Light fireproof thermal insulating mortar with cement base

A fire-proof and thermal insulation mortar, cement-based technology, applied in the field of building materials, can solve the problems of old building renovation materials, high requirements for construction supporting materials, and affecting user safety, etc., to prevent fire from spreading, good cohesion, easy The effect of construction

Inactive Publication Date: 2005-01-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing thermal insulation materials, such as polystyrene foam, have light weight and good thermal insulation effects, but they are not fireproof and flammable, which affects the safety of users. In additi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1, the cement-based lightweight fire-resistant thermal insulation mortar is based on 59.52% of ordinary Portland cement (mass percentage, the same below), fly ash 8.33%, expanded perlite 32.14662%, cellulose 0.00298%, dodecyl benzene sulfonate It is formulated with sodium 0.0004%. The loose bulk density of the prepared product is 335kg / m 3 , After adding 110% of the dry powder material and stirring, the product can be constructed, the apparent density after hardening is 420kg / m 3 , 28d compressive strength is 0.5MPa, bond tensile strength is 0.35MPa, thermal conductivity is 0.082W / m.K.

Embodiment 2

[0023] Example 2, the cement-based lightweight fire-resistant thermal insulation mortar is prepared by using ordinary Portland cement 57.80%, fly ash 9.25%, expanded perlite 32.94607%, cellulose 0.00347%, and sodium dodecylbenzene sulfonate 0.00046% . The loose bulk density of the prepared product is 323kg / m 3 , After adding 115% of the dry powder material and stirring, the product can be constructed, and the apparent density after hardening is 414kg / m 3 , 28d compressive strength is 0.4MPa, bond tensile strength is 0.30MPa, thermal conductivity is 0.075W / m.K.

Embodiment 3

[0024] Example 3, the cement-based lightweight fire-retardant thermal insulation mortar is prepared by 54.62% ordinary Portland cement, 15.25% fly ash, 30.12593% expanded perlite, 0.00327% cellulose, and 0.0008% sodium dodecylbenzene sulfonate . The loose bulk density of the prepared product is 342kg / m 3 , After adding 125% of the dry powder material and stirring, the product can be constructed, and the apparent density after hardening is 404kg / m 3 , 28d compressive strength is 0.45MPa, bond tensile strength is 0.32MPa, thermal conductivity is 0.080W / m.K.

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Abstract

The invention relates to a cement-based light fireproof heat-preserving mortar, composed of ordinary portland cement, powder coal ashes, expanded perlite, fibrin, and sodium lauryl benzene sulfonate. It can efficiently construct thermal insulating layers on wall surfaces and top surfaces of buildings, thus improving the heat-preserving and -insulating property of buildings, reducing the energy consumption for heating in the northern winter and temperature drop in the southern summer. It has characters of low density, high temperature resistance, incombustibility, good fire resistance, and use safety. It is applied to the construction of thermal insulating layers of walls and roofs of reinforced concrete, concrete, clay brick, metal, etc, and also applied to the construction of thermal insulating layers of bathrooms, basements, refrigeratories, etc.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a cement-based lightweight fireproof and thermal insulation mortar. Background technique [0002] Population explosion, lack of resources and environmental degradation are the main problems facing people at present, which will lead to a significant warming of the global climate. [0003] In the past, due to the weak overall national strength of our country, the design and construction of buildings have always followed the principle of “being simple and simple, satisfying practicability”. Therefore, existing old buildings mostly use solid clay bricks and concrete as enclosure materials (wall and concrete). The top surface), the reason is that they can both bear weight and act as an enclosure material. However, these traditional enclosure materials have poor thermal insulation properties. The northern regions are cold in winter, and heating facilities must be used ...

Claims

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Application Information

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IPC IPC(8): C04B14/18C04B16/02C04B18/08C04B24/20C04B28/04
CPCY02W30/91
Inventor 孙振平蒋正武
Owner TONGJI UNIV
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