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Fast setting super early strength hydraulic pouring material

A castable and rigid technology, applied in the field of fast-setting super-early-strength hydraulic castables, can solve the problems of reduced concrete strength, small concrete slump, difficult construction, etc., to achieve fast setting time, fast strength growth, and high work performance Good results

Active Publication Date: 2016-01-20
上海星欣科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For ordinary concrete, the conventional method is to reduce the water-cement ratio to meet the requirements of early strength, and add accelerators to adjust the setting time of concrete. This method will cause the concrete to have a small slump and low fluidity. Difficult to construct inside
The single use of early-strength sulfoaluminate cement concrete can also meet the purpose of rapid setting and early strength, but the strength of the late concrete will decrease after 14 days

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A fast-setting super-early-strength hydraulic pouring material, which is made by mixing hydraulic dry powder with water and stirring evenly. The composition of the water agent, the water reducer is a compound of cyanuric acid amine and polycarboxylic acid, and the mass percentage of each component to the total mass is shown in the following table:

[0013] components percentage(%) Portland cement 14 Sulphoaluminate cement 9 sand 34 gravel 42.63 melamine 0.12 polycarboxylate 0.25

[0014] Among them, Portland cement is selected from Portland cement mixed with limestone or granulated blast furnace slag mixed with no more than 5% of the mass of Portland cement during clinker grinding, code-named PII.

[0015] The sand is selected from river sand with a particle size between 0 and 3.2mm, and the particle size of gravel is between 5mm and 16mm.

[0016] When using this example, after stirring this example evenly, add tap wa...

Embodiment 2

[0018] A fast-setting super-early-strength hydraulic castable, the percentage of the mass of each component in the total mass is shown in the following table:

[0019] components percentage(%) Portland cement 18 Sulphoaluminate cement 10 sand 32 gravel 39.84 melamine 0.08 polycarboxylate 0.08

[0020] Other components and method of use are all the same as in Example 1.

Embodiment 3

[0022] A fast-setting super-early-strength hydraulic castable, the percentage of the mass of each component in the total mass is shown in the following table:

[0023] components percentage(%) Portland cement 16 Sulphoaluminate cement 8 sand 34.78 gravel 41 melamine 0.1 polycarboxylate 0.12

[0024] Other components and method of use are all the same as in Example 1.

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PUM

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Abstract

The invention relates to the field of hydraulic portland cement, in particular to a quick-setting super-high early-strength hydraulic pouring material. The quick-setting super-high early-strength hydraulic pouring material consists of the following components, by mass percent: 14-18 percent of portland cement, 5-12 percent of sulphoaluminate cement, 31-35 percent of sand, 39-43 percent of macadam and 0.16-0.37 percent of water-reducing agent. The super-high early-strength hydraulic pouring material has the advantages of high runnability, good working performance, self-compaction performance, and quick-setting early-strength performance.

Description

technical field [0001] The invention relates to the field of hydraulic Portland cement, in particular to a fast-setting super-early-strength hydraulic pouring material. Background technique [0002] Concrete is a widely used building material. In the maintenance of buildings and facilities, due to the requirement of rapid repair, the requirement of fast setting and early strength is put forward for concrete. At present, it has been a difficult technical problem to require concrete to achieve a certain hourly strength while having good construction performance, and at the same time to meet the purpose of rapid setting and early strength. For ordinary concrete, the conventional method is to reduce the water-cement ratio to meet the requirements of early strength, and add accelerators to adjust the setting time of concrete. This method will cause the concrete to have a small slump and low fluidity. Difficult to construct inside. Single use of early-strength sulfoaluminate cem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/36
Inventor 夏玲王秋燕刘庆祝
Owner 上海星欣科技发展有限公司
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