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Rubber powder cement mortar for construction heat insulation and preparation thereof

A technology of cement mortar and building thermal insulation, which is applied in the field of building materials to achieve the effects of excellent workability, improved thermal insulation capacity, and excellent thermal performance

Inactive Publication Date: 2008-11-12
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both come from the current domestic and foreign reports on this aspect

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1, building insulation with rubber powder cement mortar by cement 22.14% (percentage by weight, the same below), water reducing agent (mass fraction 20%) 0.22%, air-entraining agent 0.01%, rubber powder 66.42%, latex powder 0.11% , 0.01% cellulose ether and 11.07% water. The consistency of this cement mortar is 80mm, the layering degree is 20mm, and the dry apparent density is 850kg m -3 , the thermal conductivity is 0.08W·m -1 ·K -1 , Softening coefficient 1.00, 28d flexural strength 410KPa, 28d compressive strength 640KPa, linear shrinkage 0.09%, 56d compressive shear bond strength 120KPa.

Embodiment 2

[0028] Embodiment 2, the rubber powder cement mortar of building heat preservation is by cement 22.14% (percentage by weight, hereinafter the same), water reducer (mass fraction 20%) 0.22%, air-entraining agent 0.01%, rubber powder 63.10%, sand 3.32%, It is prepared by 0.11% of latex powder, 0.01% of cellulose ether and 11.07% of water. The consistency of this cement mortar is 82mm, the layering degree is 20mm, and the dry apparent density is 900kg m -3 , the thermal conductivity is 0.09W·m -1 ·K -1 , Softening coefficient 1.00, 28d flexural strength 450KPa, 28d compressive strength 700KPa, linear shrinkage 0.09%, 56d compressive shear bond strength 130KPa.

Embodiment 3

[0029] Embodiment 3, the rubber powder cement mortar of building heat preservation is by cement 22.14% (percentage by weight, hereinafter the same), water reducer (mass fraction 20%) 0.22%, air-entraining agent 0.01%, rubber powder 59.78%, sand 6.31%, It is prepared by 0.11% of latex powder, 0.01% of cellulose ether and 11.07% of water. The consistency of this cement mortar is 83mm, the layering degree is 20mm, and the dry apparent density is 950kg m -3 , the thermal conductivity is 0.09W·m -1 ·K -1 , Softening coefficient 1.00, 28d flexural strength 470KPa, 28d compressive strength 740KPa, linear shrinkage rate 0.09%, 56d compressive shear bond strength 150KPa.

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Abstract

The invention belongs to the building material technical field, in particular relating to rubber cement mortar used for construction heat-insulation and a method for preparing the same. The cement mortar consists of cement, water reducing agent, air-entraining agent, rubber powder, sand, polymer powder, cellulose ether and water. The velocity of the cement mortar is about 80 mm, the layering degree of the cement mortar is about 20 mm, the dry apparent density of the cement mortar reaches 850 kg.m<3>, the thermal conductivity is about 0.08 W.m<-1>, the softening coefficient reaches 1.00, the folding strength is 410 KPa, the pressive strength is 640KPa, the linear shrinkage factor is about 0.09 percent, and the 56 d pressure and shear cohesional strength is 120 KPa. The cement mortar is suitable for various heat-insulation projects.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a rubber powder cement mortar for building heat preservation and a preparation method thereof. Background technique [0002] With the rapid development of my country's automobile industry, the reasonable disposal of waste tires has become a major environmental issue that has attracted the attention of the society. According to incomplete statistics, in 2006 alone, the amount of discarded automobile tires in my country exceeded 100 million pieces, and among these waste tires, only about 50% were properly recycled and utilized. The appearance of waste tires not only seriously pollutes our living environment, but also is a great waste of resources. If they are piled up together, they can easily cause fires. Their incomplete combustion will release hydrocarbons and toxic gases, and the flames are also very difficult. put out. [0003] The current government h...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/22C04B24/38
CPCC04B2201/50C04B2111/34C04B2201/20C04B2201/32C04B28/02Y02W30/91C04B14/06C04B18/22C04B24/26C04B24/383C04B2103/302C04B2103/304
Inventor 孙振平陈柯柯
Owner TONGJI UNIV
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