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Basalt fiber-reinforced active powder concrete and preparation method thereof

A basalt fiber, powder concrete technology, applied in the field of new building materials, can solve the problems of easy corrosion, environmental pollution, insufficient durability of active powder concrete, etc., and achieve the effect of changing the damage form and the availability of raw materials

Inactive Publication Date: 2014-01-15
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for a long time, steel fiber is an essential part of the mix ratio of reactive powder concrete. Although steel fiber has a strong advantage in improving the mechanical properties of reactive powder concrete, steel fiber itself has certain disadvantages: in temperature, water, It is easy to corrode in the external environment such as salt solution, resulting in insufficient durability of reactive powder concrete. At the same time, there are problems such as heavy weight and easy environmental pollution during the manufacturing process.

Method used

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  • Basalt fiber-reinforced active powder concrete and preparation method thereof
  • Basalt fiber-reinforced active powder concrete and preparation method thereof
  • Basalt fiber-reinforced active powder concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1- Embodiment 4

[0025] Example 1-Example 4: Basalt fiber reinforced reactive powder concrete. See Table 1 for raw materials and specifications, and Table 2 and Table 3 for material ratios and properties.

[0026] Table 1 Raw materials and specifications

[0027] Material

[0028] Table 2 Basalt fiber (6mm) of the present invention strengthens RPC and comparative example proportioning

[0029]

[0030] Note: The amount of water reducer is the mass fraction of the cementitious material, where the cementitious material is the sum of cement and silica fume; the amount of basalt fiber is the volume amount.

[0031] Table 3 Comparison of main properties of RPC reinforced with basalt fiber (6mm) of the present invention and common RPC

[0032] serial number

[0033] It can be seen from the above that basalt fiber can improve the brittleness of reactive powder concrete to a certain extent, play a role in strengthening and toughening, and the improvement of splitting tensile...

Embodiment 5- Embodiment 8

[0034] Example 5-Example 8: Basalt fiber (12mm) reinforced reactive powder concrete. See Table 1 for raw materials and specifications, and Table 4 and Table 5 for material ratios and properties.

[0035] Table 4 basalt fiber (12mm) of the present invention strengthens RPC and comparative example proportioning

[0036]

[0037]

[0038] Note: The amount of water reducer is the mass fraction of the cementitious material, where the cementitious material is the sum of cement and silica fume; the amount of basalt fiber is the volume amount.

[0039] Table 5 The present invention's basalt fiber (12mm) reinforced RPC main properties and comparison with common RPC

[0040] serial number

[0041] It can be seen from the above that 12mm long basalt fibers can improve the brittleness of reactive powder concrete to a certain extent, and play a role in strengthening and toughening, and with the increase of basalt fiber content, the splitting tensile strength of concrete i...

Embodiment 9- Embodiment 10

[0042] Example 9-Example 10: Basalt fiber reinforced reactive powder concrete (electrical flux experiment). See Table 1 for raw materials and specifications, and Table 6 and Table 7 for material ratios and properties.

[0043] Table 6 The ratio of basalt fiber reinforced RPC of the present invention and comparative examples (electrical flux experiment)

[0044]

[0045] Note: The amount of water reducer is the mass fraction of the cementitious material, where the cementitious material is the sum of cement and silica fume; the amount of basalt fiber is the volume amount.

[0046] Table 7 basalt fiber reinforced RPC anti-permeability of the present invention and comparison with common RPC

[0047] serial number

[0048] Comparative example 2

[0049] It can be seen from the above that the incorporation of basalt fiber has a certain effect on reducing the electric flux of active powder concrete, thereby improving the chloride ion permeability of active po...

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Abstract

The invention belongs to the technical field of novel construction materials, and specifically relates to a basalt fiber-reinforced active powder concrete (BFRPC) and a preparation method thereof. The basalt fiber-reinforced active powder concrete is composed of cement, silicon powder, quartz sand, a water reducer, water and basalt fiber according to a certain ratio. By employing basalt fiber (BF) resisting acidic / alkali salts, the active powder concrete is substantially improved in durability than steel fiber-reinforced active powder concrete. By employing basalt fiber with proper specification and selecting proper doped amount, the prepared active powder concrete is obviously improved in compressive strength and rupture strength than fiber-free active powder concrete. The basalt fiber-reinforced active powder concrete provides a material base for preparation of high-strength structural elements and high-durability structural elements working in a salt corrosion environment.

Description

technical field [0001] The invention belongs to the technical field of new building materials, and in particular relates to a basalt fiber reinforced reactive powder concrete (BFRPC) and a preparation method thereof. Background technique [0002] Reactive Powder Concrete (RPC) is a new type of concrete material developed by France in the mid-1990s with many advantages such as high strength, high toughness, and high durability. It was first used in nuclear reactor waste Storage container making. It is composed of graded quartz sand, cement, admixtures, admixtures and other main parts, and is cured by high-temperature steam during the process of setting and hardening to improve the microstructure of the finished product. [0003] Due to its ultra-high strength and other excellent properties, it has been widely valued by the international civil engineering community, and has been widely used in engineering in recent years. But for a long time, steel fiber is an essential part...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 安明喆郑遵畅
Owner BEIJING JIAOTONG UNIV