Mixture Design of Plastic Porous Cement Concrete for Urban Highway Base

Abstract:

Low-plastic porous cement concrete,a high-fluid porous cement concrete,is doveloped for special requirements of base construction in urban highway.The paper presents the strength standard of design and suggested gradation for the low-plastic porous cement concrete,and also a discussion of the molding method of sample in the laboratory.When designing the low-plastic porous cement concrete,many factors should be considered such as fly ash addition,efficient water reducing agent addition and water-cement ratio and so on.An analysis is made of the effect of these factors on the slump,void and strength of low-plastic porous cement concrete.Based on the research,the component of low-plastic porous cement concrete is proposed.