Sérgio Roberto da Silva

TL;DR: In this paper, the authors investigated the mechanical properties (compressive and tensile strength) and durability (water absorption and carbonation depth) of concretes with different RCA substitution levels (25, 50, 75, and 100%) instead of natural coarse aggregate, as well as replacement of Portland cement by fly ash in some levels (10, 15, 25, and 30%) for different water/binder ratios (0.40, 0.45,0.55, and 0.65).

TL;DR: In this paper, the use of recycled aggregates (RA) from construction and demolition waste and fly ash in pervious concrete was analyzed, and the results showed that the incorporation of 10% fly ash with 75% of recycled aggregate content showed an increase of 6% tendency to clogging compared to the reference concrete.

TL;DR: In this paper, the influence of a chemical pretreatment with NaOH on the physical, mechanical, microstructural properties of concretes with two rubber residue contents (15% and 30%) as a natural fine aggregate replacement, and the addition of silica fume (7.5% and 15%) to replace Portland cement.

TL;DR: In this paper, the authors investigated the mechanical properties (bond strength, compressive strength, and flexural strength), durability (water absorption), and microstructural analysis of rendering mortars with different levels of replacement.

TL;DR: A presente trabalho tem como objetivo principal investigar a potencialidade do emprego de lodo de estacao de tratamento de agua (ETA) moido e calcinado em substituicao ao agregado miudo em concretos de cimento Portland as discussed by the authors.