CN104418550A - Concrete solid pile - Google Patents
Concrete solid pile Download PDFInfo
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- CN104418550A CN104418550A CN201310382205.6A CN201310382205A CN104418550A CN 104418550 A CN104418550 A CN 104418550A CN 201310382205 A CN201310382205 A CN 201310382205A CN 104418550 A CN104418550 A CN 104418550A
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- concrete solid
- pile
- concrete
- calcium fly
- solid pile
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides a concrete solid pile, belonging to the technical field of buildings. The concrete solid pile solves the problems that an existing pile body has insufficient bearing strength, poor tension stability, lack of activity and self-hardening property in raw materials, incapability of realizing multiple process regulation and control indexes in manufacturing processes and the like. The concrete solid pile comprises a steel bar cage as a middle framework and a concrete solid poured onto the steel bar cage, wherein the concrete solid comprises cement, gravel, slag, sand and high-calcium fly ash, the content by specific weight of high-calcium fly ash is 30%-45%, and the calcium content in high-calcium fly ash is 10%-15%. According to the concrete solid pile, high-calcium fly ash and a corresponding modifier are added in the traditional component formula and are subjected to specific weight adjustment again, so that multiple process regulation and control indexes can be realized in the manufacturing processes of a whole base pile, the compressive strength and tension stability of the whole base pile are effectively strengthened by utilizing the characteristics of high-calcium fly ash, and the concrete solid pile further has the characteristics of activity of volcanic ash, small fineness, small weight of screen residue and the like.
Description
Technical field
The invention belongs to technical field of buildings, relate to a kind of foundation pile for building, particularly a kind of concrete solid pile.
Background technology
Foundation pile is a technical term in building structure, and term associated with it also has pile foundation, multi-column pier foundation and single-pile foundation.Pile foundation: the basis be jointly made up of stake and the cushion cap that is connected to stake top.If pile body is all embedded in soil, cushion cap bottom surface contacts with the soil body, be then called embedded footing on piles, low capped pile foundation; If basset and be positioned at more than ground at the bottom of cushion cap in pile body top, be then called elevated footing on piles.Single-pile foundation: refer to that employing one pile (being generally large diameter pile) is to bear and to transmit the isolated footing of superstructure (being generally post) load.Multi-column pier foundation: refer to the pile foundation be made up of the stake of more than 2.Foundation pile: just refer to the single pile in multi-column pier foundation.In engineering survey, foundation pile refers to the concrete making measuring point with end face band cylinder metal.
Pile foundation belongs to underground concealed engineering, especially castinplace pile, very easily there is the mass defect of necking down, the folder variforms such as mud, broken pile or sediment be blocked up, affect pile construction integrity and bearing capacity of single pile, therefore supervision of construction be must carry out, script holder's record and quality examination seen, to ensure the quality of products, lessen the hidden dangers.
For post Single Pile or large-section in-situ concrete pile engineering, ensure that pile quality is just even more important.And in prior art, the composition that in pile body, concrete starting material adopt and assembly proportion, make shaping overall stake all there is bearing resistance inadequate, tension stability is poor, and starting material lack activity degree, self-hardening property, and the process control index that can not realize multinomial manufacturing processed.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose and a kind of promote the comprehensive mechanical property of overall foundation pile by composition and ratio in modulation concrete, to realize high strength and life-span permanent concrete solid pile.
Object of the present invention realizes by following technical proposal: a kind of concrete solid pile, comprise the Steel Reinforcement Cage as middle part skeleton, with the concrete solid be poured on Steel Reinforcement Cage, it is characterized in that, described concrete solid comprises cement, rubble, slag, sand and high-calcium fly ass, the content proportion of described high-calcium fly ass is 30% ~ 45%, and in described high-calcium fly ass, calcium content is 10% ~ 15%.
By the concrete each starting material proportion of regulation and control in this concrete solid pile, and then add appropriate water mix and evenly pour into a mould.In the specific gravity range of high-calcium fly ass regulation and control, foundation pile can be realized there is self-hardening property, water-reduction, and significantly promote ultimate compression strength, pozzolanic activity, and the feature such as fineness screen over-size is little, wherein compressive strength rate is 80% ~ 100%.
