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A lightweight permeable concrete containing ceramsite

A permeable concrete, lightweight technology, applied in the field of building materials, can solve the problems of increasing the burden on the urban drainage system, the accumulation of water on urban roads, and daily travel troubles, so as to realize the comprehensive utilization of high added value, adjust the urban climate, and increase the urban groundwater. The effect of resources

Active Publication Date: 2018-08-03
SHANGHAI CONSTR BUILDING MATERIALS TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the precipitation can only be discharged through the city's drainage system, which not only increases the burden on the city's drainage system, but also easily causes the problem of water accumulation on urban roads, which brings great troubles to people's daily travel. The lack of proper replenishment will cause the groundwater level to drop and drought disasters to occur frequently

Method used

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Embodiment 1

[0027] The specific composition and application of the lightweight permeable concrete made of gangue ceramsite involved in this embodiment are as follows. The unilateral dosage ratio (kg / m3) of each component in this embodiment 3 ) as follows: cement 405, coal gangue ceramsite 990, admixture 1.62, mixing water 140.

[0028] Table 1: Proportion of lightweight ceramsite permeable concrete

[0029] material name

[0030] In the case of the above ratio, it is advisable to carry out small-scale production, and the surface of the permeable concrete after mixing should show a metallic luster and have a certain degree of cohesion. After leaving the factory, it is transported to the construction site. The machine-pressed pavement is adopted. The mixed lightweight permeable concrete has a slump of 60mm, a water permeability coefficient of 2.6mm / s, a porosity of 16%, and a 28d compressive strength of 28.5MPa. The measured concrete density is 1580kg / m 3 .

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Abstract

The invention relates to a lightweight permeable concrete containing ceramsite, which belongs to the field of building materials. Concrete preparation ratio (kg / m3) is as follows: The ratio of ingredients in concrete (kg / m3) is as follows: mixing water 130~150, cement 410~450, ceramsite 990~1000, admixture 1.11~1.80, the ceramic The particles are coal gangue ceramsite with a particle size of 5mm~10mm continuous gradation, the particle type is spherical, the packing density grade of gangue ceramsite is 900kg / m3~950 kg / m3, and the close packing density is 980kg / m3~1030kg / m3 , the apparent density is 1700kg / m3~1800kg / m3. The permeable concrete of the present invention uses a large amount of coal gangue ceramsite fired with coal gangue, a by-product of the coal mining process. The demand for natural stone has a positive effect on solving solid emissions and air pollution.

Description

technical field [0001] The invention relates to building materials, in particular to a lightweight, permeable concrete. Background technique [0002] Permeable concrete is an eco-friendly concrete with continuous voids, which is prepared by a special process with specific gradation of cement, water, aggregates, admixtures, etc. according to a specific mix ratio. Compared with ordinary concrete, its apparent density, permeable concrete has many excellent performances such as water permeability, air permeability, water purification, sound absorption and noise reduction, protection of groundwater resources, mitigation of urban heat island effect and improvement of soil ecological environment. Therefore, under the guidance of strategic ideas such as sustainable development and maintaining ecological balance, some developed countries such as Japan, South Korea, Europe and the United States began to design, research and develop pervious concrete more than 50 years ago. Its mix ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/08C04B111/40
Inventor 吴德龙李晓庭陈建大朱敏涛田颖钱
Owner SHANGHAI CONSTR BUILDING MATERIALS TECH GRP CO LTD
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