A QUICK LOOK AT MULTISTAGE PROCESSING FOR THE PRODUCTION OF RECYCLED AGGREGATE

A Quick Look at Multistage Processing for the Production of Recycled Aggregate 

Crushed stone and other materials to create aggregates for the production of new, high-performance concrete is one of the common concepts of sustainable development. This is because it allows for extreme reduction in the volume of materials disposed of in landfills. Changes in gradation, maximum size, unit weight, and moisture content can all alter the character and performance of your concrete mix. However, contractors should also consider how switching from coarse aggregate can strengthen and/or lengthen the durability of mortar.

Recent studies have shown how recycled aggregatecovered with bigger, loose particles and crushed stone can actually avert good bonding between new cement matrix and recycled aggregates. A lot of focus has been shifted into how the crushing process can influence the quality of recycled concrete aggregate significantly.

Some of the detrimental effects of recycled aggregates that only go through a single crushing process include high porosity, low density and high water absorption. The material properties of recycled aggregate that have gone through a multistage crushing process, producing only fine aggregate, promise for extremely durable performance enhancement.

Ultrasonic pulse velocity tests done on mortar containing fine recycled concrete aggregate has shown extravagant amelioration in density and elastic properties, while improvement in flow value has also been recorded.

Unfortunately, the process of producing fine crushed aggregate uses a lot more energy than what simultaneously producing coarse and fine aggregate does, thus the production may cause an increased impact on the environment. However, since aggregates typically make up about 60 to 75 percent of the volume of a concrete mixture, its economic impact is extreme and engineers are continuously working on improving its environmentally friendly nature.