Unreinforced precast concrete thin-wall pile and manufacturing method and application thereof

A prefabricated concrete and thin-walled pile technology, applied in the field of prefabricated pile manufacturing, can solve the problems of poor economy, large amount of steel and high cost of foundation reinforcement scheme, and achieve high cost performance and practicability, improved bearing capacity, and large expansion area. Effect

Inactive Publication Date: 2021-01-12
FUJIAN DADI CONCRETE PILE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The prefabricated piles used for stiff composite foundations are currently mainly reinforced concrete prefabricated pipe piles, which have the advantages of good mechanical prope...

Method used

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  • Unreinforced precast concrete thin-wall pile and manufacturing method and application thereof
  • Unreinforced precast concrete thin-wall pile and manufacturing method and application thereof
  • Unreinforced precast concrete thin-wall pile and manufacturing method and application thereof

Examples

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preparation example Construction

[0036] Step 1, preparation of ultra-high performance concrete:

[0037] Put sand, cement, and admixtures into a forced mixer and stir evenly. After adding about 30% of water while stirring, continue to add water reducing agent, air-entraining agent, composite fiber and the remaining water and continue stirring until the fluidity meets the requirements. According to the technical requirements, fresh concrete with a slump of 70-120mm is made.

[0038] Step 2. Make thin-walled piles:

[0039]The freshly mixed concrete after stirring is distributed, molded, and centrifugally formed to make pipe piles with a wall thickness of 30-50mm; After the concrete strength reaches the demoulding standard, remove the formwork and let it stand for a period of time, and then put it in an autoclave to continue the secondary curing, so that the concrete of the pile body can reach the strength standard of C80 and above when it leaves the factory.

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Abstract

The invention relates to the technical field of precast pile manufacturing, in particular to an unreinforced precast concrete thin-wall pile and a preparation method thereof, and the unreinforced precast concrete thin-wall pile is prepared from the following raw material components in parts by weight: 400-700 parts of cement, 50-100 parts of mineral admixture, 700-1000 parts of sand, 100-250 partsof water, 5-20 parts of admixture, 3-8 parts of air entraining agent and 70-130 parts of composite fiber. The raw materials are stirred and mixed to prepare newly mixed concrete with the slump of 70-120 mm, and then a thin-wall pile with the wall thickness of 30-50 mm is manufactured. The invention further relates to application of the unreinforced prefabricated concrete thin-wall pile in a stiffbody composite foundation. The unreinforced precast concrete thin-wall pile manufactured by the method is large in bearing capacity, good in pile body corrosion resistance and durability, low in steel consumption and high in cost performance, and has a wide application prospect.

Description

【Technical field】 [0001] The invention relates to the technical field of prefabricated pile manufacturing, in particular to an unreinforced prefabricated concrete thin-walled pile and its manufacturing method and application. 【Background technique】 [0002] Prefabricated piles are widely used in construction, municipal engineering and other fields because of their reliable product quality and high construction efficiency. more abundant types. Unreinforced prefabricated concrete thin-walled pile is a new type of concrete prefabricated pile, which has large bearing capacity, good corrosion resistance and durability of the pile body, less consumption of steel, high cost performance, and has broad application prospects. [0003] For some low-rise buildings such as villas, factory buildings, and underground stations whose foundations are on soft ground, using deep foundation piles as foundation force-bearing piles, although reliable in performance, is obviously not economical; ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/14C04B18/08C04B14/48C04B14/38C04B14/10B28B11/24B28B21/30E02D5/30
CPCB28B11/245B28B21/30C04B14/106C04B14/386C04B14/48C04B18/085C04B18/146C04B28/04C04B2201/50E02D5/30C04B14/06C04B2103/302C04B2103/304Y02W30/91
Inventor 滕祖基杨金辉杨晓彬董伟东冯三苟林丽华周艳文
Owner FUJIAN DADI CONCRETE PILE
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