Development and Evaluation of Eco-Friendly SCC Incorporating Marble Sludge Powder as Cement Replacement
Mandadhi Srikanth1, M.Venkata Narasaiah2
1PG Scholar, Dept. of Civil Engineering, Chebrolu Engineering College, Chebrolu, Guntur, A.P, India.
2Assistant Professor, Dept. of Civil Engineering, Chebrolu Engineering College, Chebrolu, Guntur, A.P, India.
Abstract - Self-Compacting Concrete (SCC) has had a remarkable impact on the concrete construction industry, especially the precast concrete industry. The marble powder (MP), obtained from waste sludge marble processing, has a high specific surface area; this could mean that it can be used as filler added to self-compacting concrete (SCC). Marble Sludge Powder (MSP) and Crushed Rock Dust (CRD) can be used as filler and helps to reduce the total voids content in concrete. For all pastes, the morphological forms and the chemical composition of the main mineral components were analyzed by the scanning electron microscope (SEM) and X-ray diffraction (XRD). The hydration, micro structure, and mineralogical changes has been studied. Experimental results show that the cement-MP paste volume has significant effects on the self-compacting and the self- leveling properties in the fresh state of SCC. The study on physical, chemical and mechanical properties such as compressive strength and split tensile strength and the durability tests include water absorption test, water permeability, rapid chloride permeability; electrical resistivity and half-cell potential are carried out in this study. From the results it is confirmed that compressive strength increases with increase in percentage replacement of MSP up to 15% of CRD in place of FA. It is found that split tensile strength is directly proportional to the compressive strength.
Key Words: Self-Compacting Concrete (SCC), Marble Powder (MP), Marble Sludge Powder (MSP), Crushed Rock Dust (CRD), Compressive Strength, Split Tensile Strength, Durability Tests, X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Water Permeability, Electrical Resistivity.
