concrete rate of charge;
5) foam concrete that step 4) is obtained is built in template, adopt the hammering template way to vibrate when building, the described mouthful severity control that buries is between 150-350mm, it is identical with atmospheric pressure to build mouth pressure, slurry is flowed out in the template of step 1) naturally, obtain the foam concrete infilled wall;
6) covered and moisture-keeping maintaining with interior foam concrete to step 5) at the 12h that builds after complete, form removal after 3 days, then covered with plastic film moisture-keeping maintaining or spraying curing fluid capable, the time of foam concrete moisture-keeping maintaining or spraying curing fluid capable is no less than 14 days.
Described cast-in-place foamed concrete infilled wall job practices is characterized in that described reinforced mesh adopts suspension method to be fixed in the template, and it is by the welded net of two-way 100mm, and bar diameter is not less than 2mm, and following two kinds of set-up modes are arranged:
1) when the design drawing thickness of wall body is 100-150mm, the individual layer reinforced mesh is set, this individual layer reinforced mesh is arranged on the position, middle of module;
2) when the design drawing thickness of wall body is 150-200mm, double steel bar net sheet is set, every layer of reinforced mesh is separately positioned on template inwall both sides, and the distance between the template inwall is 30mm.
Described cast-in-place foamed concrete infilled wall job practices is characterized in that the charging aperture place of the secondary mixer described in the step 3) installs screen pack additional, and the caking in the slurry etc. is filtered, and guarantees the uniformity of material, and anti-equipment stops up.
Described cast-in-place foamed concrete infilled wall job practices is characterized in that the foam concrete described in the step 4) in transportation, its horizontal pumping distance≤500m, vertical pumping distance≤100m.
Described cast-in-place foamed concrete infilled wall job practices, when it is characterized in that described horizontal pumping distance surpasses 500m, the method that adopts the foam crystal to separate the relaying pumping with commercial concrete is carrying out continuing pumping after the foam crystal mixes with commercial concrete from the position of building in the 200m of position.
Described cast-in-place foamed concrete infilled wall job practices, when it is characterized in that described vertical pumping distance surpasses 100m, the foam crystal separates the method for relaying pumping with commercial concrete, carrying out continuing pumping after the foam crystal mixes with commercial concrete from the position of building in the 100m of position.
Described cast-in-place foamed concrete infilled wall job practices is characterized in that foam concrete infilled wall once-cast height is no more than 3m; The height of pumping discharging opening and casting area is no more than 1000mm during cast.
Described cast-in-place foamed concrete infilled wall job practices adopts when it is characterized in that the cast of described foam concrete to bury and mouthful builds.
By adopting above-mentioned technology, compared with prior art, beneficial effect of the present invention is as follows:
1) foam concrete wall construction of the present invention, the foam concrete liquid condition of commercial concrete through making behind the foam process that cementitious material, aggregate, Admixture and water etc. are made, directly be cast in the method for making the lightweight cellular concrete heat-preserving wall in the wall form, the energy guiding construction has the generality guiding value;
2) of the present invention because the foam concrete that adopts blowing agent, water and commercial concrete to be mixed to get is made the foam concrete infilled wall, have the characteristics such as the low bullet of lightweight, heat-insulation and heat-preservation, fire-resistant damping, globality and durability height, good water-proof effect, and cheap, reach the effect of environmental protection and economy;
3) foam concrete and the pouring technology of the present invention that obtain by adopting this prescription of the present invention, can guarantee under the constant prerequisite of construction wall structural strength, improve heat-insulating property and the sound insulation value of body of wall self, reduce construction wall secondary construction of exterior insulation system, decrease construction wall construction cost.
4) work progress of the present invention need not any extra additional vibrating, just in casting process gently evenly the hammering template get final product, greatly reduce labour intensity, artificial consumption few, save labour cost, and its easy construction, duration weak point;
5) behind the foam concrete infilled wall casting complete of the present invention, the later stage easy maintenance, and construction quality is good, reliability is high, effective wall body slit of having controlled, and it is cast-in-place foamed concrete infilled wall job practices to be carried out systematicness sum up, the energy guiding construction has the generality guiding value.
