CN104264881A - Magnesium cement lightweight aggregate concrete hollow box board - Google Patents
Magnesium cement lightweight aggregate concrete hollow box board Download PDFInfo
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- CN104264881A CN104264881A CN201410468896.6A CN201410468896A CN104264881A CN 104264881 A CN104264881 A CN 104264881A CN 201410468896 A CN201410468896 A CN 201410468896A CN 104264881 A CN104264881 A CN 104264881A
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- magnesium cement
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- lightweight aggregate
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Abstract
The invention discloses a magnesium cement lightweight aggregate concrete hollow box board composed of magnesium cement lightweight aggregate concrete, reinforcing steel bars and a lightweight composite box. The dry apparent density of the magnesium cement lightweight aggregate concrete is 1800-1950kg/m<3> and 15% to 30% less than that of ordinary concrete and the strength of the magnesium cement lightweight aggregate concrete can reach common strength grades of ordinary concrete. By means of the magnesium cement lightweight aggregate concrete hollow box board, the structural self-weight can be reduced, the use amount of concrete can be saved, and the overall cost can be reduced; furthermore, the seismic response force, floor shear force, bending moment, the maximum floor displacement and the like of the structure can be reduced, so that every mechanical performance can meet standard requirements. The magnesium cement lightweight aggregate concrete hollow box board has good fireproof, acoustic insulation and thermal insulation performance, obvious energy-saving and thermal insulation effects and good economic, social and environmental protection benefits and is suitable for large-scale application to large-span bridge structures, high-rise buildings and marine engineering.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of magnesium cement Hollow Lightweight Concrete Block boxboard.
Background technology
Construction technology of GBF is one development and the innovation of existing plank frame construction technology, its technical characteristics is embedded in coagulation by high-strength composite pipe (or lightweight composite box) to become permanent core, and make it shaping a kind of cast-in-situ hollow building roof.This technology not only significantly can alleviate superstructure deadweight, and rigidity is large; And the mechanical property of material can be given full play to, concentrate and to solve in design indoor direction is intensive and be difficult to ensure the many contradictions such as interior net storey height because structural beams is arranged in length and breadth, make structure more rational; And there is reduction floor height, the advantages such as soundproof effect is good, and anti-seismic performance is good; Be conducive to pipeline to bury underground, save template, accelerating construction progress and reduce engineering cost, its comprehensive benefit is better.
Meanwhile, advocating the 21 century of building energy conservation, country improves constantly the requirement of building aseismicity performance and energy-conserving and environment-protective performance.Light weight aggregate concrete (especially haydite concrete) owing to having the feature of lightweight and good thermal and insulating performance, just from non bearing structure toward load-carrying members future development.The features such as Hollow Lightweight Concrete Block boxboard has high strength, lightweight, thermal and insulating performance is good, antidetonation, decay resistance are remarkable, it is a kind of Multifunction floor, be specially adapted to highrise building, Large Span Bridges and ocean engineering etc. that structure dead load accounts for larger proportion, its application prospect is boundless.
Magnesium cement has the early feature such as solidifying high-strength, water-fast, high temperature resistant, the present invention adopts magnesium cement light weight aggregate concrete and bar pouring to build up hollow boxboard, compared with traditional ordinary concrete hollowcore slab, there is high-strength light, anti-seismic performance is excellent, fire line is good, thermal insulation and excellent in durability, have broad application prospects in long-span bridges, highrise building and maritime engineering, and carrying out and implementing along with the strategy of sustainable development, the advantage of the hollow boxboard of the present invention will highlight more.
Summary of the invention
The object of the present invention is to provide a kind of magnesium cement Hollow Lightweight Concrete Block boxboard, there is high-strength light, anti-seismic performance is excellent, fire line is good, thermal insulation and excellent in durability, by the Comprehensive Correlation of each economic targets such as energy consumption, the economy of the hollow boxboard that magnesium cement light weight aggregate concrete of the present invention is made, society and environmental benefit are remarkable.
