Performance evaluation of concretes having different supplementary cementitious material dosages belonging to different strength ranges

• Published in: Construction & building materials 2018-10, Vol.187, p.984-995
• Main Authors: Dhanya, B.S., Santhanam, Manu, Gettu, Ravindra, Pillai, Radhakrishna G.
• Format: Article
• Language: English
• Subjects: Analysis; Cements (Building materials); Concretes; Durability; Electric properties; Mechanical properties; Oxygen permeability index test; Performance classification; Permeability; Rapid chloride permeability test; Supplementary cementitious materials (SCMs); Water sorptivity test; Wenner 4-probe resistivity test
• ISSN: 0950-0618; 1879-0526
• DOI: 10.1016/j.conbuildmat.2018.07.185

•Incorporation of SCMs affect strength and durability properties of concrete.•Performance indicators, combining both strength and durability criteria, are developed.•Limiting values of Performance Indicators are also suggested.•Many options are available to get different levels of durability within a strength range.•Within the same strength range, SCM mixes are more durable compared to pure OPC mixes.•Database generated in this study can act as a guideline for material selection. Production of durable concrete at lower strength levels is always a challenge for concrete technologists. One way to achieve this objective is by the use of Supplementary Cementitious Materials (SCMs). An attempt has been made in this paper to develop indicators called performance indicators, which combine both strength and durability criteria. Limiting values of these indicators are also suggested. Different mixes in the same strength range are classified into different performance classes based on these performance indicators. The durability parameters evaluated here include surface resistivity, charge passed, sorptivity index and oxygen permeability index. The database generated can act as a guideline for material selection and it demonstrates the potential of SCMs to improve durability.