TY - EJOU
AU - Ming, Yang
AU - Chen, Ping
AU - Wang, Yuanhao
AU - Li, ng
AU - Chen, Xuandong
AU - Sun, Pengliang
TI - Experimental Research of Concrete with Steel Slag Powder and Zeolite Powder
T2 - Journal of Renewable Materials
PY - 2020
VL - 8
IS - 12
SN - 2164-6341
AB - In order to increase use ratio of steel slag solid waste, the concrete containing steel slag powder and zeolite powder as admixtures was prepared by using
the orthogonal test method. The effects of water-binder ratio, sand ratio, steel slag
powder content and zeolite powder on working properties, mechanical strength
and chloride ion permeability of the concrete was studied. It was found that the
early strength of the concrete had a decrease with the mixing of steel slag and zeolite powders, but its later strength approached to pure concrete. Moreover, the
physical filling and pozzolanic activity of the admixtures increased the density
of the concrete, resulting in the improvement of the durability of the concrete
by the migration speed of Cl− reducing. The optimum mix ratio of C40 steel slag
powder-zeolite powder concrete is obtained, and which had the slump of 220 mm,
the 3 d, 7 d and 28 d compressive strengths of 27.8 MPa, 37.5 MPa and 48.4 MPa,
the 6 h electric flux of 950 C and the diffusion coefficient of 1.65 × 10−12 m2
/s.
KW - Concrete; steel slag powder; zeolite powder; compressive strength; chloride ion permeability
DO - 10.32604/jrm.2020.011929