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A kind of cement-based self-leveling mortar and its application

A self-leveling mortar, cement-based technology, applied in the field of special building materials, can solve the problems of slow strength development, poor surface flatness, poor wear resistance, etc.

Active Publication Date: 2021-05-11
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, my country's cement-based self-leveling mortar still has technical defects such as shrinkage cracking, hollowing, poor wear resistance, poor surface smoothness, and slow strength development in engineering applications. It is urgent to improve and perfect its performance. To provide technical support for a wider range of applications

Method used

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  • A kind of cement-based self-leveling mortar and its application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A cement-based self-leveling mortar, in parts by weight, the cement-based self-leveling mortar is composed of the following raw material components:

[0037] 1) cement, 200 parts;

[0038] 2) Active admixture, 100 parts; wherein, the active admixture is composed of metakaolin, 0 part; microbeads, 0 part; silica fume, 100 parts.

[0039] 3) Filler, 200 parts; Among them, the filler is composed of silica sand powder, 70 parts; limestone powder, 30 parts.

[0040] 4) aggregate, 490 parts;

[0041] 5) Functional additives, 10 parts; wherein, functional additives consist of water reducing agent, 25 parts; water retention agent, 2 parts; redispersible latex powder, 72 parts; plastic expansion agent, 1 part; defoamer, 0 parts composition.

[0042] Weigh and measure all the raw material components of the cement-based self-leveling mortar according to the ratio, and then put all the raw material components after weighing into the mixer for stirring and dry mixing to obtain a mi...

Embodiment 2

[0047] A cement-based self-leveling mortar, in parts by weight, the cement-based self-leveling mortar is composed of the following raw material components:

[0048] 1) cement, 300 parts;

[0049] 2) Active admixture, 80 parts; wherein, the active admixture is composed of metakaolin, 0 parts; microbeads, 20 parts; silica fume, 80 parts.

[0050] 3) Filler, 150 parts; Among them, the filler is composed of silica sand powder, 80 parts; limestone powder, 20 parts.

[0051] 4) aggregate, 462 parts;

[0052] 5) Functional additives, 8 parts; Among them, functional additives are water reducing agent, 20 parts; Water retaining agent, 3 parts; Redispersible latex powder, 74.9 parts; Plastic expansion agent, 2 parts; 0.1 part composition.

[0053] Weigh and measure all the raw material components of the cement-based self-leveling mortar according to the ratio, and then put all the raw material components after weighing into the mixer for stirring and dry mixing to obtain a mixture, a...

Embodiment 3

[0059] A cement-based self-leveling mortar, in parts by weight, the cement-based self-leveling mortar is composed of the following raw material components:

[0060] 1) cement, 350 parts;

[0061] 2) Active admixture, 50 parts; wherein, the active admixture is composed of metakaolin, 10 parts; microbeads, 0 part; silica fume, 90 parts.

[0062] 3) Filler, 100 parts; Wherein, the filler is composed of silica sand powder, 100 parts; limestone powder, 0 parts.

[0063] 4) aggregate, 495 parts;

[0064] 5) Functional additives, 5 parts; wherein, functional additives consist of water reducer, 15 parts; water retaining agent, 5 parts; redispersible latex powder, 76.95 parts; plastic expansion agent, 3 parts; 0.05 part composition.

[0065] Weigh and measure all the raw material components of the cement-based self-leveling mortar according to the ratio, and then put all the raw material components after weighing into the mixer for stirring and dry mixing to obtain a mixture, and th...

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Abstract

The invention provides a cement-based self-leveling mortar and an application thereof. In parts by weight, the cement-based self-leveling mortar includes the following raw material components: cement, 200-350 parts; active admixture, 0-100 parts; filler, 100-200 parts; aggregate, 400-550 parts ; Functional additives, 5‑10 parts. Weigh and measure all the raw material components of the cement-based self-leveling mortar according to the ratio, and then put all the raw material components after weighing into the mixer for stirring and dry mixing to obtain a mixture, and then add it to the mixture The water is stirred evenly, and it can be used; the amount of water added is 15-20% of the weight of the cement-based self-leveling mortar mixture used. The main raw material in the technical solution provided by the invention is a general-purpose building material, which is easy to obtain, low in cost, and suitable for industrial production. The cement-based mortar of the invention has a fluidity greater than 160mm, good leveling effect, high strength, excellent wear resistance and crack resistance, no shrinkage, low cost, harmless to human body, and no radiation.

Description

technical field [0001] The invention relates to the technical field of special building materials, in particular to a cement-based self-leveling mortar and its application. Background technique [0002] Self-leveling mortar is a ground material developed in the 1970s, which is divided into inorganic and organic systems. The organic system is mainly based on epoxy self-leveling, while the inorganic system is divided into two types: gypsum-based and cement-based. [0003] Although gypsum-based self-leveling mortar is the earliest ground self-leveling material, it has not been widely used because of its own shortcomings such as poor water resistance, poor wear resistance and low surface hardness. Therefore, the research and application of cement-based self-leveling mortar has attracted international attention. [0004] At present, my country's cement-based self-leveling mortar still has technical defects such as shrinkage cracking, hollowing, poor wear resistance, poor surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B14/106C04B14/02C04B18/146C04B14/06C04B14/28C04B14/068C04B24/24C04B24/383C04B24/38C04B2103/0057C04B2103/0068C04B24/42
Inventor 王雨利金祖权罗树琼管学茂史才军
Owner HENAN POLYTECHNIC UNIV