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A dry-mixed self-leveling mortar

A self-leveling mortar and dry-mixing technology, which is applied in the field of building materials, can solve problems such as increasing shrinkage, and achieve the effects of reducing cement consumption, significant social and economic benefits, and reducing cracks

Active Publication Date: 2016-09-14
潍坊德霖建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditionally used powder superplasticizers include naphthalene-based superplasticizer (PNS) and melamine-based superplasticizer (PMS), which are important admixtures for preparing self-leveling materials, but they are important in improving the fluidity of mortar. At the same time, it also significantly increased its shrinkage rate

Method used

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  • A dry-mixed self-leveling mortar
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  • A dry-mixed self-leveling mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A dry-mixed self-leveling mortar is prepared from the following raw materials in parts by weight:

[0046] 30 parts of cement, 5 parts of fly ash, 5 parts of mineral powder, 45 parts of recycled fine aggregate, 10 parts of compound admixture;

[0047] The compound additive is prepared from the following raw materials in parts by weight:

[0048] 40 parts of fly ash, 2 parts of high-efficiency polycarboxylate superplasticizer, 6 parts of water-retaining tackifier, 40 parts of HEA expansion agent, 2 parts of surfactant, and 1 part of citric acid.

[0049] The physical properties of cement are as follows:

[0050]

[0051] The fly ash is Class I fly ash, the sieve residue of 45 micron is not more than 12%, and the loss on ignition is not more than 5%. The ore powder is S95 grade steel slag fine powder, the sieve residue of 45 micron is not more than 1%, and the performance index is as follows.

[0052]

[0053] The regenerated fine aggregate refers to the fine agg...

Embodiment 2

[0057] The raw material that adopts is identical with embodiment 1, and difference is that present embodiment comprises the raw material that is prepared from following weight portion:

[0058] 45 parts of cement, 10 parts of fly ash, 10 parts of mineral powder, 50 parts of recycled fine aggregate, 5 parts of compound admixture;

[0059] The compound additive is prepared from the following raw materials in parts by weight:

[0060] 50 parts of fly ash, 5 parts of high-efficiency polycarboxylate superplasticizer, 10 parts of water-retaining tackifier, 50 parts of HEA expansion agent, 1 part of surfactant, and 2 parts of citric acid.

Embodiment 3

[0062] A dry-mixed self-leveling mortar prepared from the following raw materials in parts by weight:

[0063] 42 parts of cement, 8 parts of fly ash, 8 parts of mineral powder, 48 parts of recycled fine aggregate, 8 parts of compound admixture;

[0064] The compound additive is prepared from the following raw materials in parts by weight:

[0065] 47 parts of fly ash, 4 parts of high-efficiency polycarboxylate superplasticizer, 8 parts of water-retaining tackifier, 47 parts of HEA expansion agent, 1.5 parts of surfactant, and 1.5 parts of citric acid.

[0066] The physical properties of cement are as follows:

[0067]

[0068] The fly ash is Class I fly ash, the sieve residue of 45 micron is not more than 12%, and the loss on ignition is not more than 5%. The mineral powder is steel slag fine powder of S95 grade, and the 45 micron sieve is not more than 1%, and the performance index is as follows:

[0069]

[0070] The regenerated fine aggregate refers to the fine ag...

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Abstract

Disclosed dry-mixed self-leveling mortar is prepared from the following raw materials in parts by weight: 30-45 parts of cement, 5-10 parts of fly ash, 5-10 parts of mineral powder, 45-50 parts of regenerated fine aggregate, 5-10 parts of a compound additive. The compound additive is prepared from the following raw materials in parts by weight: 40-50 parts of fly ash, 2-5 parts of a polycarboxylate superplasticizer, 6-10 parts of a water-retaining tackifier, 40-50 parts of HEA expanding agent, 1-2 parts of a surfactant, and 1-2 parts of citric acid. The provided self-levelling mortar is low in water-glue ratio, improved in density, reduced in shrinkage and substantially improved in performances.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a dry-mixed self-leveling mortar. Background technique [0002] Self-leveling materials (SL for short) is a new type of ground material developed gradually at home and abroad in the 1980s. It has good fluidity, easy construction, fast leveling speed, time-saving, thin leveling layer, and ground The advantages of good flatness and high compressive strength can effectively solve the slow construction speed, poor flatness, and easy sanding caused by plastering of traditional floor materials, which greatly meets the high requirements of new buildings on the base layer, and is suitable for Ground repair and renovation works. At present, self-leveling materials have become ideal materials for floor paving of large supermarkets, shopping malls, parking lots, factory workshops, warehouses, etc., and are also a development direction of modern building floor construction, with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B24/38
Inventor 李涛高翔鹏
Owner 潍坊德霖建材科技有限公司
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