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A method of using waste oyster shells to prepare ground glass powder construction mortar

A technology of waste glass and oyster shells, which is applied in the field of high-performance building materials preparation, can solve the problems of large alkali silicic acid reaction expansion, poor mortar volume stability, and environmental pollution, etc., and achieve low alkali silicic acid reaction expansion, volume Good stability and material cost savings

Active Publication Date: 2020-04-21
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved: In order to solve the problem that the proportion of cement replaced by ground waste glass powder is too low in the prior art, the alkali silicic acid reaction expansion of the hardened mortar after adding excessively ground waste glass powder will cause the volume stability of the mortar to deteriorate problem
This application proposes a method of using discarded oyster shells to prepare high-volume ground glass powder building mortar. Using this method to prepare building mortar greatly increases the amount of ground waste glass powder used in building mortar and reduces the amount of ground glass powder used in building mortar. Cement consumption, and reduce the CO in the cement production process 2 The impact of greenhouse gas emissions and industrial dust emissions on the environment has also solved the problem of waste glass occupying a large amount of land and polluting the surrounding environment
Overcome the technical problems of poor volume stability and durability of traditional ground glass powder building mortar

Method used

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  • A method of using waste oyster shells to prepare ground glass powder construction mortar
  • A method of using waste oyster shells to prepare ground glass powder construction mortar
  • A method of using waste oyster shells to prepare ground glass powder construction mortar

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 Shown, a kind of method using discarded oyster shells to prepare ground glass powder building mortar, comprises the steps:

[0035]The first step is the preparation of finely ground glass powder: sort, wash, dry, and pulverize the waste white glass beverage bottles and pass them through a 5mm square hole sieve to remove impurities and irregularly shaped waste glass particles; Put the glass particles into a vibrating ball mill with a volume of 80ml and grind them at a speed of 800 rpm for 2 minutes, then place the ground waste glass powder in a sealed place for 48 hours, and the average particle size of the ground waste glass powder measured by the laser particle size analyzer is 4.426um;

[0036] The second step is the treatment of discarded oyster shells: the discarded oyster shells from the southeastern coastal areas of China are sorted, cleaned, dried, and then crushed. The crushed discarded oyster shells are passed through a 0.6mm round hole sieve t...

Embodiment 2

[0044] Such as figure 1 Shown, a kind of method using discarded oyster shells to prepare ground glass powder building mortar, comprises the steps:

[0045] The first step is the preparation of finely ground glass powder: sort, wash, dry, and pulverize the waste white glass beverage bottles and pass them through a 5mm square hole sieve to remove impurities and irregularly shaped waste glass particles; Put the glass particles into a vibrating ball mill with a volume of 80ml and grind them at a speed of 800 rpm for 1 minute, then place the ground waste glass powder in a sealed place for 48 hours, and the average particle size of the ground glass powder measured by the laser particle size analyzer is 4.426um;

[0046] The second step is the treatment of discarded oyster shells: the discarded oyster shells from the southeastern coastal areas of China are sorted, cleaned, dried, and then crushed. The crushed discarded oyster shells are passed through a 0.6mm round hole sieve to remo...

Embodiment 3

[0051] Such as figure 1 Shown, a kind of method using discarded oyster shells to prepare ground glass powder building mortar, comprises the steps:

[0052] The first step is the preparation of finely ground glass powder: sort, wash, dry, and pulverize the waste white glass beverage bottles and pass them through a 5mm square hole sieve to remove impurities and irregularly shaped waste glass particles; Put the glass particles into a vibrating ball mill with a volume of 80ml and grind at a speed of 800 rpm for 1-2 minutes, then place the ground waste glass powder in a sealed place for 48 hours, and the average particle size of the ground waste glass powder measured by the laser particle size analyzer is 4.426um ;

[0053] The second step is the treatment of discarded oyster shells: the discarded oyster shells from the southeastern coastal areas of China are sorted, cleaned, dried, and then crushed. The crushed discarded oyster shells are passed through a 0.6mm round hole sieve t...

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Abstract

The invention discloses a method for preparing abrasive glass dust building mortar from waste oyster shells. The method includes the steps of soaking the waste oyster shells in an acid solution, and conducting heat treatment on the waste oyster shells to prepare the abrasive glass dust building mortar. Calcium sulfate generated after chemical treatment of the waste oyster shells accelerates the mortar hydration rate; chemically-treated porous oyster shells are doped in the mortar, so the alkali silicate reaction expansion is reduced. When the abrasive glass dust building mortar is prepared bymeans of the method, the proportion of cement replaced by waste abrasive glass dust is increased, the negative influences of the cement production process to the environment are reduced, and the problems that waste glass greatly occupies land and causes pollution to the surrounding environment are avoided. The abrasive glass dust building mortar prepared through the method has better mechanical performance and durability, lower alkali silicate reaction expansion and good size stability.

Description

technical field [0001] The invention belongs to the fields of solid waste recycling and high-performance building material preparation, and in particular relates to a method for preparing ground glass powder building mortar by using discarded oyster shells. Background technique [0002] Since the beginning of the 20th century, with the acceleration of my country's urbanization process and the implementation of national strategies such as the "Belt and Road" and the "Maritime Silk Road", a large number of civil projects such as civil buildings, highways, bridges, tunnels, wharves, and drilling platforms have started The use of construction, civil engineering materials continues to increase. As an important part of civil engineering materials, high-performance building mortar has a wide range of raw materials, strong bearing capacity, good shear resistance, high bonding strength, hardened building mortar is not easy to deform and crack, and is convenient for construction. It h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00
Inventor 陈达廖迎娣袁梦封嘉蕊刘睿文赵晖
Owner HOHAI UNIV
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