Plastic wastes are a major hazard for the environment and their use in construction industry is increasing day by day. The drawback of plastic concrete an exceptional reduction strength workability. This research work explores effect sand coating on two types recycled aggregates, high-density polyethylene (HDPE) electronic-wastes (E-wastes), as partial replacement natural aggregates. ranged fro...

In this study, natural coarse aggregates were replaced with recycled concrete aggregate (RCA) in 0 %, 50 and 100 % extracted from construction demolition wastes. Their recycling could lead to a greener resolution for preserving the environment paving way sustainability through solid waste management. The compressive strength of RCA at 365 days was reduced by 3.97 4.88 6.81 respectively, compare...

a new model is proposed for two-dimensional simulation of the concrete fracture in compression. the model generated by using the voronoi diagram method and with considering random shape and distribution of full graded aggregates at the mesoscopic level. the aggregates modeled by combining irregular polygons, which then is placed into the concrete with no intersection between them. by this new m...

Construction solid waste has become an important environmental pollution source in the city, and treatment application of construction focus attention. recycled aggregates have defects such as high water absorption micro cracks, which affect its extensive application. In order to improve utilization rate aggregates, influence different replacement rates on mechanical properties concrete is stud...

This experimental study is aimed at evaluating the hydrodynamic abrasion resistance of concrete produced with recycled waste glass as coarse aggregates. The underwater (ASTM C1138) method used to test concretes containing 0%, 12.5%, 25%, 50% and 100% aggregates replacement for natural To benchmark performance, glass-aggregate compared that a high-strength mixture typically in coastal defences w...

Abstract The world today has started facing bigger problems related to the concrete industry, especially with becoming most extensively used construction material in world. At a time like this, where more eco-friendly substitutions are stringent, it calls for comprehensive approach producing recycled from aggregates (RCA). This study is an extension previous studies involving composite utilizat...

Marine snow aggregates are sites of elevated biological activity. This activity depends on the exchange of solutes (O2, CO2, mineral nutrients, dissolved organic material, etc.) between the aggregate and the environment and causes heterogeneity in the distribution of dissolved substances in the ambient water. We described the fluid flow and solute distribution around a sinking aggregate by solv...

The engineering of robust protein/nanomaterial interfaces is critical in the development of bioelectrocatalytic systems. We have used computational protein design to identify two amino acid mutations in the small laccase protein (SLAC) from Streptomyces coelicolor to introduce new inter-protein disulfide bonds. The new dimeric interface introduced by these disulfide bonds in combination with th...