CN104609806B - A kind of sea water mixes foster coral sand artificial aggregate's concrete segment and preparation method thereof - Google Patents
A kind of sea water mixes foster coral sand artificial aggregate's concrete segment and preparation method thereof Download PDFInfo
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- CN104609806B CN104609806B CN201510041010.4A CN201510041010A CN104609806B CN 104609806 B CN104609806 B CN 104609806B CN 201510041010 A CN201510041010 A CN 201510041010A CN 104609806 B CN104609806 B CN 104609806B
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Abstract
The invention discloses a kind of sea water and mix foster coral sand artificial aggregate's concrete segment and preparation method thereof, this new type block material uses a small amount of spherical water-absorbent resin to absorb sea water to prepare the coarse aggregates such as rubble that a large amount of artificial aggregate substitutes in conventional concrete with few change more, islands and reefs coral sand is utilized to substitute the fine aggregate such as fluvial sand in conventional concrete completely, and use natural sea-water mix to produce the new concrete blockwork with inner housing honeycomb texture, wall masonry structure in islands and reefs engineering construction.This building block light weight, thermal property are good, production is simple, easy to use, reduce islands and reefs engineering construction transport of materials amount more than 60%, gathering materials on the spot and industrialization production of islands and reefs engineering construction material can be realized, provide a kind of novel building building material for solving the problems such as islands and reefs engineering construction transport of materials difficulty, cost height, cycle length.
Description
Technical field
The invention belongs to New Building Materials technical field, be specifically related to a kind of sea water and mix foster coral sand artificial aggregate's coagulation
Earth building blocks and preparation method thereof.
Background technology
China's South China Sea rich in mineral resources, strategic location is of crucial importance, and it is effective for accelerating Reef in Chinese South Sea engineering construction
Exercise sovereignty, defend tenaciously maritime traffic thoroughfare, the prerequisite of exploitation marine resources.But owing to Reef in Chinese South Sea is away from inland,
Harsh environmental conditions, material supply difficulty, islands and reefs development difficulty is big.At present, a lot of islands and reefs are not on garrison duty facility, by periphery neighbouring country
Illegally nibble and occupy, seriously constrain China's South Sea maritime rights and interests and safeguard and management and control.Therefore, it is badly in need of accelerating islands and reefs engineering construction to ask
Topic research.
Reef in Chinese South Sea does not has the construction material that can directly utilize, and needed for engineering construction, the material such as sand, stone, building block need to be in inland
Raising or Prefabrication, then off-lying sea transports to islands and reefs, its cost is high, often affected so that delaying the duration by sea situation weather；
In addition islands and reefs are with a varied topography, narrow field, and large ship cannot be close, and material turnover is had bad luck extremely difficult, thus research and utilization
Coral sand that islands and reefs are abundant and seawater resources, tissue produces building block material on the spot, to accelerating Reef in Chinese South Sea engineering construction tool
Significant.
Summary of the invention
It is an object of the invention to solve above-mentioned the problems of the prior art, propose a kind of sea for islands and reefs engineering construction
Water mixes foster coral sand artificial aggregate's concrete segment and preparation method thereof, and the method utilizes a small amount of sodium polyacrylate spherical water-absorbent tree
Fat fully absorbs sea water and expands decades of times and prepare quasi-solid-state artificial aggregate and substitute in conventional concrete the coarse aggregates such as substantial amounts of rubble,
Utilize islands and reefs coral sand to substitute the fine aggregates such as the fluvial sand in conventional concrete, use natural sea-water to substitute fresh water and mix and stir production premixing
Concrete, then water and build up various blockwork, the wall masonry structure in islands and reefs engineering construction, it is achieved islands and reefs engineering construction
Gathering materials on the spot of middle block material, self-supplying production.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of sea water mixes foster coral sand artificial aggregate's concrete segment, be the cement cementitious material by 500～750 parts, 50
～the sulphate aluminium cement of 100 parts, the artificial aggregate of 150～350 parts, the high efficiency water reducing agent of 15～30 parts, the fiber of 1～2 part,
The sea water of the coral sand of 500～800 parts and 250～340 parts mixes and stirs the concreting of production molding in Standard Module.
Described cement cementitious material is the one in portland cement, Portland cement or slag cements；Sulfur aluminic acid
Salt cement uses early-strength sulphate aluminium cement.
Described artificial aggregate is fully absorbed sea water by the sodium polyacrylate spherical water-absorbent resin of a diameter of 1～2.5mm and expands
After obtain.
