Unconfined Compressive Strength and Splitting Tensile Strength of Lime Soil Modified by Nano Clay and Polypropylene Fiber

Here we study the effects of nano clay and polypropylene fiber on unconfined compression splitting properties lime soil. Through a series compressive strength (UCS) tests (STS) tests, mechanical soil (LS), modified (NLS), (FLS), composite (NFLS) are analyzed, volume calculation formula each phase in NFLS is deduced. Nano content αn, porosity η LVi as independent variables, prediction models UCS STS were established. Furthermore, microstructure LS, NLS, FLS was analyzed by scanning electron microscope (SEM). It can be concluded that (1) with increase content, LS gradually increase. With first increases then decreases, while NLS optimal 0.75%. (2) η/LVi meet linear relationship. The empirical formulas established this paper have accuracy less than 10%. predicted according to dry density sample component material. (3) fill pores promote pozzolanic reaction between soil, mainly plays reinforcing role so improve LS. In NFLS, interfacial its STS. This provide reference for modification technology