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Colorful regeneration permeable concrete for road and preparation method thereof

A technology of permeable concrete and color regeneration, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of concrete pollution, low flexural strength and durability, etc., and alleviate the urban thermal conductivity effect. , The effect of good water permeability and energy saving

Inactive Publication Date: 2014-12-03
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the existing waste concrete pollutes the environment, and the permeable concrete has low compressive strength, flexural strength and durability, and proposes a colored recycled permeable concrete for pavement and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weighing 292kg / m of ordinary portland cement with a label of 42.5 3 , slag 194kg / m 3 , natural primary stone 1180kg / m 3 , regenerated stone 296 / m 3 , Natural washed medium sand 111kg / m 3 , water consumption is 131kg, iron oxide red pigment 12.5kg / m 3 , superplasticizer 5kg / m 3 , polypropylene fiber 1kg / m 3 . The molding process is to add aggregate (sand and stone 1587kg) and 50% of all water consumption (ie 55.5kg) into the forced mixer and stir for 30s, then add cementitious material (ie cement 292kg, slag 194kg), water reducing agent 5kg, Mix 1kg of polypropylene fiber for 40s, and finally add all the remaining water (55.5kg) and mix for more than 50s to form a uniform, dry and humid mixture, and then use a multi-functional numerical control magnetic force with a vibration frequency of 2860 times and an amplitude of 0.6mm After vibrating the vibrator for 20s, the surface is smoothed with a trowel, and cured in a standard curing box for 28 days, and the colored ...

Embodiment 2

[0019] Weigh 340kg / m of ordinary portland cement with label number 52.5 3 , slag 146kg / m 3 , raw stone 1477kg / m 3 , regenerated stone 369 / m 3 , Natural washed medium sand 184.7kg / m 3 , water consumption 145.8kg / m 3 , Pigment 24.35kg / m 3 , water reducer 7.29kg / m 3 , polypropylene fiber 1.4kg / m 3 , the molding process is to add aggregate (sand and stone 2516kg) and 50% of all water consumption (ie 72.5kg) into the forced mixer and stir for 30s, then add (ie cementitious material 340kg, slag 146kg), water reducing agent ( That is 7.29kg), polypropylene fiber (that is 1.4kg) and mix for 40s, and finally add all the remaining water (75.5kg) and mix for more than 50s to form a uniform mixture with suitable dry humidity, and then use a vibration frequency of 2860 times , the amplitude of 0.6mm multi-functional numerical control magnetic vibrating table vibrates for 23s, smooth the surface with a trowel, and cure it in a standard curing box for 28 days, and then it can be made ...

Embodiment 3

[0021] Weigh the ordinary Portland cement 316kg / m with the label of 42.5 3 , slag 170kg / m 3 , raw stone 1096kg / m 3 , regenerated stone 274 / m 3 , Natural washed medium sand 274kg / m 3 , water consumption 160 kg / m 3 , iron oxide red pigment 36kg / m 3 , superplasticizer 2.45kg / m 3 , polypropylene fiber 0.8kg / m 3 , the molding process is to add aggregate (sand and stone) and 50% of all water into the forced mixer and stir for 30s, then add cement, water reducing agent, polypropylene fiber and mix for 40s, and finally add the remaining water and mix for more than 50s Mix it into a uniform mixture with suitable dry humidity, and then vibrate for 18 seconds with a multifunctional numerically controlled magnetic vibrator with a vibration frequency of 2860 times and an amplitude of 0.6mm. Colored recycled permeable concrete for pavement, after testing, its compressive strength is 26 MPa, flexural strength is 4.1 MPa, water permeability coefficient is 1.5 mm / s, mass loss rate after...

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Abstract

The invention discloses a colorful regeneration permeable concrete for road and a preparation method thereof. The colorful regeneration permeable concrete consists of aggregate, a cementing material, polypropylene fiber, a water reducing agent, pigment and water; the cementing material consists of silicate cement and mineral waste residue; the ratio of water to glue is 0.27-0.33; the mass ratio of the aggregate to the cementing material is 2.82-3.80; the aggregate consists of coarse aggregate and fine aggregate; the coarse aggregate consists of natural broken stone and regeneration broken stone prepared from waste concrete; the fine aggregate is common water-washing medium sand; the mass of the fine aggregate is 5-20% of the mass of coarse aggregate; the mass of the polypropylene fiber is 0.1-0.3% of the mass of the cementing material; the mass of the polycarboxylic acid water reducing agent is 0.5-1.5% of the mass of the cementing material; and the mass of the pigment is 2.5-7.5% of the mass of the cementing material. Through the combination of recycled aggregate and common aggregate, the invention can recycle the waste resources and solve the problem of low strength.

Description

technical field [0001] The invention relates to a batching of concrete used in civil engineering, construction, mining, road, railway or bridge construction and a preparation method thereof. Background technique [0002] The process of urbanization is accelerating, a large number of existing buildings are demolished, and there is a large amount of construction waste, especially waste concrete. Except for a small number of waste concrete, most of them are piled up in the suburbs of the city, seriously polluting the environment. Ordinary impermeable concrete pavement cannot quickly infiltrate ground rainwater into the ground in time, resulting in water accumulation on the pavement. In terms of color, ordinary concrete and asphalt roads are mostly dark gray and black, and their reflectivity to sunlight is very low. The heat absorbed by them is much greater than that of green grass, which leads to the intensification of urban thermal effects. [0003] Compared with ordinary con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/08C04B18/16
CPCY02W30/91
Inventor 朱平华李美娟伍君勇封金财
Owner CHANGZHOU UNIV
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