Pullout resistance of bearing reinforcement embedded in marginal lateritic soil at molding water contents

The effect of molding water contents (on dry and wet sides of optimum water content) on the pullout resistance mechanism of the bearing reinforcement embedded in a marginal lateritic soil is investigated in this paper. The total pullout resistance is contributed from the pullout friction and bearing resistances. The pullout friction resistance is approximated from the soil shear strength and interaction factor, α. The peak and residual interaction factors (αp and αr) are independent of molding water contents tested and are approximately 0.63 and 0.46, respectively. The bearing pullout resistance of a single isolated transverse member is dependent upon both shear strength and failure mode and can be approximated from the modified punching shear solution with various angles of transformation, β. The β   values of the compacted soil at 0.67≤w/wOWC≤1.00.67≤w/wOWC≤1.0 are essentially constant and equal to π/2π/2 (where wOWC is the optimum water content). For 1.0