High-modulus permeable environment-friendly mortar used for sponge city and produced by utilizing construction waste and preparation method thereof

A construction waste and sponge city technology, which is applied in the field of building materials, can solve the problems such as the rare application of permeable pavements, and achieve the effects of stabilizing mechanical properties and uniformity, improving bending strength, and improving modulus of elasticity

Active Publication Date: 2017-08-11
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

It can be seen from the above existing technologies that the application of machine-made sand has been gradually applied to various concretes, but its application in permeable pavement is rare

Method used

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  • High-modulus permeable environment-friendly mortar used for sponge city and produced by utilizing construction waste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Artificially crush waste bricks and waste concrete from construction waste, and sieve them into two ranges of 15-20mm and 20-30mm, wash and dry to form recycled aggregates, and soak the recycled aggregates in sodium aluminosilicate solution for 2 hours , take it out and dry it in the air, heat and activate it at 500°C for 2 hours to obtain the regenerative active construction waste aggregate.

[0027] (2) Sandstone, granite and limestone with a mass ratio of 1:1:1 are used as raw materials, soil is removed, mechanically crushed, screened into three ranges of 1-2mm, 2-5mm, and 5-10mm, and formed by washing and drying Machine-made sand aggregate.

[0028] (3) In parts by weight, 5 parts of carbon fiber mesh with an area not less than 5×5 cm, 3 parts of rubber powder, 5 parts of quaternary ammonium salt modified bentonite, 10 parts of dispersible latex powder, 8 parts of cellulose ether, wood Mix 6 parts of cellulose and 3 parts of water reducer evenly to form an admi...

Embodiment 2

[0031] (1) Artificially crush waste bricks and waste concrete from construction waste, and sieve them into two ranges of 15-20mm and 20-30mm, wash and dry to form recycled aggregates, and soak the recycled aggregates in sodium aluminosilicate solution for 6 hours , take it out to dry, heat and activate at 800°C for 3 hours, and obtain the regenerative active construction waste aggregate.

[0032] (2) Sandstone, granite and limestone with a mass ratio of 1:1:1 are used as raw materials, soil is removed, mechanically crushed, screened into three ranges of 1-2mm, 2-5mm, and 5-10mm, and formed by washing and drying Machine-made sand aggregate.

[0033] (3) In parts by weight, 10 parts of carbon fiber mesh with an area not less than 5×5 cm, 7 parts of rubber powder, 10 parts of quaternary ammonium salt modified bentonite, 15 parts of dispersible latex powder, 15 parts of cellulose ether, wood 10 parts of cellulose and 5 parts of water reducing agent are evenly mixed to form an adm...

Embodiment 3

[0036] (1) Manually crush waste bricks and waste concrete from construction waste, and sieve them into two ranges of 15-20mm and 20-30mm, wash and dry to form recycled aggregates, and soak the recycled aggregates in sodium aluminosilicate solution for 4 hours , take it out to dry, heat and activate at 600°C for 2.5h, and obtain the regenerative active construction waste aggregate.

[0037] (2) Sandstone, granite and limestone with a mass ratio of 1:1:1 are used as raw materials, soil is removed, mechanically crushed, screened into three ranges of 1-2mm, 2-5mm, and 5-10mm, and formed by washing and drying Machine-made sand aggregate.

[0038] (3) In parts by weight, 8 parts of carbon fiber mesh with an area not less than 5×5 cm, 5 parts of rubber powder, 7 parts of quaternary ammonium salt modified bentonite, 13 parts of dispersible latex powder, 10 parts of cellulose ether, wood Mix 8 parts of cellulose and 4 parts of water reducer evenly to form an admixture.

[0039] (4) M...

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Abstract

The invention provides high-modulus permeable environment-friendly mortar used for a sponge city and produced by utilizing construction waste and a preparation method thereof. The method comprises the steps of manually crushing abandoned construction waste bricks and abandoned concrete, screening the materials into a 15-20 mm range and a 20-30 mm range, performing washing and airing, soaking the materials in a sodium silicoaluminate solution, taking the materials out for activation, and obtaining renewable active construction waste aggregate; taking sandstone, granite and limestone as raw materials, performing soil removal and mechanical crushing, performing screening to a 1-2 mm range, a 2-5 mm range and a 5-10 mm range, and performing washing and airing to form manufactured sand aggregate; placing the renewable active construction waste aggregate, the manufactured sand aggregate and cement in a blender to perform uniform mixing, adding water-borne epoxy resin high-viscosity grafting cementing material, continuing to perform stirring, adding carbon fiber web, rubber powder, quaternary ammonium salt modified bentonite, dispersible latex powder, cellulose ether, lignocellulose and water reducing agent admixture, nano titanium dioxide ultraviolet absorbent and water, performing uniform mixing, and obtaining the high-modulus permeable environment-friendly mortar used for a sponge city and produced by utilizing construction waste.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method for producing high-elastic-modulus water-permeable and environmentally-friendly mortar for sponge cities by using construction waste. Background technique [0002] With the rise of the construction industry brought about by the rapid economic development, the amount of concrete is very large. The extensive use of concrete not only leads to a rapid shortage of natural sand and a large amount of abandoned construction waste, but also the excessive mining of natural sand destroys the ecological environment. A large number of abandoned buildings The accumulation of garbage is also a great burden on the environment. Therefore, there is a need to find alternatives to natural sand. [0003] Machine-made sand uses rocks and tailings to remove soil, and through artificial mechanical crushing and screening processes to obtain rocks, mine tailing...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B111/20C04B111/27C04B111/34C04B111/40
CPCC04B28/02C04B2111/00017C04B2111/00284C04B2111/00482C04B2111/20C04B2111/275C04B2111/343C04B2111/40C04B2201/50C04B18/16C04B22/08C04B14/02C04B14/28C04B14/386C04B18/22C04B24/121C04B14/104C04B24/383C04B38/0038C04B2103/0057C04B2103/302
Inventor 汤薇蒋晓燕
Owner 绍兴职业技术学院
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