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A phase-change energy storage dry powder mortar based on construction and domestic waste and its preparation method

A technology for domestic waste and phase change energy storage, applied in the field of building materials, can solve the problems of low usability and limited economic value of construction waste, achieve good anti-leakage and thermal insulation properties, improve heat storage and thermal insulation capabilities, and prepare The effect of the simple method

Active Publication Date: 2018-10-26
广州市盈坚建材科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above prior art that at present, construction waste is simply crushed and used as a filling material, which is not very usable for construction waste and has limited economic value.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) The construction waste concrete and rubber were crushed, ground and sieved to obtain concrete powder with a particle size of 2 mm and rubber powder with a particle size of 0.1 mm, and the straw was dried and incinerated to obtain straw ash.

[0026] (2) In parts by weight, cut 15 parts of paraffin into paraffin powder, mix with 20 parts of rubber powder and 30 parts of concrete powder, place in a reaction kettle, heat at 60°C for 10 minutes, and evacuate to -0.2MPa , let it stand for 30 minutes, cool down, immerse in 5 parts of water glass adhesive, stir at 500rpm for 1h until uniform, then add 20 parts of straw ash, adjust the pH value to 5, stir at 500rpm for 1h until uniform, and dry at 40°C. Pulverize to obtain phase change composite material.

[0027] (3) In parts by weight, the apparent density of 5 parts of phase change composite material and 50 parts of Portland cement and 30 parts is 1500kg / m 3 The construction recycled sand, 1 part of water reducer and 3 ...

Embodiment 2

[0029] (1) The construction waste concrete and rubber were crushed, ground and sieved to obtain concrete powder with a particle size of 5 mm and rubber powder with a particle size of 1 mm, and the straw was dried and incinerated to obtain straw ash.

[0030] (2) In parts by weight, cut 30 parts of paraffin into paraffin powder, mix with 40 parts of rubber powder and 60 parts of concrete powder, place in a reaction kettle, heat at 65°C for 20min, and evacuate to -0.5MPa , let it stand for 60 minutes, cool down, immerse in 15 parts of water glass adhesive, stir at 700 rpm for 2 hours until uniform, then add 30 parts of straw ash, adjust the pH value to 6, stir at 700 rpm for 2 hours until uniform, and dry at 50 ° C. Pulverize to obtain phase change composite material.

[0031] (3) In parts by weight, the apparent density of 20 parts of phase change composite material and 60 parts of Portland cement and 40 parts is 1500kg / m 3 The construction recycled sand, 3 parts of water redu...

Embodiment 3

[0033] (1) The construction waste concrete and rubber were crushed, ground and sieved to obtain concrete powder with a particle size of 3 mm and rubber powder with a particle size of 0.5 mm, and the straw was dried and incinerated to obtain straw ash.

[0034] (2) In parts by weight, cut 20 parts of paraffin into paraffin powder, mix with 30 parts of rubber powder and 40 parts of concrete powder, place in a reaction kettle, heat at 62°C for 15 minutes, and evacuate to -0.3MPa , let it stand for 40 minutes, cool down, immerse in 10 parts of water glass adhesive, stir at 600rpm for 1.5h until uniform, then add 25 parts of straw ash, adjust the pH value to 5.5, stir at 600rpm for 1.5h until uniform, bake at 45°C Dry and pulverize to obtain a phase change composite material.

[0035] (3) In parts by weight, the apparent density of 10 parts of phase change composite material and 55 parts of Portland cement and 35 parts is 1500kg / m 3 The construction recycled sand, 2 parts of water...

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Abstract

The invention provides a phase-change energy storage dry power mortar based on construction and household garbage and a preparation method thereof. The preparation method comprises the following steps: smashing the construction garbage concrete and rubber, respectively, and performing grinding and filtering to obtain powder; drying straw and performing incinerating to obtain straw ash; cutting paraffin into paraffin powder, mixing the paraffin powder with the rubber and concrete powder and, heating the mixed powder in a reactor, performing vacuumizing, allowing the vacuumized material to stand and performing cooling; immerging the cooled material into a water glass adhesive, performing stirring and adding the straw powder, and performing stirring, drying and smashing to obtain a phase change composite material; and mixing the phase change composite material with portland cement, construction recycling sand, a water reducer and cellulose ether uniformly to obtain the phase change energy storage dry powder mortar based on the construction and household garbage. The method improves the garbage functionality by using a simple method, and has the advantages of good economic performance, greenness and environmental protection. The obtained dry power mortar meets the using requirement.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a phase-change energy storage dry powder mortar based on construction and domestic waste and a preparation method thereof. Background technique [0002] Construction waste refers to solid waste generated during building construction, repair and demolition, including discarded concrete, mortar, time, broken bricks, metal and wood, etc. The amount of construction waste is very large. If it is not handled in time, it will cause environmental pollution and damage the ecological environment, which is not in line with the green and circular economy. At present, non-concrete and waste brick slag in construction waste can be processed to form recycled aggregate, which can be used in road engineering as a foundation pad, as raw materials for bricks and other building materials, or to replace natural sand and gravel to prepare concrete and mortar. [0003] Chinese patent CN 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B24/08
CPCC04B28/04C04B40/0039C04B2111/00017C04B2201/32C04B2201/50C04B18/167C04B2103/302C04B24/383C04B18/22C04B18/101C04B24/08
Inventor 王文庆
Owner 广州市盈坚建材科技发展有限公司
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