CN105347744A - High-strength prefabricated reinforced concrete hollow square pile - Google Patents
High-strength prefabricated reinforced concrete hollow square pile Download PDFInfo
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- CN105347744A CN105347744A CN201510820882.0A CN201510820882A CN105347744A CN 105347744 A CN105347744 A CN 105347744A CN 201510820882 A CN201510820882 A CN 201510820882A CN 105347744 A CN105347744 A CN 105347744A
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Abstract
The invention discloses a high-strength prefabricated reinforced concrete hollow square pile comprising an upper-segment pile and a lower-segment pile, and a grouting hole is formed in the center of each of the upper-segment pile and the lower-segment pile; the hollow square pile is characterized in that the upper-segment pile and the lower-segment pile each comprise the following raw materials in parts by weight: 3 parts of basalt fibers, 2 parts of steel fibers, 4 parts of glass fibers, 100 parts of cement, 90 parts of fly ash, 900 parts of gravels with the particle size of 10-15 mm, 200 parts of gravels with the particle size of 15-20 mm, 800 parts of sand, 130 parts of water, 1.5 parts of an amino-sulfonate high-efficiency water-reducing agent, 10 parts of bentonite, 0.5 part of a super plasticizer, 1 part of an air entraining agent, 0.1 part of a defoaming agent, 0.2 part of a rosin soap, 0.05 part of a tackifier, and 0.3 part of calcium stearate. The high-strength prefabricated reinforced concrete hollow square pile has higher single-pile bearing capacity, and has the strength improved by 50% or more compared with concrete of the prior art.
Description
Technical field
The present invention relates to a kind of high strength prefabricated reinforced concrete hollow square pile.
Background technology
Concrete is a kind of material of construction full of vitality.Along with the development of component materials of concrete, people improve constantly Material cladding technology understanding.Not only ultimate compression strength is confined to concrete performance requriements, but on the basis basing oneself upon intensity, more focuses on the balance and coordination of the overall targets such as concrete weather resistance, deformation performance.The requirement of concrete property indices is than clearer and more definite, refinement in the past and concrete.Meanwhile, the lifting of Architectural Equipment level, the continuing to bring out and promoting of novel construction process, concrete technology is adapted to different designs, construction and service requirements, develops very fast.
Along with the quickening of industrial development and urbanization process, concrete also becomes the preferred material of the buildings such as road, dam and bridge.Strong concrete has that intensity is high, mobility is large, early strength is high, good endurance and quality are light, the feature of material-saving Be very effective, the work of external advanced country research promotion high-strength concrete has carried out decades, and China's development of high strength is concrete starts late, current concrete intensity can not meet the requirement of society.
Along with the continuous propelling of China's urban development construction process, gradually reducing of the idle land area in urban district, cause buildings longitudinally short transverse significantly improve, plane figure is significantly compressed, in urban district, adjacent buildings spacing constantly reduces, and has higher requirement to the Design of Foundation of buildings and construction.
Current East China-Shanghai, Jiangsu, zhejiang and other places Pile Foundations Design adopt more pile foundation type to have cast-in place pile, prestressed concrete pipe pile and Prefabricated Reinforced Concrete Square Pile.It is high that cast-in place pile has bearing capacity of single pile, the feature less on surrounding enviroment impact, but it is various to have construction technology link simultaneously, the shortcomings such as operating efficiency is low, long in time limit, mechanical execution noise is large, the problems such as mud drilling construction and discharge are also very serious to the pollution of environment.Prestressed concrete pipe pile and Prefabricated Reinforced Concrete Square Pile, technological characteristics of construction is that mechanical execution efficiency is higher, and working-yard civilized construction is effective, adopts static pressure construction pollution from environmental noise less.But these two kinds of techniques have common shortcoming to be that bearing capacity of single pile is low, and soil extrusion in construction effect is comparatively large, must take into full account the protection to peripheral path pipeline and Nearby Structure during construction.These two kinds of pile-type are compared, and it is very low that prestressed concrete pipe pile bears horizontal loading ability, shearing resistance weak effect, and precast square pile is except bearing vertical load, and also can bear part horizontal loading, soil compaction effect pile tube is more a shade better again than square pile simultaneously.Several technique respectively has quality.
Therefore, need a kind of new prefabricated reinforced concrete hollow square pile to solve the problem.
Summary of the invention
Goal of the invention: the defect that the present invention is directed to high strength prefabricated reinforced concrete hollow square pile in prior art, provides a kind of high strength prefabricated reinforced concrete hollow square pile of excellent property.
