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Ultra-high performance concrete slurry, ultra-high performance concrete and preparation method thereof

An ultra-high performance, concrete slurry technology, applied in ultra-high-performance concrete and its preparation, ultra-high-performance concrete slurry field, can solve the problems of limited use range, difficult to achieve curing conditions, and complex construction technology of ultra-high-performance concrete. , to achieve the effects of excellent mechanical properties, convenient maintenance methods, and simple production processes

Inactive Publication Date: 2019-02-01
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the complex construction process of preparing ultra-high performance concrete and the curing conditions of ultra-high performance concrete that require high-temperature autoclaving are difficult to achieve, resulting in a limited range of use

Method used

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  • Ultra-high performance concrete slurry, ultra-high performance concrete and preparation method thereof
  • Ultra-high performance concrete slurry, ultra-high performance concrete and preparation method thereof
  • Ultra-high performance concrete slurry, ultra-high performance concrete and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The embodiment of the present invention provides the first ultra-high performance concrete, and its preparation method includes the following steps:

[0048] (1) According to the weight compounding relationship in Table 1, add cement 674.21kg, microsilica fume 168.55kg, quartz powder 202.26kg, silica sand 985.5kg (including coarse particle size silica sand 703.93kg, medium particle size silica sand 201.12kg) into the forced mixer kg and fine particle size silica sand 80.45kg), stirred for 5 minutes;

[0049] (2) Then, while stirring, add 6.74kg of nano silicon dioxide, 188.10.kg of water and 41.8kg of water reducer solution (10.45kg of water reducer and 31.35kg of water are mixed and prepared), and stir for 4 minutes;

[0050] (3) Add 196.25 kg of steel fiber at last, stir for 8 minutes, and obtain ultra-high performance concrete slurry;

[0051] (4) Pour the ultra-high-performance concrete slurry into the mold three times, pouring one-third of the volume each time, us...

Embodiment 2

[0053] The embodiment of the present invention provides the second ultra-high performance concrete, and its preparation method includes the following steps:

[0054] (1) According to the weight compounding relationship in Table 1, add cement 674.21kg, microsilica fume 168.55kg, quartz powder 202.26kg, silica sand 985.5kg (including coarse particle size silica sand 703.93kg, medium particle size silica sand 201.12kg) into the forced mixer kg and fine particle size silica sand 80.45kg), stirred for 5 minutes;

[0055] (2) Then, while stirring, add 13.48kg of nano silicon dioxide, 188.10.kg of water and 41.8kg of water reducer solution (10.45kg of water reducer and 31.35kg of water are mixed and prepared), and stir for 4 minutes;

[0056] (3) Add 196.25 kg of steel fiber at last, stir for 8 minutes, and obtain ultra-high performance concrete slurry;

[0057] (4) Pour the ultra-high-performance concrete slurry into the mold three times, pouring one-third of the volume each time, ...

Embodiment 3

[0059] The embodiment of the present invention provides the third ultra-high performance concrete, and its preparation method includes the following steps:

[0060] (1) According to the weight compounding relationship in Table 1, add cement 674.21kg, microsilica fume 168.55kg, quartz powder 202.26kg, silica sand 985.5kg (including coarse particle size silica sand 703.93kg, medium particle size silica sand 201.12kg) into the forced mixer kg and fine particle size silica sand 80.45kg), stirred for 5 minutes;

[0061] (2) Then, while stirring, add 20.23kg of nano silicon dioxide, 188.10.kg of water and 41.8kg of water reducer solution (10.45kg of water reducer and 31.35kg of water are mixed and prepared), and stir for 4 minutes;

[0062] (3) Add 196.25 kg of steel fiber at last, stir for 8 minutes, and obtain ultra-high performance concrete slurry;

[0063] (4) Pour the ultra-high-performance concrete slurry into the mold three times, pouring one-third of the volume each time, u...

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Abstract

Belonging to the technical field of building materials, the invention in particular relates to an ultra-high performance concrete slurry, an ultra-high performance concrete and a preparation method thereof. The ultra-high performance concrete slurry comprises: cement, microsilica, nano silica, quartz powder, silica sand, steel fiber, a water reducing agent and water. According to the theory of theclosest packing, the adding proportion of each material is calculated, and trial mix experiments are carried out repeatedly, thus researching and developing the ultra-high performance concrete with the characteristics of minimum raw material variety, simple mixing process and maintenance technology, and the best mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to ultra-high-performance concrete slurry, ultra-high-performance concrete and a preparation method thereof. Background technique [0002] With the development of technology, engineering structures are developing in a deeper and longer direction, which puts forward higher requirements for the strength of concrete. For ordinary concrete, the amount of cement is larger to meet the same function, which intensifies the demand for energy and pollutes the environment. Therefore, ultra-high performance concrete came into being. At present, a lot of research has been carried out on ultra-high performance concrete, but its application in practical engineering is very little. The reason is that the complex construction process for preparing ultra-high performance concrete and the curing conditions of ultra-high performance concrete that require high-temperature autocl...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00008C04B2201/50C04B14/06C04B18/146C04B14/48C04B2103/302
Inventor 徐宝钦肖奇征杨泽洪谢应亮陈文峰周香江黄亮谢建和
Owner GUANGDONG UNIV OF TECH
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