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Regenerated water-permeable concrete

A concrete and water permeability technology, applied in the field of concrete, can solve the problems of unclear color, time-consuming and labor-intensive, and high cost ratio, and achieve the effects of good water permeability, reduced pollution and more porosity.

Inactive Publication Date: 2002-05-01
金旻旭 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, stones, gravel, coarse-grained asphalt, and fine-grained asphalt are used to build pedestrian walkways, bicycle lanes, and small driveways from the bottom to the top, which have poor water permeability and relatively high cost.
The pavement is paved with gravel, sand and cement bricks, which have good water permeability, but the strength is low, the cost is high, and the laying is time-consuming and laborious, and the color is not clear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Based on cement 300kg / m 3 For cement, add stones accounting for 28% of the cement weight, waste concrete regenerated sand or natural ore, the particle size range is 5-13mm, add water 130kg / m 3 , the porosity is 23%. Add furnace slag powder (furnace slag) accounting for 20% of cement weight. Furnace slag is a waste product of steelworks, with a specific gravity of 2.91 and a surface area of ​​7910cm 2 / g or more, SiO 2 Content 34%. Add silica gel powder (Silica Fume) accounting for 15% of cement weight, and the surface area of ​​silica gel powder is 2000000cm 2 / g or more, the specific gravity is 2.1 to 2.2, and the particle size is 0.1 to 0.5 μm. Add 15% of cement weight fly ash (Fly Ash), fly ash is a waste product of thermal power plants, specific gravity 1.9 ~ 2.3, surface area 3000cm 2 / g, particle size is 4.2×10mm 2 . Add iron-type zeolite (Fe zeolite) accounting for 20% of cement weight, the specific gravity of zeolite is 2.56, and the surface area is 10000...

Embodiment 2

[0016] Based on cement 270kg / m 3 For cement, add stones accounting for 25% of the cement weight, waste concrete regenerated sand or natural ore, the particle size range is 5-10mm, add water 125kg / m 3 . 10% by weight of cement is added with furnace slag powder, 5% by weight of cement is added with silica gel powder, 5% by weight of cement is added with fly ash, and 5% by weight of cement is added with iron-type zeolite. Add 1.0% high AE alkaline water agent and 5% SBR rubber emulsion accounting for cement weight. Add 0.5% of the weight of cement fiber, the fiber length is 5 ~ 40mm, add 0.5% of the cement weight of carbon fiber, add 15kg / m 3 of pigments.

Embodiment 3

[0018] Based on cement 345kg / m 3 For cement, add stones accounting for 35% of the cement weight, waste concrete regenerated sandstone or natural ore, the particle size range is 13-20mm, add water 135kg / m 3 . Add furnace slag powder accounting for 40% of cement weight, add silica gel powder accounting for 20% of cement weight, add fly ash accounting for 20% of cement weight, and add iron-type zeolite accounting for 30% of cement weight. Add 3% high AE alkaline water agent and 20% SBR rubber emulsion accounting for cement weight. Add fibers accounting for 4% of the cement weight, the fiber length is 5-40mm, add 20kg / m 3 of pigments.

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Abstract

A regenerated water-permeable concrete used for sidewalk and low-load pavement is prepared from cement, water, broken stone, regenerated waste concrete or natural sand and stone, flyash, silica gel powder, slag powder, etc through proportional mixing, adding water and stirring. It can be used for paving road. The paved road is first cured in water at 23 + / - 2 deg.C and then naturally. Its advantages are 15-30 % of porosity, high water permeability, high strength and use of waste as raw materials.

Description

(1) Technical field: [0001] This invention relates to concrete for the manufacture of walkways and driveways. (two) background technology: [0002] At present, stones, crushed stones, coarse-grained asphalt, and fine-grained asphalt are used to build pedestrian walkways, bicycle lanes, and small driveways from the bottom to the top, which have poor water permeability and relatively high cost. Sidewalks are paved with crushed stones, sand and cement bricks, which have better water permeability, but their strength is low and the cost is high. The laying is time-consuming and laborious, and the color is not clear. (3) Contents of the invention: [0003] The invention focuses on solving the problems of road surface water permeability, strength and waste reuse. [0004] The technical scheme of the invention is: the raw materials are cement, water and stone blocks, waste concrete regenerated sand or natural sand. Based on cement, 270~345kg / m 3 For cement, add stones accountin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/02C04B14/38C04B18/04C04B28/04
CPCY02W30/91
Inventor 金旻旭文荣锡
Owner 金旻旭
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