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Preparation method of energy-saving precast concrete component

A technology of prefabricated components and concrete, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of concrete structure compactness, insufficient toughness, etc. The effect of increasing

Pending Publication Date: 2020-05-15
江苏丹凤建筑集成化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the raw materials used in the existing reactive powder concrete formulations have extremely high strength, the compactness and toughness of the concrete structure are still insufficient.

Method used

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  • Preparation method of energy-saving precast concrete component
  • Preparation method of energy-saving precast concrete component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1: According to the drawings, when preparing the materials in Example 1, 450g ordinary cement, 200g ultrafine cement, 500g silica fume, 1050g quartz sand, 145.2g steel fiber, 172.5g water reducing agent, and 290g water were selected when preparing materials.

[0054] The strength test of the cured concrete test block showed that the compressive strength reached 142.6MPa and the flexural strength reached 23.8MPa.

Embodiment 2

[0055] Example 2: According to the attached drawings, when preparing the materials in Example 2, 450g ordinary cement, 200g ultrafine cement, 500g silica fume, 1050g quartz sand, 145.2g steel fiber, 14.9g crude polyvinyl alcohol fiber, and water reducing agent 172.5g, 290g water.

[0056] The strength test of the cured concrete test block showed that the compressive strength reached 143.1MPa and the flexural strength reached 34.1MPa.

Embodiment 3

[0057] Example 3: According to the drawings, when preparing the materials in Example 3, 425g ordinary cement, 150g ultrafine cement, 425g silica fume, 1050g quartz sand, 145g zeolite powder, 145.2g steel fiber, and 14.9g crude polyvinyl alcohol fiber , Water reducing agent 172.5g, water 290g.

[0058] The strength test of the cured concrete test block showed that the compressive strength reached 173.3MPa and the flexural strength reached 33.2MPa.

[0059] Through the implementation of the ratio of the components between 1-3, the original state reactive powder concrete has higher compressive strength and flexural strength. After mixing with crude polyvinyl alcohol fiber and zeolite powder, the amount of components is adjusted to prevent The compressive strength and flexural strength are increased by 21.5% and 39.5% respectively.

[0060] The beneficial effects of the present invention are:

[0061] (1) The RPC reactive powder concrete proposed by the present invention contains ordinar...

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Abstract

The invention discloses a preparation method of an energy-saving precast concrete component. The energy-saving precast concrete component is prepared from the following raw materials: ordinary cement,superfine cement, silica fume, quartz sand, zeolite powder, steel fibers, coarse polyvinyl alcohol fibers, a water reducing agent and water. Based on the total mass of the concrete, the content of the ordinary cement is 15%-18%, the content of the superfine cement is 6%-8%, the content of the silica fume is 16%-20%, the content of the quartz sand is 38%-45%, the content of the zeolite powder is 5%-8%, the added water reducing agent accounts for 1 to 1.5% of the mass of the cementing material, and the mass ratio of water to the cementing material is 0.18-0.21; based on the total volume of theconcrete, the steel fibers account for 1.5 to 2.5% of the total volume of the concrete, and coarse polyvinyl alcohol fibers account for 1 to 1.5% of the total volume of the concrete. The structure ofthe RPC component is adjusted, and the mass ratio of the components is adjusted, so that the RPC has good fluidity, the structural compactness is enhanced, the RPC has relatively strong toughness, thecompressive strength and the breaking strength are both improved; the cement consumption is reduced, and the manufacturing cost economy is improved.

Description

Technical field [0001] The invention relates to the field of preparing concrete prefabricated components, in particular to a method for preparing energy-saving concrete prefabricated components. Background technique [0002] Concrete refers to a collective term for engineering composite materials that are aggregates cemented into a whole by cementitious materials. The term concrete usually refers to cement concrete that uses cement as a cementitious material, sand and stone as aggregates; it is mixed with water (which may contain admixtures and admixtures) in a certain proportion and is mixed with cement concrete, also known as ordinary Concrete. With the development of science and technology and the requirements for the strength and density of concrete, high-strength concrete with a strength grade of C60 and above, and super high-strength concrete with a strength grade of C100 and above have been developed. But at the same time in order to demand higher structural strength, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/14C04B14/04C04B111/22
CPCC04B28/04C04B2201/50C04B2201/52C04B2111/22C04B7/00C04B18/146C04B14/06C04B14/48C04B2103/302C04B16/0641C04B14/047Y02W30/91
Inventor 姜奇丁凯
Owner 江苏丹凤建筑集成化科技有限公司