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The purpose of this study is to evaluate the compressive strength and moulding moisture content (MMC) of unstabilized compressed earth blocks (USCEB) made from two locally accessible soil types, Than Mann (TM) and Karambai (KB). In accordance with IS 2720 (parts 4 and 5) and IS 383 standards, the physical characteristics of TM and KB are also determined. Using the ITGE VOTH machine, 24 sets of 3 USCEB, each measuring 230 × 190 × 100 mm, are cast using TM & KB in the following ratios: 80:20, 70:30, 60:40, and 50:50. The moisture contents (in %) of each mixture are 5, 6, 7, 8, 9, and 10 accordingly. For a minimum of 10 days, the created USCEB is stored outside in normal weather conditions. Based on the findings, it can be shown that in all of the mixes, the dry density rises as MMC increases up to a certain moisture content before beginning to fall. This is termed as “optimal moisture content” (OMC). Additionally, it has been found that the mixture corresponding to a 60:40 ratio produces the highest dry density for a given MMC. The maximum dry density for this mixture is also known as the maximum dry density. The compressive strength test for the 60:40 mixture was then conducted. The USCEB's maximum compressive strength of 9% moisture content was obtained. This study will enable us to determine how much water should be supplied to the soil mixtures in the USCEB for proper compaction during moulding. This research provides evidence for the contribution of MMC to USCEB’s dry density. It is also proved that the proportion of clay and sand in a particular soil influences the OMC at which is to be conducted.

The construction industry is always seeking ways to optimize building materials for better performance and efficiency. One of the ways to achieve this is through the use of voided concrete slabs. Voided concrete slabs have been used to reduce the weight of concrete structures, while maintaining their structural integrity. These slabs have a lower weight compared to traditional concrete slabs and they are therefore more efficient in terms of material usage and handling during construction. The use of traditional concrete slabs in construction is not sustainable due to its high carbon footprint and heavy weight, which results in higher construction costs. The aim of this study is to investigate the production of voided concrete slabs using geopolymer technology for more sustainable and cost-effective alternative to traditional concrete slabs. In recent years, geopolymer technology has been utilized in the production of voided concrete slabs. The aim of this study is to explore the performance of voided concrete slabs utilizing geopolymer technology. The study evaluates the density, compressive and flexural strength of slabs and compares the results to traditional concrete slabs. The results of the testing show that geopolymer voided concrete slabs have a lower density and a higher compressive strength and flexural strength compared to traditional concrete slabs. [ABSTRACT FROM AUTHOR]