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Mechanical Properties of Tin Slag Mortar

School of Civil Engineering, Universiti Teknologi Malaysia, Johor 81310, Malaysia
Department of Building Technology, Kogi State Polytechnic, Lokoja 270103, Nigeria
Construction Research Centre, Universiti Teknologi Malaysia, Johor 81310, Malaysia
Department of Civil Engineering, Faculty of Engineering, Technology and Built Environment, UCSI University, Kuala Lumpur 56000, Malaysia
Department of Civil Engineering Technology, Adamawa State Polytechnic, Yola 640231, Nigeria
Department of Civil Engineering, University of Abuja, Abuja 900108, Nigeria
Author to whom correspondence should be addressed.
Academic Editors: José Neves and Ana Cristina Freire
Received: 15 January 2021 / Revised: 21 March 2021 / Accepted: 31 March 2021 / Published: 21 June 2021
The increased demand for cement mortar due to rapid infrastructural growth and development has led to an alarming depletion of fine aggregate. This has prompted the need for a more sustainable material as a total/partial replacement for natural fine aggregate. This study proposes the use of tin slag (TS) as a replacement for fine aggregate in concrete to bridge this sustainability gap. TS was used to replace fine aggregate at replacement levels of 0%, 25%, 50%, 75%, and 100% in cement mortar. Fresh and hardened properties of TS mortar were obtained. Flow tests showed that, as the TS quantity and the w/c ratio increased, the mortar flow increased. Similarly, the compressive strength increased as the TS replacement increased up to 50% replacement, after which a decline in strength was observed. However, with the TS replacement of fine aggregate up to 100%, a compressive strength of 6% above control was attained. The morphological features confirm that specimens with TS had a denser microstructure because of its shape characteristics (elongated, irregular, and rough), and, thus, plugged holes better than the control mortar. The natural sand’s contribution to strength was a result of better aggregate hardness as compared to TS. Hence, TS can be used as alternative for fine aggregate in sustainable construction. View Full-Text
Keywords: tin slag; mortar; compressive strength; fine aggregate; rough surfaced; elongated tin slag; mortar; compressive strength; fine aggregate; rough surfaced; elongated
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MDPI and ACS Style

Olukotun, N.; Sam, A.R.M.; Lim, N.H.A.S.; Abdulkareem, M.; Mallum, I.; Adebisi, O. Mechanical Properties of Tin Slag Mortar. Recycling 2021, 6, 42.

AMA Style

Olukotun N, Sam ARM, Lim NHAS, Abdulkareem M, Mallum I, Adebisi O. Mechanical Properties of Tin Slag Mortar. Recycling. 2021; 6(2):42.

Chicago/Turabian Style

Olukotun, Nathaniel, Abdul R.M. Sam, Nor H.A.S. Lim, Muyideen Abdulkareem, Isa Mallum, and Olukotun Adebisi. 2021. "Mechanical Properties of Tin Slag Mortar" Recycling 6, no. 2: 42.

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