For achieving the above object, the present invention adopts following technical scheme:
A kind of magnesium cement Hollow Lightweight Concrete Block boxboard is made up of magnesium cement light weight aggregate concrete, reinforcing bar and lightweight composite box; Good by template colligation by reinforcing bar, put into lightweight composite box wherein, cast magnesium cement light weight aggregate concrete makes its shaping rear form removal make.
In described magnesium cement light weight aggregate concrete, each component and consumption thereof are:
Magnesium cement 450 ~ 500 kg/m
3;
Sand 650 ~ 700 kg/m
3;
Lightweight aggregate 500 ~ 600 kg/m
3;
Water 150 ~ 200 kg/m
3;
High efficiency water reducing agent 8 ~ 10 kg/m
3;
The dry apparent density of described magnesium cement light weight aggregate concrete is 1800 ~ 1950kg/m
3.
Described magnesium cement is made up of potassium dihydrogen phosphate, dead burnt magnesite powder and borax; Wherein the consumption of potassium dihydrogen phosphate is 8 ~ 10% of concrete quality, the consumption of dead burnt magnesite powder is 24 ~ 30% of concrete quality, the consumption of borax is 0.5 ~ 1.5% of concrete quality.
Described lightweight aggregate comprises haydite, scoria and gangue; Wherein haydite is one or more in haydites of book structure, lytag and leca.
Remarkable advantage of the present invention is:
(1) in high level, super highrise building, adopt magnesium cement light weight aggregate concrete to substitute conventional concrete and prepare hollow boxboard, dead load can be made to reduce by 10% ~ 20%.When earthquake occurs, because the deadweight of geological process and superstructure is directly proportional, adopt the magnesium cement Hollow Lightweight Concrete Block boxboard that the present invention proposes, the horizontal shear that earthquake can be made to produce reduces greatly.In addition, the modulus of elasticity of magnesium cement light weight aggregate concrete is low, and dead load is little, and compared with the hollow boxboard of conventional concrete, better, anti-seismic performance is better for magnesium cement Hollow Lightweight Concrete Block boxboard deformability of the present invention and ductility.
(2) adopt magnesium cement Hollow Lightweight Concrete Block boxboard of the present invention, can dead load be alleviated, reduce beam, column cross-section size, increase building usable floor area; Reduce the arrangement of reinforcement on beam, shear wall and basis, reduce the load passing to basis, thus reduce foundation cost.
(3) thermal transmittance of magnesium cement light weight aggregate concrete of the present invention is 1/2 ~ 1/3 of ordinary concrete, and heat inertia index is larger, and thermal property (insulation and heat-proof quality) is good; Make obtained magnesium cement Hollow Lightweight Concrete Block boxboard sound insulation and fireproof performance good, comfort level is good, and energy-saving effect is obvious.
(4) magnesium cement Hollow Lightweight Concrete Block plate of the present invention can realize real flat board, and can arbitrarily fix one's room up general layout; Simultaneously because concrete in floor is evacuated in a large number, reduce the deadweight of structure, but dull and stereotyped rigidity can not be reduced, the requirement of novel floor system of modern architecture large span, large space can be met, be the important development direction of following cast-in-place concrete floor, have broad application prospects.
(5) lightweight aggregate used in magnesium cement light weight aggregate concrete of the present invention, the mud etc. in shale, industrial waste, fuel waste residue and rivers and lakes can be adopted to produce as raw material, make the cyclic utilization of waste, effectively can reduce the consumption of natural resource, environmental benefit is obvious.
Accompanying drawing explanation
Fig. 1 is the structural representation of magnesium cement Hollow Lightweight Concrete Block boxboard cross section of the present invention, wherein 1-reinforcing bar; 2-magnesium cement light weight aggregate concrete; 3-lightweight composite box.
Detailed description of the invention
More being convenient to make content of the present invention understand, below in conjunction with detailed description of the invention, technical solutions according to the invention are described further, but the present invention being not limited only to this.
embodiment 1
A kind of magnesium cement Hollow Lightweight Concrete Block boxboard is made up of magnesium cement light weight aggregate concrete, reinforcing bar and lightweight composite box; Good by template colligation by reinforcing bar, put into lightweight composite box wherein, cast magnesium cement light weight aggregate concrete makes its shaping rear form removal make.
