地聚物基透水混凝土的制备与性能

doi:10.11896/cldb.18100165

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Abstract Pervious concrete has been widely concerned and studied due to its water and air permeability, sound absorption and noise reduction. Nevertheless, the porous structure of pervious concrete makes it bear non-uniform forces, limiting the application of pervious concrete to the pavement with low load. For the sake of improving the strength and durability of the pervious concrete, geopolymer was taken as cementing materials for pervious concrete. Orthogonal test was designed to study the optimal mixing proportion of pervious concrete. The effects of porosity, aggregate particle size, liquid-to-binder ratio, slag content and water glass modulus on the properties of pervious concrete were analyzed. Furthermore, taking the compressive strength, splitting tensile strength, permeability coefficient and freezing resistance as indices, the relationships between porosity and permeability coefficient, permeability coefficient and compressive strength, porosity and splitting tensile strength were discussed through fitting analysis. Results indicated that the optimal proportion of pervious concrete were target porosity of 15%, liquid-to-binder ratio of 60%, aggregate size of 2—5 mm, water glass modulus of 1.4, slag content of 20%. The pervious concrete obtained under optimal proportion exhibited the 28 d compressive strength of 33 MPa, splitting tensile strength of 2.4 MPa, permeability coefficient of 8.4 mm/s, with an anti-free-zing performance appropriate to the standard.

Key words： geopolymer the pervious concrete permeable coefficient freezing resistance

Published: 28 October 2019

CLC number:

TU52

Fund:This work was supported by the Chongqing Basic Science and Frontier Technology Research Project (cstc2017jcyj AX0315), National Natural Science Foundation of China (51678093).

About author:: Lu Zeng, received his Ph.D. degree in China University of Geosciences. He is currently an associate professor and a tutor of postgraduate students in Chongqing University. His research interests are new alkali activated binder and silicate synthetic materials.

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	ZENG Lu
	HE Mou
	ZHANG Minghua
	HU Tingting
	WANG Shuping
	PENG Xiaoqin

Cite this article:

ZENG Lu,HE Mou,ZHANG Minghua, et al. Preparation and Properties of Geopolymer Modified Pervious Concrete[J]. Materials Reports, 2019, 33(24): 4086-4091.

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http://www.mater-rep.com/EN/10.11896/cldb.18100165 OR http://www.mater-rep.com/EN/Y2019/V33/I24/4086

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