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Method for preparing mortar

A mortar and cement technology, applied in the field of building material manufacturing, can solve problems such as damage, accelerated steel corrosion, and failure to reach the designed service life

Active Publication Date: 2014-04-30
南京易发新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the project, the basements, roofs, roads and bridges of many buildings did not reach the designed service life, and some projects were seriously damaged after only a few years of use and had to be repaired. The main reason is that the current waterproof materials and cement plus The agent generally contains Cl-,,,,, and K+ ions are too heavy, and when added to the cement, it reacts with the active silica in the concrete to form an alkali silicate gel and cause the concrete to expand and crack. This is a common problem in engineering. Alkali-aggregate reaction, while accelerating the corrosion of steel bars, resulting in cracking and water seepage of building materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for mortar, characterized in that:

[0026] Weigh 282g of raw cement, 18g of cement composite additives, 750g of sand, 4g of polypropylene fiber, and 3g of naphthalene-based water reducer; put the above raw materials into a conical double-helix mixer according to the proportion and mix them evenly. The mixing time is 50 minutes. After getting the mortar;

[0027] The preparation method steps of the cement composite additive are:

[0028] Step (1): According to 30 parts of alumina clinker, 5 parts of calcined alunite, 1 part of zinc sulfate, 10 parts of dickite, 10 parts of attapulgite clay, 10 parts of fly ash, 1 part of zeolite powder, and diatomite 2 parts, 2 parts of bentonite, 1 part of methyl cellulose, 0.5 part of sodium sulfite, 0.5 part of quicklime, 0.2 part of calcium fluoride to prepare raw materials,

[0029] Step (2): 30 parts of alumina clinker, 5 parts of calcined alunite, 1 part of zinc sulfate, and 10 parts of dickite are ground i...

Embodiment 2

[0034] A preparation method for mortar, characterized in that:

[0035] Weigh 282g of raw cement, 18g of cement composite additives, 750g of sand, 4g of polypropylene fiber, and 3g of naphthalene-based water reducer; put the above raw materials into a conical double-helix mixer according to the proportion and mix them evenly. The mixing time is 50 minutes. After getting the mortar;

[0036] The preparation method steps of the cement composite additive are:

[0037] Step (1): According to 35 parts of alumina clinker, 10 parts of calcined alunite, 5 parts of zinc sulfate, 20 parts of dickite, 20 parts of attapulgite clay, 15 parts of fly ash, 5 parts of zeolite powder, diatomaceous earth 4 parts, 5 parts of bentonite, 2 parts of methyl cellulose, 1 part of sodium sulfite, 1 part of quicklime, 0.5 part of calcium fluoride to prepare raw materials,

[0038] Step (2): 35 parts of alumina clinker, 10 parts of calcined alunite, 5 parts of zinc sulfate, and 20 parts of dickite are g...

Embodiment 3

[0043] A preparation method for mortar, characterized in that:

[0044]Weigh 282g of raw cement, 18g of cement composite additives, 750g of sand, 4g of polypropylene fiber, and 3g of naphthalene-based water reducer; put the above raw materials into a conical double-helix mixer according to the proportion and mix them evenly. The mixing time is 50 minutes. After getting the mortar;

[0045] The preparation method steps of the cement composite additive are:

[0046] Step (1): According to 32 parts of alumina clinker, 7 parts of calcined alunite, 3 parts of zinc sulfate, 13 parts of dickite, 13 parts of attapulgite clay, 13 parts of fly ash, 3 parts of zeolite powder, diatomaceous earth 3 parts, 3 parts of bentonite, 1 part of methyl cellulose, 0.6 part of sodium sulfite, 0.6 part of quicklime, 0.3 part of calcium fluoride to prepare raw materials,

[0047] Step (2): 32 parts of alumina clinker, 7 parts of calcined alunite, 3 parts of zinc sulfate, and 13 parts of dickite are g...

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Abstract

The invention discloses a method for preparing mortar. The method is characterized by comprising the following steps: weighing raw materials including 282 g of cement, 18 g of a cement composite additive, 750 g of sand, 4 g of polypropylene fiber and 3 g of a naphthalene water reducer; according to the ratio, putting the above raw materials into a conical double-helix stirrer for uniformly stirring for 50 minutes to obtain the mortar. The mortar has the functions of efficiently preventing water and damp, preventing swelling, resisting cracking and permeating and the like and does not has a corrosive effect on steel bars.

Description

technical field [0001] The invention relates to a method for preparing mortar and belongs to the field of building material manufacturing. Background technique [0002] During the project, the basements, roofs, roads and bridges of many buildings did not reach the designed service life, and some projects were seriously damaged after only a few years of use and had to be repaired. The main reason is that the current waterproof materials and cement plus The agent generally contains Cl-,,,,, and K+ ions are too heavy, and when added to the cement, it reacts with the active silica in the concrete to form an alkali silicate gel and cause the concrete to expand and crack. This is a common problem in engineering. Alkali-aggregate reaction also accelerates the corrosion of steel bars, resulting in cracking and water seepage of building materials. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B24/38C04B22/14
Inventor 黄小仙
Owner 南京易发新材料科技有限公司
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