The specific embodiment
Below the invention will be further described:
Cast-in-place foamed concrete infilled wall job practices of the present invention specifically comprises the steps:
1) with reference to design drawing, according to wall form, load, the foundation soil classification, construction equipment and material supply design, build template and support thereof, template and support thereof will have enough supporting capacitys, rigidity and stability, can bear reliably the weight of building foam concrete, lateral pressure and working load, simultaneously assembling reinforcement net sheet, and reinforced mesh is set in template, described reinforced mesh adopts suspension method to be fixed in the module, reinforcing bar in the pillar at reinforced mesh and precast body of wall two ends arranges tension rib, establishes 2 φ, 6 reinforcing bars by every 500mm height, tension rib length 〉=700mm; Its reinforced mesh is by the welded net of two-way 100mm, bar diameter is not less than 2mm, can bear reliably weight, lateral pressure and the working load of building foam concrete, and reinforced mesh is set in template, increase the firmness of body of wall, described reinforced mesh adopts suspension method to be fixed in the module, and reinforced mesh has following two kinds of set-up mode: a, when the design drawing thickness of wall body is 100-150mm, the individual layer reinforced mesh is set, and this individual layer reinforced mesh is arranged on the position, middle of module; B, when the design drawing thickness of wall body is 150-200mm, double steel bar net sheet is set, every layer of reinforced mesh is separately positioned on template inwall both sides, and the distance between the template inwall is 30mm;
2) preparation foam crystal: in the foaming bucket, add blowing agent and water, inflating pressure 3-6min, to air compressor machine air pressure boost to 0.6-0.8Mpa obtain blowing agent bubble slurry after shutdown stand-by, the throwing amount weight ratio of described blowing agent and water is 1:12-13;
3) by truck with grout mixer and water tank the materials such as cementitious material, aggregate, Admixture and water are made commercial concrete according to a conventional method, be transported to the job site, truck with grout mixer and water tank must not stop in transportation halfway, and haulage time should not surpass the initial setting time in the way, initial setting time is generally 2 hours, when commercial concrete arrives the job site, should should install screen pack additional at the charging aperture of secondary mixer before the discharging, the caking in the slurry etc. is filtered, guarantee the uniformity of material, and anti-equipment stops up;
4), with in the step 3) through the uniform commercial concrete of secondary mixer mix through suction system to the blowing agent bubble slurry mixing tube with to obtain foam concrete after blowing agent bubble slurry fully mixes for subsequent use, the mixed bubble time is 3～5min; Blowing agent bubble slurry with concrete rate of charge is: 0.3-0.8:1, determine match ratio according to foam concrete intensity by test room, if require foam concrete intensity high, then the amount of blowing agent bubble slurry adds a little less, because blowing agent bubble slurry has been added, the foam concrete hole seam that obtains is many, causes concrete density low, intensity is low, otherwise then the amount of blowing agent bubble slurry adds more;
5) foam concrete that step 4) is obtained is built in template, adopt the hammering template way to vibrate when building, the described mouthful severity control that buries is between 150-350mm, it is identical with atmospheric pressure to build mouth pressure, slurry is flowed out in the template of step 1) naturally, obtain the foam concrete infilled wall; Because during the foam concrete construction, may be subject to the restriction in place etc., and distant between the template, in order to guarantee the quality of foam concrete, foam concrete in transportation, its horizontal pumping distance≤500m, vertical pumping distance≤100m, when horizontal pumping distance surpassed 500m, the method that adopts the foam crystal to separate the relaying pumping with commercial concrete was carrying out continuing pumping after the foam crystal mixes with commercial concrete from the position of building in the 200m of position; When vertical pumping distance surpassed 100m, the foam crystal separated the method for relaying pumping with commercial concrete, was carrying out continuing pumping after the foam crystal mixes with commercial concrete from the position of building in the 100m of position; Foam concrete infilled wall once-cast height is no more than 3m, the height of pumping discharging opening and casting area is no more than 1000mm during cast, too much damaged to prevent the excessive bubble that causes of impact force, adopt during foam concrete of the present invention cast to bury and mouthful build, bury mouthful severity control between 150-350mm, forbid adopt to spray and build, and build mouth pressure should be identical with atmospheric pressure, slurry is flowed out in the template naturally pours into a mould;
6) covered and moisture-keeping maintaining with interior foam concrete to step 5) at the 12h that builds after complete, the time of foam concrete moisture-keeping maintaining is no less than 14 days, after moisture-keeping maintaining finishes, stripping, template should be able to guarantee that surface of wall and corner angle are injury-free during dismounting, thereby obtains the foam concrete infilled wall.
