Performance measurement the additions of sawdust in the brick with the expansive soils

The engineering characteristics of expansive soils are enhanced through the use of sawdust and sawdust ash as stabilizing materials in this study. Sawdust is a finely powdered wood product that is created during the manufacturing processes of new goods in the furniture and paper sectors. The environment is adversely affected by the storage, discharge, and combustion of this sawdust. This sawdust is combined with the expansive soil that is employed in the brick production process, as it is considered a form of refuse. The liquid limit and plastic limit increase as the sawdust and sawdust ash increase, while the plasticity index decreases as those constituents increase. The use of sawdust as an additive has also been shown to result in a more pronounced variation in soil strength and free swelling index compared to the corresponding values obtained with the sawdust ash. Expansive soils are notorious for their ability to expand and contract in response to fluctuations in moisture content, rendering them unsuited for construction without a suitable stabilization system. The objective of this investigation is to determine the efficacy of sawdust ash, a cost-effective agricultural waste, as a stabilizer for expansive soils. Various percentages of sawdust ash (ranging from 0 to 15%) were introduced into the soil matrix through systematic experimentation. The study's objectives were accomplished by conducting a series of laboratory tests, such as gradation analysis, compaction, and the California Bearing Ratio (CBR) test. The purpose of this investigation is to ascertain the impact of sawdust as an additive on the properties of expansive soil bricks. The most significant shrink-swell capacity is found in expansive soils. The expansive soil is amended with the sawdust in the following proportions: 0, 2.5, 5, 7.5, 10, 12.5 and 15%. The sawdust is then molded into bricks. The bricks that are manufactured from debris and expansive soils are lightweight, which leads to the production of lightweight bricks. The compressive strength of bricks produced with the expansive soils of sawdust proportions is greater than that of conventional bricks. This research provides a sustainable solution that is both environmentally friendly and economically viable in the context of construction practices. Graphical abstract