Online ISSN: 2515-8260

Keywords : Concrete

Numerical Simulation Study On Load Deflection Of Reinforced Ultra High Performance Fiber Reinfoeced Concrete And Normal Concrete Beams Under Static Load

Anas Ammar Al- Kabasi; Ali Saif Al- Wardi; Qadir Bux alias Imran Latif; Nasrellah Hassan Ahmed

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 8, Pages 559-572

One of the biggest obstacles that prevents emerging concrete types to become widely adopted in construction is the deficiency of standardization background in practice codes for these materials, despite the fact it possess superior properties, such as Ultra-high Performance Fiber Reinforced Concrete (UHPFRC). In this study, Finite Element Analysis (FEA) is utilized to simulate the behavior of UHPFRC and Normal Concrete (NC) simply supported beams under static flexural loading. Abaqus software has been used in which a simplified version of the Concrete Damage Plasticity Model (CDPM) was chosen as a non-linear constitutive model. The model has been validated against conventional CDPM at global (load-deflection) and local (load-stain) levels. Reinforced UHPFRC beam models showed clearly matching response with the validity research paper (reference study) experimental findings. The response of UHPFRC beams has been compared to NC beams. This comparison has been explained in detail and checked with similar material comparisons in the literature. The proposed study has revealed and compared the distribution of cracks in the form of tension and compression damage for both materials. As a conclusion, modelling is an effective way to predict the behavior of concrete beams in which the relative local response was captured in reinforcement bars. 

Investigation on the Conversion of Sea Sand into Construction Sand using STS and FA Methods

Hemant Singh Parihar; Deepak Varshney

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 4, Pages 352-355

The most significant material of construction is concrete. This material has been termed as composite material comprising of fine aggregate, water, coarse aggregate & cement. The term fine-aggregate has been a pre-requisite in huge amount of concrete production. Usually, sand from river has been utilized as fine amount. Because of enhancement in concrete usage in construction domain, the requirement for sand is enhanced rapidly. The confines have been fed on huge scale river mining from beds of river. Hence, the simulation study has been performed on concrete cement robustness by substituting partially sand of sea with sand of river in the form of fine amount. Furthermore, in this contribution, soaked, sea sand and sand that is heated has been utilized. The sand of sea in fine amount has been substituted as per multiples of 25. This manuscript prominently examines the split TS (tensile strength) and CS (compressive strength) of concrete, where sand from sea has been utilized as fine soil that is completely or partially substituted and examined for 28 & 7 days. Also, the concrete conduct by partial substitution of fine amount with sand from sea has also been researched.