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A kind of rigid waterproof mortar and preparation method thereof

A rigid waterproof and mortar technology, applied in the field of building materials, can solve the problems of not meeting the requirements of protective layer thickness, high cost of polymer fibers, structural cracking and leakage, etc., to achieve increased waterproof effect, small porosity, and reasonable distribution of pore structure Effect

Active Publication Date: 2022-02-18
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study pointed out that in order to prevent carbonization of mortar, causing steel fiber corrosion, and volume expansion leading to structural cracking and leakage, the thickness of the steel fiber protective layer should not be less than 10mm, while the thickness of cement-based waterproof mortar is generally 5-10mm, which does not meet the thickness requirements of the protective layer.
However, the cost of polymer fiber is high and the economic benefit is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] As a preferred embodiment of the present invention, this embodiment discloses:

[0028] A rigid waterproof mortar, each cubic meter of mortar includes the following raw materials configured by weight: 500kg of cement-based cementitious material, 1300kg of quartz sand, 2.5kg of chopped basalt fiber, 1kg of silicone surfactant, and 0.8 kg of polycarboxylate water reducer kg, water 300kg.

[0029] In this embodiment, the cement-based cementitious material includes the following raw materials by mass percentage: 63% Portland cement clinker, 16% aluminate cement clinker, 9% dihydrate gypsum, 7% active mixed material, 5% Ultrafine metakaolin.

[0030] Quartz sand gradation in this example: 25% of the 2.36mm standard sieve, 10% of the 1.18mm standard sieve, 20% of the 0.6mm standard sieve, 15% of the 0.3mm standard sieve, 0.075mm standard sieve The remaining 30%.

[0031] In this embodiment, the chopped basalt fiber has a length of 5-20 mm.

[0032] In this embodiment, the...

Embodiment 2

[0038] As a preferred embodiment of the present invention, this embodiment discloses:

[0039] A rigid waterproof mortar, each cubic meter of mortar includes the following raw materials configured by weight: 700kg of cement-based cementitious material, 1000kg of quartz sand, 10kg of chopped basalt fiber, 7kg of organic silicon surfactant, and 1.4kg of polycarboxylate superplasticizer , 400kg of water.

[0040] In this embodiment, the cement-based cementitious material includes the following raw materials by mass percentage: 56% Portland cement clinker, 11% aluminate cement clinker, 6% dihydrate gypsum, 25% active mixed material, 2% Ultrafine metakaolin.

[0041] Quartz sand gradation in this example: 15% of the sieve on the 2.36mm standard sieve, 15% on the 1.18mm standard sieve, 30% on the 0.6mm standard sieve, 20% on the 0.3mm standard sieve, 20% on the 0.075mm standard sieve The remaining 20%.

[0042] In this embodiment, the chopped basalt fiber has a length of 5-20 mm....

Embodiment 3

[0049] As a preferred embodiment of the present invention, this embodiment discloses:

[0050] A rigid waterproof mortar, each cubic meter of mortar includes the following raw materials configured by weight: 600kg of cement-based cementitious material, 1200kg of quartz sand, 6kg of chopped basalt fiber, 4kg of silicone surfactant, and 0.5kg of polycarboxylate superplasticizer , Water 350kg.

[0051] In this embodiment, the cement-based cementitious material includes the following raw materials by mass percentage: 60% Portland cement clinker, 14% aluminate cement clinker, 7% dihydrate gypsum, 15% active mixed material, 4% Ultrafine metakaolin.

[0052] Quartz sand gradation in this example: 20% of the 2.36mm standard sieve, 12% of the 1.18mm standard sieve, 25% of the 0.6mm standard sieve, 20% of the 0.3mm standard sieve, 0.075mm standard sieve The remaining 23%.

[0053] In this embodiment, the chopped basalt fiber has a length of 5-20 mm.

[0054] In this embodiment, the ...

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Abstract

The invention discloses a rigid waterproof mortar and a preparation method thereof, and relates to the technical field of building materials. Each cubic meter of waterproof mortar of the present invention includes 500-700kg of cement-based cementitious material, 1000-1300kg of quartz sand, 2.5-10kg of chopped basalt fiber, 1-7kg of organic silicon surfactant, and 0.5-1.4kg of polycarboxylate water reducer , Water 240~400kg, of which cement-based cementitious materials include 56~63% Portland cement clinker, 11~16% aluminate cement clinker, 6~9% dihydrate gypsum, 7~20% active mixed material , 2~5% superfine metakaolin. The invention also provides a preparation method of the rigid waterproof mortar, which is simple to operate, does not raise dust during the stirring process, and can evenly distribute the fibers. The invention mainly solves the problems of large early shrinkage, poor bending resistance and waterproof effect of rigid waterproof mortar, and has the characteristics of compact structure, water repellency and high durability.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a rigid waterproof mortar and a preparation method thereof. Background technique [0002] Roof or underground waterproofing projects are divided into rigid waterproofing and flexible waterproofing according to different materials. Rigid waterproof materials mainly include waterproof concrete and waterproof mortar, while flexible waterproof includes waterproof membrane and waterproof coating. As we all know, flexible waterproof materials have poor aging resistance. Compared with flexible waterproof materials, rigid waterproof mortar has a wide range of sources, low cost and good durability, so it is worth promoting and using. [0003] Due to self-shrinkage, drying shrinkage, cold shrinkage, carbonization and other reasons, the waterproof mortar configured with ordinary Portland cement often shrinks, cracks and leaks, which reduces the durability and use function of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C04B111/27
CPCC04B28/065C04B2111/27C04B2201/50C04B2111/2015
Inventor 林燕王宁胡继宗杨涛
Owner JIAHUA SPECIAL CEMENT
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