Methodology for mix design of the mortar phase of self-compacting concrete using different mineral additions in binary blends of powders

Fresh-state Properties of Self-compacting Mortar and Concrete with Combined Use of Limestone Filler and Fly Ash

“…This behaviour is mentioned by a number of authors for conventional concrete who note that the optimal content of FA substitution for C is lower than 20-30% 34,35 . The values presented in Figure 9 demonstrate that the correlations obtained in our work follow the same trend as those obtained by Nepomuceno [5][6][7] and that the differences found are perfectly acceptable. The binary mixes with FA exhibit values of f cm,c,28d closer to those predicted by Nepomuceno 5 with any differences being below 10%.…”

“…The V w /V p values determined in this work are of a very similar order of magnitude to those reported by Nepomuceno [5][6][7] . Note the value of 0.86 for the V w /V p ratio given by the author for a mix equivalent to SCM1 (with cement only) compared with our value of 0.84.…”

“…That is to say there is a need for a calculation methodology for the SCC mix quantities with the objective of obtaining a given/specific average compressive strength associated with a self-compacting mix using a minimal number of experimental iterations. Of the different suggestions for designing the SCC mix proportions, the one proposed by Nepomuceno in his PhD work 5 and presented in several publications [4][5][6][7] is highlighted here. This method is based on the Japanese methods proposed by Okamura et al 8 and by JSCE 9 , but introduces new parameters and new correlations (relative to the reference methods), which are appropriate not only to establish the parameters mentioned in the mortar phase to obtain the self-compactability required in the concrete phase, but also to control the mechanical strength of the SCC.…”

Fresh Properties and Flexural Strength of Self-Compacting Concrete Integrating Coal Bottom Ash

“…Meanwhile, several studies have been found to investigate the performance of SCC incorporating byproduct waste material [5][6][7]. However, the research on bottom ash in the SCC is limited.…”

Un hormigón autocompactante eco-amigable con áridos gruesos reciclados

“…Figure 1 shows the elongated shape of the recycled aggregates particles after the concrete demolition, crushing and sieving process. The sieve analysis and the neness modulus of those six aggregates are shown on Table 1, while the density and water absorption are shown on The two ne aggregates were combined in the volume proportions of 83% of S1 and 17% of S2 to achieve the grading reference curve proposed by Nepomuceno et al (38) for the mortar phase of self-compacting concrete. The resultant grading curve of ne aggregates is shown on Figure 2.…”