Described high efficiency water reducing agent is the one in polysulfonate, polycarboxylate or melamine sulfonate.
Described fiber uses 9～18mm polypropylene fibre or alkali resistant glass fibers.
The concrete segment rupture strength made be more than 2.5MPa, comprcssive strength is 15.2～25MPa, dry density 1740～
1991kg/m3。
The invention also discloses a kind of sea water and mix the preparation method of foster coral sand artificial aggregate's concrete segment, including following
Step:
1) on islands and reefs, open up prefabricated place, sodium polyacrylate spherical water-absorbent resin is loaded permeable bag and puts into sea nearby
Water absorbs sea water, makes volumetric expansion prepare 150～350 parts of artificial aggregates, simultaneously in site recovery islands and reefs coral sand screen out miscellaneous
Thing；
2) by the cement cementitious material of 500～750 parts, the sulphate aluminium cement of 50～100 parts, 15～30 parts efficiently subtract
Water preparation, the fiber of 1～2 part, the coral sand mix and blend of 500～800 parts, add the sea of 250～340 parts while stirring
Water, and stir, add 150～350 parts of artificial aggregates, continue to stir into ready-mixed concrete, shake after finally pouring into the mold
Puddling is real, the demoulding after 3 days, sprays sea water maintenance more than 7 days, such cyclic production, obtains sea water and mix foster coral sand artificial aggregate
Concrete segment.
Described step 2) in, water reducer uses the one in polysulfonate, polycarboxylate or melamine sulfonate；Fiber
Use 9～18mm polypropylene fibre or alkali resistant glass fibers.
Described step 2) in, use manually or mechanically mode to stir into ready-mixed concrete, then adopt after being poured into Standard Module
With artificial or mechanical system vibration compacting.
Sea water prepared by a kind of said method mixes foster coral sand artificial aggregate's concrete segment, and its rupture strength is more than
2.5MPa, comprcssive strength is 15.2～25MPa, dry density 1740～1991kg/m3。
Compared with prior art, the method have the advantages that
The present invention use a small amount of sodium polyacrylate spherical water-absorbent resin fully absorb sea water expand prepare substantial amounts of quasi-solid-state
Artificial aggregate substitutes the coarse aggregates such as the rubble in conventional concrete, is simultaneously achieved " many with few change " of material；The present invention is complete
Islands and reefs coral sand and natural sea-water resource is utilized to replace the fluvial sand fine aggregate in conventional concrete and mix and stir with fresh water, it is achieved that material
" gathering materials on the spot " of material, reduces islands and reefs engineering construction raw material freight volume more than 60%, and benefit is obvious.
The present invention uses spherical water-absorbent resin artificial aggregate to be internally formed at concrete segment to have good force structure
Spherical inner housing honeycomb texture, it is ensured that material has higher intensity；Fully the spherical water-absorbent resin of water suction sea water is at coagulation
Slowly discharge water in earth building blocks, it is achieved that interior maintenance and Self-curing, improve the intensity of concrete segment；The incorporation of fiber can retrain
With the generation in prevention blockwork crack, improve block strength particularly rupture strength simultaneously.This compression strength of building block after tested
More than 15MPa, rupture strength is more than 2.5MPa, fully meets building masonry structure requirement of strength.
Further, the present invention uses polysulfonate, polycarboxylate or melamine sulfonate high efficiency water reducing agent, makes premixing
Concrete has good workability and mobility, it is ensured that concrete enters the density after mould and building block quality；Appropriate sulfur
Aluminate cement achieves the Early strength quick-setting of blockwork, improves building block production efficiency and durability；The used coral of this building block
Coral sand is natural light-weight aggregate, and inside is hollow ball honeycomb texture, and building block dry density is 1740～1991kg/m3, there is quality
Gently, the characteristic such as heat preservation energy-saving；This building block is gathered materials on the spot, is prepared in situ, is produced simply, provides a kind of new for islands and reefs engineering construction
The construction material of type.
Detailed description of the invention
Below in conjunction with embodiment, technical scheme is further described.
