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Fly ash based geopolymer grouting material and preparation method for same

A technology of fly ash and grouting materials, which is applied in the field of building materials, can solve the problems of low strength in the later stage, low strength in the later stage, and short setting time, and achieve high early strength and later strength, good fluidity and workability, and preparation The effect of simple process

Inactive Publication Date: 2016-12-14
ZHUODA NEW MATERIALS TECH GRP WEIHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sulphoaluminate cement used has the characteristics of rapid hardening, early strength and low later strength. As a result, the grouting material has low fluidity, short setting time, poor workability, low later strength, and high strength while meeting the characteristics of early strength and high strength. Problems such as high cost, a large amount of steel slag is used and the admixture with expansion compensation is not mentioned in the formula, which may easily lead to problems such as shrinkage and cracking in the later stage of the grouting material

Method used

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  • Fly ash based geopolymer grouting material and preparation method for same
  • Fly ash based geopolymer grouting material and preparation method for same
  • Fly ash based geopolymer grouting material and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare raw materials according to the following components and weight: 20kg of modified water glass, 30kg of fly ash, 10kg of metakaolin, 5kg of ordinary Portland cement with a label grade of 42.5, 60kg of natural river sand with a fineness modulus of 2.3, and 0.05 sucrose kg, alkyl silicone oil 0.03kg, hydroxypropyl methylcellulose ether 0.01kg, water 10kg.

[0029] Prepare the fly ash base polymer grout according to the following steps:

[0030] (1) use sodium hydroxide to adjust the modulus of modified water glass to be 1.0, and the concentration is 30%;

[0031] (2) Mix the adjusted modified water glass with other raw materials, stir for 3 minutes, let stand for 1 minute, and then stir for 2 minutes to obtain the grouting material.

[0032] The performance test results of the grouting material prepared according to the above method are as follows:

[0033]

[0034]

Embodiment 2

[0036] Prepare raw materials according to the following components and weights: 20kg of modified water glass, 40kg of fly ash, 5kg of ordinary Portland cement with a label grade of 42.5R, 60kg of quartz sand with a fineness modulus of 2.5, 0.05kg of citric acid, castor Sesame oil 0.03kg, hydroxypropyl methylcellulose ether 0.01kg, water 10kg.

[0037] Prepare the fly ash base polymer grout according to the following steps:

[0038] (1) use sodium hydroxide to adjust the modulus of modified water glass to be 1.2, and the concentration is 35%;

[0039] (2) Mix the adjusted modified water glass with other raw materials, stir for 4 minutes, let stand for 1.5 minutes, and then stir for 2.5 minutes to obtain the grout.

[0040] The performance test results of the grouting material prepared according to the above method are as follows:

[0041]

[0042]

Embodiment 3

[0044] Prepare raw materials according to the following components and weight: 20kg of alkali activator, 30kg of fly ash, 5kg of metakaolin, 10kg of ordinary Portland cement with a grade of 42.5, 60kg of quartz sand with a fineness modulus of 2.8, and 0.05 barium chloride kg, palm oil 0.03kg, hydroxyethyl methylcellulose ether 0.01kg, water 10kg.

[0045] Prepare the fly ash base polymer grout according to the following steps:

[0046] (1) use sodium hydroxide to adjust the modulus of modified water glass to be 1.2, and the concentration is 35%;

[0047] (2) Mix the adjusted modified water glass with other raw materials, stir for 4 minutes, let stand for 1.5 minutes, and then stir for 2.5 minutes to obtain the grout.

[0048] The performance test results of the grouting material prepared according to the above method are as follows:

[0049]

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Abstract

The invention discloses a fly ash based geopolymer grouting material including, by weight, 20-40 parts of an alkali activator, 30-50 parts of fly ash, 0-10 parts of metakaolin, 0-10 parts of cement, 60-90 parts of an aggregate, 0.05-0.1 parts of a retarder, 0.03-0.05 parts of a defoamer, 0.01-0.03 parts of a water-retention thickener, and 10-30 parts of water. The invention also provides a preparation method for the geopolymer grouting material. The preparation method is simple. The geopolymer grouting material has excellent flowability and workability, is micro-expansive, has high early-stage and later-stage strength, is free of water bleeding, is easy to construct and has good durability, can replace a conventional cement-based grouting material for fixing of foundation bolts and secondary grouting of equipment base or steel-structure column base floor, and effectively solves the problems of low flowability, short setting time, poor workability, low later-stage strength, high cost and shrinkage and cracking during usage of the grouting material. In the invention, industrial waste resources, such as the fly ash, are reasonably and effectively utilized to achieve environment protection and energy saving.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a fly ash base polymer grouting material and a preparation method thereof. Background technique [0002] Geopolymer grouting material is also called alkali-activated grouting material. It is a new type of green grouting material prepared at room temperature from industrial waste such as fly ash, metakaolin, and slag with industrial water glass as the activator. It has low energy consumption, The advantages of low pollution, energy saving and waste utilization are in line with the goals and requirements of sustainable development of my country's building materials industry. Although this type of material has excellent hydraulic properties, it is seldom used in practical engineering due to the disadvantage of fast setting. For example, when preparing high-strength concrete (>C80), the initial setting time of alkali-activated slag cement is usually about 10 minutes. The...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/70C04B111/10
CPCC04B28/04C04B2111/1062C04B2111/70C04B2201/50C04B12/005C04B14/068C04B24/38C04B24/42C04B24/10C04B14/06C04B24/06C04B24/08C04B22/124
Inventor 杨卓舒史红彬蔡世楷
Owner ZHUODA NEW MATERIALS TECH GRP WEIHAI CO LTD
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