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Ready mixed dry mortar and preparation method thereof

A dry-mixed mortar and fine sand technology, which is applied in the field of dry-mixed mortar, can solve the problems of low level of civilized construction, unstable mortar quality, and single type of mortar, so as to facilitate the growth of cement strength and mixing construction, flexible formula, The effect of low drying shrinkage

Inactive Publication Date: 2012-04-11
中山建华墙体材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the technological progress of the construction industry and the improvement of civilized construction requirements, the on-site mortar mixing has increasingly shown its inherent defects, such as unstable mortar quality, large waste of materials, single type of mortar, low degree of civilized construction, and environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The dry-mixed mortar of the present invention is composed of 19.5% of composite Portland cement marked as P.C 32.5, 80% of natural river sand with a fineness modulus of 1.6-2.3 and 0.5% of methyl cellulose ether.

[0034] Dry the medium-fine sand naturally, and then screen out the particles larger than 4.75mm, and weigh them for later use; weigh the cellulose ether polymer and cement, mix them evenly, and set aside; the medium-fine sand after sieving The mixture with cellulose ether polymer and cement is put into a mixer and stirred evenly to obtain a dry-mixed mortar with a strength grade of M10.

Embodiment 2

[0036] The dry-mixed mortar of the present invention is composed of 20% of Portland cement marked P.I32.5, 79.3% of natural river sand with a fineness modulus of 1.6-2.3 and 0.7% of hydroxypropyl methylcellulose ether.

[0037] Dry the medium-fine sand naturally, and then screen out the particles larger than 4.75mm, and weigh them for later use; weigh the cellulose ether polymer and cement, mix them evenly, and set aside; the medium-fine sand after sieving The mixture with cellulose ether polymer and cement is put into a mixer and stirred evenly to obtain a dry-mixed mortar with a strength grade of M10.

Embodiment 3

[0039] The dry-mixed mortar of the present invention is composed of 18% ordinary Portland cement with a label of P.O 32.5, 80% of natural river sand with a fineness modulus of 1.6-2.3 and 2% of methyl cellulose ether and hydroxypropyl methyl cellulose A mixture of ethers.

[0040] Dry the medium-fine sand naturally, and then screen out the particles larger than 4.75mm, and weigh them for later use; weigh the cellulose ether polymer and cement, mix them evenly, and set aside; the medium-fine sand after sieving The mixture with cellulose ether polymer and cement is put into a mixer and stirred evenly to obtain a dry-mixed mortar with a strength grade of M10.

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Abstract

The invention discloses a ready mixed dry mortar and a preparation method thereof. The ready mixed dry mortar is prepared by the following components in percentage by weight: 18-50% of cement, 48-80% of medium fine sand and 0.1-2% of cellulose ether high molecular polymer. The preparation method comprises the following steps of: A, drying the medium fine sand, screening to remove particles of more than 4.75mm and weighing for use; B, weighing the cellulose ether high molecular polymer and the cement, and uniformly stirring in advance for use; and C, adding the medium fine sand screened in the step A and the mixture of the cellulose ether high molecular polymer and the cement in the step B to a stirrer for uniformly stirring to obtain the product. The aim of the invention is to overcome the defects in the prior art and provide a high-quality ready mixed dry mortar containing high molecular polymer component. The other aim of the invention is to provide a method for preparing the ready mixed dry mortar.

Description

technical field [0001] The invention relates to a dry-mixed mortar, and also relates to a method for preparing the dry-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 building ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04C04B14/06
Inventor 宋震峰
Owner 中山建华墙体材料有限公司
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