EXPERIMENTAL INVESTIGATION ON DURABILITY OF FLY ASH BASED CONCRETE
Keywords:
Compressive strength, Concrete, fly ashAbstract
Concrete's durability and strength to sustain imposed loads makes it one of the most widely accepted
building materials. The present trend in concrete technology is to increase both it strength and durability to meet the
demands of the modern construction. The durability can be improved by adding mineral or chemical admixtures or by
blending such material with cement. This paper reports and experimental investigation under taken to study the
durability characteristics of ordinary Portland cement (OPC) and Portland pozzolana cement (PPC) concrete with and
without fly ash. The concrete mix was designed as per IS 10260 : 28 days. Specimens were cast totest strength resistivity,
chloride permeability, diffusion and accelerated corrosion.The rapid chloride permeability test (RPCT) value of PPC
concrete was found to be 24% less than that of OPC concrete. Similarly the resistivity respectively. By replacing 10% of
the cement fly ash in OPC concrete the durability properties was comparable to that of PPC concrete. Inc reased
replacement levels of 10%, 20% , 30% , 40% and 50% further improved the durability properties.
