Method for producing modified mechanism sand and special admixture for dry-mixed mortar

A dry-mixed mortar and machine-made sand technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of poor operability of mortar construction, many soil impurities in sand, and large amount of admixtures, etc., to achieve Improve the efficiency of laying and plastering, reduce ground ash, and save cement and lime paste

Active Publication Date: 2013-01-02
HUNAN ZHENXING BUILDING MATERIALS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The use of general machine-made sand to produce dry-mixed mortar has disadvantages such as poor workability, serious mortar bleeding, large amount of admixtures, and many soil impurities in the sand, resulting in poor construction operability, high cost, and low strength of the mortar produced with machine-made sand.

Method used

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  • Method for producing modified mechanism sand and special admixture for dry-mixed mortar

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0011] Limestone chips are continuously put into the powder separator, which is a combination of vibrating screen, frequency conversion fan, cyclone separator and bag filter. The limestone chips processed in the powder classifier are continuously discharged to obtain mud powder, stone powder, coarse gravel, and machine-made sand (products). The obtained mud powder is sent to backfill the land, and the stone powder is continuously sent to the modified mill. The sex mill is a blade hammer mill, and the modified stone powder is continuously obtained through the modified mill, which is sent to the storage tank for storage.

[0012] Get 1000 kilograms of modified stone powder and put it into the mixer, then add 10 kilograms of thickening agent (lignocellulose, produced by Changsha Defeng Building Materials Co., Ltd.), dispersant (trade name NNO diffusing agent, Hengyuan Chemical Co., Ltd., Taixing City, Jiangsu Province) Factory production) 3 kg, water reducer (polycarboxylate, pro...

example 2

[0014] Put 1 ton of modified stone powder into the mixer, then add 15 kg of thickener (lignocellulose), 5 kg of dispersant (NNO diffusing agent), and 2 kg of water reducer (polycarboxylate) into the mixer. Stir for 5 minutes to obtain the special admixture (product) for dry-mixed mortar, and all the other are the same as Example 1.

example 3

[0016] Take 1 ton of modified stone powder and put it into the mixer, then add 30 kg of thickener (lignocellulose), 7 kg of dispersant (NNO diffusing agent), and 3 kg of water reducing agent (polycarboxylate) into the mixing machine. machine, stirred for 5 minutes to obtain the special admixture (product) for dry-mixed mortar, and all the other were with example 1.

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PUM

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Abstract

The invention discloses and aims at providing a method for producing modified mechanism sand and special admixture for dry-mixed mortar. Lime stone chips are utilized as raw materials in the method and the method is characterized by including the steps as follows: A, powder selection, putting the lime stone chips in a powder selecting machine, separating mechanism sand, soil powder, stone powder and coarse stone ballast; B, modification of stone powder, putting the stone powder obtained from the step A into a modification mill for treatment to obtain modified stone powder; C, mixing, putting the modified stone powder obtained from the step B into a mixer and adding a thickening agent , a dispersing agent and a water reducing agent to obtain the special admixture for the dry-mixed mortar; and D, sand making, putting the coarse stone ballast obtained from the step A into a sand making machine for treatment to obtain fine stone ballast, mechanism sand and stone powder, wherein the stone powder returns to the modification mill and the fine stone ballast returns to the sand making machine. The method is mainly used for producing the modified mechanism sand and the special admixture forthe dry-mixed mortar.

Description

technical field [0001] The invention relates to a method for producing modified machine-made sand and a special admixture, in particular to a method for producing a modified machine-made sand and a special admixture for dry-mixed mortar. Background technique [0002] The use of general machine-made sand to produce dry-mixed mortar has disadvantages such as poor workability, serious mortar bleeding, large amount of admixtures, and many soil impurities in the sand, resulting in poor construction operability, high cost, and low strength of the mortar produced with machine-made sand. Contents of the invention [0003] The object of the present invention is to provide a method for producing modified machine-made sand and special additives for dry-mixed mortar, so as to overcome the above-mentioned shortcomings. [0004] In order to achieve the above object, the technical solution of the present invention is: a method for producing modified machine-made sand and special additive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/12C04B24/26
CPCY02W30/91
Inventor 鲁辉王淑英
Owner HUNAN ZHENXING BUILDING MATERIALS TECH
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