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Inorganic insulating mortar with wide-range adjustable thermal conduction coefficient and its preparation method

A technology of inorganic thermal insulation mortar and thermal conductivity, which is applied in the field of building energy saving and building materials, can solve the problems of easy segregation and stratification of inorganic thermal insulation mortar in storage and transportation, large performance fluctuation, poor stability, etc., and achieves easy control of product quality and good construction performance. Excellent, thick application effect

Inactive Publication Date: 2012-04-25
TONGJI UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose an inorganic thermal conductivity mortar with wide adjustable thermal conductivity and its preparation method. Through the optimization of the mix ratio of the inorganic thermal insulation mortar and the research on the preparation method, a product with excellent and stable performance, wide adjustable thermal conductivity and satisfying Single-component inorganic thermal insulation mortar for different requirements of the project, and solve the problems of storage and transportation of inorganic thermal insulation mortar, easy segregation and layering, poor stability, and large performance fluctuations during construction

Method used

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  • Inorganic insulating mortar with wide-range adjustable thermal conduction coefficient and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Example 1: Inorganic thermal insulation mortar with a thermal conductivity of 0.050~0.060W / m.K, its components and proportions (percentage by weight) are: cement: 38.4%, fly ash: 5.8%, slaked lime: 5.8%, vitrified microbeads : 48.1%, PP fiber: 0.18%, redispersible latex powder: 1.055%, cellulose ether: 0.58%, starch ether: 0.07%, air-entraining agent: 0.015%. The performance results obtained from the sampling test at the construction site are shown in Table 2.

[0030] Table 2 Performance Test Results of Inorganic Thermal Insulation Mortar in Example 1

[0031] project performance results Dry apparent density (kg / m 3 ) 235 Thermal conductivity (W / m·K) 0.057 Compressive strength (MPa) 0.32 Linear shrinkage (%) 0.23 Tensile bond strength (MPa) 0.12 Compressive shear bond strength (kPa) 75 Softening coefficient 0.73

Embodiment 2

[0032] Example 2: Inorganic thermal insulation mortar with a thermal conductivity of 0.060~0.070W / m.K, its components and proportions (percentage by weight) are: cement: 41.5%, fly ash: 9.6%, slaked lime: 5.2%, vitrified microbeads : 42.14%, PP fiber: 0.16%, redispersible latex powder: 0.95%, cellulose ether: 0.38%, starch ether: 0.06%, air-entraining agent: 0.012%. The performance results obtained from the sampling test at the construction site are shown in Table 3.

[0033] Table 3 Performance Test Results of Inorganic Thermal Insulation Mortar of Example 2

[0034] project performance results Dry apparent density (kg / m 3 ) 255 Thermal conductivity (W / m·K) 0.065 Compressive strength (MPa) 0.47 Linear shrinkage (%) 0.21 Tensile bond strength (MPa) 0.13 Compressive shear bond strength (kPa) 79 Softening coefficient 0.74

Embodiment 3

[0035] Example 3: Inorganic thermal insulation mortar with a thermal conductivity of 0.070~0.080W / m.K, its components and proportions (percentage by weight) are: cement: 42.6%, fly ash: 8.6%, slaked lime: 7.2%, vitrified microbeads : 40.26%, PP fiber: 0.124%, redispersible latex powder: 0.78%, cellulose ether: 0.38%, starch ether: 0.048%, air-entraining agent: 0.008%. The performance results obtained from the sampling test at the construction site are shown in Table 4.

[0036] Table 4 The performance test results of the inorganic thermal insulation mortar of Example 3

[0037] project performance results Dry apparent density (kg / m 3 ) 293 Thermal conductivity (W / m·K) 0.076 Compressive strength (MPa) 0.61 Linear shrinkage (%) 0.22 Tensile bond strength (MPa) 0.15 Compressive shear bond strength (kPa) 102 Softening coefficient 0.76

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Abstract

The invention relates to inorganic insulating mortar for building energy conservation and its preparation method. The inorganic insulating mortar comprises the following components by weight: 35%-50% of ordinary portland cement, 5%-10% of fly ash, 5%-10% of hydrated lime, 35%-50% of vitrified micro-beads, 0.1%-0.2% of PP (polypropylene) fiber, 0.5%-1.2% of redispersible emulsion powder, 0.2%-0.6% of cellulose ether, 0.03%-0.07% of starch ether, and 0%-0.02% of an air-entraining agent. The thermal conduction coefficient of the inorganic insulating mortar can be adjusted within the grade range of 0.050W / m.K to 0.090W / m.K according to needs. The inorganic insulating mortar of the invention is monocomponent dry-mixed mortar uniformly mixed by lightweight aggregate and powder materials, and not only solves the problems of poor transportation storage stability and easy segregation in this kind of products, but also has the characteristics of excellent construction performance, bonding property, high strength, incombustibility and fire prevention, thermal insulation performance, hollowing and cracking avoidance, as well as low economic cost, etc.

Description

technical field [0001] The invention belongs to the technical field of building materials, and also relates to the technical field of building energy conservation, and specifically relates to an inorganic thermal insulation mortar compounded by inorganic light aggregates, cementitious materials, chemical additives, etc. Preparation. Background technique [0002] Building an energy-saving society is an important measure for sustainable development. Building energy consumption accounts for 30% of my country's total energy consumption. Therefore, implementing building energy conservation is an important part of building an energy-saving society. my country's new construction area reaches 2 billion m 2 / year, the existing construction area reaches 40 billion m 2 , most of these buildings are high-energy-consuming buildings, which require building energy-saving construction and renovation. In building energy consumption, the energy lost through building exterior walls is as hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10
Inventor 王培铭张国防张永明
Owner TONGJI UNIV
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