A study on the performance of concrete containing recycled aggregates and ceramic as materials replacement

Abstract

Abstract. Natural fine aggregate materials are commonly used in development and commercial construction in Malaysia. In fact, concrete production was increased as linear with the growing Malaysia economy. However, an issue was production of concrete was to locate adequate sources of natural fine aggregates. There lot of studies have been conducted in order to replace the fine aggregate in which natural fine aggregate replace with the waste material in concrete preparation. Therefore, this study aims to utilize the Recycled Concrete Aggregate (RCA) and ceramic waste which has great potential to replace the natural aggregate in concrete mix with different type of method, admixture, and parameters. This research were focused on compressive strength and water absorption test to determine the optimum mix ratio of concrete mix. The concrete aggregate was chosen due to improvement capillary bonding mechanisms and ceramic presented similar strength compared to the conventional concrete using natural aggregate. Percent of replacement have been used in this study was at 25%, 35% and 45% of the RCA and 5%, 10% and 15% for ceramic, respectively. Furthermore, this research was conduct to find the optimum percentage of aggregate replacement, using water-cement ratio of 0.55 with concrete grade 25/30. The best percentage of replacement was the RCA35% C15% with the compressive strength of 34.72MPa and the water absorption was satisfied.

The mechanical properties of brick containing recycled concrete aggregate and polyethylene terephthalate waste as sand replacement

“…According to Kumar et al [7], in order to increase the compressive strength of RFA, these can be improve by the addition of fiber. In addition, aggregates are represented for 70-80% of the concrete components therefore it will be beneficial on preserves a recycle demolished concrete as natural aggregate besides to solve the environmental problems [8][9].…”

Development of high strength recycled aggregate concrete-composite effects of fly ash, silica fume and rice husk ash as pozzolans

“…This is because no additional water was provided to satisfy the absorption demand of RAs. Similar studies done on RAC reports slump values decreasing with increasing RA replacement ratio, given that no additional water is added to account for absorption [68,70]. In addition, this study uses crushed RA having more angular and elongated surface rheology which makes the RAC mixes less workable compared to NA mixes.…”

Ground improvement using granular pile anchor system: resistance to heave and uplift pressure

“…Due to this dual repetitions, civil engineering structures such as residential buildings, pavement, sidewalks and lightweight structures constructed on such soil that resist movements from the soil are severely damaged resulting in enormous economic losses [5]. The cost in repairing the damage or constructing new structures with stonger concreting works urged for more viable remedies prior to foundation construction [6].…”