Changes of strength characteristics of pervious concrete due to variations in water to cement ratio

1st International Conference on Advances in Environmental Engineering

生态环境科学

Kovac, M.^1 ; Sicakova, A.^1

Technical University of Koice, Faculty of Civil Engineering, Koice

042 00, Slovakia^1

关键词: Cement paste;    Compressive and splitting tensile strengths;    Durability of concretes;    Influence of water;    Pervious concrete;    Strength characteristics;    Sustainable pavements;    Water to cement (binder) ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/92/1/012029/pdf
DOI  :  10.1088/1755-1315/92/1/012029

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Pervious concrete is considered to be a sustainable pavement material due to high water permeability. The experiment presented in this paper was aimed at study the influence of water to cement ratio on both the compressive and splitting tensile strength of pervious concrete. Typically, less water content in concrete mixture leads to less porosity of cement paste and thus it provides desirable mechanical properties. In case of conventional dense concrete, the lower is the water to cement ratio, the higher or better is the strength, density and durability of concrete. This behaviour is not quite clear in case of pervious concrete because of low amount of cement paste present. Results of compressive and splitting tensile strength of pervious concrete are discussed in the paper while taking into account values measured after 2 and 28 days of hardening and variations in water to cement ratio. The results showed that changes of water to cement ratio from 0.25 to 0.35 caused only slight differences in strength characteristics, and this applied to both types of tested strength.