CN104086215B - A kind of foamed concrete material and construction technology - Google Patents
A kind of foamed concrete material and construction technology Download PDFInfo
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- CN104086215B CN104086215B CN201410311981.1A CN201410311981A CN104086215B CN 104086215 B CN104086215 B CN 104086215B CN 201410311981 A CN201410311981 A CN 201410311981A CN 104086215 B CN104086215 B CN 104086215B
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Abstract
The present invention relates to a kind of foamed concrete material and construction technology, comprise cement, high efficiency water reducing agent, setting accelerator and whipping agent; Described cement is the gelling material that ordinary Portland cement, aluminosulfate cement etc. all can be used as foamed concrete; High efficiency water reducing agent is polycarboxylate, and the consumption of high efficiency water reducing agent is generally between 1.0% ~ 2.5% of cement amount; Setting accelerator is take sodium aluminate as the setting accelerator of main component, or with the setting accelerator that calcium aluminate, calcium aluminum fluoride etc. are main component, or with the accelerating chemicals that silicate Na, Si0 are main component.Construction technology, for preparing foam and slurry, observes slurry in preparation process; Mix and blend forms foamed concrete; Foamed concrete is pumped to construction operation scene; Build foamed concrete surface to strike off on request; Foamed concrete spreads woven wire after having early strength; Build lower one deck; Each layer is checked and accepted after building.The concrete intensity of this low density foam can control preferably in the scope of design requirements.
Description
Technical field
The present invention relates to the concrete structure of building field, be specifically related to independence, good application property, the weather resistance after the controllability of Lightness, the intensity of concrete material, high workability, solidification, the foamed concrete material of good heat insulation, soundproof effect and freezing and thawing performance and construction technology
Background technology
Foamed concrete is a special kinds in gas concrete, and its pore structure and material property are all close to gas concrete, and the difference of the two is the difference between pore shape and aerating means.Gas concrete pore is generally oval, and foamed concrete is by the impact of capillarity, produces distortion, forms polyhedron; Gas concrete adopts chemical gas generation, pass through chemical reaction, pore is formed by generates gas inside, foamed concrete is then the method for being steeped by machine, first whipping agent is made foam, and then foam is added in cement, magnesite, calcium plaster, form foam slurry, then form through natural curing, vapor cure.
Foamed concrete is that a kind of profit is given up, environmental protection, the novel heat insulation lagging material that energy-conservation, price is low, performance is good, it is compared with gas concrete, can natural curing sclerosis, does not generally need steam pressure; There is no the energy consumption of gas concrete steam pressure and huge facility investment, produce very simple, invest very little; The more important thing is that foamed concrete not only can be produced into various goods in factory, and can also site operation, direct cast-in-place one-tenth roofing, ground and body of wall, the kind of cellular concrete product is also much more than aerated concrete products.Except for the production of building block and wallboard, foamed concrete can also produce heat insulating refractory material, piping insulation shell, lightweight wood-imitated products, external wall insulation, color artistic ornament, foam furred ceiling, foamed gypsum goods, foam magnesite goods etc.
In recent years, along with the pulling function that Chinese architecture is energy-conservation, foamed concrete has had larger development, and annual growth is about more than 8%.Foamed concrete constantly expands in the range of application in building engineering construction field, awaits those skilled in the art develop further as a kind of composite building energy-saving material.
Summary of the invention
The object of the invention is, for prior art Problems existing, provide a kind of foamed concrete material and construction technology.
The technical scheme that the present invention deals with problems is: provide a kind of foamed concrete material, it is characterized in that, comprises cement, high efficiency water reducing agent, setting accelerator and whipping agent; Described cement is the gelling material that ordinary Portland cement, aluminosulfate cement all can be used as foamed concrete; High efficiency water reducing agent is polycarboxylate, the consumption of high efficiency water reducing agent be generally cement amount 1.0% ~ 2.5% between; Setting accelerator is take sodium aluminate as the setting accelerator of main component, or with the setting accelerator that calcium aluminate, calcium aluminum fluoride are main component, or is the setting accelerator of main component with silicate.
