Machine-made sand plastering mortar additive

A plastering mortar and admixture technology, applied in the field of building materials, can solve the problems of poor workability of machine-made mortar, hollowing and cracking of mortar, and achieve the effects of inhibiting hollowing and cracking, reducing water-cement ratio and high strength

Inactive Publication Date: 2014-09-24
北京博润佳科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to solve the problems of poor workability of machine-made ...

Method used

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  • Machine-made sand plastering mortar additive
  • Machine-made sand plastering mortar additive

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Embodiment Construction

[0020] Below by embodiment, the present invention will be further described. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] A special mortar additive for machine-made sand, which is formulated according to the following weight percentages: hydroxypropyl methylcellulose ether: 15%; starch ether: 30%; redispersible latex powder: 30%; air-entraining agent: 5%; Polycarboxylate superplasticizer: 20%, weighed according to the proportion, add it into the gravity-free mixer in a certain order and stir, stir and mix for 15 minutes, and release the material to pack the finished admixture.

[0022] The percentage of mortar ingredients and main physical and chemical indicators added with the above-mentioned special mortar admixture for machine-made sand are as follows:

[0023]

[0024]

[0025] 1# is the mortar sample without admixture, 2#, 3# and 4# are the mortar samples mixed with d...

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Abstract

The invention relates to the field of building materials, and discloses a machine-made sand plastering mortar additive. The machine-made sand plastering mortar additive comprises the following components by mass percent: 10-20% of cellulose hydroxypropyl methyl ether hyprolose, 20-50% of starch ether, 10-40% of redispersible latex powder, 2-10% of air entraining agent and 10-30% of polycarboxylate superplasticizer. The machine-made sand is crushed by a special crusher. The machine-made sand plastering mortar additive has the defects of poor grain shape and high mountain flour content. The problem to be solved is as follows: the problem of poor mortar application property caused by the machine-made sand grain form is improved by adding the additive, and the adding quantity of the mountain flour in the mortar is improved. The machine-made sand plastering mortar additive disclosed by the invention is an environment-friendly material, the adding quantity is 0.05-0.15%, and the machine-made sand plastering mortar additive is low in adding quantity and high in cost performance. The machine-made sand mortar doped with the additive disclosed by the invention has excellent application property, high water-retention rate, high bonding strength and high mortar strength, the cement content is saved, hollowing and cracking of the mortar are effectively restrained, and the construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a plastering mortar admixture whose aggregate component is machine-made sand. Background technique [0002] The aggregate of ready-mixed mortar in my country is mainly natural sand. With the continuous increase of construction area, the demand for natural sand is also increasing. Coupled with the disorderly mining of natural sand, natural sand resources are close to depletion and serious damage the natural environment. In the future, the replacement of natural sand with machine-made sand will surely become the mainstream. However, the existing problems of machine-made sand are poor grain shape and unsatisfactory stone powder content. The mortar produced by machine-made sand has the following two problems: one is the poor construction of the mortar, that is, the shape of the machine-made sand is not round enough, and the bulk density is too large, which makes the machine-m...

Claims

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Application Information

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IPC IPC(8): C04B24/38
Inventor 马文凯董慧艳张艳凤
Owner 北京博润佳科技有限公司
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