Gradient permeable concrete product and preparation method thereof

A permeable concrete and gradient-type technology, applied in the field of concrete, can solve problems such as prominent engineering quality warranty problems, large product performance differences, and difficult compaction by vibration, achieving significant economic and environmental benefits, low cost, and effective treatment.

Active Publication Date: 2017-06-30
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art permeable concrete products such as single water permeability, difficulty in compacting by vibrating, large product performance differences, prominent engineering quality warranty problems, cumbersome construction technology and high cost, and propose a gradient type permeable concrete Products and their preparation methods

Method used

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  • Gradient permeable concrete product and preparation method thereof

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Effect test

Embodiment 1

[0043] The embodiment of the present invention provides a kind of preparation method of gradient type permeable concrete product, and preparation method comprises the following steps:

[0044] 1) Weigh 750kg of recycled aggregate, 500kg of lightweight aggregate, 300kg of Portland cement, 60kg of fly ash, 60kg of mineral powder, 12kg of composite admixture, and 110kg of water, and add them to the mixer, stir at high speed evenly, and mix compound;

[0045] Among them, the composite aggregate is composed of recycled aggregate and lightweight aggregate, and the recycled aggregate and lightweight aggregate are mixed at a volume ratio of 1:1 to form a composite aggregate. Recycled aggregate is a single-grain recycled aggregate with a particle size of 5 mm to 10 mm obtained from construction waste concrete; light aggregate is artificial ceramsite with a particle size of 3 to 5 mm. Recycled aggregates and lightweight aggregates are aggregates in a saturated surface-dry state.

[00...

Embodiment 2

[0052] The embodiment of the present invention provides a kind of preparation method of gradient type permeable concrete product, and preparation method comprises the following steps:

[0053] 1) Weigh 750kg of recycled aggregate, 500kg of lightweight aggregate, 300kg of Portland cement, 60kg of fly ash, 60kg of mineral powder, 8.5kg of composite admixture, and 125kg of water, and add them to the mixer, and stir evenly at high speed to obtain admixture;

[0054] Among them, the composite aggregate is composed of recycled aggregate and lightweight aggregate, and the recycled aggregate and lightweight aggregate are mixed at a volume ratio of 1:1 to form a composite aggregate. Recycled aggregate is a single-grain recycled aggregate with a particle size of 5 mm to 10 mm obtained from construction waste concrete; light aggregate is artificial ceramsite with a particle size of 3 to 5 mm. Recycled aggregates and lightweight aggregates are aggregates in a saturated surface-dry state....

Embodiment 3

[0061] The embodiment of the present invention provides a kind of preparation method of gradient type permeable concrete product, and preparation method comprises the following steps:

[0062] 1) Weigh 750kg of recycled aggregate, 500kg of lightweight aggregate, 290kg of Portland cement, 45kg of fly ash, 75kg of mineral powder, 7.5kg of composite admixture, and 130kg of water, and add them to the mixer, and stir evenly at high speed to obtain admixture;

[0063] Among them, the composite aggregate is composed of recycled aggregate and lightweight aggregate, and the recycled aggregate and lightweight aggregate are mixed at a volume ratio of 1:1 to form a composite aggregate. Recycled aggregate is a single-grain recycled aggregate with a particle size of 5 mm to 10 mm obtained from construction waste concrete; light aggregate is artificial ceramsite with a particle size of 3 to 5 mm. Recycled aggregates and lightweight aggregates are aggregates in a saturated surface-dry state....

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Abstract

The invention provides a gradient permeable concrete product and a preparation method thereof. The gradient permeable concrete product comprises the following raw materials: a composite aggregate, a binding material, a compound additive and water in a weight ratio of (2.5-3.5): 1: (0.003-0.03): (0.25-0.35), and the composite aggregate is composed of a regenerated aggregate and a light aggregate. The gradient permeable concrete product prepared by the preparation method is of water permeability of different gradients, is diversified in permeability, and the prepared gradient permeable concrete product is stable in performance, and is easy to vibrate and compact in the preparation process. The 28d compressive strength of the prepared gradient permeable concrete product is 10-20MPa, and the permeable rate is 0.5-10mm / s. By adopting the gradient permeable concrete product provided by the invention, a construction process can be simplified. According to an actual project demand, project construction can be finished at one time, and a technical effect which is as same as that of construction for many times in the prior art can be obtained.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a gradient type permeable concrete product and a preparation method thereof. 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. As an environmentally friendly and ecological road material, it has water permeability, can quickly eliminate water accumulation in roads and squares, and reduce the burden of urban drainage; it can quickly infiltrate rainwater into the ground, replenish groundwater, maintain soil moisture, and maintain the ecology of groundwater and soil Balanced; in terms of heat absorption and heat storage functions, it is close to the ground covered by natural vegetation, adjusts the temperature and humidity of urban space, and al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/16C04B18/02C04B38/00B28B1/04B28B11/24B28B13/02B28B13/06
CPCB28B1/045B28B11/245B28B13/02B28B13/06C04B18/025C04B18/16C04B28/04C04B38/0041C04B2111/00284C04B2201/50C04B18/08C04B14/02C04B22/002C04B24/24C04B24/383C04B24/10C04B24/122C04B18/14C04B18/0409C04B14/30C04B14/365C04B14/361Y02W30/91
Inventor 王雨利何凤霞廖建国李海艳郭晖
Owner HENAN POLYTECHNIC UNIV
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