A construction technology for above-mentioned foamed concrete material, is characterized in that, comprises following processing step:
S1: prepare foam and slurry;
S2: mix and blend forms foamed concrete;
S3: foamed concrete is pumped to construction operation scene;
S4: build foamed concrete surface and strike off on request;
S5: foamed concrete spreads woven wire after having early strength;
S6: build lower one deck;
S7: each layer is checked and accepted after building.
Wherein preferred technical scheme is, in described S3 step, select basic unit's watering wetting according to temperature.
Preferred technical scheme buries lattice clamping plate underground at the position set between described S3 step and S4 step further.
Preferred technical scheme also has further, controls the absolute altitude of described concrete layer between 30mm ~ 80mm.
Preferred technical scheme also has, and in described S1 step, the preparation technology of slurry is slurry preparation, gelling material and stopping composition etc. is weighed and be delivered to amalgamator before slurry preparation; Water sends into amalgamator by measuring pump side simultaneously, and mixing goes out to be similar to paste slurry, prepares for adding foam.
Preferred technical scheme also has, and in described S1 step, the preparation technology of foam is that foaming machine makes foam while prepared by gelling material slurry, prepares to add stirrer and slurry mixing; Before foam processed, first by thin up after whipping agent metering, water diluent should be made.
Preferred technical scheme also has, in described S2 step, mix and blend forms the technological process of foamed concrete is after foam and gelling slurry make respectively, use machinery or manually foam added stirrer, stirring together with the gelling slurry in stirrer, produce foam slurry; By stirrer station, foam slurry is arranged that grout pump is directly delivered to working-yard to the discharging of face, storehouse.
Preferred technical scheme also has, and the technological process of building foamed concrete in described S4 step is that foamed concrete need be built by horizontal stratification, fills the filling of layer on can carrying out after instantly filling layer final set; Lift height controls at 30cm ~ 80cm.
Preferred technical scheme also has, and the parting scheme of building foamed concrete in the technological process of foamed concrete in described S4 step, for large when build area, can not complete flood when filling, carry out piecemeal before foamed concrete initial set; The size of piecemeal area is determined according to presetting period of settlement joint position, foamed concrete, lift height.
Compared with prior art, the invention has the beneficial effects as follows: this foamed concrete material and construction technology construction quality significantly improve, save the construction period, economic effect is high; Be conducive to working-yard and environment protection around.
Accompanying drawing explanation
One of construction flow chart of Fig. 1 invention foamed concrete material;
The construction flow chart two of Fig. 2 invention foamed concrete material;
Fig. 3 is that the construction technology of foamed concrete material of the present invention implements illustration.
Embodiment
The present invention is a kind of foamed concrete material, comprises cement, high efficiency water reducing agent, setting accelerator and whipping agent; Described cement is the gelling material that ordinary Portland cement, aluminosulfate cement etc. all can be used as foamed concrete; High efficiency water reducing agent is polycarboxylate, and the consumption of high efficiency water reducing agent is generally between 1.0% ~ 2.5% of cement amount; Setting accelerator is take sodium aluminate as the setting accelerator of main component, or with the step setting accelerator that calcium aluminate, calcium aluminum fluoride etc. are main component, or is the setting accelerator of main component with silicate.
A construction technology for above-mentioned foamed concrete material, comprises following processing step:
S1: prepare foam and slurry;
S2: mix and blend forms foamed concrete;
S3: foamed concrete is pumped to construction operation scene;
S4: strike off and build foamed concrete surface;
S5: foamed concrete spreads woven wire after having early strength;
S6: build lower one deck;
S7: each layer is checked and accepted after building.
Wherein preferred technical scheme is, in described S3 step, selects basic unit's watering wetting according to temperature.
Preferred technical scheme is further, and lattice clamping plate are buried at the described position in setting underground.
