Pumice Stone in Sustainable Eco-Friendly Lightweight Concrete: A Review
摘要
The increasing use of concrete leads to the consumption of large quantities of cement and aggregates. The cement production process results in the release of carbon dioxide into the atmosphere, which is why alternatives to cement and aggregates have been developed. This review investigates the use of pumice as a cementitious material and aggregate. A total of 95 research studies were used and analyzed. Pumice is a naturally occurring, lightweight, sponge-like raw material formed when molten lava cools and hardens rapidly. It can be used as a cementitious component in the production of blended cements or as an aggregate in the production of lightweight concrete, provided proper preparation is carried out. This article primarily focused on the effects of pumice as aggregate and pumice powder (PP) as cement on the properties of ordinary concrete, and the effect of polypropylene in concrete containing pumice powder (PP) during curing and after curing. In addition, several modification techniques were used to alter some of the properties of conventional concrete containing PP and pumice as aggregate. According to this review, there are several advantages to using pumice stone as aggregate or pumice powder as cement in a conventional concrete matrix. These advantages include improved fire and corrosion resistance, increased thermal and acoustic insulation, reduced unit weight, reduced drying shrinkage, reduced heat of hydration, and reduced porosity, water absorption, and permeability. However, they negatively impact mechanical strength, workability, and carbonation rate. According to this review, the use of pumice stone powder as aggregate or in concrete manufacturing has a promising future.