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Geopolymer grouting material applicable to using in cold region

A technology of geopolymers and cold regions, applied in the field of geopolymer grouting materials, can solve the problems of high production cost, poor antifreeze effect, poor fluidity, etc., and achieve the effect of high early strength, fast setting and hardening, and good fluidity

Active Publication Date: 2014-03-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high production cost, poor fluidity, poor strength and poor antifreeze effect in the existing grouting materials, and provide a geopolymer grouting material suitable for use in cold regions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0012] Embodiment 1: This embodiment is suitable for geopolymer grouting materials used in cold regions, and consists of solid particles and activators; the solid particles are composed of 5 to 50 parts by weight of fly ash, 5 to 50 parts slag, 0-3 parts of calcium hydroxide and 20-80 parts of fine aggregate; the activator accounts for 14%-35% of the total weight of solid particles; the specific surface area of ​​the slag is greater than 250m 2 / kg; the fine aggregate is medium sand with a fineness modulus of 2.3-3.0; the activator is water glass with a modulus of 0.8-3.0.

[0013] In this embodiment, the modulus of the water glass is 0.8-3.0, and the purpose is to ensure the fluidity of the grouting material and improve the excitation effect of the alkaline activator.

[0014] The use of the geopolymer grouting material suitable for use in cold regions in this embodiment: mix the solid particles evenly, add the activator and stir evenly, and form a slurry after 5 minutes for ...

specific Embodiment approach 2

[0015] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the solid particles are composed of 15 parts of fly ash, 24 parts of slag, 1 part of calcium hydroxide and 60 parts of fine aggregate by weight . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0016] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the solid particles are composed of 20 parts of fly ash, 8 parts of slag, 2 parts of calcium hydroxide and 70 parts of fine aggregate by weight . Others are the same as in the first embodiment.

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Abstract

The invention discloses a geopolymer grouting material applicable to using in a cold region, relates to geopolymer grouting materials, and is used for solving the problems that the existing grouting material is high in production cost, poor in liquidity, poor in strength and poor in anti-freezing effect. The geopolymer grouting material consists of solid particles and an excitant, wherein the solid particles consist of coal ash, mineral slag and fine aggregate; the excitant is sodium silicate with modulus of 0.8-3.0. The geopolymer grouting material disclosed by the invention adopts the coal ash and the mineral slag industrial wastes as gelling materials, is wide in source and low in cost; flow performance is good, so that bleeding and separation are not generated; a mixture is good in cohesiveness, quick in setting and hardening and high in early strength; besides, the geopolymer grouting material has good filling performance, good anti-freezing performance and an anti-freezing level of F300, is suitable for being used in a cold temperature changing environment, and is simple and quick to construct.

Description

technical field [0001] The invention belongs to the technical field of building materials and civil engineering, and in particular relates to a geopolymer grouting material suitable for use in cold regions. Background technique [0002] At present, various grouting materials have been developed at home and abroad. According to the different types of materials, grouting materials are divided into two categories: chemical grouting materials and solid grouting materials. Chemical grouting material is mucus composed of chemical reagents. Although chemical grouting material has good fluidity and is suitable for pouring into relatively small gaps, the construction operation of chemical grouting material is complicated, it is not easy to stir evenly, and it solidifies at low temperature It is not easy to use in winter, its structure has poor durability, and it is expensive. Solid grouting materials are composed of solid particles and water. Different from chemical grouting materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B18/30
CPCY02P40/10Y02W30/91
Inventor 李学英焦贞贞于清林张守杰
Owner HARBIN INST OF TECH
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