Geopolymer grouting material

A technology of grouting materials and geopolymers, which is applied in the field of geopolymer grouting materials, can solve the problems of inability to react with soil, low early strength, and high production costs, so as to improve road bearing capacity, high early strength, and improve bearing capacity Effect

Inactive Publication Date: 2010-05-26
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
View PDF0 Cites 43 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to insufficient bearing capacity of soil subgrade in my country's road engineering, road damage occurs from time to time. The reinforcement measures adopted are ideally the grouting process, but most of the grouting materials currently used have certain limitations: such as low early strength, The fluidity is poor, it cannot react with the soil, etc., and the grouting materials are mostly prepared from relatively high-priced cement, etc., and the production cost is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Use 20kg of waste concrete powder, 10kg of desulfurized gypsum, 15kg of steel slag powder, 35kg of slag powder, 8kg of high-calcium fly ash, 35kg of fly ash, and 8kg of sodium silicate. Material.

[0017] The geopolymer grouting material prepared above and water are mixed evenly with a weight ratio of 1: 0.8, fluidity (the so-called fluidity has a corresponding concept in the grouting material standard) for 18 seconds, and after 28d ("d" here is " The strength after "days") can reach 4.8MPa, and the bleeding rate is less than 0.1%.

Embodiment 2

[0019] Use 25kg of waste concrete powder, 10kg of desulfurized gypsum, 10kg of steel slag powder, 30kg of slag powder, 6kg of high-calcium fly ash, 40kg of fly ash, and 7kg of sodium silicate, and fully stir and mix the above components to make a geopolymer. Grouting material.

[0020] The geopolymer grouting material prepared above is mixed evenly with water at a weight ratio of 1:0.8, the fluidity is 22 seconds, the strength can reach 3.8 MPa after 28 days, and the bleeding rate is less than 0.2%.

Embodiment 3

[0022] Using 30kg of waste concrete powder, 15kg of desulfurized gypsum, 15kg of steel slag powder, 25kg of slag powder, 5kg of high-calcium fly ash, 30kg of fly ash, and 7kg of potassium silicate, the above components are fully stirred and mixed to make a geopolymer. Grouting material.

[0023] The above-mentioned geopolymer grouting material and water are mixed evenly at a weight ratio of 1:0.8, the fluidity is 16 seconds, the strength can reach 3.5 MPa after 28 days, and the bleeding rate is less than 0.25%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a geopolymer grouting material, which is prepared from the following components in parts by weight: 10-30 parts of waste concrete powder, 5-15 parts of desulfurization gypsum, 10-20 parts of steel slag powder, 20-40 parts of scoria powder, 3-8 parts of high calcium fly ash, 20-50parts of coal ash and 5-10 parts of alkali-activator. The geopolymer grouting material has the advantages of high early strength, good flowing property, low production cost, and the like; moreover, the geopolymer grouting material has self-hardening property, can react with soil, and enable soil bodies to become a plate-shaped structure, thereby improving the bearing capacity of a soil roadbed.

Description

technical field [0001] The invention belongs to the field of foundation reinforcement, and in particular relates to a geopolymer grouting material. Background technique [0002] Due to insufficient bearing capacity of soil subgrade in my country's road engineering, road damage occurs from time to time. The reinforcement measures adopted are ideally the grouting process, but most of the grouting materials currently used have certain limitations: such as low early strength, The fluidity is poor, it cannot react with the soil, etc., and the grouting materials are mostly prepared from relatively high-priced cement, etc., and the production cost is high. Contents of the invention [0003] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides a ground with high early strength, good fluidity, which can react with the soil, thereby effectively improving the bearing capacity of the roadbed, and fully utilizing solid waste as raw materials to red...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B18/16C04B18/14C04B18/08
CPCC04B28/008C04B2111/70C04B2103/10C04B2103/34C04B2103/0007Y02P40/10Y02W30/91C04B18/08C04B18/141C04B18/142C04B18/16C04B22/145C04B12/04
Inventor 孙家瑛胡仁伟施盛泉吴斌
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap