Method for making cored building material block by using solidified soda residue soil

A technology of building materials and alkali slag, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of land occupation, incomplete realization of alkali slag soil reduction and harmlessness, and failure to realize resources issues such as utilization, to achieve the effect of reduction

Inactive Publication Date: 2013-09-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] No matter whether it is directly discharged into the bay or solidified and stored or landfilled, the reduction and harmlessness of the alkali residue have n...

Method used

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  • Method for making cored building material block by using solidified soda residue soil
  • Method for making cored building material block by using solidified soda residue soil
  • Method for making cored building material block by using solidified soda residue soil

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Adopt method provided by the invention to make floor tile, its plan view is as figure 2 Shown, the mass percent that its various raw material components occupy and production process are:

[0047] The mass percentages of various raw material components are as follows:

[0048] Wet alkali slag: 75%; plasticity index 28.6, moisture content 110%, void ratio 2.97.

[0049] Curing agent 5%: powdered sodium silicate: 4.5%, industrial caustic soda: 0.5%;

[0050] Ordinary Portland cement mortar: 20%; among them, ordinary Portland cement: 3%; sand: 17%.

[0051] Its production process is carried out according to the following steps:

[0052] The first step is to make the core material of solidified alkali dregs. Mix the curing agent and alkali slag evenly, put it into the mold A and fill it evenly, and demould after 3 days of normal curing (curing temperature 40°C, relative humidity 70%). The plane of the mold A is a regular hexagon with a side length of 22cm and a height...

Embodiment 3

[0071] Adopt method provided by the invention to make revetment brick, its plan view is as Figure 4 Shown, the mass percent that its various raw material components occupy and production process are:

[0072] The mass percentages of various raw material components are as follows:

[0073] Wet alkali slag: 74%; plasticity index 14.5, moisture content 49%, void ratio 2.03.

[0074] Curing agent: 13%; among them, fly ash 9%, ordinary portland cement 4%.

[0075] Fly ash Portland cement polymer concrete 13%; among them, fly ash Portland cement 3%, styrene: 0.5%; fine aggregate: 3%; coarse aggregate: 5.5%; water: 1%.

[0076] Its production process is carried out according to the following steps:

[0077] The first step is to make the solidified alkali residue soil core material. Mix the curing agent and alkali slag evenly, put it into the mold A and fill it evenly, and demould after 4 days of normal curing (curing temperature 40°C, relative humidity 95%). The plane of mold A...

Embodiment 4

[0083] Adopt the method provided by the invention to make the building block that is used for masonry pool, its front view is as follows Figure 5 Shown, the mass percent that its various raw material components occupy and production process are:

[0084] The mass percentages of various raw material components are as follows:

[0085] Wet alkali slag: 58%; plasticity index: 15.7, moisture content: 40%, void ratio 2.1.

[0086] Curing agent: 9%; among them, granulated blast furnace slag: 1%, metakaolin pozzolan materials: 4%, sodium silicate: 4%.

[0087] Slag Portland cement mortar 33%; Among them, slag Portland cement: 4.5%, sand: 27%; water: 1.5%.

[0088] Its production process is carried out according to the following steps:

[0089] The first step is to make the core material of solidified alkali dregs. Mix the curing agent and alkali slag evenly, put them into the molds A1 and A2 and fill them evenly, and then demould directly. The plane of the mold A1 is a rectangl...

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Abstract

The invention discloses a method for making a cored building material block by using solidified soda residue soil, belonging to the field of civil engineering. The cored building material block is prepared from a solidified soda residue soil core material, a mortar or concrete external coating material and an internal division wall through the steps of solidified soda residue soil core material making, mortar or concrete making, pressure forming, curing and the like. The solidified soda residue soil is a hardenite which has certain strength, is capable of fixing harmful substances in soda residue soil to reduce or eliminate the harmful substance leaching phenomenon along with water and is formed by uniformly blending a curing agent and soda residues (waste residues of waste liquid discharged in the process of producing soda by using an ammonia-soda process) and subjecting the curing agent and the soda residue soil to a physical-chemical reaction. Waste liquid and waste residues discharged in the industrial production process of soda are effectively utilized, and the reduction, harmlessness and reclamation of the soda residues are realized.

Description

technical field [0001] The invention belongs to the field of civil engineering, and specifically refers to a method for making a cored building material block by using solidified alkali slag. Background technique [0002] With the decreasing natural resources available to human beings, the reuse of solid waste has been listed as an important industrial policy in many countries, and a new industrial system is being formed. [0003] Alkali residue is the waste residue of the waste liquid discharged during the production of soda ash by the ammonia-soda method. At present, there are two main ways to deal with waste liquid and residue: one is to let the waste directly flow into the bay, and unrestricted mixed discharge will cause different degrees of pollution and silting in sea areas and rivers, and the aquaculture industry will be seriously damaged; The sediment is discharged into the slag field, which occupies a large amount of land or sea area, resulting in a "white sea" by ...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B28/08C04B28/04C04B28/00C04B18/04
CPCY02W30/91
Inventor 林傲然于浩黄新
Owner BEIHANG UNIV
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