The present invention propose sea water mix foster coral sand artificial aggregate's concrete by cement cementitious material, sulphate aluminium cement,
High efficiency water reducing agent, fiber, artificial aggregate and coral sand, mix and stir production concrete through sea water, and its every cube each constituent mass is: mark
Number 42.5 cement cementitious materials 500～750 parts, sulphate aluminium cement 50～100 parts, artificial aggregate 150～350 parts, efficiently subtract
Water preparation 15～30 parts, fiber 1～2 parts, coral sand 500～800 parts, sea water 250～340 parts.This concrete is by artificial or machine
Tool stirring, be cast in the building block prefabricated mould of standard, make a length of 390mm, width is 90mm, 120mm, 140mm,
190mm, 240mm, 280mm, height is the hollow of 90mm, 140mm, 190mm or solid block, and building block size can be made as required
Corresponding adjustment.This building block rupture strength is more than 2.5MPa, comprcssive strength 15.2～25MPa, dry density 1740～1991kg/m3。
The preparation method of the present invention may be accomplished by:
Islands and reefs are opened up prefabricated place, in advance load weighted spherical water-absorbent resin is loaded permeable bag, put into sea nearby
Water makes it fully absorb sea water and expand preparation artificial aggregate, in site recovery coral sand screen out foreign material simultaneously；Pass through in proportion
Manually or mechanically cement cementitious material, sulphate aluminium cement, high efficiency water reducing agent, fiber and coral sand are mixed and added into appropriate sea
After water stirs, then it is proportionally added into artificial aggregate, continues to stir into ready-mixed concrete, be finally cast in standard block mould
Middle vibration compacting, the demoulding after 3 days, sprinkling sea water maintenance more than 7 days, such cyclic production.
The specific embodiment of the present invention be set forth below:
Embodiment 1
By following material and match ratio: China Resources, Hainan 42.5 Portland cement 500 parts, Shanxi special cement factory 52.5
Sulphate aluminium cement 100 parts, melamine sulfonate high efficiency water reducing agent 15 parts, polypropylene fibre 1 part, coral sand 800 parts weighs
After raw material, add about 260 parts of sea water while stirring with blender, after stirring 5～10 minutes, add artificial aggregate 250 parts and continue
Continuous stir about, after 3 minutes, is poured in the building block mould that specification is 390mm × 190mm × 190mm and shakes at vibration table
Real, the resistance to compression of field fabrication standard simultaneously and anti-folding test specimen, jointly put into maintenance in room temperature sea water.
After tested, this concrete segment rupture strength 2.5MPa, comprcssive strength 15.2MPa, dry density 1740kg/m3。
Embodiment 2
By following material and match ratio: China Resources, Hainan 42.5 Portland cement 650 parts, Shanxi special cement factory 52.5
Sulphate aluminium cement 50 parts, polycarboxylate high-efficiency water reducing agent 30 parts, polypropylene fibre 1.5 parts, coral sand 500 parts weighs raw material
After, add about 250 parts of sea water with blender while stirring, after stirring 5～10 minutes, add artificial aggregate 350 parts and continue stirring
After about 3 minutes, it is poured in the building block mould that specification is 390mm × 190mm × 190mm and in vibration table jolt ramming, simultaneously
Field fabrication standard resistance to compression and anti-folding test specimen, put into maintenance in room temperature sea water.
After tested, this concrete segment rupture strength 3.4MPa, comprcssive strength 19.7MPa, dry density 1825kg/m3。
Embodiment 3
By following material and match ratio: Hainan Lan Dao 42.5 slag cements 550 parts, Shanxi special cement factory 52.5 sulfur aluminic acid
Salt cement 75 parts, polycarboxylate high-efficiency water reducing agent 20 parts, polypropylene fibre 2 parts, after coral sand 650 parts weighs raw material, with stirring
Machine of mixing adds about 270 parts of sea water while stirring, after stirring 5～10 minutes, adds artificial aggregate 150 parts and continues stir about 3 minutes
After, it is poured in the building block mould that specification is 390mm × 190mm × 190mm and in vibration table jolt ramming, field fabrication simultaneously
Standard resistance to compression and anti-folding test specimen, put into maintenance in room temperature sea water jointly.
After tested, this concrete segment rupture strength 4MPa, comprcssive strength 25MPa, dry density 1991kg/m3。
Embodiment 4
By following material and match ratio: Hainan Lan Dao 42.5 slag cements 750 parts, Shanxi special cement factory 52.5 sulfur aluminic acid
Salt cement 50 parts, polysulfonate high efficiency water reducing agent 30 parts, polypropylene fibre 2 parts, after coral sand 500 parts weighs raw material, with stirring
Machine of mixing adds about 340 parts of sea water while stirring, after stirring 5～10 minutes, adds artificial aggregate 350 parts and continues stir about 3 minutes
After, it is poured in the building block mould that specification is 390mm × 190mm × 190mm and in vibration table jolt ramming, field fabrication simultaneously
Standard resistance to compression and anti-folding test specimen, put into maintenance in room temperature sea water jointly.
