祖庆贺1,2,臧 军2,沈晓冬1
祖庆贺,臧军,沈晓冬.粗粒度区间钢渣微粉在UHPC中的应用研究[J].混凝土与水泥制品,2019(8):1-4.
ZU Q H,ZANG J,SHEN X D.Application Study of Steel Slag Fine Powders with Coarse Particle Sizes Rang in Ultra High Performance Concrete (UHPC)[J].China Concrete and Cement Products,2019(8):1-4.
粗粒度区间钢渣微粉在UHPC中的应用研究
祖庆贺1,2,臧 军2,沈晓冬1
祖庆贺,臧军,沈晓冬.粗粒度区间钢渣微粉在UHPC中的应用研究[J].混凝土与水泥制品,2019(8):1-4.
ZU Q H,ZANG J,SHEN X D.Application Study of Steel Slag Fine Powders with Coarse Particle Sizes Rang in Ultra High Performance Concrete (UHPC)[J].China Concrete and Cement Products,2019(8):1-4.
摘 要:用粒度区间为45~80 μm的较粗钢渣微粉作为掺合料进行了UHPC的应用研究,试验结果表明,与基准混凝土相比,45~80 μm钢渣微粉在UHPC中以5%掺量取代水泥和复合掺合料后,UHPC的孔隙率降低、孔径分布得到优化、塑性黏度降低了42 Pa·s、流动性能提升(V漏斗排空时间减少了20 s)、28 d抗压强度提高了10~12 MPa、抗折强度提高了2~3 MPa。
Abstract:The coarse steel slag powders with particle sizes ranging from 45 to 80 μm was used in ultra high performance concrete (UHPC) to enhance the properties of concrete. The results show that compared with the reference concrete, when the cement and fly ash in concrete replaced by coarse steel slag powders (45~80 μm) with a concentration of 5%, the porosity of UHPC is reduced, the pore size distribution is optimized, the plastic viscosity is reduced by 42 Pa·s, the flow performance is improved (V funnel emptying time is reduced by 20 s), the 28 d compressive strength is increased by 10~12 MPa, and the flexural strength is increased by 2~3 MPa.
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