Use of construction and demolition wastes in compaction piles for soil improvement

Alexandre Duarte Gusmão, Eurico de Lira Araújo, Stela Fucale Sukar

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Ground Improvement/Remediation

ABSTRACT: The increasing waste production in civil construction, whether in new constructions or demolitions, has become a growing concern. The purpose of this research was to investigate some physical and mechanical properties of construction and demolition waste CDW, checking its performance when applied to improving soils using compaction piles to replace natural aggregate. With this in mind, laboratory characterisation, compaction and direct shear tests were carried out, as well as an experimental compaction mesh consisting of CDW and conventional piles on site, when it was possible to drill boreholes and perform plate bearing tests. Accordingly, it was possible to confirm the good performance of CDW when applied for this purpose, since both its laboratory and onsite results showed even better behaviour than the natural aggregate.

RESUMEN: El aumento de la producción de residuos en la construcción civil, ya sea en nuevas construcciones o demoliciones, se ha convertido en una preocupación creciente. El propósito de esta investigación fue investigar algunas propiedades físicas y mecánicas de los residuos de construcción y demolición - RCD, comprobando su funcionamiento cuando se aplica a la mejora de los suelos con pilotes de compactación para reemplazar materiales naturales. Con esto en mente, la caracterización de laboratorio, compactación y ensayos de corte directo se llevaron a cabo, así como una malla de compactación experimental que consiste en RCD y pilas convencionales en el lugar, cuando fue posible perforar pozos y realizar pruebas de placa de apoyo. En consecuencia, fue posible confirmar el buen desempeño de RCD cuando se aplica para este propósito, ya que tanto su laboratorio y los resultados in situ mostraron un comportamiento incluso mejor que los materiales naturales.

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Cite this article:
Alexandre Duarte Gusmão; Eurico de Lira Araújo; Stela Fucale Sukar (2011) Use of construction and demolition wastes in compaction piles for soil improvement in GEO2011. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO11Paper1064,author = Alexandre Duarte Gusmão; Eurico de Lira Araújo; Stela Fucale Sukar ,title = Use of construction and demolition wastes in compaction piles for soil improvement,year = 2011}