Porosity/Cement Index over a Wide Range of Porosities and Cement Contents
Publication: Journal of Materials in Civil Engineering
Volume 34, Issue 3
Abstract
The adjusted porosity/cement index showed to be an interesting empirical rational dosage methodology for soil-cement purposes as it inputs into a single parameter the role of the compactness and the amount of cement on the strength of such materials. Ergo, by establishing a specific , the same unconfined compressive strength result could be obtained through several combinations of cement contents and porosity values. Still, such an assertion has not yet been verified for a broad range of distinct dosages within specific values. The present research intends to address this gap by conducting unconfined compressive strength tests on distinct mix designs established within seven specifics values (i.e., 45, 40, 30, 35, 25, 22.5, and 20). At least three distinct dosages were assembled within each adopted porosity/cement index value for compacted clayey sand-cement mixtures. The results within each were evaluated by means of Tukey´s multiple comparison test in order to assess the statistical equivalence of the attained strength results for each mixture design setting (dosage). In general, statistical differences were encountered among some dosages within each index. Nonetheless, all of the strength results could be successfully correlated to this index with a great coefficient of determination ().
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Data Availability Statement
Some or all data or models used during the study are available from the corresponding author by request.
Acknowledgments
The authors wish to express their appreciation to Fundação de Amparo à pesquisa do Estado do Rio Grande do Sul (FAPERGS)/Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 12/2014–Programa de Apoio aos Núcleos de Excelência (PRONEX) (Project No. 16/2551-0000469-2), Ministério da Ciência e Tecnologia (MCT) CNPq [Editais Instituto Nacional de Ciência e Tecnologia (INCT)-Reabilitação do Sistema Encosta-Planície e Desastres Naturais (REAGEO), Universal & Produtividade em Pesquisa], and Ministério da Educação-Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (MEC-CAPES) (PROEX) for support to the research group.
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Received: Apr 25, 2021
Accepted: Jul 19, 2021
Published online: Dec 24, 2021
Published in print: Mar 1, 2022
Discussion open until: May 24, 2022
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