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Properties Of Concrete

Plastic solid waste (PSW) of polymers (like: high density polyethylene (HDPE), low density polyethylene (LDPE), Nylon etc.) is creating new challenges, which in today's scenario are major research concerns. A sharp rise has been observed in production of different products based on different plastic material. This huge increase in plastic commodities also increases the waste generation thus creating new challenges. Some researchers have reported work in the field of PSW management with different recycling methods. This paper compiles the different research work done by researchers in this field of recycling and progress in recovery and management of PSW by different methods (i.e. Primary, secondary, tertiary and quaternary) along with the various identification/separation techniques. Further, this paper reviews the effect on properties of virgin and recycled HDPE/LDPE/Nylon PSW with different reinforcements like sand, natural fibre, hemp fibre, metal powder etc.

Recycling of plastic solid waste: A state of art review and future applications

Mechanical and durability properties of high-strength concrete containing steel and polypropylene fibers

Annual Book Of Astm Standards

Supplementary cementitious materials: New sources, characterization, and performance insights

Benefits of using blended waste coarse lightweight aggregates in structural lightweight aggregate concrete

Structural lightweight concrete plays an important role in the construction industry, especially for the high-rise buildings. It can only be produced using lightweight aggregates. Oil-palm-boiler clinker (OPBC) is a solid waste from the oil palm industry and could be used as lightweight aggregate in concrete mixture. However, the density of this lightweight aggregate is more than the density of the other types of natural and artificial lightweight aggregate. Therefore, the density of concrete was made of this lightweight aggregate is relatively high and is in the range of semi-lightweight concrete. In the current study, OPBC was partially substituted with a lighter lightweight aggregate namely oil palm shell (OPS) in a OPBC semi-lightweight concrete with high strength to further reduce the density of the concrete. To this end, OPBC was replaced by OPS with 0%, 20%, 40% and 60% by volume. Test results show that contribution of OPS in OPBC concrete reduces the density, while all the mechanical properties were also reduced. This occurs due to smooth surface texture of OPC and its lower density compared to OPBC. It was, however, found that OPBC semi-lightweight concrete containing more than 20% OPS turns to be structural lightweight concrete with high strength. Based on the mechanical properties and water absorption test results it is recommended that the optimum substitution of OPBC with OPS stays between 20 to 40%.

Payam Shafigh

Papers

Benefits of using blended waste coarse lightweight aggregates in structural lightweight aggregate concrete

Manufacturing of high-strength lightweight aggregate concrete using blended coarse lightweight aggregates

Properties of eco-friendly self-compacting concrete containing modified treated palm oil fuel ash

A comparison study of the mechanical properties and drying shrinkage of oil palm shell and expanded clay lightweight aggregate concretes

Oil palm shell lightweight concrete as a ductile material