Light-weight heat-insulating concrete and preparation method thereof

A lightweight thermal insulation and concrete technology, applied in the field of building materials, can solve the problems that the performance of all-light concrete cannot meet the engineering requirements, the construction process of the thermal insulation layer is complicated, etc., so as to save the construction period, improve the thermal insulation performance, and simplify the thermal insulation structure. Effect

Active Publication Date: 2014-02-26
珠海采筑电子商务有限公司
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a light-weight heat-insulating concrete and its preparation method in view of the complex process of the above-mentioned building heat-insulating layer and the problems that the performance of the light-weight concrete cannot meet the engineering requirements

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  • Light-weight heat-insulating concrete and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Configure lightweight heat-insulating concrete with a bulk density of 1200

[0024] According to the total mass of each component in the lightweight heat-insulating concrete per cubic meter is 1200Kg, respectively take 350kg of cement, 12kg of microsilica fume, 32kg of fly ash, 172kg of sand, 220kg of pottery sand, 274kg of ceramsite, 5kg of admixture, and 135kg of water , Pour it into the mixer and mix for 2-4 minutes to make lightweight heat-insulating concrete. After the lightweight heat-insulating concrete is hardened, its strength grade is C15, its thermal conductivity is 0.2W / (m·K), and its heat storage coefficient is 4.5W / (m 2 · K).

Embodiment 2

[0025] Example 2: Configure lightweight heat-insulating concrete with a bulk density of 1350

[0026] According to the total weight of each component in each cubic meter of lightweight heat-insulating concrete is 1350Kg, respectively take 386kg of cement, 14kg of microsilica fume, 38kg of fly ash, 174kg of sand, 245kg of pottery sand, 353kg of ceramsite, 5kg of admixture, and 135kg of water , Pour it into the mixer and mix for 2-4 minutes to make lightweight heat-insulating concrete. After the lightweight heat-insulating concrete is hardened, its strength grade is C25, its thermal conductivity is 0.4W / (m·K), and its heat storage coefficient is 5.5W / (m 2 · K).

Embodiment 3

[0027] Example 3: Configure lightweight heat-insulating concrete with a bulk density of 1500

[0028] According to the total weight of each component in each cubic meter of lightweight heat-insulating concrete is 1500Kg, respectively take 410kg of cement, 30kg of microsilica fume, 50kg of fly ash, 220kg of sand, 300kg of pottery sand, 335kg of ceramsite, 10kg of admixture, and 145kg of water , Pour it into the mixer and mix for 2-4 minutes to make lightweight heat-insulating concrete. After hardening, the lightweight heat-insulating concrete has a strength grade of C30, a thermal conductivity of 0.45W / (m·K), and a heat storage coefficient of 6.5 W / (m 2 · K).

[0029] The above-mentioned lightweight heat-insulating concrete fully meets the engineering requirements of ordinary buildings, and its performance parameters compared with existing conventional building materials are shown in Table 2:

[0030] name DensityKg / m 3 Thermal conductivity W / (m.K) Heat storage...

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Abstract

The invention provides light-weight heat-insulating concrete. One cubic meter of the concrete is prepared by uniformly stirring following raw materials: 350-410 kg of cement, 12-30 kg of micro silicon powder, 32-50 kg of coal ash, 172-220 kg of sand, 220-300 kg of ceramic sand, 274-335 kg of haydite, 5-10 kg of additives and 135-145 kg of water. The invention also provides a preparation method of the light-weight heat-insulating concrete. By utilization of the haydite and a cementing formula, the concrete has good thermal insulation performances itself. The concrete can be used as building outer walls so as to cancel an independent thermal insulation layer, thus simplifying thermal insulation structures of the building outer walls, shortening the project duration, and reducing the cost.

Description

technical field [0001] The invention relates to the field of building materials, more specifically, to a lightweight heat-insulating concrete and a preparation method thereof. Background technique [0002] In existing buildings, a separate insulation layer composed of insulation mortar or XPS, EPS, rock wool and other insulation materials is usually used inside or outside the wall to achieve heat insulation. For example, prefabricated walls generally use insulation materials such XPS, EPS and other materials are placed in the middle of the wall or thermal insulation materials are placed at the formwork, and are produced by reverse punching process. However, the above-mentioned wall insulation structure process is relatively complicated, there are many types of supporting materials, and the construction requirements are high. Moreover, the fire performance of some insulation materials cannot meet the requirements of Class A, and the entire insulation system is affected by ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
Inventor 李金伟
Owner 珠海采筑电子商务有限公司
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