Multi-Response Optimization of Post-Fire Residual Properties of High Performance Concrete.

Zoalfakar, Said Hussien; Elsissy, Mona Ahmed Refaat; Shaheen, Yousry Bayoumi

doi:10.21608/bfemu.2020.96285

Multi-Response Optimization of Post-Fire Residual Properties of High Performance Concrete.

Document Type : Research Studies

Authors

¹ Assist. Prof, Department of Mechanical Engineering, the Higher Technological Institute 10th of Ramadan City, EGYPT

² Assist. Prof, Nile Institute for Engineering, Mansoura, Egypt

³ Prof. of strength and testing of materials, Department of Civil Engineering, Faculty of Engineering, Menoufiya University, Shebin El-Kom, EGYPT

10.21608/bfemu.2020.96285

Abstract

This paper presents the results of an extensive experimental program undertaken to optimize compressive strength, ultrasonic pulse velocity (UPV), and abrasion wear of heated high performance concrete using Taguhi method and the utility concept. The design of experiments (DOEs) was first carried out by Taguchi method using a standard L 25(3⁵) orthogonal array of three factors with five materials parameters levels. The factors considered in this context of HPC were: fiber volume fracture, age time and post-heat temp. The prism specimens 60x60x300 mm with various volume fractions were casted, left for different age times (7 day, 28 day, and 56 day) then heated up to 200 °C, 400 °C, and 800 °C for a time of 3hrs then they were subsequently tested in the cooled conditions. Based on the experimental results, the materials parameter responses were analyzed.

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