Claims (8)
1. cast-in-place foamed concrete infilled wall job practices is characterized in that comprising the steps:
1) with reference to design drawing, design according to wall form, load, foundation soil classification, construction equipment and material supply, build template and support thereof, template and support thereof have enough supporting capacitys, rigidity and stability, can bear reliably weight, lateral pressure and the working load of building foam concrete, and reinforced mesh is set in template;
2) preparation foam crystal: in the foaming bucket, add blowing agent and water, inflating pressure 3-6min, to air compressor machine air pressure boost to 0.6-0.8Mpa obtain blowing agent bubble slurry after shutdown stand-by, the throwing amount weight ratio of described blowing agent and water is 1:12-13;
3) strengthen stirring in the commercial concrete adding secondary mixer with the job site, prevent the generation of the phenomenons such as cement paste skinning, layering, segregation;
4), with in the step 3) through the uniform commercial concrete of secondary mixer mix through suction system to the blowing agent bubble slurry mixing tube with to obtain foam concrete after blowing agent bubble slurry fully mixes for subsequent use, the mixed bubble time is 3～5min, and blowing agent bubble slurry is 0.3-0.8:1 with concrete rate of charge;
5) foam concrete that step 4) is obtained is built in template, adopt the hammering template way to vibrate when building, the described mouthful severity control that buries is between 150-350mm, it is identical with atmospheric pressure to build mouth pressure, slurry is flowed out in the template of step 1) naturally, obtain the foam concrete infilled wall;
6) covered and moisture-keeping maintaining with interior foam concrete to step 5) at the 12h that builds after complete, form removal after 3 days, then covered with plastic film moisture-keeping maintaining or spraying curing fluid capable, the time of foam concrete moisture-keeping maintaining or spraying curing fluid capable is no less than 14 days.
2. cast-in-place foamed concrete infilled wall job practices according to claim 1 is characterized in that described reinforced mesh adopts suspension method to be fixed in the template, and it is by the welded net of two-way 100mm, and bar diameter is not less than 2mm, and following two kinds of set-up modes are arranged:
1) when the design drawing thickness of wall body is 100-150mm, the individual layer reinforced mesh is set, this individual layer reinforced mesh is arranged on the position, middle of module;
2) when the design drawing thickness of wall body is 150-200mm, double steel bar net sheet is set, every layer of reinforced mesh is separately positioned on template inwall both sides, and the distance between the template inwall is 30mm.
3. cast-in-place foamed concrete infilled wall job practices according to claim 1, the charging aperture place that it is characterized in that the secondary mixer described in the step 3) installs screen pack additional, caking in the slurry etc. is filtered, guarantee the uniformity of material, and anti-equipment stops up.
4. cast-in-place foamed concrete infilled wall job practices according to claim 1 is characterized in that the foam concrete described in the step 4) in transportation, its horizontal pumping distance≤500m, vertical pumping distance≤100m.
5. cast-in-place foamed concrete infilled wall job practices according to claim 4, when it is characterized in that described horizontal pumping distance surpasses 500m, the method that adopts the foam crystal to separate the relaying pumping with commercial concrete is carrying out continuing pumping after the foam crystal mixes with commercial concrete from the position of building in the 200m of position.
