REACTIVE POWDER CONCRETE.ppt

REACTIVE POWDER CONCRETE A DEVELOPING ULTRA HIGH STRENGTH CONCRETE Under The Guidance of:

Prof. K.JAYARAM Prof. & Head Department of Civil Engineering

By Divakar.Y I Sem M.Tech (Structural Engg) Dept of Civil Engg BIT,Bangalore

INTRODUCTION

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Concrete of today is a versatile material. But there is a quest amongst concrete engineers for a still higher strength, higher performance and higher durability concrete.

DEFINITIONS… Up to 1975

Ordinary concrete High strength concrete

-M15 to M25 -M30 to M45

Up to 1990

Ordinary concrete High strength concrete

-M15 to M45 -M50 to M75

Ordinary concrete High strength concrete

-M20 to M60 -M70 to M120

Ordinary concrete High strength concrete

-M20 to M60 -M70 to M120

Ultra High strength concrete in field in Laboratory

-M120 to M250 -M120 to M810

Since 2000 Today 2006

INTRODUCTION REACTIVE POWDER CONCRETE A DEVELOPING ULTRA HIGH STRENGTH CONCRETE

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RPC with trade name „DUCTAL‟ was developed in France in the early 1990s The concept of RPC was first developed by Mr.Richard and Mr.Cheyrezy at Bouygues, laboratory in France The world‟s first RPC structure, the Sherbrooke Bridge in Canada, was constructed in July 1997

COMPOSITION OF RPC 

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Cement 1 -100micron Sand 150-600 micron Quartz powder 5-25micron Silica fume 0.1-1micron Steel fibres (optimal) L-3 to25mm; D-0.15 to 0.2mm

Superplasticizer Steel aggregates