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Ready-mixed mortar and preparation method thereof

A technology for ready-mixed mortar and fine sand, applied in the field of ready-mixed mortar, can solve problems such as poor durability and poor waterproof performance, and achieve the effects of solving drying shrinkage, low cost and improving durability

Active Publication Date: 2014-07-23
江苏建华新型墙材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: In order to solve the defects of existing ready-mixed mortar itself drying shrinkage, poor waterproof performance, and poor durability, the present invention provides a new ready-mixed mortar and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Ready-mixed mortar, including the following components in weight percentage: Portland cement 35%, medium-fine sand with a fineness modulus of 1.6-2.3 60%, cellulose ether polymer 0.3%, engineering fiber 2%, Expanding agent 1.7%, water reducer 1.0%.

[0024] in,

[0025] The cellulose ether polymer is methyl cellulose ether;

[0026] The engineering fiber is polypropylene fiber;

[0027] The expansion agent is an alunite expansion agent;

[0028] The water reducer is a naphthalene powder water reducer.

[0029] The preparation method is as follows:

[0030] 1) Dry the medium-fine sand until the moisture content is below 0.5%, and screen out particles larger than 4.75mm to obtain medium-fine sand with a fineness modulus of 1.6-2.3;

[0031] 2) adding cellulose ether polymer, engineering fiber, expansion agent and water reducer to cement, and stirring evenly to obtain an additive cement mixture;

[0032] 3) Stir the sieved medium-fine sand and additive cement mixture...

Embodiment 2

[0034] Ready-mixed mortar, including the following components in weight percentage: 30% of ordinary Portland cement, 65.7% of medium-fine sand with a fineness modulus of 1.6-2.3, 0.1% of cellulose ether polymer, and 0.1% of engineering fiber , expansion agent 4%, water reducing agent 0.1%.

[0035] in,

[0036] The cellulose ether polymer is hydroxypropyl methylcellulose ether;

[0037] The engineering fiber is glass fiber;

[0038] The expansion agent is a mixture of UEA expansion agent, calcium oxide expansion agent, iron filings expansion agent and alum expansion agent;

[0039] The water reducer is polycarboxylate powder water reducer.

[0040] The preparation method is as follows:

[0041] 1) Dry the medium-fine sand until the moisture content is below 0.5%, and screen out particles larger than 4.75mm to obtain medium-fine sand with a fineness modulus of 1.6-2.3;

[0042] 2) adding cellulose ether polymer, engineering fiber, expansion agent and water reducer to cemen...

Embodiment 3

[0045] Ready-mixed mortar, including the following components in weight percentage: 27.7% of slag Portland cement, 70% of medium-fine sand with a fineness modulus of 1.6-2.3, 0.2% of cellulose ether polymer, and 1.0% of engineering fiber , expansion agent 0.1%, water reducing agent 1.0%.

[0046] in,

[0047] The cellulose ether polymer is a mixture of methyl cellulose ether and hydroxypropyl methyl cellulose ether;

[0048] Engineering fiber is a mixture of polypropylene fiber and glass fiber;

[0049] The expansion agent is an iron filings expansion agent;

[0050] The water reducer is an aliphatic powder water reducer.

[0051] The preparation method is as follows:

[0052] 1) Dry the medium-fine sand until the moisture content is below 0.5%, and screen out particles larger than 4.75mm to obtain medium-fine sand with a fineness modulus of 1.6-2.3;

[0053] 2) adding cellulose ether polymer, engineering fiber, expansion agent and water reducer to cement, and stirring ev...

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PUM

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Abstract

The invention provides ready-mixed mortar, comprising the following ingredients: 20-35 wt% of cement, 60-79 wt% of medium and fine sand, 0.05-0.3 wt% of cellulose ether high polymer, 0.1-2.0 wt% of engineering fiber, 0.1-4.0 wt% of expansive agent and 0.1-1.0 wt% of water reducer. The invention also provides a preparation method of the ready-mixed mortar. According to the invention, the problem of dry contraction of existing mortar, thus the tight connection between the mortar and concrete members is guaranteed, the waterproof and anti-permeability performance of the mortar are raised, the durability of the ready-mixed mortar is raised, and the cost is low. The preparation method of the ready-mixed mortar has the advantages of simpleness and low cost.

Description

technical field [0001] The invention relates to a ready-mixed mortar, and also relates to a preparation method of the ready-mixed mortar. Background technique [0002] Ready-mixed mortar refers to various mortar mixtures produced by specialized manufacturers and used in construction projects. It is a new type of building material developed in my country in recent years. It can be divided into ordinary ready-mixed mortar and special mortar according to its performance. Ordinary mortar mainly includes masonry mortar, plastering mortar and ground mortar. Masonry mortar and plastering mortar are mainly used for masonry and plastering of various concrete bricks, fly ash bricks and clay bricks in load-bearing walls and non-load-bearing walls. Ground mortar is used for ground leveling in ordinary and special occasions. Special mortar includes thermal insulation mortar, decorative mortar, self-leveling mortar, waterproof mortar, etc. It has various uses and is widely used in buildi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B28/08
Inventor 俞海军
Owner 江苏建华新型墙材有限公司
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