Affiliation:
1. Advanced Cementitious Composites Lab, Jiangnan University School of Environmental and Civil Engineering, Wuxi 214000, China
2. Jiangsu Key Laboratory of Environmental Impact and Structural Safety, Engineering, Xuzhou 221000, China
3. School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore
Abstract
The Modified Andreasen and Andersen model (MAA model) is commonly chosen to realize condensed particle packing in ultra-high-performance concretes (UHPCs). In the MAA model, the
(distribution modulus) is a parameter that plays a critical role in the UHPC matrix design. The objective of this study is to figure out the influence of the
for the compressive strength of UHPC-containing coarse aggregate (UHPC-CA). Therefore, a series of investigations were conducted, covering the following aspects: first, the traditional design procedure, based on the MAA model, of UHPC-CA is revised by taking water and steel fibers into account in the particle packing system. The results show that the revised design process of UHPC-CA yielded more excellent products with better workability and compressive strength. Second, different
values which are 0.2, 0.21, 0.22, 0.23, and 0.25 are employed. The results show that when
is 0.25, the maximum compressive strength can be achieved. However, the flowability decreases with the increase of the
value. Third, an empirical calculation of the optimal coarse aggregate content in the light of different
values and maximum size of coarse aggregate are proposed.
Funder
Natural Science Foundation of China
Subject
Civil and Structural Engineering
Cited by
1 articles.
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