SUSTAINABILITY OF NO-FINE CONCRETE WITH FIBRE REINFORCEMENT

摘要

No-Fine Concrete (NFC) is generally used to drain the excess water into the ground, from the earth's surface during heavy rainfall conditions. Durability of this type of concrete is a potential problem, which is governed by several factors such as lower values of compressive strength, high chance of clogging and less abrasion resistance under dynamic loading. This study is aimed to develop a more durable and sustainable NFC mixture to withstand abrasion load. The effects of different aggregate size, S1 (9.5 to 12.5 mm) and S2 (12.5 to 16 mm) with macro-synthetic fibre of varying lengths L1, L2 and L3 (i.e. 36, 47 and 60 mm) were examined and their properties were discussed. In this study, Loss-Angeles abrasion test setup (ASTM C1747) was used to evaluate the toughness, reveling index and Rotating-Cutter drill test setup (ASTM C944) was used to calculate the resistance against abrasion of NFC concrete mixtures such as disintegration, degradation at 28 days. From this research, it was found that the addition of fibre in NFC does not affect the strength and permeability but does affect the abrasion resistance of the concrete in a significant volume. It was also observed that the influence of fibre length was not as substantial as that of aggregate size.