FRESH AND HARDENED CONCRETE COMBINED WITH LIME STONE FINES AS A SUBSTITUTION FOR CEMENT

Zuhairuddin; Iqra Wahid Lakhiar; Dileep Kumar; Shafique Ahmed

Authors

Zuhairuddin Department of Civil Engineering, The University of Larkano, Larkano, Sindh, Pakistan
Iqra Wahid Lakhiar nstitute of Environmental Engineering & Management, Mehran University of Engineering and Technology, Jamshoro, Sindh, Pakistan.
Dileep Kumar Department of Chemical Engineering, Universiti Teknology Petronas, Seri Iskandar, Malaysia.
Shafique Ahmed Department of Civil Engineering Technology, Benazir Bhutto Shaheed University of Technology and Skill Development (BBSU-TECH), Khairpur Mir's, Pakistan.

Abstract

Cement manufacture emits substantial quantities of carbon dioxide, significantly affecting the climate, while also necessitating considerable energy use. Moreover, the disposal and recycling of conventional concrete constituents may result in environmental deterioration. Utilizing trash in concrete decreases both making cement and utilization of energy. This research aims to assess the characteristics of fresh and hardened concrete by partly substituting cement with limestone fines (LSF). This research included substituting cement with LSF at proportions of 0%, 5%, 10%, 15%, and 20% by weight of cement. The entirety of 30 samples of concrete was prepared using a mix ratio of 1:1.5:3. Cube-sized specimen was evaluated for compressive strength, and density of concrete at 28 days, correspondingly. The optimal result indicated that the compressive strength enhanced by 10.75% when 10% LSF was used as a cement replacement in concrete after 28 days. The slump value and density of concrete decreased with an increase in LSF concentration.

Keywords- Lime Stone Fines, Concrete, slump test, Density, Compressive Strength.