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Crack-resisting mortar for insulation of modified rubber powder and preparation method thereof

A technology of modified rubber and anti-cracking mortar, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., to achieve the effect of improved flexural toughness, improved flexural toughness, and broad market prospects

Active Publication Date: 2011-10-26
CHINA XINXING BAOXIN CONSTR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no reports at home and abroad about the anti-crack mortar and its preparation method for modified rubber powder insulation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0036] An anti-crack mortar for heat preservation of modified rubber powder, the ratio of parts by weight is:

[0037] 5 parts of 50 mesh modified rubber powder

[0038] 25 parts of 100 mesh modified rubber powder

[0039] 50 parts of 52.5R ordinary Portland cement

[0040] 10 parts of machine-made sand or natural sand with a particle size of 20-150 mesh

[0041] 0.5 part of polypropylene fiber with length less than 8mm

[0042] 0.5 parts of redispersible latex powder

[0043] 3 parts of quicklime with a particle size of 250 mesh

[0044] 0.1 part of hydroxyethyl methyl cellulose ether, the viscosity is between 100000Pa.s-150000Pa.s

[0045] Acrylic epoxy resin synthetic concrete air-entraining agent 0.015 parts

[0046] Wherein, the modified rubber powder includes modifier and rubber powder, and its parts by weight ratio is 20 parts of modifier and 80 parts of rubber powder:

[0047] The following method is used to prepare the anti-cracking mortar for heat preservation...

Embodiment 2

[0055] An anti-crack mortar for heat preservation of modified rubber powder, the ratio of parts by weight is:

[0056] 80 mesh modified rubber powder 10 parts

[0057] 150 mesh modified rubber powder 25 parts

[0058] 70 parts of cement

[0059] 20 parts of sand

[0060] 0.5 parts of polypropylene fiber

[0061] 0.5 parts of redispersible latex powder

[0062] 3 parts quicklime

[0063] 0.1 part of cellulose ether

[0064] Air-entraining agent 0.015 parts

[0065] Wherein, the modified rubber powder includes modifier and rubber powder, and its parts by weight ratio is 10 parts of modifier and 90 parts of rubber powder:

[0066] The following method is used to prepare the anti-cracking mortar for heat preservation of modified rubber powder, comprising the following steps:

[0067] (1) The ratio of modifiers by weight: vinyltriethoxysilane 10, hydroxyethyl acrylate 6, potassium persulfate 0.5, water 83.5;

[0068] (2) Preparation of modifier: Measure the above materials...

Embodiment 3

[0074] An anti-crack mortar for heat preservation of modified rubber powder, the ratio of parts by weight is:

[0075] 100 mesh modified rubber powder 20 parts

[0076] 180 mesh modified rubber powder 40 parts

[0077] 100 parts of cement

[0078] Sand 30 parts

[0079] 1 part polypropylene fiber

[0080] 1.5 parts of redispersible latex powder

[0081] 2 parts quicklime

[0082] 1 part cellulose ether

[0083] Air-entraining agent 0.03 parts

[0084] Wherein, the modified rubber powder includes modifier and rubber powder, and its parts by weight ratio is 15 parts of modifier and 85 parts of rubber powder:

[0085] The following method is used to prepare the anti-cracking mortar for heat preservation of modified rubber powder, comprising the following steps:

[0086] (1) The weight ratio of the modifier: 15% of vinyl triethoxysilane, 9% of hydroxyethyl acrylate, 2% of potassium persulfate, and 74% of water;

[0087] (2) Modifier preparation: measure the above material...

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Abstract

The invention provides crack-resisting mortar for insulation of a modified rubber powder and a preparation method thereof. The crack-resisting mortar for insulation comprises the following raw materials in parts by weight: 5-60 parts of modified rubber powder, 50-110 parts of cement, 10-50 parts of sand, 0.5-2 parts of polypropylene fiber, 0.5-3 parts of dispersible latex powder, 2-3 parts of quick lime, 0.1-1 part of cellulose ether and 0.01-0.03 part of air entraining agent. The preparation method comprises the following steps: preparing a modifier; preparing the modified rubber powder; carrying out air-drying for later use; and carrying out mix preparation so as to obtain the crack-resisting mortar for the insulation of the modified rubber powder. Compared with the crack-resisting mortar for the insulation of the unmodified rubber powder, the compression strength, rupture strength and flexural toughness of the crack-resisting mortar in the invention are improved under the same flowability condition, wherein the rupture strength is larger than 450kpa, the compression strength is larger than 700KPa, the bonding strength is more than 180KPa, linear shrinkage is less than 1%, and the softening coefficient is more than 0.9. The crack-resisting mortar in the invention has a huge effect in the building field and a wide market prospect.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an anti-crack mortar for heat preservation of modified rubber powder and a preparation method thereof. technical background [0002] With the rapid development of my country's automobile industry, the number of waste tires continues to rise. In 2008, there were about 200 million waste tires in my country, and only 45% of the old tires were recycled. Due to its cross-linked structure, waste rubber has "insoluble, The characteristics of "non-melting" can not be degraded by landfill treatment, and at the same time, it will cause great pollution to the soil and groundwater environment; while incineration treatment can recover part of the energy, but it will bring air pollution, so it constitutes a serious "black pollution" ". How to realize its efficient and clean utilization has become an urgent scientific research topic. [0003] At present, there are few studies on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B16/06C04B18/22
CPCC04B18/22C04B28/04Y02W30/91C04B14/068C04B16/0633C04B20/0076C04B22/064C04B22/147C04B24/06C04B24/383C04B24/42C04B40/0028C04B40/0082C04B2103/0057C04B2103/304C04B24/26C04B24/281C04B20/1029
Inventor 袁瑞青岳建伟王树旗李强戴连双
Owner CHINA XINXING BAOXIN CONSTR CORP
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