NSF (Nylon Synthetic Fiber) Effectiveness in Stabilizing Weak Subgrade Soil: An Experimental Investigation

Improvement in subgrade soil has always been an area of concern for highway and geotechnical engineers. Weak results a greater thickness the pavement layer, which increases cost construction. It further leads to large deformations, turn cause continuous deterioration paved surface. To solve this problem, various engineering solutions improvement mechanisms were previously proposed. This study was designed investigate stabilization weak with nylon synthetic fiber (NSF) compromising combination. Previously, some investigations used lower content higher length, whereas others length content. However, investigation uniquely stabilize consideration appropriate (10 mm 20 mm) (0.5%, 1%, 1.5%, 2.5%). The properties soil, effect NSF on aspect ratios, optimum critical ratio investigated laboratory. fibers compaction, CBR values, swell values also studied. Laboratory modified compaction tests showed that maximum dry density (MDD) increased increment content, moisture (OMC) remained constant. soaked natural 1.80% 8.95%, respectively. Due reinforcement, percentage increase value at is 265.3, 310.0, 282.8, 342.2 ratios 33.33, 66.67, 25, 50, respectively, reference soil. Also, decrease swelling 34.7, 52.75, 43.55, 36.9, Moreover, by keeping diameter constant decreases observed increasing reinforced substantial 1.5% 50 (length = mm, 0.4 mm). There Finally, concluded use solution soils regard performance problems.