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Anti-cracking and anti-permeability lightweight aggregate insulating concrete

A technology of thermal insulation concrete and lightweight aggregate, applied in the field of building materials, can solve the problems of insufficient thermal insulation performance of finished products, different quality of extruded plastic boards, low overall strength and wear resistance, etc. The effect of strengthening pumping and compressive strength and reducing construction costs

Inactive Publication Date: 2013-04-24
廖传海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although extruded board is cheap and is the most widely used product for roof insulation at the present stage, and has good thermal insulation performance, the quality of extruded boards in the market now varies, and the phenomenon of shoddy products is serious, and there is no fireproof performance. Inferior and low-priced extruded boards are still the mainstream in the market, and the price of good quality is relatively high; and because the extruded boards are laid on the roof piece by piece and are not pasted together with the base layer, they are easy to separate from the cement mortar leveling layer and the base layer. After the leveling layer cracks, water enters the base layer, causing the extruded board to soak in the water, reducing the thermal insulation effect, and also causing hidden dangers in waterproofing
Polyurethane spraying has good thermal insulation performance, but the general price is high, and it pollutes the environment greatly, and the smell is strong, so that the overall cost of the roof is high.
Occasionally, polystyrene particle insulation mortar is used on the roof, but due to the difficulty of construction and high cost, the amount used is very small
Foam concrete insulation and slope finding, although it has great advantages in terms of heat preservation, slope finding and price, but due to the quality of construction machinery and technical problems of construction personnel, and the production method of 100% cement plus foaming agent used in the current construction, the finished product is in the The thermal insulation performance is not stable enough, there are many limitations in the construction, the overall strength and wear resistance are still low, and it is easy to crack

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: This example describes the preparation and construction of an anti-seepage and anti-crack lightweight aggregate thermal insulation concrete.

[0016] The first part, the preparation of powder: add 600 kg of Portland cement, 300 kg of quartz sand, 50 kg of nano-silica fume, 40 kg of fly ash or slag powder, 100 kg of sepiolite, 28 Kg of waterproof dispersible latex powder, 4.2 kg of early strength agent (commercially available), 20 kg of osmotic crystallization active masterbatch, 12 kg of durafiber, 50 kg of powder acrylic milk cement modifier, add dry blender and mix Then made into dry powder.

[0017] In the second part, through the foaming machine, add 2kg of gelling liquid per cubic meter, inflate with water to make viscous foam, mix the dry powder and viscous foam evenly, and pump it to the construction site through pumping equipment, use an aluminum alloy ruler according to the design Construction requires smoothing.

Embodiment 2

[0018] Example 2: This example describes the preparation and construction of an anti-seepage and anti-crack lightweight aggregate thermal insulation concrete.

[0019] The first part, the preparation of powder: add 550 kg of Portland cement, 340 kg of quartz sand, 65 kg of nano silica fume, 50 kg of fly ash or slag powder, 100 kg of sepiolite, 27 Kg of waterproof dispersible latex powder, 3.85 kg of early strength agent (commercially available), 9 kg of osmotic crystallization active masterbatch, 10 kg of durafiber, 35 kg of powder acrylic milk cement modifier, add dry blender and mix Then made into dry powder.

[0020] In the second part, through the foaming machine, add 2kg of gelling liquid per cubic meter, inflate with water to make viscous foam, mix the dry powder and viscous foam evenly, and pump it to the construction site through pumping equipment, use an aluminum alloy ruler according to the design Construction requires smoothing.

Embodiment 3

[0021] Example 3: This example describes the preparation and construction of an anti-seepage and anti-crack lightweight aggregate thermal insulation concrete.

[0022] The first part, the preparation of powder: add 520 kg of Portland cement, 480 kg of quartz sand, 55 kg of nano silica fume, 80 kg of fly ash or slag powder, 100 kg of sepiolite, 25 kg Kg of waterproof dispersible latex powder, 3.64 kg of early strength agent (commercially available), 10 kg of osmotic crystallization active masterbatch, 9 kg of durafiber, 32 kg of powder acrylic milk cement modifier, add dry blender and mix Then made into dry powder.

[0023] In the second part, through the foaming machine, add 2kg of gelling liquid per cubic meter, inflate with water to make viscous foam, mix the dry powder and viscous foam evenly, and pump it to the construction site through pumping equipment, use an aluminum alloy ruler according to the design Construction requires smoothing.

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PUM

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Abstract

The invention relates to anti-cracking and anti-permeability lightweight aggregate insulating concrete, which is suitable for slope making layers of roofs and padding of toilets, swimming pools and road beds and belongs to the building material field. The anti-cracking and anti-permeability lightweight aggregate insulating concrete comprises the following raw materials in parts by weight: 50-60 parts of cement, 30-50 parts of quartz sand, 5-9 parts of nano silica fume, 3.5-9 parts of flyash or slag powder, 10 parts of sepiolite, 2.5-3 parts of waterproof dispersible latex powder, 0.75-3.6 parts of capillary crystalline active master batch, 0.9-1.5 parts of Dura fiber and 2.5-6 parts of powder acrylic-emulsion cement modifier. The anti-cracking and anti-permeability lightweight aggregate insulating concrete in the invention has the advantages of reasonable formula design, cracking and permeability resistance, thermal insulation, pumping support, stable quality, energy conservation, waste utilization, no limitation to temperature and weather, excellent performance and simple construction procedure.

Description

technical field [0001] The invention relates to an anti-seepage and anti-crack lightweight aggregate thermal insulation concrete, which is suitable for slope finding and thermal insulation of roofs, filling of toilets, swimming pools and roadbeds, and belongs to the field of building materials. Background technique [0002] At present, the insulation materials used on the roof include extruded board, polyurethane spraying, foam concrete, cinder, expanded perlite, foam glass scraps and polystyrene particle insulation mortar for the wall. Among them, cinder, expanded perlite, and foam glass scraps are loose materials with high water absorption rate, and vent holes must be installed, which will damage the waterproof layer after water absorption, and have poor thermal insulation performance after water intake, so they are nationally eliminated products. Although extruded board is cheap and is the most widely used product for roof insulation at the present stage, and has good the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00
Inventor 廖传海
Owner 廖传海
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