6. cast-in-place foamed concrete infilled wall job practices according to claim 4, when it is characterized in that described vertical pumping distance surpasses 100m, the foam crystal separates the method for relaying pumping with commercial concrete, carrying out continuing pumping after the foam crystal mixes with commercial concrete from the position of building in the 100m of position.
7. cast-in-place foamed concrete infilled wall job practices according to claim 1 is characterized in that foam concrete infilled wall once-cast height is no more than 3m; The height of pumping discharging opening and casting area is no more than 1000mm during cast.
8. cast-in-place foamed concrete infilled wall job practices according to claim 1 adopts when it is characterized in that described foam concrete cast to bury and mouthful builds.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103321306A (en) * | 2013-06-18 | 2013-09-25 | 嘉兴职业技术学院 | Construction process for glazed hollow bead thermal mortar on side wall of biogas generating pit |
| CN103467130A (en) * | 2013-08-29 | 2013-12-25 | 昆山生态屋建筑技术有限公司 | Fabrication technology for foam concrete crust member |
| CN103817794A (en) * | 2014-02-28 | 2014-05-28 | 浙江海天建设集团有限公司 | Premixed slurry fluid foam concrete onsite stirring construction method |
| CN103899090A (en) * | 2014-02-28 | 2014-07-02 | 浙江海天建设集团有限公司 | Premixed slurry fluid foam concrete construction technology |
| CN103938870A (en) * | 2014-03-27 | 2014-07-23 | 焦作建工集团有限公司 | Lightweight concrete and normal concrete synchronously-pouring method |
| CN105648892A (en) * | 2015-12-31 | 2016-06-08 | 长安大学 | Arch bridge structure adopting foam concrete and corrugated steel sheets and construction method of arch bridge structure |
| CN108005274A (en) * | 2017-08-21 | 2018-05-08 | 大连正锐装配式住宅发展股份有限公司 | The split type method for preparing light foam concrete cast-in-situ wall |
| CN108726958A (en) * | 2018-08-14 | 2018-11-02 | 李艳义 | A method of preparing concrete partition using building castoff |
| CN113103421A (en) * | 2021-03-24 | 2021-07-13 | 江西雄宇（集团）有限公司 | Manufacturing method of self-heat-preservation non-bearing wallboard |
| CN113818602A (en) * | 2021-09-08 | 2021-12-21 | 浙江重誉防水保温工程有限公司 | Construction process of cast-in-place foam concrete self-insulation wall |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321306A (en) * | 2013-06-18 | 2013-09-25 | 嘉兴职业技术学院 | Construction process for glazed hollow bead thermal mortar on side wall of biogas generating pit |
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| CN103899090A (en) * | 2014-02-28 | 2014-07-02 | 浙江海天建设集团有限公司 | Premixed slurry fluid foam concrete construction technology |
| CN103938870B (en) * | 2014-03-27 | 2015-11-18 | 焦作建工集团有限公司 | The synchronous pouring construction method of a kind of light weight concrete construction and ordinary concrete |
| CN103938870A (en) * | 2014-03-27 | 2014-07-23 | 焦作建工集团有限公司 | Lightweight concrete and normal concrete synchronously-pouring method |
| CN105648892A (en) * | 2015-12-31 | 2016-06-08 | 长安大学 | Arch bridge structure adopting foam concrete and corrugated steel sheets and construction method of arch bridge structure |
| CN108005274A (en) * | 2017-08-21 | 2018-05-08 | 大连正锐装配式住宅发展股份有限公司 | The split type method for preparing light foam concrete cast-in-situ wall |
| CN108726958A (en) * | 2018-08-14 | 2018-11-02 | 李艳义 | A method of preparing concrete partition using building castoff |
| CN113103421A (en) * | 2021-03-24 | 2021-07-13 | 江西雄宇（集团）有限公司 | Manufacturing method of self-heat-preservation non-bearing wallboard |
| CN113818602A (en) * | 2021-09-08 | 2021-12-21 | 浙江重誉防水保温工程有限公司 | Construction process of cast-in-place foam concrete self-insulation wall |
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Application publication date: 20130501 |