The influence of concrete mixture's rheological properties on the quality of formed concrete surfaces

FIBRE CONCRETE 2017

Daukys, M.^1 ; Klovas, A.^1 ; Venkauskas, L.^1

Department of Construction Technologies, Kaunas University of Technology, Studentu str. 48, Kaunas

LT-51367, Lithuania^1

关键词: Concrete surface;    Fine aggregates;    Fine particles;    Image analysis method;    Mixture preparations;    Plastic viscosity;    Rheological property;    Total aggregates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/246/1/012037/pdf
DOI  :  10.1088/1757-899X/246/1/012037

来源: IOP

【 摘 要 】

This study mainly lays emphasis on examining the influence of concrete mixture rheological properties on the quality of formed concrete surfaces. Mixture's fine aggregate change was taken into the consideration. Over the course of concrete mixture preparation the inner ratio of fine aggregate (sand: fraction of 0/1 and 0/4) was changed. The idea was to increase the quantity of fine particles in the total aggregate's volume therefore quantity of sand (fraction 0/1) was increased. Six different concrete mixture's compositions were designed as well as three specimens (concrete piles of 1m2surface area) were casted. Rheological properties of concrete mixtures were analytically obtained and the quality of formed concrete surfaces was evaluated using image analysis method "BetonGUY 2.0". As can be obtained from the dependence between concrete mixture rheological properties and its formed surface quality, the increase of concrete mixture's yield stress and plastic viscosity reduces the quantity of air pores on formed concrete surfaces.