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Online since: January 2013
Authors: Ru Guang Li, Peng Yao, Kun Tian, Sheng Yin Zhou
Raw material
1) Cement: Wuhan Yadong cement company, yang fang brand P·O 42.5 cement, the compressive strength of 28d is 46.8MPa, the flexural strength is 8.2MPa, specific surface area is 348 m2/kg;
2) Fine aggregate: The middle sand of Chang jiang river, fineness modulus is 2.5~2.7, the apparent density is 2584 kg/m3, bulk density is 1502kg/m3, mud content is 0.8%;
3) Coarse aggregate: Steel section, apparent density is 7500kg/m3, diameter is 10 mm and length is 5~20mm, bulk density is 3560kg/m3; The length of granite gravel is 5~20mm, apparent density is 2643kg/m3, bulk density is 1522kg/m3, bibulous rate is 0.83%;
In the paper, the steel slag from wuhan iron and steel enterprise, had deposit for one year, its main chemical composition in table 1:
Table 1 Steel slag chemical composition (w/%)
Chemical composition
SiO2
Fe2O3
Al2O3
CaO
MgO
FeO
P2O5
content(%)
15.18
7.23
3.38
45.36
13.27
14.13
0.71
4) Slag: Wuhan steel granulated blast furnace water quenched slag, density is 2860