Comparative Study of Settlement of Precast Deformed Mini Piles With Threaded and Plain Against Mangrove Wood Piles Based on Pile Settlement as Deep Foundation Reinforcement

Abstract

Foundation is one of the essential elements that cannot be avoided in the world of construction, whether in roadwork, bridges, buildings, or other structures. Bengkalis Island is one of the islands that has inadequate soil bearing capacity for construction, like other areas, so it requires piles to support the foundation. Increasing development will increase the demand for these piles as a supporting material for foundations, where concrete has the potential to be an alternative material used as a substitute for mangrove piles. Concrete is shaped like a mini pile and made into two types: plain and threaded. The results will show which type is best suited for use on the soil of Bengkalis Island. The concrete has a design quality of f'c 15 MPa, with a diameter of 5-8 cm and a length of 1 meter. Testing is carried out by applying a gradual load, starting from 5 kg, until the concrete is unable to withstand the load it supports. The results show that concrete with threads has the potential to be an alternative material, as it exhibits a smaller decrease compared to wood and plain concrete, with a decrease of approximately 0.81 mm under a given load of 125 kg. Based on this research, threaded concrete can become an alternative material to reduce the excessive demand for pile wood in the future.