Chen, F.H. (1975) Foundations on Expansive Soils. Elsevier ... - SCIRP
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Drilled piers (also called caissons) are a very common solution in expansive clay. A deep, reinforced concrete column is drilled down and poured, with its base socketed into a stable, non-expansive stratum below the zone of seasonal moisture change. The principle is to transfer the structural load to a stable bearing layer, bypassing the problematic, expanding upper soils. foundations on expansive soils chen pdf
: implementing waterproof aprons, sand drains, and adequate drainage to maintain constant moisture levels and prevent "heave". Soil Stabilization
Foundations on Expansive Soils - 1st Edition | Elsevier Shop Chen, F
: Swelling soil can apply significant horizontal pressure against foundation walls. Key Identification Tests : Chen emphasizes the Swell Pressure Test
Uneven moisture distribution causes differential lifting, which cracks concrete slabs, distorts doors and window frames, and fractures brick veneer. - SCIRP Disclaimer: This article is for educational
This is perhaps the most valuable section of the book for practicing engineers. Chen presents detailed case studies of real-world structural distress, including the problem, the investigation, the proposed solution, and the degree of success of the remediation. The case studies cover:
Chen's work on foundations on expansive soils is grounded in the theoretical background of soil mechanics and geotechnical engineering. His research drew on the principles of effective stress, consolidation, and shear strength to develop a comprehensive understanding of the behavior of expansive soils.
Chen’s approach focuses on the volume changes of clay-rich soils (like those containing montmorillonite ) as they respond to moisture.