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A kind of fiber-reinforced cement-based material and preparation method thereof

A fiber reinforced cement and base material technology, applied in the field of building materials, can solve the problem that the applicability of ultra-high performance fiber reinforced cement base materials is not known, and achieve the effect of large resistivity

Active Publication Date: 2020-12-29
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in some special environments, especially marine environments with high ion concentrations, the applicability of ultra-high-performance fiber-reinforced cement-based materials is still unknown.

Method used

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  • A kind of fiber-reinforced cement-based material and preparation method thereof
  • A kind of fiber-reinforced cement-based material and preparation method thereof
  • A kind of fiber-reinforced cement-based material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The ratio of raw materials in this embodiment is shown in Table 1. In this embodiment, the volume ratio of the steel fiber SF and the pure basalt fiber BF is 3:1. The volume dosage of steel fiber SF is 1.5%, and the volume dosage of basalt fiber is 0.5%. Among them, according to the density of steel 7.8g / cm 3 And the density of basalt is 2.7g / cm 3 , the mass of fiber per cubic meter in each ratio can be calculated, that is, the mass of steel fiber and pure basalt fiber is given in Table 1.

Embodiment 2

[0031] The ratio of raw materials in this embodiment is shown in Table 1. In this embodiment, the volume ratio of steel fiber SF and pure basalt fiber BF is 1:1. The volume dosage of steel fiber SF is 1%, and the volume dosage of pure basalt fiber is 1%.

Embodiment 3

[0033] The ratio of raw materials in this embodiment is shown in Table 1. In this embodiment, the volume ratio of the steel fiber SF and the pure basalt fiber BF is 1:3. The volume dosage of steel fiber SF is 0.5%, and the volume dosage of pure basalt fiber is 1.5%.

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Abstract

The invention discloses a fiber-reinforced cement-based material and a preparation method thereof. The fiber-reinforced cement-based material comprises the following components in percentage by weight: 30-32% of cement, 10-13% of coal ash, 10-16% of coarse sand, 25-33% of fine sand, 4-6% of silica fume, 8-9% of water, and 1-1.5% of a water reducing agent, wherein the sum of the components is 100%.The fiber-reinforced cement-based material further comprises 1-2% by volume of steel fibers, and 0-1% by volume of basalt fibers. The fiber-reinforced cement-based material remains ultrahigh performance and high mechanical performance and also greatly improves the resistivity, so that the risk of electrochemical corrosion in a complex environment can be decreased.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a high-resistivity ultra-high-performance fiber-reinforced cement-based material and a preparation method thereof. Background technique [0002] Ultra-high-performance fiber-reinforced cement-based material (UHPFRC) is a cement-based material with excellent mechanical properties and durability. It is currently used in special building structures and bridges. The good mechanical properties of ultra-high-performance fiber-reinforced cement-based materials can not only effectively reduce the volume and weight of the structure, but also meet the requirements of some special structures. In order to achieve good mechanical properties, fiber reinforcement is generally used in its design, because the incorporation of fibers will limit the crack expansion when the concrete is damaged. After the matrix cracks, part of the load will be shared, and the reinforcement effect depends on the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20C04B111/92
CPCC04B28/04C04B2111/20C04B2111/92C04B2201/50C04B18/08C04B14/06C04B18/146C04B14/48C04B14/46C04B2103/302
Inventor 水中和饶苏端余睿宋秋磊
Owner WUHAN UNIV OF TECH
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