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Heat-resistant cement column and preparation method therefor

A heat-resistant cement and cement technology, applied in the field of cement column preparation, can solve the problems of concrete performance damage, cement column cracking, speed up cement hydration reaction rate and water evaporation rate, etc.

Inactive Publication Date: 2015-12-09
ANHUI WUHU FLY QI CEMENT PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the different thermal properties of the materials mixed in concrete, at high temperatures, the physical and chemical interactions between these materials will cause variations in the mechanical properties of concrete. At the same time, high temperatures will accelerate the cement hydration reaction rate and water evaporation rate, reducing the cement The strength of the slurry, resulting in a significant decrease in the compressive strength and splitting tensile strength, the performance of the concrete has been greatly damaged, so that the cement column may crack or even collapse

Method used

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Examples

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preparation example Construction

[0023] The present invention also provides a preparation method of a heat-resistant cement column, the preparation method comprising:

[0024] (1) Mix cement, gravel, sand, fly ash, plant fiber, polyether ether ketone, polybutylene terephthalate, polyphenylene ether, nanometer ferric oxide, silicone, water and water reducer mixing to produce concrete;

[0025] (2) Concrete is poured into the reinforced skeleton, and then cured to obtain a heat-resistant cement column;

[0026] Wherein, the silicone is one or more of methyl silicone oil, methyltrichlorosilane and silicone rubber.

[0027] In the above preparation method, the specific types of plant fibers can be selected in a wide range, and can be one or more of rice straw, corn stalks, wood chips and cotton, from improving the heat resistance of the prepared heat-resistant cement column Considering, preferably, the plant fibers are selected from one or more of rice straw, corn stover and cotton.

[0028] Likewise, the weig...

Embodiment 1

[0037] (1) At 25°C, cement, gravel, sand, fly ash, straw, polyether ether ketone (weight average molecular weight 25000), polybutylene terephthalate (weight average molecular weight 16000), Polyphenylene ether (weight-average molecular weight: 10,000), nanometer ferric oxide (particle size: 350nm), methyl silicone oil, water and water-soluble resin sulfonate water reducer (weight ratio: 50:100:35:30 : 15: 20: 12: 20: 6: 9: 38: 3) mixed to make concrete;

[0038] (2) Concrete was poured into the steel skeleton, and then cured at 25°C for 8 days to prepare the heat-resistant cement column A1.

[0039] The compressive strength, splitting tensile strength and heat resistance parameters of the heat-resistant cement column are shown in Table 1.

Embodiment 2

[0041](1) At 25°C, cement, gravel, sand, fly ash, corn stalks, polyether ether ketone (weight average molecular weight 22000), polybutylene terephthalate (weight average molecular weight 14000) , polyphenylene ether (weight average molecular weight of 8000), nanometer ferric oxide (particle size of 300nm), methyl trichlorosilane, water and water-soluble resin sulfonate water reducing agent (weight ratio of 45:100: 25:25:8:15:8:16:5:6:35:1) mixing to make concrete;

[0042] (2) Concrete was poured into the steel skeleton, and then cured at 20°C for 10 days to prepare the heat-resistant cement column A2.

[0043] The compressive strength, splitting tensile strength and heat resistance parameters of the heat-resistant cement column are shown in Table 1.

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Abstract

The invention discloses a heat-resistant cement column. The cement column comprises cement, stones, sand, coal ash, plant fibers, polyether-ether-ketone, polybutylene terephthalate, polyphenyl ether, nano iron trioxide, organic silicon, water, and a water reducer. The invention further discloses a preparation method for the heat-resisting cement column. The preparation method comprises: (1) mixing the cement, stones, sand, coal ash, plant fibers, polyether-ether-ketone, polybutylene terephthalate, polyphenyl ether, nano iron trioxide, organic silicon, water, and the water reducer to prepare concrete; and (2) pouring the concrete into a framework of steel reinforcement, and then, curing the framework of steel reinforcement to prepare the heat-resisting cement column, wherein the organic silicon is one or more of methyl silicone oil, methyl trichlorosilane and silicon rubber. The heat-resisting cement column prepared by the method has relatively high compressive strength and splitting tensile strength, and also has extremely excellent heat resistance.

Description

technical field [0001] The invention relates to the field of cement column preparation, in particular to a heat-resistant cement column and a preparation method thereof. Background technique [0002] Cement columns, also known as concrete columns, are made of steel bars and concrete pouring. Cement columns have good durability, cheap and easy-to-obtain raw materials, high compressive strength, good fire performance, and diverse shapes. They are widely used in construction fields, such as greenhouses support columns, fences and house components, etc. [0003] Due to the different thermal properties of the materials mixed in concrete, at high temperatures, the physical and chemical interactions between these materials will cause variations in the mechanical properties of concrete. At the same time, high temperatures will accelerate the cement hydration reaction rate and water evaporation rate, reducing the cement The strength of the slurry, resulting in a significant decrease...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 朱琪
Owner ANHUI WUHU FLY QI CEMENT PROD