EXPERIMENTAL AND ANALYTICAL INVESTIGATION OF HIGH PERFORMANCE BEAM COLUMN JOINT UNDER MONOTONIC LOADING USING FOUNDRY SAND AND FLY ASH

High performance concrete appears to be a better choice for a strong and durable structure. In this thesis, investigations are carried out on strength properties and durability properties such as compressive strength, split tensile strength, flexural strength, saturated water absorption test, acid attack, carbonation and alkalinity measurement of M75 grade of HPC mixes with different % replacement of 10%, 20%, and 30% of foundry sand with fine aggregate and 10%, 20%, and 30% of cement by fly ash by adopting water-binder ratio of 0.3. Conplast SP430 is based on Sulphonated Napthalene Polymers and can be used as a super plasticiser for better workability for high performance concrete. The HPC mix, grade M75 concrete is designed as per ACI 211.4R-93 “Guide for selecting proportions for high strength concrete with Pozzolana Portland cement and other cementitious materials”. Mechanical characteristics like Compressive strength, Split-tensile strength, Flexural strength will be examined. The durability study will be done by conducting the tests such as saturated water absorption test, acid attack, and carbonation and alkalinity measurement. A mathematical model was conducted using ANSYS 14.0 software. The predicted mathematical model for beam column joint will be tested to get accurate results for the respective ages and compared with the experimental results. Based on the results obtained, the replacement of 30% foundry sand and fly ash with 3% of super plasticiserwith superior characteristics will be found.