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Modified expansion water-stop mortar and preparation method thereof

A technology for expanding water-stopping and mortar, which is applied in the field of water-stopping mortar, can solve the problems of poor toughness, low ultimate tensile strength, and poor crack resistance of rigid water-stopping mortar, so as to improve construction performance, be beneficial to environmental protection, and improve flexibility. Effects of Sex and Elasticity

Active Publication Date: 2013-09-18
北京振利节能环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a modified expansion water-stop mortar and its preparation method to solve the problems of poor toughness, poor crack resistance, brittleness and low ultimate tensile strength of the existing rigid water-stop mortar

Method used

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  • Modified expansion water-stop mortar and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, this modified expansion waterproof mortar, its raw material composition and weight percentage ratio are as follows:

[0029] Sulphoaluminate cement 25%;

[0030] Quartz sand 60%;

[0031] Redispersible rubber powder 5%;

[0032] Cellulose ether 0.1%;

[0033] Calcium stearate 0.3%;

[0034] Composite light aggregate 9.6%;

[0035] The composite light aggregate is a mixture of waste polyurethane particles and rubber particles, and the weight ratio of the two is 10:90.

Embodiment 2

[0036] Embodiment 2, this modified expansion waterproof mortar, its raw material composition and weight percentage ratio are as follows:

[0037] Sulphoaluminate cement 30%;

[0038] Quartz sand 60%;

[0039] Redispersible rubber powder 4.6%;

[0040] Cellulose ether 0.1%;

[0041] Calcium stearate 0.3%;

[0042] Composite light aggregate 5%;

[0043] The composite light aggregate is a mixture of waste polyurethane particles and rubber particles, and the weight ratio of the two is 20:80.

Embodiment 3

[0044] Embodiment 3, this modified expansion waterproof mortar, its raw material composition and weight percentage ratio are as follows:

[0045] Sulphoaluminate cement 40%;

[0046] Quartz sand 46%;

[0047] Redispersible rubber powder 3.6%;

[0048] Cellulose ether 0.1%;

[0049] Calcium stearate 0.3%;

[0050] Composite light aggregate 10%;

[0051] The composite light aggregate is a mixture of waste polyurethane particles and rubber particles, and the weight ratio of the two is 20:80.

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Abstract

The invention discloses modified expansion water-stop mortar and a preparation method thereof. The modified expansion water-stop mortar comprises the following raw materials in percentage by weight: 25 to 50 percent of sulphoaluminate cement, 40 to 60 percent of quartz sand, 3 to 5 percent of redispersible rubber powder, 0.1 to 0.3 percent of cellulose ether, 0.3 to 1 percent of calcium stearate and 5 to 10 percent of composite lightweight aggregate, wherein the composite lightweight aggregate is mixture of waste polyurethane particles and rubber particles; and the weight ratio of the waste polyurethane particles to the rubber particles is (10-30):(70-90). The flexibility and elasticity of the expansion water-stop mortar are improved obviously, the construction performance of the mortar is improved, the ratio of compressive strength of a cementing material is reduced, and the elastic modulus of the material is reduced. When the modified expansion water-stop mortar is used during construction, harmful fissures which are caused by the change of temperature and humidity, vibration and the like can be reduced, and the waterproofing and anti-permeability capacities of the motor are improved. The expansion water-stop mortar is particularly suitable for waterproofing treatment of openings and eavesprojection structures of doors and windows in construction engineering.

Description

technical field [0001] The invention relates to a waterproof mortar used in construction engineering and a preparation method of the mortar. Background technique [0002] The door and window openings and overhanging structures of construction projects are often treated with rigid waterproof mortar. Rigid water-stop mortar is mainly made of cement and water-repellent agent. The mortar itself produces a certain self-stress, which can prevent rainwater from penetrating between the window frame and the insulation layer. The surface water absorption of the mortar is low, which can prevent external bright Water penetrates into the mortar to play a certain role in waterproofing. Rigid waterproof mortar has poor toughness, poor crack resistance, brittleness, low ultimate tensile strength, and is more susceptible to harmful cracks caused by temperature and humidity changes and vibration, so that the waterproof and impermeability of the mortar is greatly reduced. [0003] Waste rubb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C04B18/30C04B18/22C04B18/20
CPCY02W30/91
Inventor 付海明林燕成
Owner 北京振利节能环保科技股份有限公司
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