Modified basalt fiber reinforced scoria lightweight aggregate concrete and preparation method thereof

A technology of light aggregate concrete and basalt fiber, applied in the field of building materials, can solve the problems of acid-base etching degree and position difficult to fix, can not guarantee the continuity of fiber reinforcement, etc., achieve excellent mechanical properties, improve performance, The effect of enhancing chemical activity

Inactive Publication Date: 2017-09-26
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common modification treatments mainly include coupling agent treatment, acid-base treatment, surface coating, low-temperature plasma treatment, etc. The acid-base treatment method is to etch the fiber surface to produce grooves or depressions, and the grooves and The depression can play the role of anchoring, but the simple acid-base treatment changes the structure of the basalt fiber itself. The degree and location of the eclipse are difficult to fix

Method used

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  • Modified basalt fiber reinforced scoria lightweight aggregate concrete and preparation method thereof
  • Modified basalt fiber reinforced scoria lightweight aggregate concrete and preparation method thereof
  • Modified basalt fiber reinforced scoria lightweight aggregate concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Weigh 100g of sodium hydroxide solution with a concentration of 0.5mol / L, 100g of water glass with a modulus of 3, and 10g of basalt fiber;

[0028] 2) Mix the sodium hydroxide solution and the liquid water glass solution in step 1 uniformly; add 10g of basalt fiber to the mixed solution, control the temperature at 80°C, and the treatment time for 2h; filter the solution to obtain the treated basalt fiber;

[0029] 3) Mix the basalt fiber treated in step 2 with silica fume to achieve surface wrapping, and place it in a drying oven at 105°C for 3 hours to prepare modified basalt fiber for use;

[0030] 4) Weigh 100g of cement, 17.4g of slag, 21.7g of fly ash, 13g of silica fume, 0.5g of modified basalt fiber, 55.7g of 1-3mm lava, 98.7g of 3-5mm lava, 98.7 of 5-8mm lava g, 0.6g water reducing agent, 70g water;

[0031] 5) Pour the cement, slag, silica fume, fly ash, water reducing agent and other materials weighed in step 4 into the mixing pot and stir mechanically until unifo...

Embodiment 2

[0034] 1) Weigh 100g of sodium hydroxide solution with a concentration of 1mol / L, 100g of water glass with a modulus of 3, and 10g of basalt fiber;

[0035] 2) Mix the sodium hydroxide solution and the liquid water glass solution in step 1 evenly; add 10g of basalt fiber to the mixed solution, control the temperature at 60°C, and the treatment time for 2h. Basalt fiber treated by filtering the solution;

[0036] 3) Mix the basalt fiber treated in step 2 with silica fume to achieve surface wrapping, and place it in a drying box at 105°C for drying for 3 hours to prepare modified basalt fiber for use.

[0037] 4) Weigh 100g of cement, 17.4g of slag, 21.7g of fly ash, 13g of silica fume, 0.5g of modified basalt fiber, 55.7g of 1-3mm lava, 98.7g of 3-5mm lava, 98.7 of 5-8mm lava g, 0.6g water reducing agent, 70g water;

[0038] 5) Pour the cement, slag, silica fume, fly ash, water reducing agent and other materials weighed in step 4 into the mixing pot and stir mechanically until uniform...

Embodiment 3

[0041] 1) Weigh 100g of sodium hydroxide solution with a concentration of 1mol / L, 100g of water glass with a modulus of 3, and 10g of basalt fiber;

[0042] 2) Mix the sodium hydroxide solution and the liquid water glass solution in step 1 uniformly; add 10g of basalt fiber to the mixed solution, control the temperature at 80°C, and the treatment time for 1h. Basalt fiber treated by filtering the solution;

[0043] 3) Mix the basalt fiber treated in step 2 with silica fume to achieve surface wrapping, and place it in a drying box at 105°C for drying for 3 hours to prepare modified basalt fiber for use.

[0044] 4) Weigh 100g of cement, 17.4g of slag, 21.7g of fly ash, 13g of silica fume, 0.5g of modified basalt fiber, 55.7g of 1-3mm lava, 98.7g of 3-5mm lava, 98.7 of 5-8mm lava g, 0.6g water reducing agent, 70g water;

[0045] 5) Pour the cement, slag, silica fume, fly ash, water reducing agent and other materials weighed in step 4 into the mixing pot and stir mechanically until unif...

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Abstract

The invention discloses modified basalt fiber reinforced scoria lightweight aggregate concrete and further provides a preparation method thereof. The basalt fiber surface is processed to generate changes in an interface structure and chemical components of fiber, so that chemical activity of the basalt fiber surface is improved, the basalt fiber surface can form a tightly-bonded interface structure with a cement base body, excellent mechanical property of the basalt fiber is given to play, and further performance of the basalt fiber reinforced scoria lightweight aggregate concrete is improved. Smoothness and chemical inertness of the basalt fiber surface are effectively improved, so that the problem that the basalt fiber and a cement base material are difficult to bond is solved. Meanwhile, the ingredients of the modified basalt fiber reinforced scoria lightweight aggregate concrete are chosen from green and environment-friendly resources which are rich in source and low in cost; furthermore, the obtained novel modified basalt fiber reinforced scoria lightweight aggregate concrete has very excellent compressive strength, breaking strength and freezing resistance.

Description

Technical field: [0001] The invention discloses a modified basalt fiber reinforced volcanic slag lightweight aggregate concrete and also provides a preparation method thereof, belonging to the technical field of building materials. Background technique: [0002] Lightweight aggregate concrete has the characteristics of light weight, good thermal insulation and fire resistance. Compared with ordinary concrete with the same label, it can reduce its own weight by more than 20-30%, and the deformation performance of lightweight aggregate concrete is good. Lightweight and high-strength lightweight aggregate concrete has attracted people's attention. The common aggregates for preparing lightweight aggregate concrete include ceramsite, oil shale, slag, volcanic slag, etc. my country's volcanic slag resources are rich, and volcanic slag is a pure natural The lightweight aggregate is formed when the magma eruption encounters lower pressure and temperature and other external environment co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B20/02C04B20/10
CPCC04B20/023C04B20/1055C04B28/00C04B2201/50C04B14/4643C04B18/141C04B18/08C04B18/146C04B2103/302C04B22/002C04B14/14
Inventor 肖力光刘清顺李基恒
Owner JILIN JIANZHU UNIVERSITY
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