Technical scheme: for solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of high strength prefabricated reinforced concrete hollow square pile, described hollow square pile comprises joint stake and lower joint stake, the center of described upper joint stake and lower joint stake is provided with grouting hole, described upper joint stake and lower joint stake include the raw material of following composition by weight: basalt fibre 3 parts, steel fiber 2 parts, 4 parts, glass fibre, cement 100 parts, 90 parts, flyash, 10-15mm Stone 900 parts, 15-20mm rubble 200 parts, 800 parts, sand, 130 parts, water, Amino-sulfonic Acid-based Water-reducer 1.5 parts, wilkinite 10 parts, superplasticizer 0.5 part, air entrapment agent 1 part, defoamer 0.1 part, rosined soap 0.2 part, tackifier 0.05 part and calcium stearate 0.3 part.
Further, described steel fiber is ordinary steel fiber.
Further, described basalt fibre length is 6-20mm, and filament diameter is 7-15um; Described length of steel fiber is 20-40mm
Further, described glass fibre is AR glass fibre.AR glass fibre is also known as alkali resistant glass fibre, and alkali resistant glass fibre is the rib material of glass fiber reinforcement (cement) concrete (being called for short GRC), and be 100% inorganic fibre, be the ideal substitute of steel and asbestos in nonweight-bearing cement components.The feature of alkali resistant glass fibre is that alkali resistance is good, be highly resistant to the erosion of high alkaloid substance in cement, bond stress is strong, Young's modulus, shock resistance, tension, bending strength are high, do not fire, freeze proof, resistance to temperature, humidity changing capability be strong, cracking resistance, anti-permeability performance are remarkable, have designability strong, the features such as easy-formation, alkali resistant glass fibre is a kind of novel environmental type strongthener.
Inventive principle: strong concrete of the present invention is a kind of high performance concrete with features such as high workability, high fillibility, high education resistances, is suitable for prefabricated reinforced concrete hollow square pile.Meticulous mix-design is carried out by selecting gelling material, different thicknesses aggregate and high performance additive, the shearing stress that concrete yielding stress being reduced to is enough to by producing because of deadweight overcomes, concrete flowability is increased, but there is not segregation and bleeding problem, space in the abundant filling template of energy, forms closely knit and uniform jelling structure.
Basalt fibre, steel fiber and glass fibre coordinate, and take full advantage of the characteristic of basalt fibre and glass fibre.Concrete tensile modulus and shearing resistance are had significantly improve.
Wherein, have employed the combination of superplasticizer, wilkinite, air entrapment agent, rosined soap, calcium stearate and Amino-sulfonic Acid-based Water-reducer, it can produce has good workability, i.e. high workability, water-retentivity, cohesiveness, be more convenient for pour into a mould chutable concrete, but do not reduce the additive of cement consumption and intensity, and can greatly improve concrete intensity.
The high strength precast concrete hollow square pile intensity using strong concrete of the present invention to prepare is higher,
Beneficial effect: high strength prefabricated reinforced concrete hollow square pile of the present invention, its bearing capacity of single pile is higher, and its intensity has the lifting of more than 50% compared to the concrete of prior art.
Embodiment
Below in conjunction with embodiment, the present invention is further described.Below be only better embodiment of the present invention; protection scope of the present invention is not limited with above-mentioned embodiment; in every case those of ordinary skill in the art modify or change according to the equivalence that disclosed content is done, and all should include in the protection domain recorded in claims.
embodiment 1
High strength prefabricated reinforced concrete hollow square pile, hollow square pile comprises joint stake and lower joint stake, the center of upper joint stake and lower joint stake is provided with grouting hole, upper joint stake and lower joint stake include the raw material of following composition by weight: basalt fibre 3 parts, steel fiber 2 parts, 4 parts, glass fibre, cement 100 parts, 90 parts, flyash, 10-15mm Stone 900 parts, 15-20mm rubble 200 parts, 800 parts, sand, 130 parts, water, Amino-sulfonic Acid-based Water-reducer 1.5 parts, wilkinite 10 parts, superplasticizer 0.5 part, air entrapment agent 1 part, defoamer 0.1 part, rosined soap 0.2 part, tackifier 0.05 part and calcium stearate 0.3 part.Wherein, steel fiber is ordinary steel fiber.
Basalt fibre length is 6-20mm, and filament diameter is 7-15um; Length of steel fiber is 20-40mm.Glass fibre is AR glass fibre.