In described magnesium cement light weight aggregate concrete, each component and consumption thereof are:
Magnesium cement 475 kg/m
3;
Sand 676 kg/m
3;
Lightweight aggregate 560 kg/m
3;
Water 180 kg/m
3;
High efficiency water reducing agent 9 kg/m
3;
The dry apparent density of described magnesium cement light weight aggregate concrete is 1870kg/m
3.
Described magnesium cement is made up of potassium dihydrogen phosphate, dead burnt magnesite powder and borax; Wherein the consumption of potassium dihydrogen phosphate is 9% of concrete quality, the consumption of dead burnt magnesite powder is 27% of concrete quality, the consumption of borax is 1% of concrete quality.
The constituent of described lightweight aggregate is haydites of book structure.
embodiment 2
A kind of magnesium cement Hollow Lightweight Concrete Block boxboard is made up of magnesium cement light weight aggregate concrete, reinforcing bar and lightweight composite box; Good by template colligation by reinforcing bar, put into lightweight composite box wherein, cast magnesium cement light weight aggregate concrete makes its shaping rear form removal make.
In described magnesium cement light weight aggregate concrete, each component and consumption thereof are:
Magnesium cement 450 kg/m
3;
Sand 650 kg/m
3;
Lightweight aggregate 500 kg/m
3;
Water 150 kg/m
3;
High efficiency water reducing agent 8 kg/m
3;
The dry apparent density of described magnesium cement light weight aggregate concrete is 1800kg/m
3.
Described magnesium cement is made up of potassium dihydrogen phosphate, dead burnt magnesite powder and borax; Wherein the consumption of potassium dihydrogen phosphate is 8% of concrete quality, the consumption of dead burnt magnesite powder is 24% of concrete quality, the consumption of borax is 0.5% of concrete quality.
Described lightweight aggregate be haydites of book structure with leca in mass ratio 1:1 mix.
embodiment 3
A kind of magnesium cement Hollow Lightweight Concrete Block boxboard is made up of magnesium cement light weight aggregate concrete, reinforcing bar and lightweight composite box; Good by template colligation by reinforcing bar, put into lightweight composite box wherein, cast magnesium cement light weight aggregate concrete makes its shaping rear form removal make.
In described magnesium cement light weight aggregate concrete, each component and consumption thereof are:
Magnesium cement 500 kg/m
3;
Sand 700 kg/m
3;
Lightweight aggregate 600 kg/m
3;
Water 200 kg/m
3;
High efficiency water reducing agent 10 kg/m
3;
The dry apparent density of described magnesium cement light weight aggregate concrete is 1950kg/m
3.
Described magnesium cement is made up of potassium dihydrogen phosphate, dead burnt magnesite powder and borax; Wherein the consumption of potassium dihydrogen phosphate is 10% of concrete quality, the consumption of dead burnt magnesite powder is 30% of concrete quality, the consumption of borax is 1.5% of concrete quality.
Described lightweight aggregate adopts scoria.
Magnesium cement light weight aggregate concrete of the present invention is early solidifying high-strength, water-fast, high temperature resistant, the magnesium cement Hollow Lightweight Concrete Block cabinet board structure sound insulation utilizing it to be prepared into and fireproof performance good, conduct oneself with dignity little, anti-seismic performance is good, can effectively increase building usable floor area, reduce construction costs, be applicable to the construction that structure dead load accounts for the highrise building of larger proportion, Large Span Bridges and ocean engineering etc.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. a magnesium cement Hollow Lightweight Concrete Block boxboard, is characterized in that: described hollow boxboard is made up of magnesium cement light weight aggregate concrete, reinforcing bar and lightweight composite box; Good by template colligation by reinforcing bar, put into lightweight composite box wherein, cast magnesium cement light weight aggregate concrete makes its shaping rear form removal make.
2. magnesium cement Hollow Lightweight Concrete Block boxboard according to claim 1, is characterized in that: in described magnesium cement light weight aggregate concrete, each component and consumption thereof are:
Magnesium cement 450 ~ 500 kg/m
3;
Sand 650 ~ 700 kg/m
3;
Lightweight aggregate 500 ~ 600 kg/m
3;
Water 150 ~ 200 kg/m
3;
High efficiency water reducing agent 8 ~ 10 kg/m
3;
The dry apparent density of described magnesium cement light weight aggregate concrete is 1800 ~ 1950kg/m
3.
