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Delayed coagulation ready-mixed mortar and preparation method thereof

A ready-mixed mortar and retarded setting technology is applied in the field of retarded ready-mixed mortar and its preparation, which can solve the problems of complicated construction operation and short setting time of ready-mixed mortar, so as to simplify construction operation, prevent hidden dangers of quality and safety, and improve durability. sexual effect

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

[0005] Technical problem to be solved: In order to solve the defects of short setting time and complicated construction operation of the existing ready-mixed mortar, the present invention provides a retarded ready-mixed mortar and its preparation method

Method used

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  • Delayed coagulation ready-mixed mortar and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0024] 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 2.0%, 1.2% expansion agent, 1.0% water reducer, 0.5% retarder;

[0025] in,

[0026] The cellulose ether polymer is methyl cellulose ether;

[0027] The engineering fiber is polypropylene fiber;

[0028] The expansion agent is an alunite expansion agent;

[0029] The water reducer is a naphthalene powder water reducer;

[0030] The retarder is sodium gluconate.

[0031] The preparation method is as follows:

[0032] 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;

[0033] 2) Add cellulose ether polymer, engineering fiber, expansion agent, water reducer and retarder to cement, and stir evenly to obtain additive cement mixture;

[0034] 3)...

Embodiment 2

[0036] Ready-mixed mortar, including the following components in weight percentage: 30% of ordinary Portland cement, 64.7% 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 4.0%, water reducer 0.1%, retarder 1.0%.

[0037] in,

[0038] The cellulose ether polymer is hydroxypropyl methylcellulose ether;

[0039] The engineering fiber is glass fiber;

[0040] The expansion agent is a mixture of UEA expansion agent, calcium oxide expansion agent, iron filings expansion agent and alum expansion agent;

[0041] The water reducer is polycarboxylate powder water reducer;

[0042] The retarder is sodium lignosulfonate.

[0043] The preparation method is as follows:

[0044] 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;

[0045] 2) Add cellulose ether polymer, engin...

Embodiment 3

[0048] Ready-mixed mortar, including the following components in weight percentage: 27.6% 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 reducer 1.0%, retarder 0.1%.

[0049] in,

[0050] The cellulose ether polymer is a mixture of methyl cellulose ether and hydroxypropyl methyl cellulose ether;

[0051] Engineering fiber is a mixture of polypropylene fiber and glass fiber;

[0052] The expansion agent is an iron filings expansion agent;

[0053] The water reducer is an aliphatic powder water reducer;

[0054] The retarder is sugar, and the sugar is one or a mixture of glucose, sucrose, maltose and citric acid residue.

[0055] The preparation method is as follows:

[0056] 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-...

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Abstract

The invention discloses delayed coagulation ready-mixed mortar. The delayed coagulation ready-mixed mortar comprises the following components in percentage by weight: 20-35% of cement, 60-79% of medium-fine sand, 0.05-0.3% of cellulose ether high molecular polymer, 0.1-2.0% of technical fiber, 0.1-4.0% of expanding agent, 0.1-1.0% of water reducing agent and 0.1-1.0% of retarding agent. The delayed coagulation ready-mixed mortar provided by the invention has the advantages that the coagulation time of the ready-mixed mortar can be effectively prolonged, simultaneously the hardening of the mortar can be delayed, the potential safety hazard of quality caused by secondary water addition is prevented, the delayed coagulation ready-mixed mortar is convenient to use, the secondary time and labor consuming water addition is avoided when the delayed coagulation ready-mixed mortar is used in hot weather construction, and the preparation method is simple and low in cost.

Description

technical field [0001] The invention relates to a ready-mixed mortar and a preparation method thereof, in particular to a retarded ready-mixed mortar and a preparation method thereof. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B28/08C04B24/10C04B24/18C04B24/38C04B103/22
Inventor 刘文海
Owner 江苏建华新型墙材有限公司
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