ABSTRACT
The purpose of this study is to investigate the water retaining behaviour of lightweight aggregate concrete and the effect of polypropylene fibres upon its addition in Lightweight Aggregate Concrete (LWAC) mix in the overhead water tank of 1000 gallons. The material was fabricated and tested under different conditions. The observations concluded that the behaviour of this material is very good in water retention and temperature control. Moreover, the unit weight of LWAC reduced to 1890 kg/m3 which is 21% less than NWAC which is of paramount importance. Furthermore, compressive strength and load bearing capacity of FLWAC was not compromised as evaluated during this academic study. It is observed that strength has increased by addition of polypropylene fibres and no leakage was there, even after the testing of large period no seepage has been seen, whereas the cost of the tank prepared by FLWAC Tank was found to be 18% to 20% less than the cost of NWAC. Thus it can be concluded that LWAC along with polypropylene fibres yielded impressive results and finally, it is concluded that this material can be used for future work such as construction of prefabricated U channels for storm water drainage in katchi abadies etc.