Effects of Packing Density and Calcium- Silicon Ratio of Ternary Cementitious Material System on Strength of Reactive Powder Concrete

Abstract:

Aim & Goff model was used to predict the packing density of cementitious material including cement, ultra-pulverized fly ash and silica fume. The mix proportions of reactive powder concrete (RPC) with different packing density and calcium-silicon ratio of cementitious material were designed, and a strength test was carried out. The study results reveal that the flexural strength and compressive strength of RPC are related to the packing density and calcium-silicon ratio of cementitious material. For the mix proportion of RPC with the calcium-silicon ratio of 1.179, calcium hydroxide reacts with silicon dioxide fully, and the superfluous ultra-pulverized fly ash and silica fume fill the voids of RPC. The packing density of its cementitious material is the largest, and its strength approaches summit.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 197-201
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.197
• Online since: May 2011
• Authors: Tao JI, Bao Chun Chen, Feng Li, Yi Zhou Zhuang, Zhi Bin Huang, Yong Ning Liang
• Keywords: Calcium- Silicon Ratio, Packing Density, Reactive Powder Concrete (RPC), Strength

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