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Antifreeze ready mixed mortar and preparation method thereof

A technology for ready-mixed mortar and anti-freezing agent, which is applied in the field of anti-freezing ready-mixed mortar and its preparation, can solve the problems of long setting time and poor anti-freezing performance of ready-mixed mortar, and achieves improved waterproof and impermeability performance, low cost and convenient use. Effect

Active Publication Date: 2012-10-03
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 long setting time and poor anti-freeze performance of existing ready-mixed mortar in winter, the present invention provides an anti-freeze ready-mixed mortar and its preparation method

Method used

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  • Antifreeze ready mixed mortar and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Ready-mixed mortar includes the following components by 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%, Expansion agent 1.2%, water reducing agent 1.0%, antifreeze 0.5%.

[0025] among them,

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

[0027] Engineering fiber is polypropylene fiber;

[0028] The expansion agent is UEA-IV expansion agent;

[0029] The water reducing agent is a naphthalene-based powder water reducing agent;

[0030] The antifreeze is sodium nitrite.

[0031] The preparation method is as follows:

[0032] 1) Dry the medium-fine sand to a moisture content 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 reducing agent and antifreeze to cement, and stir it evenly to obtain additive cement mixture; ...

Embodiment 2

[0036] Ready-mixed mortar includes the following components by weight percentage: ordinary Portland cement 30%, medium-fine sand with a fineness modulus of 1.6-2.3 64.7%, cellulose ether polymer 0.1%, engineering fiber 0.1% , Expanding agent 4.0%, water reducing agent 0.1%, antifreeze 1.0%.

[0037] among them,

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

[0039] 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 reducing agent is a polycarboxylic acid powder water reducing agent;

[0042] The antifreeze is sodium chloride.

[0043] The preparation method is as follows:

[0044] 1) Dry the medium-fine sand to a moisture content 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, engineering fiber, e...

Embodiment 3

[0048] Ready-mixed mortar, including the following components by weight percentage: 27.6% slag portland cement, 70% medium-fine sand with a fineness modulus of 1.6-2.3, 0.2% cellulose ether polymer, and 1.0% engineering fiber , Expanding agent 0.1%, water reducing agent 1.0%, antifreeze 0.1%.

[0049] among them,

[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 reducing agent is an aliphatic powder water reducing agent;

[0054] The antifreeze is calcium chloride.

[0055] The preparation method is as follows:

[0056] 1) Dry the medium-fine sand to a moisture content 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;

[0057] 2) Add cellulose ether polymer, engineering fiber, expansion agent, ...

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Abstract

The invention discloses antifreeze ready mixed mortar, which comprises the following components by weight percentages: 20 to 35% of cement, 60 to 79% of medium and fine-grained sand, 0.05 to 0.3% of cellulose ether polymer, 0.1 to 2.0% of engineering fiber, 0.1 to 4.0% of bulking agent, 0.1 to 1.0% of water reducing agent and 0.1 to 1.0% of antifreeze. The antifreeze ready mixed mortar provided by the invention comprises sodium nitrite and other antifreezes, so that the problem that the internal structure of the ready mixed mortar used in winter is damaged by freezing and thawing can be effectively solved, the clotting time of mortar is obviously shortened, the antifreeze performance of mortar is improved, and the durability of mortar is improved. The antifreeze ready mixed mortar is convenient to use, a time-consuming and labor-consuming wind proofing fence which is used in winter construction is avoided being used, the preparation method is simple, and the cost is low.

Description

Technical field [0001] The invention relates to a ready-mixed mortar and a preparation method thereof, in particular to an antifreeze 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. According to its performance, it can be divided into ordinary ready-mixed mortar and special mortar. Common 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. Floor mortars are used for ground leveling in ordinary and special occasions. Special mortars include thermal insulation mortars, decorative mortars, self-leveling mortars, waterproof mortars, etc.,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/08C04B22/08
Inventor 俞海军
Owner 江苏建华新型墙材有限公司
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