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Preparation method of environment-friendly colored pervious concrete

A permeable concrete and environment-friendly technology, applied in the field of concrete, can solve the problems of poor workability, low strength, and low water permeability coefficient of permeable concrete, and achieve the effects of enhancing cohesion, improving compressive resistance, and increasing strength

Pending Publication Date: 2022-05-03
上海拜石实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for preparing environmentally friendly colored permeable concrete, which aims to solve the problem of poor workability, uneven distribution of pores, low strength and low water permeability coefficient of existing permeable concrete, which cannot meet the requirements of laying high-performance pavements. requirements, and cannot meet the requirements of drainage in rainy seasons

Method used

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  • Preparation method of environment-friendly colored pervious concrete

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] In this example, after the waste concrete is crushed and removed by crushing equipment, coarse aggregate and fine aggregate are obtained by screening with a screening equipment with a sieving aperture of 15mm; 1200 parts of coarse aggregate, 80 parts of fine aggregate, During the mixing and stirring process of 5 parts of fibers and 2 parts of single-walled carbon nanotubes, a silane coupling agent solution with a concentration of 5wt% was sprayed to obtain a modified water-permeable aggregate; 1300 parts of modified water-permeable aggregate and 200 parts of cement , 170 parts of water and 8 parts of water reducer, mixed uniformly at a speed of 150r / min to obtain a concrete base material; 300 parts of modified water-permeable aggregate, 15 parts of cement, 40 parts of water and 15 parts of colored cement, passed The rotating speed of 150r / min is evenly mixed to obtain the concrete top material; after the obtained concrete bottom material is paved and tamped, the concrete...

Embodiment 2

[0030] In this example, after the waste concrete is crushed and removed by crushing equipment, coarse aggregate and fine aggregate are obtained by screening with a screening equipment with a sieving aperture of 15mm; 1350 parts of coarse aggregate, 90 parts of fine aggregate, During the mixing and stirring process of 8 parts of fibers and 3 parts of single-walled carbon nanotubes, a silane coupling agent solution with a concentration of 5wt% was sprayed to obtain a modified water-permeable aggregate; 1300 parts of modified water-permeable aggregate and 200 parts of cement , 170 parts of water and 8 parts of water reducer, mixed uniformly at a speed of 150r / min to obtain a concrete base material; 300 parts of modified water-permeable aggregate, 15 parts of cement, 40 parts of water and 15 parts of colored cement, passed The rotating speed of 150r / min is evenly mixed to obtain the concrete top material; after the obtained concrete bottom material is paved and tamped, the concrete...

Embodiment 3

[0036] In this example, after the waste concrete is crushed and removed by crushing equipment, coarse aggregate and fine aggregate are obtained by screening with a screening equipment with a sieving aperture of 15mm; 1500 parts of coarse aggregate, 100 parts of fine aggregate, anti-crack During the mixing and stirring process of 10 parts of fibers and 5 parts of single-walled carbon nanotubes, a silane coupling agent solution with a concentration of 5wt% was sprayed to obtain a modified water-permeable aggregate; 1300 parts of modified water-permeable aggregate and 200 parts of cement , 170 parts of water and 8 parts of water reducer, mixed uniformly at a speed of 150r / min to obtain a concrete base material; 300 parts of modified water-permeable aggregate, 15 parts of cement, 40 parts of water and 15 parts of colored cement, passed The rotating speed of 150r / min is evenly mixed to obtain the concrete top material; after the obtained concrete bottom material is paved and tamped,...

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Abstract

The invention belongs to the technical field of concrete, and provides an environment-friendly colored pervious concrete preparation method, which comprises: 1, crushing waste concrete through a crushing device to remove impurities, and screening through a screening device to obtain a coarse aggregate and a fine aggregate; 2, in the process of mixing and stirring 1200-1500 parts of coarse aggregate, 80-100 parts of fine aggregate, 5-10 parts of anti-crack fibers and 2-5 parts of single-walled carbon nanotubes, a silane coupling agent solution is sprayed, and modified water-permeable aggregate is obtained; step 3, uniformly mixing the modified water-permeable aggregate, cement, water and a water reducing agent according to a ratio of (80-100): (15-20): (10-15): (0.5-1) at a rotating speed of 120-150r / min to obtain a concrete backing material; the anti-crack fiber improves the pressure resistance of the concrete and also can enhance the binding power of cement paste and aggregate, and the single-walled carbon nanotubes increase the water permeability and play a role in water permeability.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a preparation method of environment-friendly colored permeable concrete. Background technique [0002] With the development of concrete technology, maintaining ecological balance and realizing sustainable development are also the pursuit goals in the field of building materials. Permeable concrete products are also called porous concrete, or drainage concrete; they have water permeability, can quickly eliminate road water accumulation, and reduce the burden of urban drainage. [0003] Permeable concrete needs to have a certain strength, but also have a certain water permeability. The existing permeable concrete has poor workability, uneven pore distribution, low strength and low water permeability coefficient due to the reasons of materials and preparation process, which cannot meet the requirements of laying high-performance pavement, nor can it meet the requiremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/00C04B18/16C04B14/38C04B111/82
CPCC04B28/00C04B14/026C04B18/16C04B2111/00612C04B2111/00284C04B2111/0075C04B2111/82C04B2201/50C04B2201/52C04B20/0048C04B2103/302C04B38/00C04B24/124C04B24/2617C04B2103/0045C04B2103/54Y02W30/91
Inventor 吴艳吴涵宇
Owner 上海拜石实业发展有限公司