3. magnesium cement Hollow Lightweight Concrete Block boxboard according to claim 2, is characterized in that: described magnesium cement is made up of potassium dihydrogen phosphate, dead burnt magnesite powder and borax; Wherein the consumption of potassium dihydrogen phosphate is 8 ~ 10% of concrete quality, the consumption of dead burnt magnesite powder is 24 ~ 30% of concrete quality, the consumption of borax is 0.5 ~ 1.5% of concrete quality.
4. magnesium cement Hollow Lightweight Concrete Block boxboard according to claim 2, is characterized in that: described lightweight aggregate comprises haydite, scoria and gangue; Wherein haydite is one or more in haydites of book structure, lytag and leca.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410468896.6A CN104264881A (en) | 2014-09-16 | 2014-09-16 | Magnesium cement lightweight aggregate concrete hollow box board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410468896.6A CN104264881A (en) | 2014-09-16 | 2014-09-16 | Magnesium cement lightweight aggregate concrete hollow box board |
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| CN104264881A true CN104264881A (en) | 2015-01-07 |
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| CN201410468896.6A Pending CN104264881A (en) | 2014-09-16 | 2014-09-16 | Magnesium cement lightweight aggregate concrete hollow box board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961433A (en) * | 2015-07-02 | 2015-10-07 | 齐国清 | Cinder light partition board |
| CN106542790A (en) * | 2016-10-21 | 2017-03-29 | 中国建筑第八工程局有限公司 | gangue light aggregate concrete and preparation method thereof |
| CN108301538A (en) * | 2018-03-22 | 2018-07-20 | 吉林长发建筑产业化有限公司 | Filling wall and its construction method under a kind of prefabricated windows |
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| CN1297095A (en) * | 1999-11-22 | 2001-05-30 | 邱则有 | In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and its construction method |
| EP1233115A1 (en) * | 2001-02-16 | 2002-08-21 | Pietro Sacco | Structural element for installation of floors in combination with boards of foam construction material |
| CN201050128Y (en) * | 2007-03-05 | 2008-04-23 | 刘泳霞 | Cast in-situ light aggregate reinforcing steel concrete composite floor slab |
| CN102425231A (en) * | 2011-12-24 | 2012-04-25 | 福州大学 | Reinforcement lightweight aggregate concrete flat beam structure |
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2014
- 2014-09-16 CN CN201410468896.6A patent/CN104264881A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297095A (en) * | 1999-11-22 | 2001-05-30 | 邱则有 | In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and its construction method |
| EP1233115A1 (en) * | 2001-02-16 | 2002-08-21 | Pietro Sacco | Structural element for installation of floors in combination with boards of foam construction material |
| CN201050128Y (en) * | 2007-03-05 | 2008-04-23 | 刘泳霞 | Cast in-situ light aggregate reinforcing steel concrete composite floor slab |
| CN102425231A (en) * | 2011-12-24 | 2012-04-25 | 福州大学 | Reinforcement lightweight aggregate concrete flat beam structure |
Non-Patent Citations (2)
| Title |
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| 孙加保，初万鹏: "《建设工程项目质量控制实务》", 30 September 2008, article "现浇钢筋混凝土空心楼板施工质量控制", pages: 230-233 * |
| 郭谦: "《建筑装饰材料》", 31 January 2013 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961433A (en) * | 2015-07-02 | 2015-10-07 | 齐国清 | Cinder light partition board |
| CN106542790A (en) * | 2016-10-21 | 2017-03-29 | 中国建筑第八工程局有限公司 | gangue light aggregate concrete and preparation method thereof |
| CN108301538A (en) * | 2018-03-22 | 2018-07-20 | 吉林长发建筑产业化有限公司 | Filling wall and its construction method under a kind of prefabricated windows |
| CN108301538B (en) * | 2018-03-22 | 2024-02-02 | 吉林长发建筑产业化有限公司 | Prefabricated window lower filling wall and construction method thereof |
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Application publication date: 20150107 |
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