Effect of the Soil Nano Stabilisation 360 Additive on the Bearing Capacity of Cohesive Soils in Road Subgrades

Abstract

This research analyses the effect of the Soil Nano Stabilisation 360 additive on the bearing capacity of cohesive soils in the subgrade of the Pucará – Pampa Grande section of the road in Chota, Cajamarca. An experimental methodology was used, extracting samples from seven test pits dug along the road section. Three test pits were randomly selected, containing silty and clayey soils, and treated with two dosages of the additive: 0.025% NLF + 0.5% NPF and 0.045% NLF + 1.5% NPF, to evaluate their bearing capacity. Laboratory tests (Modified Proctor and CBR) showed that the application of SNS 360 increased the maximum dry density by 1.46% to 1.951 g/cm3 and reduced the optimum moisture content by 8.77% to 12.27%, improving soil compaction. Furthermore, the bearing capacity increased between 2.5 and 6.34 times in the CBR test, reaching values ​​of 31.40% and 37.40% for the first and second applications, respectively. The results confirm that the additive improves soil properties, with the dosage of 0.045% NLF + 1.5% NPF being the most effective, and its use is recommended in road and foundation projects on low-strength cohesive soils