Influences of coarse aggregate on dynamic mechanical behaviors of ultrahigh-performance cementitious composites

RONG Zhi-dan; SUN Wei

doi:10.11883/1001-1455(2009)04-0361-06

Volume 29 Issue 4

Sep. 2014

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Article Navigation > Explosion And Shock Waves > 2009 > 29(4): 361-366

RONG Zhi-dan, SUN Wei. Influences of coarse aggregate on dynamic mechanical behaviors of ultrahigh-performance cementitious composites[J]. Explosion And Shock Waves, 2009, 29(4): 361-366. doi: 10.11883/1001-1455(2009)04-0361-06

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RONG Zhi-dan, SUN Wei. Influences of coarse aggregate on dynamic mechanical behaviors of ultrahigh-performance cementitious composites[J]. Explosion And Shock Waves, 2009, 29(4): 361-366. doi: 10.11883/1001-1455(2009)04-0361-06

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Influences of coarse aggregate on dynamic mechanical behaviors of ultrahigh-performance cementitious composites

doi: 10.11883/1001-1455(2009)04-0361-06

1.
Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China

Publish Date: 2009-07-25

Abstract

Abstract

Ultrahigh-performance cementitious composites (UHPCC) with 200 MPa compressive strength were prepared by substitution of ultrafine industrial waste powder for large quantity of cement by weight and replacement of ground fine quartz sand with natural fine sand whose maximum particle diameter was 2.5 mm. And in the prepared composites, basalt stones with high elastic modules and high strength were added, whose maximum particle diameter was 10 mm. High-speed impact compressive experiments were performed on the ultrahigh-performance steel-fiber-reinforced cementitious composites (UHPSFRCC) with different fiber volume fractions by the split Hopkinson pressure bar technique. Strain rate, fiber volume fraction and coarse aggregate can influence the impact resistance of the UHPSFRCC. The impact resistance of the UHPSFRCC is improved with the increase of fiber volume fraction and the dynamic strength of the UHPSFRCC is advanced with the increase of strain rate. The dynamic performances of the UHPSFRCC are improved with the adding of coarse aggregates of basalt stones.
- solid mechanics,
- dynamic performance,
- split Hopkinson pressure bar,
- ultra-high performance cementitious composites,
- coarse aggregates,
- strain rate

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