The effect of the geocell layer and the geocell with geogrid layer on the settlement Behavior of sand under static and cyclic loads is investigated in this experimental study. The parametric experiments were conducted to examine the effects of reinforcement type and spacing between reinforcement on footing settlement Behavior. Additionally, to ascertain how settlement varies under various circumstances, the load-settlement Behavior of square footings installed over both reinforced and unreinforced sand beds was investigated. According to the experimental investigation, the foundation resting over geocell-reinforced sand showed an improvement of about 150% in the sand bed's bearing capability. The reinforced sand bed sustained loading cycles twice that of the unreinforced sand. The results showed that construction and demolition waste performed best among the infill materials that were tested. When construction and demolition waste is used as an infill material, there is about a 94% increase in elastic uniform compression coefficient value and about a 30.4% increase in sand bed load-carrying capability. For waste foundry sand and a mixture of construction and demolition waste with waste foundry sand (50% each), there is about an 8.86% and 16.11% increase in the value of load carrying capacity as compared to when geocell is infilled with sand. For the geocell-geogrid reinforced sand bed, the maximum increase in the elastic uniform compression coefficient value is 17.9% with a 28.61% decrease in settlement value compared to when geocell is used alone in the sand bed.

The reinforced soil is a very cost-effective technique to improve the stability and control the deformation by inserting tensile elements in the soil. When load acts on the composite soil reinforcement system, soil generates tensile loads in the reinforcements. These loads restrict the soil movements and impart the additional shear strength. Geogrid is one of the geosynthetic materials used to reinforce soils. Handling and disposal problems of flyash can be reduced by using flyash as a construction material in geotechnical engineering applications. ADTA (automated dynamic testing apparatus) is a computer-controlled device runs on a Movicon software and is used in the present investigation to apply the cyclic load on the footing. Both unreinforced and reinforced flyash beds are prepared by manual compaction at its MDD and OMC. The flyash beds having reinforcement at a spacing of 0.3 times width of footing perform better than the reinforcement at a spacing of 0.4 times width of footing for all loading conditions for footing. Footing embedded at a depth of two times of the width of footing performs better by taking more number of loading cycles and undergoing less settlement when compared to footing embedded at a depth of one times the width of square footing.