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Anti-cracking heat-insulating recycled aggregate mortar and preparation method thereof

A technology of recycled aggregate and recycled fine aggregate, which is applied in the field of recycled aggregate mortar, can solve the problems of increasing the cost of mortar preparation, and achieve the effects of being beneficial to environmental protection, reducing thermal conductivity, and good hydrophobicity

Active Publication Date: 2018-01-23
绍兴职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plastering mortar of the present invention has good workability, high bonding strength, and good thermal performance, and is more suitable for building exterior wall insulation systems from the perspectives of durability, fire resistance, and environmental protection, but it uses a large amount of vitrified Microbeads are used as insulation material, which greatly increases the preparation cost of mortar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A crack-resistant and heat-preserving recycled aggregate mortar, in parts by weight, comprises the following components:

[0032] 15 parts of cement, 2 parts of fly ash, 8 parts of rubber powder,

[0033] 3 parts of bamboo fiber, 8 parts of heavy calcium carbonate, 30 parts of recycled fine aggregate,

[0034] 2 parts of redispersible latex powder, 0.01 part of silicone resin solution,

[0035] 0.1 part of water retaining agent, 0.1 part of antifreeze, 0.1 part of pigment;

[0036] Its preparation method comprises the following steps:

[0037] (1) Prepare a solvent by mixing absolute ethanol and deionized water, add dropwise a mixture of hexamethyldisiloxane and triethoxyethylsilane to the solvent under a nitrogen atmosphere, after the dropwise addition, stir and mix evenly, Prepare the reaction system, adjust the pH of the reaction system to 2-3 with hydrochloric acid, react at 30-50°C for 1h, then slowly raise the temperature to 65-75°C, react for 3h, cool to room ...

Embodiment 2

[0043] A crack-resistant and heat-preserving recycled aggregate mortar, in parts by weight, comprises the following components:

[0044] 22 parts of cement, 3 parts of fly ash, 10 parts of rubber powder,

[0045] 5 parts of bamboo fiber, 16 parts of heavy calcium carbonate, 50 parts of recycled fine aggregate,

[0046] 3 parts of redispersible latex powder, 0.04 part of silicone resin solution,

[0047] 0.2 parts of water-retaining agent, 0.5 parts of antifreeze, 5 parts of pigment;

[0048] Its preparation method comprises the following steps:

[0049](1) Prepare a solvent by mixing absolute ethanol and deionized water, add dropwise a mixture of hexamethyldisiloxane and triethoxyethylsilane to the solvent under a nitrogen atmosphere, after the dropwise addition, stir and mix evenly, Prepare the reaction system, adjust the pH of the reaction system to 2-3 with hydrochloric acid, react at 30-50°C for 1h, then slowly raise the temperature to 65-75°C, react for 3h, cool to roo...

Embodiment 3

[0055] A crack-resistant and heat-preserving recycled aggregate mortar, in parts by weight, comprises the following components:

[0056] 17 parts of cement, 2.2 parts of fly ash, 8.5 parts of rubber powder,

[0057] 3.5 parts of bamboo fiber, 10 parts of heavy calcium carbonate, 35 parts of recycled fine aggregate,

[0058] 2.2 parts of redispersible latex powder, 0.02 parts of silicone resin solution,

[0059] 0.13 parts of water retaining agent, 0.2 parts of antifreeze, 1 part of pigment;

[0060] Its preparation method comprises the following steps:

[0061] (1) Prepare a solvent by mixing absolute ethanol and deionized water, add dropwise a mixture of hexamethyldisiloxane and triethoxyethylsilane to the solvent under a nitrogen atmosphere, after the dropwise addition, stir and mix evenly, Prepare the reaction system, adjust the pH of the reaction system to 2-3 with hydrochloric acid, react at 30-50°C for 1h, then slowly raise the temperature to 65-75°C, react for 3h, co...

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PUM

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Abstract

The invention provides anti-cracking heat-insulating recycled aggregate mortar. The anti-cracking heat-insulating recycled aggregate mortar comprises the following components in parts by weight: 15 to22 parts of cement, 2 to 3 parts of coal ash, 8 to 10 parts of rubber powder, 3 to 5 parts of bamboo fiber, 8 to 16 parts of heavy calcium carbonate, 30 to 50 parts of recycled fine aggregate, 2 to 3parts of re-dispersible latex powder, 0.01 to 0.04 part of an organosilicone resin solution, 0.1 to 0.2 part of a water-retaining agent, 0.1 to 0.5 part of an anti-freezing agent and 0.1 to 5 parts of pigment. The invention further discloses a preparation method of the mortar. The recycled aggregate mortar provided by the invention has high anti-cracking property, high heat-insulating property and low preparation cost.

Description

Technical field: [0001] The invention relates to a recycled aggregate mortar, in particular to a crack-resistant and heat-preserving recycled aggregate mortar. Background technique: [0002] At present, the treatment methods for most construction wastes are generally simple landfill or direct open-air stacking, which has caused serious damage to the ecological environment, and the recycling of construction waste is becoming increasingly urgent. Compared with traditional mortar, dry powder mortar has better stability and better performance, which can effectively improve the quality of construction projects and reduce environmental pollution. However, the cost of dry mix mortar is still high at present, how to reduce the cost of dry mix mortar is an inevitable trend of sustainable development. The use of construction waste to produce recycled aggregates and the use of recycled aggregates to produce dry-mix mortar can effectively utilize construction waste and reduce the cost ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/22C04B24/42C04B16/02C04B111/34
CPCY02W30/91
Inventor 金奇亮汤薇孙秋砚唐静孔爱散
Owner 绍兴职业技术学院
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