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Manufacturing methods of geopolymer and precursor thereof, product and application

A technology of geopolymer and production method, which is applied in cement production, foundation structure engineering, sheet pile wall, etc., and achieves the effects of low cost, wide application value and simple preparation process

Active Publication Date: 2016-04-13
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is of great significance to explore the use of geopolymer instead of cement in the mixing pile to develop a new type of geopolymer mixing pile for practical engineering. However, there is no research on geopolymer piles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0045] Example 1: Application of Geopolymer Mixed Piles in Lower Grade Road Works

[0046]Geopolymer mixing piles can be used in road engineering to strengthen weak foundations and prevent large settlement deformation of the road surface under traffic loads. In the low-grade road, the traffic load and flow are small, and the settlement deformation of the road surface is relatively low. In order to prepare geopolymer mixing piles suitable for road construction, the Bayer process red mud produced by Shandong Aluminum Plant and the coal gangue produced by Shandong Yankuang Mine were selected. The ratio of coal gangue and Bayer process red mud was 3:1, fully ground and sieved. , obtain particles with a size less than 0.15mm, then add sodium hydroxide according to the ratio of sodium hydroxide to coal gangue mass ratio of 1:9 and mix evenly, calcined at a high temperature of 700 ° C for one hour, after natural cooling, over 0.15 mm sieve, bagged for use.

[0047] When making geop...

example 2

[0048] Example 2: Application of geopolymer stirring pile in high-grade road engineering

[0049] Geopolymer mixing piles can be used in road engineering to strengthen weak foundations and prevent large settlement deformation of the road surface under traffic loads. In high-grade roads, such as expressways, the traffic load and flow are large, and the requirements for the settlement and deformation of the road surface are extremely high. In order to prepare geopolymer mixing piles suitable for road construction, the Bayer process red mud produced by Shandong Aluminum Plant and the coal gangue produced by Shandong Yankuang Mine were selected. The ratio of coal gangue and Bayer process red mud was 5:1, fully ground and sieved. , obtain particles with a size less than 0.15mm, then add sodium hydroxide in a ratio of 1:5 mass ratio of sodium hydroxide to coal gangue and mix evenly, calcinate at a high temperature of 700 ° C for one hour, and naturally cool after 0.15 The sieve of ...

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Abstract

The invention relates to manufacturing methods of a geopolymer and a precursor thereof, a product and application. The manufacturing method of the geopolymer precursor comprises the following steps: smashing a mixture of coal gangue and red mud to obtain mixture particles, wherein the mass ratio of the coal gangue to the red mud is not less than 3 to 1; putting the mixture particles and sodium hydroxide together under a high temperature of 600-900 DEG C, calcining for a set time, cooling, and then sieving to obtain the geopolymer precursor, wherein the mass ratio of the mixture particles to the sodium hydroxide is (1:9)-(1:5). The geopolymer is simple in preparation process, can be produced largely, and has wide application value. The geopolymer is applied to a stirring pile, is low in cost, energy-saving and environment-friendly, and has higher intensity and better chemical corrosion resistance.

Description

technical field [0001] The invention provides a preparation method, product and application of a geopolymer and a precursor thereof, belonging to the field of civil engineering. Background technique [0002] Cement-soil mixing pile is one of the most common methods for strengthening the weak foundation problems encountered in engineering construction. However, the cement industry is an industry with high material consumption, high energy consumption and high pollution. For every ton of cement produced, 1 ton of limestone is consumed, and about 1 ton of CO2 is produced at the same time. 2 . Limestone reserves in our country are limited, and it is a non-renewable resource. Today, when energy conservation, environmental protection and sustainable development are vigorously advocated, the large-scale application of cement-soil mixing piles with cement as the basic raw material will undoubtedly cause great damage to the environment and resources we rely on for survival. . Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/24C04B28/00E02D5/46
CPCC04B7/243C04B12/005C04B28/006E02D5/46E02D2300/002C04B14/10Y02P40/10
Inventor 崔新壮侯飞金青黄丹刘泽群张炯崔社强郑英杰李莉汤维泽楼俊杰
Owner SHANDONG UNIV