In above-mentioned concrete solid pile, in described concrete, add properties-correcting agent, content proportion≤5% of described properties-correcting agent.
In above-mentioned concrete solid pile, described properties-correcting agent comprises water reducer, air entrapment agent, pumping agent, retardant, hardening accelerator, water-resisting agent, rust inhibitor, swelling agent, frostproofer and tinting material.Properties-correcting agent can play following effect: (1) can reduce concrete water consumption, or does not increase water consumption and just can increase concrete degree of mobilization.(2) concrete time of coagulation can be adjusted.(3) bleeding and segregation can be reduced, improve workability and the water resistant property eluriated.(4) can slump-loss be reduced, increase the pumpability of pump concrete.(5) can reduce contraction, adding people's swelling agent can also compensate for shrinkage.(6) delay concrete initial stage hydration heat, reduce the temperature rise speed of mass concrete, reduce crack and occur.(7) improve early age strength of concrete, freeze under preventing subzero temperature.(8) improve intensity, increase frost resistance, impermeability, resistance to abrasion, erosion resistance.(9) control alkali one aggregate reaction, stop steel bar corrosion, reduce chlorine ion binding capacity.(10) concrete etc. of other properties is made.
In above-mentioned concrete solid pile, in described concrete, add defoamer.Add defoamer in concrete spouting condensing process effectively to eliminate each starting material and stir at water, or the bubble produced in combination reaction, and then ensure the tightness of condensation entity, eliminate stress void defects.
In above-mentioned concrete solid pile, the content proportion of described defoamer is 0.5% ~ 2%.
In above-mentioned concrete solid pile, the cross section of described Steel Reinforcement Cage is regular polygon, the curved limit, every bar limit of described regular polygon.The shape of Steel Reinforcement Cage is conducive to the even holding capacity of overall foundation pile, and promotes compressive strength, also has manufacturing process simple, the solid firm feature of skeleton structure.
Compared with prior art, this concrete solid pile by increasing high-calcium fly ass and corresponding properties-correcting agent in conventional components assembly, and re-starting proportion allotment, overall foundation pile manufacturing processed realizes controllable time of coagulation, controlled thickness mobility, regulates pumpability, compensate for shrinkage and prevent characteristics such as freezing thus; Utilize high-calcium fly ass characteristic effectively to strengthen the ultimate compression strength of overall foundation pile, tension stability simultaneously, and there is pozzolanic activity, and the feature such as fineness screen over-size is little.
Embodiment
Be below specific embodiments of the invention, technical scheme of the present invention is further described, but the present invention is not limited to these embodiments.
This concrete solid pile comprises the Steel Reinforcement Cage as middle part skeleton, with the concrete solid be poured on Steel Reinforcement Cage.
The cross section of Steel Reinforcement Cage is regular polygon, the curved limit, every bar limit of described regular polygon.The shape of Steel Reinforcement Cage is conducive to the even holding capacity of overall foundation pile, and promotes compressive strength, also has manufacturing process simple, the solid firm feature of skeleton structure.
Concrete solid comprises cement, rubble, slag, sand and high-calcium fly ass, and wherein the content proportion of high-calcium fly ass is 30% ~ 45%, and in high-calcium fly ass, calcium content is 10% ~ 15%.
Properties-correcting agent is added in concrete, and content proportion≤5% of properties-correcting agent.Properties-correcting agent comprises water reducer, air entrapment agent, pumping agent, retardant, hardening accelerator, water-resisting agent, rust inhibitor, swelling agent, frostproofer and tinting material.
