Evaluation of coppe slag as aggregate addition on properties of cementitious matrix

Casagrande, Cézar Augusto; Santos, Diego Deyvison dos; Jochem, Lidiane Fernanda; Nóbrega, Ana Cecília de

doi:10.1590/s1517-707620200004.1189

Cited by 1 publication

(2 citation statements)

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“…Greater capillarity is expected slag-slag added concrete due the lower cement consumption, this leads to a more interconnected pores, impacting the cohesion and adhesion forces between water particles and concrete pores. For until 24 hours, all the slag-added concretes presented absorption higher than REF [27]. However, for 48 and 72h the 5 and 10% slag-added series presented lower values of water absorption, suggesting that the copper slag improved the cementitious matrix.…”

Section: Figurementioning

confidence: 84%

“…In general, as the higher was the cement consumption, the lower was the absorption by capillarity and the total water absorption. However, for total water, the reduction of water absorption is more effective for until 7.5%, from this amount of cement replacement, the matrix presented a lower capacity to improve the durability by water penetration [27].…”

Section: Figurementioning

confidence: 92%

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Blasted copper slag as artificial fines in ecofriendly concrete

Oliveira,

Casagrande,

Marinho

et al. 2022

Matéria (Rio J.)

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The present work assessed the feasibility of applying blasted copper slag (BCS) as addition to cementitious composites. Series with 0-15% of BCS were produced and characterized by compression strength, durability, spread and specific gravity. In fresh state, the workability was enhanced in until 250% when adding the slag. Besides, both mechanical strength and durability indicators of BCSR-added concrete were also improved. Although the greater strength at the ages of 7 and 28 days was achieved for the reference concrete, concretes containing 5% and 7.5% of BCSR also reached the expected resistance of 30 MPa at 28 days. Concretes containing 5% and 10% of the slag were the ones that less absorbed water. The reduction in capillary absorption reached 63% in comparison to the ref concrete for 5% BCSmodified concrete. The incorporation of BCS improved the performance of the reference concrete in terms of both mechanical strength and durability. So, the reuse of the BCS produced after abrasive blasting in concretes was viable and sustainable disposal alternative.

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Section: Figurementioning

confidence: 84%

Section: Figurementioning

confidence: 92%