Measuring packing density and water demand of Portland cement and SCMs by the mixing energy method

Autor: Nicolle Talyta Arriagada Soto, Gustavo Macioski, Emanoel Cunha Araújo, Juarez Hoppe Filho, Nayara Soares Klein
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Revista IBRACON de Estruturas e Materiais, Vol 16, Iss 5 (2023)
Druh dokumentu: article
ISSN: 1983-4195
DOI: 10.1590/s1983-41952023000500007
Popis: Abstract Wet packing methods evaluate the packing density of fine materials through the determination of the apparent density and voids content of pastes with different water to solids (w/s) ratios. Its goal is to estimate the minimum water demand to achieve the maximum solids concentration in the mixture, a parameter applied to the mix design of cementitious composites based on particle packing theories. Since most methods based on apparent density are time-consuming and require a high volume of materials, this paper aims to evaluate the mixing energy method as an alternative for the wet packing method and to adapt it to be used for SCMs (supplementary cementitious materials). With a reduced time and material to perform the test, results demonstrate a better precision of the mixing energy due to its discrete measurement. The ideal water flow and initial volume of materials to perform the test on cement and SCMs are discussed.
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