Sustainable Mediterranean Construction

ASSESSING THE DUCTILITY OF HETEROGENEOUS MATERIALS: APPLICATION TO CEMENT-STABILIZED SOILS

Authors

 K. Bouassria, A. Ammari, N. Zakham, M.Cherraj, H. Bouabid

Keywords: 

Soil, cement, ductility, compressive strength, damage coefficient, elasticity-damage coupling.

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Abstract

Ductility, or deformability, plays a key role in supporting loads and preventing cracks that inevitably lead to structural damage. This paper proposes a relative ductility factor as a quantitative tool, derived from an elasticitydamage coupling model. It is expressed as a simple function of a single parameter—the damage coefficient—obtained from stressstrain curve characteristics. A ductility-fragility diagram is presented to assess the deformability of a given material. The study examines four different cement-soil materials with varying clay and gravel weight fractions. Furthermore, ductility is analyzed according to cement content (0%, 4%, 7%, and 10% by mass). These values are compared to the relative ductility factor of concrete, used here as a reference material for building applications. Results show that ductility decreases with the gravel fraction in the soil material and with the addition of cement. In contrast, the relative ductility factor increases with clay fraction, which is quantified to enhance accuracy in deformability analysis. The relative ductility factor, used in conjunction with a ductility diagram, serves as an index for classifying cement-soil materials based on deformability, and we believe this approach can be extended to other heterogeneous materials with similar behavior.

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SMC N.20 2024

SMC MAGAZINE N. TWENTY/2024

001_COVER AND INDEX

005_ ARCHITECTURE AND SOCIAL WELFARE
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015_ BOARDS AND INFORMATION

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022_ INTEGRATIONG SUSTAINABILITY AND COMMUNITY. Architecture of Participation in Monticelli d’Ongina
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028_ TEMPORARY HOUSING FOR MIGRANTS. The cornerstones of a renewed welfare network
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034_ BEYOND ACCESSIBILITY: UNIVERSAL DESIGN FOR HEALTHY AND INCLUSIVE PUBLIC SPACE
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041_ MANUFACTURED LANDSCAPES AND SPATIAL JUSTICE: A Territorial Extractivism Perspective on Campi Flegrei
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049_ ADDRESSING SPATIAL STIGMA. Dignity as a design principle
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054_ DEVELOPMENT OF MODELLING APPROACH TO ANALYSE FUEL POVERTY USING GIS TOOL
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062_ ARCHITECTURE IS/AND POLITICS, ARCHITECTURE IS/AND ETHICS
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067_ FOR EVERYONE AND FOR EACH INDIVIDUAL: THE DESIGN CHALLENGE FOR THE BUILT ENVIRONMENT
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072_THE TRANSITION OF DESIGN AS A TOOL FOR SOCIAL TRANSFORMATION: perspectives from the Global North and Global South
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114_LATEST GENERATION URBAN INNOVATIONS. The case of the technological center of San Giovanni a Teduccio in Naples
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123_METHODOLOGICAL APPROACH TO RENOVATE BUILDINGS THROUGH CIRCULAR DESIGN STRATEGIES
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131_ ASSESSING THE DUCTILITY OF HETEROGENEOUS MATERIALS: APPLICATION TO CEMENT-STABILIZED SOILS
K. Bouassria, A. Ammari, N. Zakham, M.Cherraj, H. Bouabid