These two experiments show that clay tends to deform more compared to sand. Sand typically provides better strength, and it is considered a better foundation than clay. Clay, especially when it is wet/saturated, deforms a lot, which can cause many problems in engineering and construction. Soil mechanics, geotechnical engineering and civil engineering explain the fundamentals of soil behaviour so that engineering infrastructure can be safely designed and build on such soils.#civilengineering #geotechnicalengineering #soilmechanics