After tested, this concrete segment rupture strength 3.4MPa, comprcssive strength 19.5MPa dry density 1900kg/m3。
Above content is only the technological thought that the present invention is described, it is impossible to limit protection scope of the present invention with this, every presses
The technological thought proposed according to the present invention, any change done on the basis of technical scheme, each fall within claims of the present invention
Protection domain within.
Claims (3)
1. a sea water mixes foster coral sand artificial aggregate's concrete segment, it is characterised in that this building block concrete is by 550 parts
Cement cementitious material, the sulphate aluminium cement of 75 parts, the artificial aggregate of 150 parts, the high efficiency water reducing agent of 20 parts, the 9 of 2 parts～18mm
The sea water of polypropylene fibre, the coral sand of 650 parts and 270 parts mix and stir the concreting of production and become in Standard Module
Type；Cement cementitious material is the one in portland cement, Portland cement or slag cements；Sulphate aluminium cement uses
Early-strength sulphate aluminium cement；Artificial aggregate is fully absorbed sea by the sodium polyacrylate spherical water-absorbent resin of a diameter of 1～2.5mm
Water obtains after expanding；High efficiency water reducing agent is the one in polysulfonate, polycarboxylate or melamine sulfonate；That makes is mixed
Solidifying earth building blocks rupture strength is 4MPa, and comprcssive strength is 25MPa, dry density 1991kg/m3。
2. a sea water mixes the preparation method of foster coral sand artificial aggregate's concrete segment, it is characterised in that comprise the following steps:
1) on islands and reefs, open up prefabricated place, sodium polyacrylate spherical water-absorbent resin is loaded permeable bag and puts into nearby in sea water
Absorb sea water, make volumetric expansion prepare 150 parts of artificial aggregates, simultaneously in site recovery islands and reefs coral sand screen out foreign material；
2) by the cement cementitious material of 550 parts, the sulphate aluminium cement of 75 parts, the high efficiency water reducing agent of 20 parts, the 9 of 2 parts～18mm
Polypropylene fibre, the coral sand mix and blend of 650 parts, while stirring, add the sea water of 270 parts, and stir, then
Add 150 parts of artificial aggregates, continue to stir into ready-mixed concrete, vibration compacting after finally pouring into the mold, the demoulding after 3 days, spray
Sea water maintenance more than 7 days, such cyclic production, obtain sea water and mix foster coral sand artificial aggregate's concrete segment；
Wherein, use manually or mechanically mode to stir into ready-mixed concrete, then use manually or mechanically after being poured into Standard Module
Mode vibration compacting；Water reducer uses the one in polysulfonate, polycarboxylate or melamine sulfonate.
3. the sea water prepared by method described in claim 2 mixes foster coral sand artificial aggregate's concrete segment, and its feature exists
In: the concrete segment rupture strength made is 4MPa, and comprcssive strength is 25MPa, dry density 1991kg/m3。
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| CN105837142B (en) * | 2016-04-21 | 2018-01-12 | 武汉理工大学 | A kind of microdilatancy type coral sand concrete and preparation method thereof |
| CN105936593B (en) * | 2016-04-28 | 2018-03-20 | 中冶建筑研究总院有限公司 | A kind of seawater coral aggregate concrete |
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| CN1087886A (en) * | 1992-12-10 | 1994-06-15 | 中国人民解放军海军工程设计研究局 | Coral concrete and compound method thereof |
| CN101708985A (en) * | 2009-10-29 | 2010-05-19 | 中国人民解放军后勤工程学院 | Quick-hardening high-early strength concrete-based composite material for maritime work |
| CN103848607A (en) * | 2012-12-03 | 2014-06-11 | 中国人民解放军总后建筑工程研究所 | Maritime work mortar prepared by using artificial aggregate |
| CN103332902B (en) * | 2013-07-03 | 2015-12-23 | 武汉理工大学 | A kind of water uptake expansion resin aggregate concrete and preparation method thereof |
| CN104129960B (en) * | 2014-08-09 | 2016-04-06 | 桂林理工大学 | A kind of polypropylene fibre coral concrete and preparation method thereof |
| CN104150831B (en) * | 2014-08-09 | 2016-05-18 | 桂林理工大学 | A kind of carbon fiber coral concrete and preparation method thereof |
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