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High-strength and high-durability pre-stressed concrete pile and production method thereof

A technology of high-strength concrete and concrete piles, applied in the direction of reinforcement molding, ceramic molding machines, manufacturing tools, etc., to achieve the effects of clean production environment, improved strength, and improved durability

Inactive Publication Date: 2012-08-15
JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the prestressed concrete piles produced in China are difficult to meet the requirements of high durability (high frost resistance, high resistance to sulfate erosion, and high resistance to chloride ion penetration) in architectural design and actual construction.

Method used

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  • High-strength and high-durability pre-stressed concrete pile and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] High-strength and high-durability prestressed concrete piles are cast by pumping concrete, and the pumping concrete components are composed of cementitious materials, sand, gravel, high-performance water reducing agent and water; the concrete density is 2500kg / m 3 , the cementitious material is a mixture of cement and finely ground sand according to 1:0.5, the amount of cementitious material in each cubic meter of concrete is 420kg, the water-binder ratio is 0.2; the fineness modulus of sand is 2.8, and the sand ratio is 38 %; the particle size of the gravel is 5mm-25mm, and the crushing value is 5%; the water reducer is a polycarboxylate high-performance water reducer, and the solid content is 0.35% of the weight of the cementitious material.

[0018] production process:

[0019] (1) First put sand and cementitious materials into the concrete mixer and stir until uniform, then add 85% of water, and stir evenly, and finally add gravel, water reducing agent and the rema...

Embodiment 2

[0026] High-strength and high-durability prestressed concrete piles are cast by pumping concrete, which includes: cementitious materials, sand, gravel, high-performance water reducing agent and water; the capacity of pumping concrete is 2450kg / m 3 , the cementitious material is a mixture of cement and mineral powder according to 1:0.6, the amount of cementitious material in pumped concrete per cubic meter is 400kg, and the water-binder ratio is 0.30; the fineness modulus of sand is 2.9, and the sand rate is 43%; the particle size of the gravel is 5mm-25mm, and the crushing value is 5%; the water reducer is a polycarboxylate high-performance water reducer, and the solid content is 0.22% of the weight of the cementitious material.

[0027] production process:

[0028] (1) First put sand and cementitious materials into the concrete mixer and stir until uniform, then add 85% of water, and stir evenly, and finally add gravel, water reducing agent and the remaining 15% of water, an...

Embodiment 3

[0035] High-strength and high-durability concrete piles are cast by pumping concrete, which includes: cementitious materials, sand, gravel, polycarboxylate high-performance water reducer and water; the specific density of concrete is 2550kg / m 3 The cementitious material is a mixture of cement, finely ground sand and mineral powder according to 1:0.3:0.3, the amount of cementitious material in pumped concrete per cubic meter is 420kg, and the water-binder ratio is 0.28; the fineness modulus of sand The sand rate is 3.0, the sand rate is 46%; the particle size of the gravel is 5mm-25mm, and the crushing value is 5%; the water reducer is polycarboxylate high-performance water reducer, and the solid content is 0.45% of the weight of the cementitious material .

[0036] production process:

[0037] (1) First put sand and cementitious materials into the concrete mixer and stir until uniform, then add 85% of water, and stir evenly, and finally add gravel, water reducing agent and t...

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Abstract

The invention discloses a high-strength and high-durability pre-stressed concrete pile and a production method thereof. The high-strength and high-durability pre-stressed concrete pile provided by the invention is formed by casting pumped high-strength concrete. The pumped high-strength concrete comprises the following components: a binding material, fine aggregate, coarse aggregate, a polycarboxylate high-property water reducing agent and water. The pre-stressed concrete pile provided by the invention has higher strength and anti-corrosive and durable properties.

Description

technical field [0001] The invention relates to a high-strength and high-durability prestressed concrete pile and a production method thereof. Background technique [0002] The prestressed concrete pile has the characteristics of high single pile bearing capacity, low price, good bending resistance, small settlement, stable and reliable quality, fast construction speed, short construction period, civilized construction site, no sand, gravel, and cement slurry pollution. It is widely used in basic projects such as industrial buildings, civil buildings and bridges and ports. With the increasingly wide application range of prestressed concrete piles, harsh geological environments, such as oceans, ports, cold regions, and projects in western, coastal and inland areas with high concentrations of corrosive media in groundwater, also have a negative impact on prestressed concrete piles. The strength and durability of piles have put forward higher and higher requirements. At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B24/26B28B21/32B28B21/60
Inventor 苟德胜戴树斌
Owner JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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