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Pervious concrete

A technology of permeable concrete and cement, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve excellent performance and improve pozzolanic properties

Inactive Publication Date: 2017-04-26
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report on the use of sulfur-fixed ash in pervious concrete

Method used

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  • Pervious concrete

Examples

Experimental program
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Embodiment 1

[0026] A kind of permeable concrete includes the following raw materials configured by weight: cement 460kg / m 3 , sulfur-fixed ash 80kg / m 3 , stone 1170kg / m 3 , sand 100kg / m 3 , water 152kg / m 3 , Water reducer: 1.5kg / m 3 , numbered 1.

[0027] Cement is P.O42.5R in the present embodiment.

[0028] In this example, the particle size of the original ash of sulfur-fixed ash satisfies D after proper grinding. 50 15.2 μm, D 10 3μm, D 90 The water demand ratio of sulfur-fixing ash is 105%, and the 28d activity index is 95% (refer to Appendix B and Appendix D of GB1596-2005 "Fly Ash Used in Cement and Concrete" for water demand ratio and activity index).

[0029] In this embodiment, the stones are crushed stones with a particle size of 9.5-16mm.

[0030] In this embodiment, the water reducer is a polycarboxylate high-efficiency water reducer.

[0031] The concrete molding method in the present embodiment is as follows:

[0032] The concrete in this embodiment is poured in ...

Embodiment 2

[0034] A kind of permeable concrete includes the following raw materials configured by weight: cement 320kg / m 3 , sulfur-fixed ash 220kg / m 3 , stone 1300kg / m 3 , sand 0kg / m 3 , water 190kg / m 3 , Water reducer: 1.7kg / m 3 , numbered 2.

[0035] Cement is P.O42.5R in the present embodiment.

[0036] In this example, the particle size of the original ash of sulfur-fixed ash satisfies D after proper grinding. 50 22 μm, D 10 4.2 μm, D 90 The water demand ratio of sulfur-fixing ash is 100%, and the 28d activity index is 86% (refer to Appendix B and Appendix D of GB1596-2005 "Fly Ash Used in Cement and Concrete" for water demand ratio and activity index).

[0037] In this embodiment, the stones are crushed stones with a particle size of 9.5-16mm.

[0038] In this embodiment, the water reducer is a polycarboxylate high-efficiency water reducer.

[0039] The concrete molding method in the present embodiment is as follows:

[0040] The concrete in this embodiment is poured in ...

Embodiment 3

[0042] A kind of permeable concrete includes the following raw materials configured by weight: cement 380kg / m 3 , sulfur-fixed ash 160kg / m 3 , stone 1200kg / m 3 , sand 80kg / m 3 , water 162kg / m 3 , Water reducing agent: 1.6kg / m 3 , numbered 3.

[0043] Cement is P.O42.5R in the present embodiment.

[0044] In this example, the particle size of the original ash of sulfur-fixed ash satisfies D after proper grinding. 50 25 μm, D 10 5μm, D 90The water demand ratio of sulfur-fixing ash is 95%, and the 28d activity index is 80% (refer to Appendix B and Appendix D of GB1596-2005 "Fly Ash Used in Cement and Concrete" for water demand ratio and activity index).

[0045] In this embodiment, the stones are crushed stones with a particle size of 9.5-16mm.

[0046] In this embodiment, the water reducer is a polycarboxylate high-efficiency water reducer.

[0047] The concrete molding method in the present embodiment is as follows:

[0048] The concrete in the embodiment is poured i...

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Abstract

The invention discloses pervious concrete. The pervious concrete is prepared from the following raw materials according to weight: 320kg / m<3>-460kg / m<3> of cement, 80kg / m<3>-220kg / m<3> of desulphurization ash, 1170kg / m<3>-1300kg / m<3> of pebbles, 0kg / m<3>-100kg / m<3> of sand, 152kg / m<3>-190kg / m<3> of water and 1.5kg / m<3>-1.7 kg / m<3> of a water reducing agent. The pervious concrete has the beneficial effects that as lots of desulphurization ash is used, the problem that lots of land is occupied by accumulated desulphurization ash is solved; the pervious concrete has excellent performance and low cost; and the resource comprehensive utilization of the desulphurization ash is realized.

Description

technical field [0001] The invention relates to a permeable concrete, which belongs to the technical field of concrete processing. Background technique [0002] Conventional road surfaces are made of impermeable concrete, which affects the water cycle in the natural environment, reduces humidity and increases air temperature in cities. In addition, impermeable concrete will lead to the failure of replenishment of urban groundwater and serious loss of water resources. Permeable concrete, also known as porous concrete, is a kind of porous lightweight concrete made by mixing aggregate, cementitious material and water. The surface of coarse aggregate is covered with a thin layer of slurry to bond with each other to form a uniform distribution of pores. Honeycomb structure, so it has the characteristics of air permeability, water permeability and light weight. Permeable concrete can effectively supplement groundwater and alleviate the problem of sharp drop in urban groundwater ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/06C04B14/02C04B20/00
CPCC04B14/02C04B18/061C04B20/0076C04B20/0088C04B28/04C04B2111/00284C04B2201/50C04B14/06C04B24/24C04B22/002Y02W30/91
Inventor 夏艳晴王宁
Owner JIAHUA SPECIAL CEMENT
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