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Self-insulation composite concrete self-supporting building block

A technology of concrete and self-insulation, applied in the direction of building materials, etc., can solve the problems of masonry mechanical strength and anti-seismic ability weakened, unsatisfactory, unable to meet thermal insulation and energy saving, achieve material performance and masonry anti-seismic ability, improve Block heat transfer resistance, improve the effect of self-insulation performance

Active Publication Date: 2013-09-04
永格(福建)建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method does not completely solve the problem of thermal bridge heat transfer at the ribs of the blocks, so the heat insulation effect of the wall made of such blocks has not been effectively improved, and it cannot meet the requirements of heat insulation and energy saving in the cold northern regions. and anti-condensation requirements, nor can it meet the continuously improving thermal insulation and energy-saving requirements in the south
Although the second method solves the problem of thermal bridge heat transfer at the ribs of the block through the bridge breaking measure, the overall mechanical strength and earthquake resistance of the masonry are greatly weakened, so it is not ideal

Method used

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  • Self-insulation composite concrete self-supporting building block
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  • Self-insulation composite concrete self-supporting building block

Examples

Experimental program
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Effect test

example 1

[0038] Located in a severe cold area, the limit value of the heat transfer coefficient of a project's exterior wall is K≤0.4 , The block is selected according to one of the local common specifications 390mm*240mm*190mm, and the thermal conductivity of the filling in the block cavity is 0.02 High-efficiency foamed polyurethane insulation material. According to the above conditions, the maximum thermal conductivity of the lightweight aggregate concrete used to make the block rib 2 is calculated by the formula (2). is 0.3339 .

[0039] Therefore the lightweight aggregate concrete of block rib 2 is by cement 320Kg, gravel 820Kg, the expanded polystyrene particle 16Kg of extrusion molding, water is in right amount, air-entraining agent 0.32Kg, water reducer 0.2Kg preparation. Using a thermal conductivity meter to detect, the average value of the measured thermal conductivity of the lightweight aggregate concrete with the above ratio ' is 0.33 .

[0040] Ordinary concret...

example 2

[0043] Located in a cold area, the limit value of the heat transfer coefficient of the external wall of a project is K≤0.4 , The block is selected according to one of the local common specifications 390mm*290mm*190mm, and the thermal conductivity of the filling in the block cavity is 0.04 rock wool insulation material. According to the above conditions, the maximum thermal conductivity of the lightweight aggregate concrete used to make the block rib 2 is calculated by the formula (2). is 0.371 .

[0044] Therefore, the lightweight aggregate concrete of the block rib 2 is prepared by 320Kg of cement, 910Kg of gravel, 14Kg of foamed polyurethane particles, an appropriate amount of water, 0.32Kg of air-entraining agent, and 0.2Kg of water reducing agent. Using a thermal conductivity meter to detect, the average value of the measured thermal conductivity of the lightweight aggregate concrete with the above ratio ' is 0.36 .

[0045] Ordinary concrete is used as the mat...

example 3

[0048] Located in a cold area, the limit value of the heat transfer coefficient of an external wall of a project is K≤0.5 , The block is selected according to one of the local common specifications 390mm*240mm*190mm, and the thermal conductivity of the filling in the block cavity is 0.02 High-efficiency foamed polyurethane insulation material. According to the above conditions, the maximum thermal conductivity of the lightweight aggregate concrete used to make the block rib 2 is calculated by the formula (2). is 0.461 .

[0049] Therefore, the lightweight aggregate concrete of the block rib 2 is prepared by 320Kg of cement, 1000Kg of gravel, 13Kg of foamed polyurethane particles, an appropriate amount of water, 0.3Kg of air-entraining agent, and 0.2Kg of water reducing agent. Using a thermal conductivity meter to detect, the average value of the measured thermal conductivity of the lightweight aggregate concrete with the above ratio ' is 0.46 .

[0050] Ordinary co...

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Abstract

The invention provides a self-insulation composite concrete self-supporting building block. The building block is characterized in that: the building block comprises a pair of building block walls respectively positioned on the inner side and the outer side, a pair of building block ribs respectively positioned on the left side edge and the right side edge of the two building block walls, and a high-efficiency heat-insulating material filled in a hollow chamber formed by the building block walls and the building block ribs; the building block walls and the building block ribs are produced from two different concrete materials, wherein the thermal conductivity lambda L' of the concrete material used for producing the building block ribs is smaller than the thermal conductivity of the concrete material used for producing the building block walls. With the building block provided by the invention, thermal transmission capacity of building block rib thermal bridges can be weakened, self-insulation capacity of the building block can be improved, and various material performances of common concrete and shock resistance of the building block can be reserved.

Description

technical field [0001] The invention relates to a self-supporting self-supporting block of self-insulating composite concrete. Background technique [0002] Concrete block is a commonly used masonry material. How to ensure that the material properties of concrete blocks meet the requirements of building codes and improve the thermal insulation performance of concrete blocks is the direction of joint efforts of the construction industry. A commonly used method is to fill the holes of the blocks with insulation materials to improve the thermal insulation performance of the masonry. Another method is to cancel the block ribs and use a high-efficiency insulation layer in the middle of the block wall as a block. The first method does not completely solve the problem of thermal bridge heat transfer at the ribs of the blocks, so the heat insulation effect of the wall made of such blocks has not been effectively improved, and it cannot meet the requirements of heat insulation and en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C1/41
Inventor 刘宝祺刘龙
Owner 永格(福建)建筑科技有限公司
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