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Nano-additive agent modified high-strength wall self-thermal insulation material and preparing method thereof

A nano-additive and self-insulation technology, applied in the field of construction, can solve the problems of low strength, low compressive strength, and inability to self-insulate the wall, and achieve the effect of reducing thermal conductivity and high compressive strength

Inactive Publication Date: 2008-12-10
浙江中联建设集团有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a serious problem in the existing inventions of nano-insulation materials - the compressive strength is low, generally not exceeding 2MPa, and it cannot be used as a self-insulation material for building walls
[0012] The above discussion shows that with the implementation of the national energy-saving and environmental protection policy, the existing wall insulation materials can no longer meet the requirements of building energy-saving development due to low strength, poor thermal insulation performance, and poor flame retardancy. Excellent performance, but due to its high brittleness and low strength, it cannot be used as a wall self-insulation material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Weigh each raw material according to the following parts by mass: 100kg of ordinary Portland cement, 1.1kg of quicklime, 2.0kg of gypsum, 140kg of nano-silicon dioxide, 25kg of fly ash, after mixing evenly, add 0.5kg of water reducing agent, 35kg of water, Stir evenly, use the traditional brick-making process to shape, and naturally maintain it.

[0046] The insulation brick prepared in this example is detected, and its bulk density is 0.95g / cm 3 , the thermal conductivity is 0.14w / m.k, and the compressive strength is 14.03Mpa.

Embodiment 2

[0048] Weigh each raw material according to the following parts by mass: 150kg of aluminate cement, 1.3kg of quicklime, 2.8kg of gypsum, 180kg of nano-alumina, 40kg of blast furnace slag, after mixing evenly, add 0.7kg of water reducing agent, 25kg of water, stir evenly, It is shaped by traditional brick-making techniques and can be obtained through natural maintenance.

[0049] The insulation brick prepared in this example is detected, and its bulk density is 0.98g / cm 3 , the thermal conductivity is 0.16w / m.k, and the compressive strength is 10.28Mpa.

Embodiment 3

[0051] Weigh each raw material by the following parts by mass: 200kg of alkali slag cement, 2kg of quicklime, 1.2kg of gypsum, 180kg of nano silicon dioxide, 50kg of rice husk ash, after mixing evenly, add 0.8kg of waterproofing agent, 35kg of water, stir evenly, The wall is poured on site under the support of the mold, and it can be cured naturally.

[0052] The thermal insulation wall prepared in this embodiment is tested, and its bulk density is 1.07g / cm 3 , the thermal conductivity is 0.19w / m.k, and the compressive strength is 11.81Mpa.

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Abstract

The invention discloses a nano additive modified high strength wall self heat preservation brick and a preparation method thereof. The method comprises the following steps: according to mass portion, 1 to 20 portions of bonding agent, 0.1 to 5 portions of admixture and 0.5 to 5 portions of nano additive are evenly mixed and added with admixtures, the weight of which is 0.001 to 0.1 times against the weight of the mixture, and evenly mixed again; and the mixture obtained is added with water and shaped. For the wall self heat preservation brick prepared by the method of the invention, the pressive strength is between 5 and 14MPa, the coefficient of thermal conductivity is between 0.1 and 0.2w / m.k, so that the brick is a highly efficient energy saving building material with superior performance.

Description

technical field [0001] The invention relates to high-efficiency energy-saving materials in the field of construction, in particular to a high-strength wall self-insulation material and a preparation method thereof. Background technique [0002] Building energy consumption accounts for a large proportion of the total energy consumption of the national economy. In order to achieve the strategic goal of building energy saving of 65% in the third step, my country officially implemented the "Code for Construction Quality Acceptance of Building Energy Saving Engineering" on October 1, 2007. . Building energy saving is a comprehensive system engineering, and its focus is on the energy saving of the building envelope, and the outer wall accounts for the largest proportion in the building envelope, and the heat lost by it accounts for about 30% of the heat dissipation of the building envelope, so how to It is very important to improve the thermal insulation performance of the exterio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/08C04B14/04C04B22/06
CPCC04B28/14C04B2111/00008C04B2111/28C04B2201/32C04B2201/50Y02P40/10Y02W30/91C04B7/02C04B7/1535C04B7/32C04B7/323C04B14/042C04B14/047C04B14/06C04B14/08C04B14/102C04B14/202C04B14/303C04B14/305C04B14/308C04B18/08C04B18/141C04B18/248C04B20/008C04B22/064C04B2103/22C04B2103/302C04B2103/65C04B18/146
Inventor 金承黎沈立青董淼军
Owner 浙江中联建设集团有限公司
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