Preferred technical scheme also has further, controls the absolute altitude of described basic unit.
Preferred technical scheme also has, and in described S1 step, the preparation technology of slurry is that before slurry preparation, gelling material and stopping composition etc. weigh and be delivered to amalgamator; Water sends into amalgamator by measuring pump side simultaneously, and mixing goes out to be similar to paste slurry, prepares for adding foam.
Preferred technical scheme also has, and in described S1 step, the preparation technology of foam is that foaming machine makes foam while prepared by gelling material slurry, prepares to add stirrer and slurry mixing; Before foam processed, first by thin up after whipping agent metering, water diluent should be made.
Preferred technical scheme also has, in described S2 step, the technological process that mix and blend forms foamed concrete is after foam and gelling slurry make respectively, uses mechanical means that foam is added stirrer, stir together with the gelling slurry in stirrer, produce foam slurry.
Preferred technical scheme also has, and in described S4 step, the technological process of building foamed concrete is that foamed concrete need be built by horizontal stratification, fills the filling of layer on can carrying out after instantly filling layer final set; Lift height controls at 30cm ~ 80cm, and foamed concrete fills interval cast in every 12 hours 1 layer.When building need from the front end of flexible pipe directly, and flexible pipe discharge port need be imbedded in foamed concrete.
Preferred technical scheme also has, and waters in described S4 step, and the parting scheme of building foamed concrete in the technological process of foamed concrete, for large when build area, can not complete flood when filling, carry out piecemeal before foamed concrete initial set; The size of piecemeal area should with reference to settlement joint position, and determines according to presetting period of foamed concrete, equipment feed capacity and lift height.
Embodiment 1
A kind of foamed concrete material comprises:
(1) cement
Cement is the major gelled material forming foamed concrete material, and ordinary Portland cement, aluminosulfate cement etc. all can be used as the gelling material of foamed concrete.Foamed concrete is a kind of chutable concrete of flood ash, and when adopting ordinary Portland cement, the theoretical water ash ratio that cement completes aquation is about 0.227.Due to whipping agent to produce steady time of foam limited, in order to ensure bubble not broken time of coagulation that just must shorten gelling material, improve the performance of foamed concrete, PO42.5R common acid salt cement is adopted to be that gelling material is to prepare foamed concrete, adopt simultaneously and mix setting accelerator to adjust the time of coagulation of grout in ordinary Portland cement, make cement slurry setting time consistent with the steady time of foam.
(2) high efficiency water reducing agent
Polycarboxylate is latest generation high-performance water reducing agent, and in various high efficiency water reducing agent, its performance is the most excellent.
The consumption of high efficiency water reducing agent is generally between 1.0% ~ 2.5% of cement amount.Its chemical structure contains carboxyl negative ion repulsion, and the stereoeffect that the wetting ability solid protective membrane that formed of the powerful hydrogen bond that generates of multiple ether side chain and water molecule reaction produces, and makes it have extremely strong cement dispersion effect and dispersion stabilization.Its water-reducing rate, up to 30% ~ 40%, saves cement 25% when keeping intensity constant, can improve concrete strength more than 30% when keeping cement consumption not subtract.
(3) setting accelerator
Setting accelerator is a kind of admixture that can make the rapid setting and harden of concrete, and conventional setting accelerator is inorganic salts.Inorganic salts setting accelerator is broadly divided into three classes by its main component: the setting accelerator taking sodium aluminate as main component: the setting accelerator being main component with calcium aluminate, calcium aluminum fluoride etc.; Take silicate as the setting accelerator of main component.
(4) whipping agent
The foam pattern preparing foamed concrete is that mechanical high-speed stirs, and churning time is about 5 minutes, and foam now stirs existing use.Obtained foam size is even, bubble diameter is less, good stability.
