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Supersulphated cement-based glass fiber concrete

A technology of ultra-sulfate cement and glass fiber, which is applied in the field of building materials, can solve the problems of concrete toughness and splitting strength decline, and achieve the effect of high service life and improved durability

Inactive Publication Date: 2013-11-27
CHINA STATE CONSTR READY MIXED CONCRETE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a glass fiber concrete based on super sulfate cement, which can effectively solve the problem of brittleness of glass fibers often caused by alkali erosion, resulting in severe toughness and splitting strength of concrete falling problem

Method used

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  • Supersulphated cement-based glass fiber concrete
  • Supersulphated cement-based glass fiber concrete
  • Supersulphated cement-based glass fiber concrete

Examples

Experimental program
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Embodiment 1

[0021] A glass fiber concrete based on super sulfate cement, its components are shown in Table 1 by parts by weight, wherein the components of super sulfate cement by parts by weight are: 90 parts of blast furnace slag, composite activator 10 parts; The components of the composite activator are calculated in parts by weight: 60 parts of desulfurized gypsum, 25 parts of cement clinker, 15 parts of sulphoaluminate cement, the Al 2 o 3 The content is 60%.

[0022] The glass fiber is medium alkali-resistant glass fiber, immersed in 10wt% sodium hydroxide solution, placed in a water bath at 100°C for 1 hour, and its weight loss after soaking in alkali is 8.12%; the diameter of the monofilament of the glass fiber is 6um , the average number of bridging oxygen ions is 3.32.

[0023] The preparation method of the above-mentioned glass fiber concrete based on super sulfate cement: (1) batching: weighing sand, stone, super sulfate cement, water, water reducing agent, and glass fiber a...

Embodiment 2

[0026] The present embodiment is based on the glass fiber concrete of super sulfate cement, and the components are shown in Table 1 by weight parts, wherein the components of the super sulfate cement are: 85 parts of blast furnace slag, composite activator 15 parts; The components of the composite activator are calculated in parts by weight: 65 parts of phosphogypsum, 20 parts of cement clinker, 15 parts of aluminate cement, the Al 2 o 3 The content is 55wt%.

[0027] The glass fiber is non-alkali-resistant glass fiber, immersed in 10wt% sodium hydroxide solution, placed in a water bath at 100°C for 1 hour, and the weight loss after soaking in alkali is 10.78%; the diameter of the monofilament of the glass fiber is 10um , The average number of bridging oxygen ions is 3.90.

[0028] The preparation method of the glass fiber concrete based on super sulfate cement in this embodiment is the same as in Example 1, and the main properties of the glass fiber concrete based on super ...

Embodiment 3

[0030] The present embodiment is based on the glass fiber concrete of super sulfate cement, and each component is counted in Table 1 by weight part, wherein the component of described super sulfate cement is counted as: blast furnace slag 82 parts, composite activator 18 parts; The components of the composite activator are calculated in parts by weight: 70 parts of fluorogypsum, 20 parts of calcium hydroxide, 10 parts of sodium aluminate, the Al of the sodium aluminate 2 o 3 The content is 62wt%.

[0031] The glass fiber is non-alkali-resistant glass fiber, immersed in 10wt% sodium hydroxide solution, placed in a water bath at 100°C for 1 hour, and its weight loss after soaking in alkali is 10.41%; the diameter of the monofilament of the glass fiber is 10 μm , The average number of bridging oxygen ions is 2.86.

[0032] The preparation method of the glass fiber concrete based on super sulfate cement in this embodiment is the same as in Example 1, and the main properties of t...

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Abstract

The invention discloses supersulphated cement-based glass fiber concrete. The supersulphated cement-based glass fiber concrete comprises, by weight, 1 part of supersulphated cement, 0.01-0.10 parts of glass fibers, 1.8-2.6 parts of sand, 2.5-3.3 parts of stone, 0.29-0.52 parts of water and 0.01-0.025 parts of a water reducer. The supersulphated cement comprises, by weight, 70-90 parts of granulated blast-furnace slag and 10-30 parts of a composite exciting agent. The composite exciting agent comprises an alkaline exciting agent, a sulfate exciting agent and an aluminate exciting agent. The glass fibers have medium alkali-resistance or no alkali-resistance and have a mercerization weight loss ratio more than 5%. The supersulphated cement-based glass fiber concrete can obviously improve alkali erosion resistance and a service life of glass fiber concrete.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a glass fiber concrete based on super sulfate cement. Background technique [0002] Cement concrete is the largest building material today. With the deepening of research, the problem of poor toughness of cement concrete has become increasingly prominent. Fiber, as the main toughening material of cement-based composite materials, can rely on its interface bonding with the matrix to bear loads and delay The appearance and expansion of cracks in the matrix can improve the toughness of cement concrete. As one of the most important toughening materials, glass fiber has high elastic modulus and strength, and has good bonding performance with concrete interface. It is easy to use in cement concrete. Dispersion and other excellent properties; when glass fiber is mixed into concrete, a uniform three-dimensional random distribution support system can be formed inside the concrete, which ...

Claims

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Application Information

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IPC IPC(8): C04B28/08C04B14/42
Inventor 王军高育欣余保英
Owner CHINA STATE CONSTR READY MIXED CONCRETE CO LTD
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