Properties-correcting agent can play following effect: (1) can reduce concrete water consumption, or does not increase water consumption and just can increase concrete degree of mobilization.(2) concrete time of coagulation can be adjusted.(3) bleeding and segregation can be reduced, improve workability and the water resistant property eluriated.(4) can slump-loss be reduced, increase the pumpability of pump concrete.(5) can reduce contraction, adding people's swelling agent can also compensate for shrinkage.(6) delay concrete initial stage hydration heat, reduce the temperature rise speed of mass concrete, reduce crack and occur.(7) improve early age strength of concrete, freeze under preventing subzero temperature.(8) improve intensity, increase frost resistance, impermeability, resistance to abrasion, erosion resistance.(9) control alkali one aggregate reaction, stop steel bar corrosion, reduce chlorine ion binding capacity.(10) concrete etc. of other properties is made.
Add properties-correcting agent in concrete after, because kind is different, the effect of generation is also different, and majority produces physical action, and the cement particle surface that is adsorbed in such as had forms adsorption film, changes current potential, produces different suction or repulsion; Some meetings destroy flucculation structure, improve the stability of cement diffusion system, improve the condition of hydrated cementitious; What have can form macromolecular structure, changes the adsorbed state on cement particle surface; The surface tension of some meeting reduction water and surface energy etc.; Also have minority to participate in chemical reaction directly, generate new compound with cement.
Add defoamer in concrete, and the content proportion of defoamer is 0.5% ~ 2%.Add defoamer in concrete spouting condensing process effectively to eliminate each starting material and stir at water, or the bubble produced in combination reaction, and then ensure the tightness of condensation entity, eliminate stress void defects.
By the concrete each starting material proportion of regulation and control in this concrete solid pile, and then add appropriate water mix and evenly pour into a mould.In the specific gravity range of high-calcium fly ass regulation and control, foundation pile can be realized there is self-hardening property, water-reduction, and significantly promote ultimate compression strength, pozzolanic activity, and the feature such as fineness screen over-size is little, wherein compressive strength rate is 80% ~ 100%.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (6)
1. a concrete solid pile, comprise the Steel Reinforcement Cage as middle part skeleton, with the concrete solid be poured on Steel Reinforcement Cage, it is characterized in that, described concrete solid comprises cement, rubble, slag, sand and high-calcium fly ass, the content proportion of described high-calcium fly ass is 30% ~ 45%, and in described high-calcium fly ass, calcium content is 10% ~ 15%.
2. concrete solid pile according to claim 1, is characterized in that, adds properties-correcting agent in described concrete, content proportion≤5% of described properties-correcting agent.
3. concrete solid pile according to claim 2, is characterized in that, described properties-correcting agent comprises water reducer, air entrapment agent, pumping agent, retardant, hardening accelerator, water-resisting agent, rust inhibitor, swelling agent, frostproofer and tinting material.
4. concrete solid pile according to claim 1, is characterized in that, adds defoamer in described concrete.
5. concrete solid pile according to claim 5, is characterized in that, the content proportion of described defoamer is 0.5% ~ 2%.
6. concrete solid pile according to any one of claim 1 to 5, is characterized in that, the cross section of described Steel Reinforcement Cage is regular polygon, the curved limit, every bar limit of described regular polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310382205.6A CN104418550A (en) | 2013-08-27 | 2013-08-27 | Concrete solid pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310382205.6A CN104418550A (en) | 2013-08-27 | 2013-08-27 | Concrete solid pile |
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| Publication Number | Publication Date |
|---|---|
| CN104418550A true CN104418550A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310382205.6A Pending CN104418550A (en) | 2013-08-27 | 2013-08-27 | Concrete solid pile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796311A (en) * | 2020-08-24 | 2021-05-14 | 北京中岩大地科技股份有限公司 | Construction method for high-speed deep stirring |
| CN113387663A (en) * | 2021-06-04 | 2021-09-14 | 中铁大桥局第七工程有限公司 | Super early strength high-strength concrete and preparation method thereof |
-
2013
- 2013-08-27 CN CN201310382205.6A patent/CN104418550A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796311A (en) * | 2020-08-24 | 2021-05-14 | 北京中岩大地科技股份有限公司 | Construction method for high-speed deep stirring |
| CN113387663A (en) * | 2021-06-04 | 2021-09-14 | 中铁大桥局第七工程有限公司 | Super early strength high-strength concrete and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
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| WD01 | Invention patent application deemed withdrawn after publication |