Title : EVALUATION OF STRENGTH AND CHLORIDE ION PERMEABILITY OF TRIPLE BLEND SCC
Authors : V R Kowshika1, Bharathi Ganesh2 and H Sharada Bai3
Publication : 23 - 26 October 2013
Volume :
Pages :
Price : 250
Abstract : This paper briefs about an experimental investigation carried out on triple blend Self Compacting Concrete (SCC) mix with a total cementitious content of 500 kg / m3. An appropriate ternary combination of supplementary cementitious materials along with suitable chemical admixtures and VMA was used to produce SCC. The combinations of cementitious contents called Triple Blend, an equal blend of Ordinary Portland Cement – OPC, Pulverized Fuel Ash - PFA, and Ground-Granulated Blast-Furnace Slag - GGBS [1,2] was considered for the investigation. SCC mixes containing cementitious materials of 500 kg/m3, with water binder ratio of 0.4. was used with 40% of fine aggregate as Manufactured Sand to simulate the field scenario where Manufactured Sand (or crushed rock fines – CRF) is a part of SCC on a regular basis. The rheology of mixes, compressive strength and chloride ion diffusion of all the mixes were evaluated as per codal procedure and compared with that of normal SCC mix. Best resistance to chloride ion permeability was observed in triple blend SCC with ‘very low’ resistivity of 445 coulombs showing that its resistance to chloride ion penetration is much more than that of control SCC specimen , which will help to reduce the potential for corrosion of reinforcing steel.