Hybrid nanoparticle reinforced ecological pervious concrete and preparation method thereof

A technology of hybrid nano-particles and permeable concrete, applied in ceramic products, other household appliances, applications, etc., can solve the problems of restricting the overall purification of permeable concrete and limited light intensity, and achieve the effect of improving degradation and high transparency

Active Publication Date: 2020-04-14
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for pervious concrete, due to the opacity of cementitious materials and traditional aggregates, most of the light action is still concentrated on the concrete surface, relying only o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Raw materials: 300 parts of cement, 30 parts of fly ash, 800 parts of gravel, 700 parts of waste glass aggregate, 0.02 part of cellulose ether, 0.1 part of fatty alcohol emulsion, 7 parts of nano-titanium dioxide, 20 parts of hybrid nanoparticle solution, 90 parts of water. The cement is ordinary Portland cement with a strength grade of 52.5; the fly ash used is Class I fly ash; the crushed stone is single-graded with a particle size of 15mm; the particle size of waste glass aggregate is 10mm; The crystal form is anatase, and the particle size is 20nm.

[0017] The preparation method of the hybrid nanoparticle solution is as follows: add 15 parts of aminated nano-silica to 85 parts of water, ultrasonically oscillate for 1 hour, slowly drop in 10 parts of a water reducer solution with a mass solubility of 15% within 2 hours, and stir Uniformly, a hybrid nanoparticle solution is prepared. The particle size of amino nano-silica is 20nm, and the water reducer is polycarbo...

Embodiment 2

[0023] Raw materials: 270 parts of cement, 50 parts of fly ash, 600 parts of gravel, 700 parts of waste glass aggregate, 0.03 part of cellulose ether, 0.2 part of fatty alcohol emulsion, 6 parts of nano-titanium dioxide, 18 parts of hybrid nanoparticle solution, 85 parts of water. The cement is ordinary Portland cement with a strength grade of 52.5; the fly ash used is Class I fly ash; the crushed stone is single-graded with a particle size of 15mm; the particle size of waste glass aggregate is 10mm; The crystal form is anatase, and the particle size is 30nm.

[0024] The preparation method of the hybrid nanoparticle solution is as follows: add 15 parts of aminated nano-silica to 85 parts of water, ultrasonically oscillate for 1 hour, slowly drop 10 parts of a water reducer solution with a mass solubility of 15% within 1 hour, and stir Uniformly, a hybrid nanoparticle solution is prepared. The particle size of amino nano-silica is 30nm, and the water reducer is polycarboxyla...

Embodiment 3

[0030] Raw materials: 300 parts of cement, 30 parts of fly ash, 500 parts of gravel, 800 parts of waste glass aggregate, 0.03 part of cellulose ether, 0.2 part of fatty alcohol emulsion, 8 parts of nano-titanium dioxide, 25 parts of hybrid nanoparticle solution, 95 parts of water. The cement is ordinary Portland cement with a strength grade of 52.5; the fly ash used is Class II fly ash; the crushed stone is single-graded with a particle size of 15mm; The crystal form is anatase, and the particle size is 20nm.

[0031] The preparation method of the hybrid nanoparticle solution is as follows: 15 parts of aminated nano-silica is added to 85 parts of water, ultrasonically oscillated for 1 hour, and 10 parts of a water reducer solution with a mass solubility of 15% is slowly dropped in within 1.5 hours. Stir evenly to prepare a hybrid nanoparticle solution; the particle size of the amino nano-silica is 20nm, and the water-reducer is a polycarboxylic acid-based water-reducer.

[0...

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Abstract

The invention discloses hybrid nanoparticle reinforced ecological pervious concrete and a preparation method thereof, wherein the ecological pervious concrete comprises 200 to 350 parts of cement, 15to 60 parts of fly ash, 200 to 900 parts of broken stone, 200 to 800 parts of waste glass aggregate, 0.02 to 0.06 part of cellulose ether, 0.05 to 0.3 part of fatty alcohol emulsion, 3 to 15 parts ofnano titanium dioxide, 12 to 25 parts of a hybrid nanoparticle solution and 60 to 120 parts of water. The preparation method of the concrete comprises the following steps: (1) uniformly mixing water,nano titanium dioxide and waste glass aggregate to obtain a mixture; (2) preparing a hybrid nanoparticle solution; (3) adding cement, fly ash, broken stone, cellulose ether, fatty alcohol emulsion andthe hybrid nanoparticle solution into the mixture obtained in the step (1), and stirring; and (4) pouring the product obtained in the step (2) into a mold, maintaining for 7-28 days, and demolding toobtain the hybrid nanoparticle reinforced ecological pervious concrete. According to the concrete, the degradation effect of pervious concrete on pollutants can be improved, the corrosion resistancecoefficient of the concrete reaches 96%, the pervious coefficient reaches 5.1 mm/s, and the 28d compressive strength reaches 35.5 Mpa.

Description

technical field [0001] The invention relates to an ecological permeable concrete and a preparation method thereof, more specifically, to a hybrid nanoparticle-reinforced ecological permeable concrete and a preparation method thereof. Background technique [0002] The pavement of permeable concrete can realize the infiltration of rainwater, reduce surface runoff and alleviate the urban heat island effect. Permeable concrete is a kind of porous concrete material. The cement paste wraps the aggregate to form a skeleton-pore structure. The aggregate is usually a single-size coarse aggregate. Since the hardened slurry between the aggregates is thin, it is prone to shrinkage during service. In order to overcome this shortcoming, it is usually necessary to add component materials to improve the durability of the hardened slurry. At present, in order to improve the ecological performance of pervious concrete, Construction waste and mineral waste will be mixed into the slurry compon...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/20C04B111/40
CPCC04B28/04C04B2111/00017C04B2111/00284C04B2111/00827C04B2111/20C04B2111/40C04B2201/50C04B18/08C04B14/06C04B14/22C04B24/383C04B24/026C04B22/06C04B2103/302C04B38/0041
Inventor 顾越夏锴伦蒋林华郭明志
Owner HOHAI UNIV
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