Journal of University of Babylon

Bifacial module Photovoltaic.‎ PVSyst symulation

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Equivalent Stress Block Flexural Strength including Ultra High Performance ‎Concrete (UHPC) and the development of their resistance ratio of longitudinal steel bars and volumetric fraction of steel fibers. The present ‎flexural strength equation gave very similar results to the experimental.‎patibility Strain ComDespite the development of modern building materials the calculations of the flexural ‎strength of structural members remained somewhat complicated and far adequate accuracy. The ‎aim of this study is to present a simple accurate practical model for calculating the flexural ‎strength by using compressive and tensile equivalent stresses with strain compatibility inclusion. ‎Compressive equivalent stress was derived in a manner similar to Whitney Block in normal ‎concrete by converting trapezoidal stress distribution into rectangular stress and providing an ‎equation for both ratios of equivalent height to neutral axis (β) and the ratio of rectangular and ‎trapezoidal stress intensity (k3). The tensile stress was also modeled as equivalent block. Nine ‎UHPC beams were fabricated and casted to study three main variables UHPC‎ which are compressive ‎strength Whitney Block