The quality of conventional foaming agents quality directly has influence on the quality of foamed concrete, and the material that can produce foam has a lot, but and the material that not all can produce foam can be used for the production of foamed concrete.Only have foam expansion enough large, when foam and slip mixing the unlikely destruction of film, and there is enough stability, to the condensation of gelling material and the whipping agent of the harmful effect that harden not rise, be just applicable to for production foamed concrete.
Foamed concrete is constructed
A kind of foamed concrete material construction technology:
1, the preparation of gelling material slurry
Gelling material adopts cement.Because foam will mix in gelling material slurry, therefore first the production of foamed concrete will prepare gelling material slurry.
Before described slurry preparation, gelling material and stopping composition weigh and are delivered to amalgamator; Water sends into amalgamator by measuring pump side simultaneously, and mixing goes out to be similar to paste slurry, prepares for adding foam.
2, the preparation of foam
While prepared by gelling material slurry, foaming machine makes foam, prepares to add stirrer and slurry mixing.Before foam processed, first by thin up after whipping agent metering, water diluent should be made.
3, the mix and blend of foam and gelling slurry
After foam and gelling slurry make respectively, just can use mechanical means that foam is added stirrer, stir together with the gelling slurry in stirrer, produce foam slurry.
4, foamed concrete is built
Foamed concrete need be built by horizontal stratification, and fill filling of layer on can carrying out after instantly filling layer final set, lift height controls at 30cm ~ 80cm.
5, the parting of foamed concrete
When building area and being large, flood can not be completed when filling before foamed concrete initial set, carry out piecemeal.The size of piecemeal area should with reference to settlement joint position, and determines according to presetting period of foamed concrete, lift height.
6, maintenance
Cast in situs foamed concrete adopts conventional natural curing method.
The invention is not restricted to above-mentioned embodiment, those skilled in the art make to any apparent improvement of above-mentioned embodiment or change, all can not exceed the protection domain of design of the present invention and claims.
Claims (8)
1. a construction technology for foamed concrete material, described foamed concrete material, comprises cement, high efficiency water reducing agent, setting accelerator and whipping agent; Described cement is ordinary Portland cement, aluminosulfate cement, all can be used as the gelling material of foamed concrete; High efficiency water reducing agent is polycarboxylate, the consumption of high efficiency water reducing agent be cement amount 1.0% ~ 2.5% between; Setting accelerator is take sodium aluminate as the setting accelerator of main component, or with the setting accelerator that calcium aluminate, calcium aluminum fluoride are main component, or is the accelerating chemicals of main component with silicate, and it is characterized in that, described construction technology comprises following processing step:
S1: prepare foam and slurry;
S2: mix and blend forms foamed concrete;
S3: foamed concrete is pumped to construction operation scene, selects basic unit's watering wetting according to temperature in described S3 step;
S4: build foamed concrete surface and strike off on request;
S5: foamed concrete spreads woven wire after having early strength;
S6: build lower one deck;
S7: each layer is checked and accepted after building.
2. the construction technology of foamed concrete material as claimed in claim 1, is characterized in that, buries lattice clamping plate underground between described S3 step and S4 walk at the position set.
3. the construction technology of foamed concrete material as claimed in claim 2, is characterized in that, control the absolute altitude of described concrete layer between 30mm ~ 80mm.
4. the construction technology of foamed concrete material as claimed in claim 1, is characterized in that, in described S1, the preparation technology of slurry is slurry preparation, gelling material and stopping composition is weighed and be delivered to amalgamator before slurry preparation; Water sends into amalgamator by measuring pump side simultaneously, and mixing goes out to be similar to paste slurry, prepares for adding foam.
5. the construction technology of foamed concrete material as claimed in claim 4, it is characterized in that, in described S1, the preparation technology of foam is that foaming machine makes foam while prepared by gelling material slurry, prepares to add stirrer and slurry mixing; Before foam processed, first by thin up after whipping agent metering, water diluent should be made.