Prepared by following steps:
(1) basalt fibre 3 parts, steel fiber 2 parts, 4 parts, glass fibre, cement 100 parts, 90 parts, flyash, 10-15mm Stone 600 parts, 15-20mm rubble 150 parts, 800 parts, sand, 130 parts, water, Amino-sulfonic Acid-based Water-reducer 1.5 parts, wilkinite 10 parts, superplasticizer 0.5 part, air entrapment agent 1 part, defoamer 0.1 part, rosined soap 0.2 part, tackifier 0.05 part and calcium stearate 0.3 part, is taken;
(2), first 3 parts of basalt fibres, 2 parts of steel fibers, 600 parts of 10-15mm Stones, 150 parts of 15-20mm rubbles are stirred and make it mix;
(3), by 100 parts of cement, 90 parts of flyash and 80 parts of water stirring makes it mix, and is then added in the mixing material that step (2) obtains, stirs and make it mix;
(4), by 1.5 parts of Amino-sulfonic Acid-based Water-reducers, 10 parts of wilkinites, 0.5 part of superplasticizer, 1 part of air entrapment agent, 0.1 part of defoamer, 0.2 part of rosined soap, 0.3 part of calcium stearate and 50 parts of water add in the mixing material that step (2) obtains, stir and make it mix;
(5), then 4 parts of glass fibre add in the mixing material that step (4) obtains, stir and make it mix, obtain high strength prefabricated reinforced concrete hollow square pile of the present invention.
Inventive principle: strong concrete of the present invention is a kind of high performance concrete with features such as high workability, high fillibility, high education resistances, is suitable for prefabricated reinforced concrete hollow square pile.Meticulous mix-design is carried out by selecting gelling material, different thicknesses aggregate and high performance additive, the shearing stress that concrete yielding stress being reduced to is enough to by producing because of deadweight overcomes, concrete flowability is increased, but there is not segregation and bleeding problem, space in the abundant filling template of energy, forms closely knit and uniform jelling structure.
Wherein, have employed the combination of superplasticizer, wilkinite, air entrapment agent, rosined soap, calcium stearate and Amino-sulfonic Acid-based Water-reducer, it can produce has good workability, i.e. high workability, water-retentivity, cohesiveness, be more convenient for pour into a mould chutable concrete, but do not reduce the additive of cement consumption and intensity, and can greatly improve concrete intensity, be more suitable for prefabricated reinforced concrete hollow square pile.
After tested: the intensity of strong concrete: 3 days intensity is 35MPa, 28 days intensity is 75MPa.
Claims (4)
1. a high strength prefabricated reinforced concrete hollow square pile, described hollow square pile comprises joint stake and lower joint stake, the center of described upper joint stake and lower joint stake is provided with grouting hole, it is characterized in that, described upper joint stake and lower joint stake include the raw material of following composition by weight: basalt fibre 3 parts, steel fiber 2 parts, 4 parts, glass fibre, cement 100 parts, 90 parts, flyash, 10-15mm Stone 900 parts, 15-20mm rubble 200 parts, 800 parts, sand, 130 parts, water, Amino-sulfonic Acid-based Water-reducer 1.5 parts, wilkinite 10 parts, superplasticizer 0.5 part, air entrapment agent 1 part, defoamer 0.1 part, rosined soap 0.2 part, tackifier 0.05 part and calcium stearate 0.3 part.
2. high strength prefabricated reinforced concrete hollow square pile as claimed in claim 1, it is characterized in that, described steel fiber is ordinary steel fiber.
3. high strength prefabricated reinforced concrete hollow square pile as claimed in claim 1, it is characterized in that, described basalt fibre length is 6-20mm, and filament diameter is 7-15um; Described length of steel fiber is 20-40mm.
4. high strength prefabricated reinforced concrete hollow square pile as claimed in claim 1, it is characterized in that, described glass fibre is AR glass fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510820882.0A CN105347744A (en) | 2015-11-24 | 2015-11-24 | High-strength prefabricated reinforced concrete hollow square pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510820882.0A CN105347744A (en) | 2015-11-24 | 2015-11-24 | High-strength prefabricated reinforced concrete hollow square pile |
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| CN105347744A true CN105347744A (en) | 2016-02-24 |
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| CN201510820882.0A Pending CN105347744A (en) | 2015-11-24 | 2015-11-24 | High-strength prefabricated reinforced concrete hollow square pile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360506A (en) * | 2017-03-08 | 2018-08-03 | 李文新 | A kind of square pile former of municipal works |
| CN112408886A (en) * | 2020-11-27 | 2021-02-26 | 浙江华为混凝土制品股份有限公司 | High-strength concrete pipe pile |
| CN112979242A (en) * | 2021-02-25 | 2021-06-18 | 江苏地基工程有限公司 | Concrete for filling hollow square pile, preparation method thereof and hollow square pile filling method |
-
2015
- 2015-11-24 CN CN201510820882.0A patent/CN105347744A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360506A (en) * | 2017-03-08 | 2018-08-03 | 李文新 | A kind of square pile former of municipal works |
| CN112408886A (en) * | 2020-11-27 | 2021-02-26 | 浙江华为混凝土制品股份有限公司 | High-strength concrete pipe pile |
| CN112979242A (en) * | 2021-02-25 | 2021-06-18 | 江苏地基工程有限公司 | Concrete for filling hollow square pile, preparation method thereof and hollow square pile filling method |
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Application publication date: 20160224 |