Experimental Study on Strength and Durability of Lightweight Aggregate Concrete (M40 Grade) Containing Fly-Ash and Vermiculite

This project is aimed to know about the Experimental Study on Strength and Durability of Lightweight Aggregate Concrete (M-40 Grade) Containing Fly-Ash and Vermiculite. To study the strength characteristics, 5 Mixes were prepared. In the mixes materials used were 20% of fly-ash partial replacement of cement and Partial replacement of Fine aggregate with varying proportions of Vermiculite i.e. 0%,5%,10%, and 15%. Slump cone test and compaction factor test were conducted on fresh concrete to check its workability and consistency. Weight of concrete mixes were determined. To determine various strength characteristics i.e., Compressive strength, split tensile strength test and flexural strength, tests were conducted on the cast concrete specimens. To determine compressive strength, tests were conducted on cubes of size 10cm *10cm *10cm for 7 days, 14 days and 28 days. To determine split tensile strength, test was performed on cylinders of size 15cm diameter and 30cm height at 28 days. To determine flexural strength, test was conducted on beams of size 10cm*10cm *50cm at 28 days. Two distinct acids, HCl (Hydrochloric Acid) and H₂SO₄ (Sulphuric Acid), were used to test the concrete sample's durability, 3 cubes of each mix were cured in acids for 7 days maintaining pH 3 respective weight and compressive strength were determined.