6. the construction technology of foamed concrete material as claimed in claim 1, it is characterized in that, in described S2, mix and blend forms the technological process of foamed concrete is after foam and gelling slurry make respectively, use machinery or manually foam added stirrer, stir together with the gelling slurry in stirrer, produce foam slurry; By stirrer station, foam slurry is arranged that grout pump is directly delivered to working-yard to the discharging of face, storehouse.
7. the construction technology of foamed concrete material as claimed in claim 1, it is characterized in that, the technological process of building foamed concrete in described S4 is that foamed concrete need be built by horizontal stratification, fills the filling of layer on can carrying out after instantly filling layer final set; Lift height controls at 30cm ~ 80cm, and foamed concrete fills every 12 hours of interval cast 1 layer and is advisable, when building need from the front end of flexible pipe directly, and flexible pipe discharge port need be imbedded in foamed concrete.
8. the construction technology of foamed concrete material as claimed in claim 7, it is characterized in that, the parting scheme of building foamed concrete in the technological process of foamed concrete in described S4, for comparatively large when build area, can not complete flood when filling before foamed concrete initial set, must piecemeal; The size of piecemeal area should with reference to settlement joint position, and carries out really according to presetting period of foamed concrete, equipment feed capacity and lift height.
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| CN201410311981.1A CN104086215B (en) | 2014-04-11 | 2014-07-02 | A kind of foamed concrete material and construction technology |
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| CN201410311981.1A CN104086215B (en) | 2014-04-11 | 2014-07-02 | A kind of foamed concrete material and construction technology |
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| CN104086215B true CN104086215B (en) | 2016-02-24 |
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| US9834477B1 (en) | 2017-02-28 | 2017-12-05 | Saudi Arabian Oil Company | Lightweight foam concrete with elemental sulfur |
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| CN107935626B (en) * | 2017-11-27 | 2020-12-29 | 固岩科技发展有限公司 | Construction method of rapid-hardening early-strength road |
| CN109201696B (en) * | 2018-09-30 | 2021-09-14 | 天津市瑞德赛恩水业有限公司 | Method for plugging waste crude oil pipeline |
| CN110294635B (en) * | 2019-07-05 | 2022-05-24 | 南通四建集团有限公司 | Concrete base layer guniting slurry and guniting construction method thereof |
| CN112608166B (en) * | 2020-12-21 | 2022-08-23 | 中南大学 | Cement-based carbon slate light backfill material and preparation method thereof |
| CN114621022A (en) * | 2022-03-14 | 2022-06-14 | 武汉三源特种建材有限责任公司 | Preparation method of porous concrete building material |
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| CN103359997A (en) * | 2013-02-04 | 2013-10-23 | 青岛理工大学 | Nano foam concrete, reinforced thermal insulation wallboard and preparation method of wallboard |
| CN103553513A (en) * | 2013-10-09 | 2014-02-05 | 南京工业大学 | Control method for cracking of foam concrete pouring body |
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| CN102701676A (en) * | 2012-06-12 | 2012-10-03 | 上海中锦建设集团股份有限公司 | Foam concrete material and preparation method thereof |
| CN103359997A (en) * | 2013-02-04 | 2013-10-23 | 青岛理工大学 | Nano foam concrete, reinforced thermal insulation wallboard and preparation method of wallboard |
| CN103288487A (en) * | 2013-06-26 | 2013-09-11 | 曹县霸王机械有限公司 | Foam concrete block manufactured by chemical foaming and manufacture method thereof |
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| US9834477B1 (en) | 2017-02-28 | 2017-12-05 | Saudi Arabian Oil Company | Lightweight foam concrete with elemental sulfur |
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Effective date of registration: 20180427 Address after: 450001 59 Lianhua street, high tech Development Zone, Zhengzhou, Henan Co-patentee after: SINOHYDRO Bureau 11 Co., Ltd. Patentee after: China Hydropower eleventh Engineering Bureau (Zhengzhou) Co., Ltd. Address before: No. 59, Lianhua street, Zhengzhou high tech Zone, Henan Province Patentee before: SINOHYDRO Bureau 11 Co., Ltd. |
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