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Novel ecological permeable concrete material and preparation method thereof

A permeable concrete and ecological technology, applied in the field of new ecological permeable concrete materials and their preparation, can solve problems such as increasing project cost, affecting mechanical strength, slowing down project progress, etc. shorter time effect

Active Publication Date: 2017-08-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the porous structure of the permeable concrete material, its mechanical strength, especially the compressive strength, is limited, and its application in greening projects with certain load-bearing requirements is limited; Lower strength than typical impermeable materials and therefore requires longer curing time, slowing down and increasing project costs

Method used

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  • Novel ecological permeable concrete material and preparation method thereof

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preparation example Construction

[0053] In another specific embodiment provided by the present invention, the preparation method of the permeable concrete material is provided, comprising the following steps:

[0054] (1) Portland cement, aggregates, water, gypsum, silica fume, water reducer, viscous polymer, and quick-setting early-strength agent are weighed strictly in proportion;

[0055] (2) Pre-stir the aggregate and 70% mixing water for 1 min, then add 60% Portland cement, 60% gypsum, 60% silica fume, water reducer and polymer emulsion, and continue stirring for 1 min;

[0056] (3) Add 30% water, quick-setting accelerator, remaining 40% Portland cement, 40% gypsum and 40% silica fume to the mixer, continue mixing and stirring for 4 minutes, and stir for a total of 6 minutes;

[0057] (4) When forming, put the freshly mixed permeable concrete into the mold layer by layer, vibrate each layer 20 times, and finally use 0.5-0.9MPa pressure for pressure molding;

[0058] (5) After forming, continue to mainta...

Embodiment 1

[0064] A new type of ecological permeable concrete material, its weight ratio composition: 42.5 parts of ordinary Portland cement 83 parts, 5 parts of gypsum, 6 parts of silica fume, 6 parts of adhesive polymer, 26 parts of water, and 0.6 parts of external superplasticizer 0.8 parts of quick-setting early strength agent (30% triethanolamine, 40% sodium silicate, 30% lithium carbonate), 400 parts of natural aggregate (stone), the particle size of aggregate is 4.75-9.5mm and 9.5-16mm.

[0065] The preparation method comprises the following steps:

[0066] (1) Portland cement, aggregates, water, gypsum, silica fume, water reducer, viscous polymer, and quick-setting early-strength agent are weighed strictly in proportion;

[0067] (2) Pre-stir the aggregate and 70% mixing water for 1 min, then add 60% Portland cement, 60% gypsum, 60% silica fume, water reducer and polymer emulsion, and continue stirring for 1 min;

[0068] (3) Add 30% water, quick-setting accelerator, remaining 4...

Embodiment 2

[0072] A new type of ecological permeable concrete material, its weight ratio composition: a new type of ecological permeable concrete material, its weight ratio composition: ordinary Portland 42.5 cement 78 parts, gypsum 4 parts, silica fume 8 parts, cohesive polymerization 10 parts of material, 28 parts of water, 0.5 part of superplasticizer, 0.8 part of quick-setting early strength agent (30% triethanolamine, 40% sodium silicate, 30% lithium carbonate), 500 parts of natural aggregate (stone), The aggregate particle size is 4.75-9.5mm and 9.5-16mm.

[0073] The preparation method comprises the following steps:

[0074] (1) Portland cement, aggregates, water, gypsum, silica fume, water reducer, viscous polymer, and quick-setting early-strength agent are weighed strictly in proportion;

[0075] (2) Pre-stir the aggregate and 70% mixing water for 1 min, then add 60% Portland cement, 60% gypsum, 60% silica fume, water reducer and polymer emulsion, and continue stirring for 1 mi...

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Abstract

The invention discloses a novel ecological permeable concrete material and a preparation method thereof. The concrete material has the advantages of high strength, high permeable coefficient, adjustable porosity, shorter curing time, simple preparation method and the like, has a very high application value in a sponge city building process, and has important significance to the realization of continuous development of permeable concrete and the maintenance of underground water ecological balance. The novel ecological permeable concrete material is prepared from the following specific components in parts by mass: 400 to 500 parts of natural aggregate, 75 to 92 parts of ordinary Portland cement, 4 to 7 parts of desulfurized gypsum, 4 to 10 parts of silica fume, 0.5 to 1.5 parts of water reducing agent, 22 to 36 parts of water, 4 to 12 parts of adhesive polymer and 0.5 to 1.2 parts of rapid hardening early strength agent.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a novel ecological permeable concrete material and a preparation method thereof. Background technique [0002] Under the background of my country's new-type urbanization and the depletion and deterioration of groundwater resources, the sponge city, as a harmonious coexistence between man and nature, can play the role of urban water ecological service, guide the sustainable development of the city, and fundamentally solve the problem of urban water and ecology. , was proposed and promoted by scholars in professional fields, and became the strategic goal of the national and local governments to solve the comprehensive management of urban stormwater. [0003] Permeable concrete has the advantages of water permeability, sound absorption and noise reduction, water purification, soil ecological environment improvement, surface runoff relief and heat island effect r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/00E01C11/22E01C7/14C04B111/20C04B111/40
CPCC04B28/04C04B38/0038C04B2111/00017C04B2111/00025C04B2111/00284C04B2111/20C04B2111/40C04B2201/50E01C7/142E01C11/226C04B14/02C04B18/064C04B18/146C04B24/26C04B24/122C04B22/00C04B22/10C04B20/0076C04B2103/302
Inventor 刘人太沙飞李术才张庆松李召峰张思凡张欣蔡昕晨李梦筱马骏
Owner SHANDONG UNIV
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