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Calcium-enriched alta-mud for railway and high road foundation treatment

A technology of calcium bentonite and bentonite, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve the effects of increasing elasticity, preventing roadbed settlement, and increasing hardness

Inactive Publication Date: 2007-09-26
天津市乐金建材制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiency of above-mentioned technology, and provide a kind of calcium-increased bentonite that is used for railway and highway subgrade treatment, is to be main raw material with chemical waste---saponification slag and fly ash, can be widely used in railway, Highway subgrade treatment can also alleviate the pollution problems and harms of chemical wastes - saponification slag and fly ash

Method used

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  • Calcium-enriched alta-mud for railway and high road foundation treatment

Examples

Experimental program
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Effect test

Embodiment 1

[0013] A kind of calcium-increased bentonite used for the treatment of railway and highway subgrades, in terms of volume percentage m 3 The components are: saponified slag: bentonite: fly ash=1: 0.1: 0.1.

Embodiment 2

[0015] A kind of calcium-increasing bentonite used for railway and highway subgrade treatment, the composition according to its volume percentage m3 is: saponified slag: bentonite: fly ash=1: 0.1: 0.6.

Embodiment 3

[0017] A kind of calcium-increased bentonite used for the treatment of railway and highway subgrades, in terms of volume percentage m 3 The components are: saponified slag: bentonite: fly ash = 1:0.1:0.3

[0018] The preparation method of calcium-increasing bentonite:

[0019] 1. Feeding

[0020] Including drying, stirring, and transporting the saponification slag to the raw material yard. Take 750 cubic meters of saponification slag and put it into the drying yard, pile it up according to the ratio of length, width and height of 30:25:1, and stir it with a bamboo rake to accelerate the dehydration. After drying in the sun until the water content in the saponification slag is lower than 30%, put it into a stirring tank and stir until the particle diameter of the raw material block is less than 2 cm. Unqualified return to the drying link.

[0021] 2. Neutralization, washing and draining

[0022] It includes four steps of adding sulfuric acid, washing with water, draining, ...

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Abstract

The invention discloses an increasing calcium alta-mud used to dispose railway and road roadbed, which comprises the following steps: allocating ingredient of meter 3 through percentage by volume at saponifying slag : alta-mud : coal ash=1:0.1:0.1-0.6; airing saponifying slag; stirring; adding into sulfuric acid; adding into water; draining; airing; adding alta-mud and coal ash; stirring; airing; examining; packing.

Description

technical field [0001] The invention belongs to chemical building materials, in particular to a calcium-increased bentonite used for treating railway and highway subgrades. Background technique [0002] With the rapid economic growth in the Bohai Bay area, the demand for infrastructure construction such as railways and highways is also increasing. These infrastructure constructions must first solve the difficult problems of increasing load strength and preventing ground subsidence on weak foundations. Subgrade settlement of railways and highways is mainly caused by factors such as subgrade water loss, insufficient compactness and uneven force. Therefore, it is required that the building materials of railway and highway foundations should have water absorption to form water retention; they should have expansion force to generate tension force; they should have cementation to generate binding force and increase load strength. Tianjin Dagu Chemical Co., Ltd. is an important c...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/12C04B18/08C04B18/04
CPCC04B28/001C04B40/0039C04B2111/0075C04B2111/00732Y02W30/91C04B18/067C04B18/08C04B14/104
Inventor 谈遒
Owner 天津市乐金建材制品有限公司
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