Composite environment-friendly waterproof dry-mixed mortar and preparation method thereof

A dry powder mortar, environmental protection technology, applied in the field of building materials, can solve the problems of weakening waterproof effect, cracking, bending resistance, compressive strength reduction, etc., achieve strong thickening, improve impermeability and strength, good crack resistance and shrinkage resistance performance effect

Active Publication Date: 2015-12-30
FUJIAN MINGNENG NEW BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, a large number of engineering application practices have shown that although the incorporation of polymers in cement mortar improves the waterproof and impermeable properties of the mortar, and the mortar has early strength, the later flexural and compressive strengths of the mortar show a downward trend. Some are even cracking now, overall weakening their waterproofing

Method used

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  • Composite environment-friendly waterproof dry-mixed mortar and preparation method thereof

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preparation example Construction

[0039] A kind of preparation method of composite environmental protection waterproof dry powder mortar, it comprises steps:

[0040] S100 Mix the corresponding mass parts of cement, spun yarn, kaolin tailings, high-calcium fly ash and steel slag powder in a high-speed mixer, and the mixing temperature is 40°C;

[0041] S200 adding corresponding parts by mass of siloxane-styrene-acrylate copolymer latex powder, modified serpentine fiber and modified waterproof rubber powder into the mixer, and stirring for 3 minutes; and

[0042] S300 Add the corresponding mass parts of dialkyl polysiloxane, magnesium methacrylate, hydroxyethyl methylcellulose and 2-acrylamide-2 methacrylic sodium sulfonate into the mixer and continue stirring for 5 minutes, mixing Uniformly, the composite environmental protection waterproof dry powder mortar is prepared.

[0043] Wherein, the modified serpentine fiber in the step S200, its preparation method comprises steps:

[0044] Calcining the chrysotile...

Embodiment 1

[0054] The modified serpentine fiber and the modified waterproof rubber powder were respectively prepared according to the above preparation method.

[0055] Mix 320 parts of ordinary Portland cement, 80 parts of slag portland cement, 80 parts of fine sand, 120 parts of kaolin tailing sand, 80 parts of high-calcium fly ash, and 20 parts of steel slag fine powder in a high-speed mixer at 40 ° C. ; Weigh 15 parts of siloxane-styrene-acrylate copolymer latex powder, 15 parts of modified serpentine fiber, 10 parts of modified waterproof rubber powder and add in the mixer and stir for 3 minutes at the same temperature; Add 1.5 parts of dialkyl polysiloxane, 5 parts of magnesium methacrylate, 5 parts of hydroxyethyl methylcellulose, and 3 parts of 2-acrylamide-2-methacrylic sodium sulfonate into the mixer and continue stirring for 5 minutes , fully mixed evenly to prepare the composite water-retaining dry powder mortar.

[0056] Embodiment 2, 3, 4: the composition of the mass parts...

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Abstract

The invention provides composite environment-friendly waterproof dry-mixed mortar and a preparation method thereof. The composite environment-friendly waterproof dry-mixed mortar is prepared from cement, sand, modified polymer latex powder, admixtures and chemical additives, wherein the sand is composed of fine sand and kaolin tailing sand, the modified polymer latex powder is siloxane-styrene-acrylate copolymer latex powder, the admixtures comprise high-calcium fly ash, steel slag micropowder and modified chrysotile fibers, and the chemical additives comprise modified waterproof adhesive powder, dialkyl polysiloxane, methacrylic acid, hydroxyethyl methyl cellulose and 2-acrylamide sodium 2-methallyl sulfonate. In this way, the composite environment-friendly waterproof dry-mixed mortar is high in compressive strength, good in waterproof performance, high in cracking resistance and shrinkage resistance and low in cost.

Description

technical field [0001] The invention relates to a building material, in particular to a composite waterproof and environment-friendly dry powder mortar and a preparation method thereof. Background technique [0002] In recent years, with the large-scale development and application of urban underground space, as well as the repair and restoration of a large number of underground civil air defense projects, waterproof projects in these occasions mostly use rigid-flexible, multi-channel fortified backwater construction, so waterproof mortar products have Great market demand. [0003] Traditional waterproof mortars are mostly rigid waterproof mortar products, which can be used for waterproof construction on the backside and frontside, for waterproofing projects such as underground, roof, and exterior walls, and can be constructed on wet foundation surfaces; but in actual engineering During the application, it was found that this type of rigid waterproof mortar product has probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08C04B14/46C04B24/40
CPCC04B20/023C04B28/04C04B2111/27C04B2201/50C04B24/2688C04B24/42C04B24/383C04B24/16C04B24/04C04B24/24C04B18/142C04B18/08C04B18/12C04B14/4643C04B14/06
Inventor 张洲会林德
Owner FUJIAN MINGNENG NEW BUILDING MATERIAL CO LTD
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