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Ecological permeable pavement brick and preparation method thereof

A permeable pavement brick and ecological technology, applied in the field of construction, can solve the problems of uneven mixing of mortar and brick, low average strength, poor wear resistance, etc., to reduce production costs, high flexural strength and split tensile strength, Good slip resistance and water permeability

Active Publication Date: 2014-03-12
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to make full use of the three solid wastes of construction slag, steel slag and fly ash, aiming at the porosity, water permeability, large internal friction between materials and strong bonding force with various inorganic binders of construction slag. etc. and the shortcomings of uneven mixing of mortar and brick in house slag, low average strength, and poor wear resistance, steel slag as aggregate has the advantages of strong skeleton effect and high wear resistance, and fly ash as an admixture It has the characteristics of reducing the heat of hydration, improving workability, and reducing production costs. It has the characteristics of high flexural strength and splitting tensile strength, frost resistance, abrasion resistance, skid resistance and water permeability. Ecological permeable pavement brick and preparation method thereof

Method used

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  • Ecological permeable pavement brick and preparation method thereof

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Embodiment 1

[0020] An ecological permeable pavement brick, made of the following raw materials in parts by weight: cement: fly ash: building slag coarse aggregate: steel slag coarse aggregate: sand: water: water reducer = 1:0.25:1.60:1.70: 0.9:0.50:0.031.

[0021] In this embodiment, the cement is ordinary Portland cement with a strength grade of 42.5R; the fly ash is Class I fly ash of Zouping Power Plant; the water absorption rate of the building slag coarse aggregate is 15%, the apparent density is 2.35g / cm 3 , the particle size is 5-10mm; the steel slag coarse aggregate has a water absorption rate of 2.0% and an apparent density of 3.5g / cm 3 , the particle size is 10-15mm; the sand is natural river sand with a fineness modulus of 2.8. ; The water reducer is a polycarboxylate water reducer.

[0022] According to the preparation method of the ecological permeable pavement brick described in the present embodiment 1, comprises the following steps:

[0023] a. Use mechanical mixing, f...

Embodiment 2

[0026] An ecological permeable pavement brick is made of the following raw materials in parts by weight: cement: fly ash: building slag coarse aggregate: steel slag coarse aggregate: sand: water: water reducer =1:0.30:1.8:1.7:0.7:0.52:0.038.

[0027] Described cement is the composite portland cement that strength grade is 32.5R; Described fly ash is Jinan Huangtai Power Plant II class fly ash; The apparent density is 2.30g / cm 3 , the particle size is 5-10mm. The steel slag coarse aggregate has a water absorption rate of 2.5%, an apparent density of 3.4g / cm3, and a particle size of 10-15mm; the described sand is natural river sand with a fineness modulus of 2.9; the described water reducing The agent is a naphthalene-based water reducer.

[0028] The preparation method of described ecological permeable pavement brick, comprises the following steps:

[0029] a. Use mechanical mixing, first add sand to the concrete mixer, then add cement and fly ash, dry mix for 1-2 minutes u...

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Abstract

The invention provides an ecological permeable pavement brick prepared from in a ratio of cement to coal ash, coarse aggregates of construction wastes to coarse aggregates of steel slag to sand to water to a water reducing agent of 1;(0.2-0.3):(1.6-1.8):(1.6-1.8):(0.7-0.9):(0.45-0.52):(0.03-0.04). The invention also provides a preparation method of the ecological permeable pavement brick according to the ratio. The ecological permeable pavement brick has the advantages of high breaking strength and splitting tensile strength, freezing resistance, wear resistance, slip resistance, good permeability and the like.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a pavement brick, in particular to an ecological permeable pavement brick and a preparation method thereof. Background technique [0002] One kind of construction waste is house slag, which refers to the waste generated during the construction, decoration, maintenance and demolition of buildings, and is an important part of urban waste. With the acceleration of industrialization and urbanization, the construction speed of new construction and reconstruction projects in my country's cities and towns is increasing day by day, and the waste bricks and tiles, waste concrete and other construction slag generated by building demolition are piled up like mountains. At present, the construction waste directly landfilled without treatment in my country accounts for more than 90%, while the recycling rate of construction waste only accounts for 9%, which is a huge waste of resources. ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/08
Inventor 张爱勤张旭孙式霜赵鲲鹏周鹏孔珍珍
Owner SHANDONG JIAOTONG UNIV
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