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| Experimental study on physical properties of the permeable concrete brick made by cool isostatic pressing technology |
| ZhangYanjuan1,Zhang Hongtao1,2,Xu Xiangzhou1,Xu Jingsong1 |
| 1.School of Hydraulic Engineering,Dalian University of Technology,116024,Dalian,Liaoning;2.CCCC Guangzhou Dredging Co.LTD,510221,Guangzhou: China |
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Abstract Pervious surfaces could decrease the urban storm peak,conserve rainfall in the underground,and reduce the high air temperature of city.This paper designs four kinds of permeable bricks with different porosities and water cement ratios,which is decided through the volume method.After mixing and isostatic pressing,we measure the porosity,compressive properties and permeability coefficient of the samples,and calculate the cost of brick which has the highest permeability coefficient.The results show that: 1) The permeability coefficients of all samples reach 1.18-1.60mm/s and compressive properties of that exceed 30MPa.2) The volume method is logical and feasible.3) The cost of the new permeable brick is only 28.25 yuan/m2 if 20% of the total cement was replaced by the mixture of 15% fly ash and 5% silica fume.
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Received: 26 April 2010
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