Analyzing the Impact of Supplementary Cementitious Material and Polypropylene Fiber on the Fresh, Mechanical Properties, and Acid Attack of Quaternary Blended Self Compacting Concrete

Self-Compacting Concrete (SCC) is defined as concrete that has an ability to flow under its own weight, to fill the required space or formwork completely and to produce a dense and adequately homogenous material without a need for vibrating compaction. This study aims to develop an inexpensive SCC and reduce waste and carbon emissions from cement manufacturing by adjusting the fly ash and GGBS concentration and substituting 10% silica fume for 50% of cement. Additionally, tests were carried out on (0.2%) polypropylene fiber (PPF) in SCC mixes to see whether it could impact the material's strength and durability. Super plasticizers were added to the regular SCC and QBSCC mixed concrete to improve their workability even more. In this study eight different mixes were prepared, four mixes with polypropylene fiber and four mixes without fibers. The fresh properties tests were conducted such as slump flow, T-50-time, J-ring, L box tests, U box tests, and V funnel tests, were carried out and results were compared. And Mix-2 and Mix- 2PPF with polypropylene fiber showed superior fresh properties. The compressive strength, split tensile strength and flexural strength on the hardened state of scc was carried out. The conclusions are drawn based on the test results. Whereas Mix-4 without fiber and Mix-4PPF with polypropylene fiber demonstrated the best results. To examine the resistance of concrete specimens to aggressive sulfuric acid solutions. The specimens were cured for 7 and 28 days subjected to 15% of sulfuric acid for 28 days, based on the tests result conclusion were drawn. Keywords: Quaternary Blended Self-Compacting Concrete (QBSCC), Silica Fume (SF), Ground granulated blast Furness slag (GGBS), Fly Ash (FA), Polypropylene Fiber (PPF)