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Structural and Environmental Performance of Stabilized Dhahran Soil for Sustainable Construction
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DOI：10.3390/eng7040156.png)
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Abstract
En 中文
Earth has long served as a primary construction material because of its easy availability and low environmental impact. However, reliability of this material depends on the stabilization to enhance its strength, durability, thermal and acoustic performance. This study investigates the structural and environmental suitability of stabilized Dhahran soil in sustainable consruction. The soil samples were collected from the Eastern Province of Saudi Arabia and stabilized using cement and lime at dosages of 2.5%, 5%, 7.5%, and 10%. Experimental evaluations included unconfined compressive strength (UCS), durability under wet-dry cycles, thermal conductivity, and sound absorption. Results revealed that 10% cement stabilization achieved a UCS of 6.1 MPa after 28 days, while lime-stabilized samples failed to meet the 2 MPa structural threshold. Durability tests showed that as little as 5% cement provided sufficient resistance, with minimal weight loss under repeated cycles. Cement-stabilized specimens exhibited higher sound absorption at low frequencies, whereas lime-based mixes offered more balanced broadband performance. Thermal conductivity (TC) increased moderately with higher cement content, ranging from 0.311 to 0.388 W/m & centerdot;K, reflecting improved densification and heat transfer efficiency. Overall, the findings demonstrated that Dhahran soil, when cement-stabilized, becomes a durable, structurally viable, and environmentally suitable building material, supporting its potential as a sustainable construction solution in arid regions.
Keywords:
stabilized earth construction
sustainability
compressive strength
durability
thermal conductivity
sound absorption
geotechnical properties
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