Impact of Fine Slag Aggregates on the Final Durability of Coal Bottom Ash to Produce Sustainable Concrete

Halan Ganesan, Abhishek Sachdeva, Petros Petrounias, Paraskevi Lampropoulou, Pushpendra Kumar Sharma and Abhinav Kumar ()
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Halan Ganesan: Department of Mechanical Engineering, Sri Ranganathar Institute of Engineering and Technology, Coimbatore 641110, Tamil Nadu, India
Abhishek Sachdeva: Department of Civil Engineering, Lyallpur Khalsa College, Technical Campus, Jalandhar 144001, Punjab, India
Petros Petrounias: Section of Earth Materials, Department of Geology, University of Patras, 26504 Patras, Greece
Paraskevi Lampropoulou: Section of Earth Materials, Department of Geology, University of Patras, 26504 Patras, Greece
Pushpendra Kumar Sharma: School of Civil Engineering, Lovely Professional University, Phagwara 144011, Punjab, India
Abhinav Kumar: Department of Nuclear and Renewable Energy, Ural Federal University Named after the First President of Russia Boris Yeltsin, Ekaterinburg 620002, Russia

Sustainability, 2023, vol. 15, issue 7, 1-31

Abstract: In the current investigation is presented the prospective substitution of cement and fine aggregates with fine slag material (Alccofine 1203) and coal bottom ash, respectively. The investigation was carried out in two steps, viz. Phase I and Phase II. In Phase I, a control mix was designed with basic ingredients of concrete, and then fine aggregates were partially replaced with five percentages (10%, 20%, 30%, 40% and 50%) of coal bottom ash (CBA). To improve the characteristics of coal bottom ash concrete mixtures, ultra-fine slag material, i.e., Alccofine 1203 (an innovative ultra-fine slag material, low calcium silicate, which offers reduced water demand depending upon the concrete performance) was used as a partial replacement of cement. In Phase II, the inspected effect of replacing 5%, 10%, 15% and 20% cement with Alccofine, a concrete mix containing 40% coal bottom ash, on concrete properties such as workability, compressive strength, split tensile strength, flexural strength, pulse velocity, rapid chloride penetration along with a microstructural analysis using SEM was studied. It was concluded from cost analysis that the 15% replacement of cement with ultra-fine material Alccofine in 40% coal bottom ash concrete achieved the properties of high-strength concrete, with an 8.14% increase in cost compared to the control increase. The significance of this work lies in the fact that we achieved a high-strength concrete by using 40% industrial waste, i.e., coal bottom ash, as a partial replacement of fine aggregates in combination with the 15% Alccofine inclusion as a partial replacement of cement. About 58% improvement in compressive strength was recorded for 40% coal bottom ash and 15% Alccofine mix.

Keywords: durability of concrete; fine aggregates; Alccofine; compressive strength; coal bottom ash (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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