Microstructural characteristics of ultra-high performance concrete by grid nanoindentation and statistical analysis
نویسندگان
چکیده
منابع مشابه
Microstructural Investigation of Heat-Treated Ultra-High Performance Concrete for Optimum Production
For optimum production of ultra-high performance concrete (UHPC), the material and microstructural properties of UHPC cured under various heat treatment (HT) conditions are studied. The effects of HT temperature and duration on the hydration reaction, microstructure, and mechanical properties of UHPC are investigated. Increasing HT temperature accelerates both cement hydration and pozzolanic re...
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Experiences in the development of Ultra High Performance Concrete found a very high flowability in concrete with low water powder ratio. Because of the high viscosity of the cement paste, compaction was necessary. To improve the compaction characteristics of the concrete the idea of adding coarse aggregate was developed. The first tests showed a good workability of the fresh concrete and a good...
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This paper aims to develop a numerical multiscale homogenization method for prediction of elasto-viscoplastic properties of a high performance concrete (HPC). The homogenization procedure is separated into two-levels according to the microstructure of the HPC: the mortar or matrix level and the concrete level. The elasto-viscoplastic behavior of individual microstructural phases of the matrix a...
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15 صفحه اولEffect of Reinforcement Type on the Tension Stiffening Model of Ultra-High Performance Concrete (UHPC)
Ultra-high performance concrete (UHPC) is a developing concrete and today is increasing to interest using it in structures due to its advantages such as high-compressive strength, modulus of elasticity, highly durability and low-permeability. Therefore, it is necessary to provide models for prediction of nonlinear behavior of this material. This study is aimed to investigate the tension-stiffen...
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ژورنال
عنوان ژورنال: Journal of Science and Technology in Civil Engineering (STCE) - NUCE
سال: 2021
ISSN: 2734-9489,1859-2996
DOI: 10.31814/stce.nuce2021-15(1)-08