WELCOME

K. J. SOMAIYA POLYTECNIC

THIRD YEAR CIVIL ENGINEERING DEPARTMENT

GROUP MEMBERS:-

1. ONKAR KAMBLE FCEG12125

2. SHUBHAM HARNE FCEW12121

TOPIC

SPECIAL TYPE OF CONCRETE

SELF COMPACTING CONCRETE

CONTENTS

INTRODUCTION

MATERIALS USED

PROPORTION

PROPERTIES OF SCC

TESTS ON SCC

BENEFITS & DISADVANTAGES

CONCLUSION

SPECIAL CONCRETE

If one or more of the following are outside a

‘Normal Range’ :

MATERIALS

ENVIROMENTAL CONDITIONS

PROPERTIES

METHODS OF PLACING

CONDITIONS OF PLACING

INTRODUCTION

WHAT IS SCC ?

DEFINITION

REQUIRMENTS

HAVE A FLUIDITY THAT ALLOWS SELF –

COMPACTION WITHOUT EXTERNAL ENERGY

REMAIN HOMOGENEOUS IN A FORM DURING AND

AFTER THE PLACING PROCESS AND

FLOW EASILY THROUGH REINFORCEMENT

HISTORY

MATERIALS USED

CEMENT

SAND

COARSE AGGREGATES

POTABLE WATER

ADMIXTURES

MINERAL ADMIXTURES:

i) FLY ASH

ii) GGBS

iii) SILICA FUME

iv) STONE POWDER

v) FIBRS

CHEMICAL ADMIXTURES:

i) SUPER PLASTICIZER

ii) VISCOSITY MODIFYING AGENTS (VMA)

iii) AIR TRAINING AGENTS (AEA)

PRPORTION

WATER : 15% OF VOLUME

POWER : 15% OF VOLUME

FINE AGGREGATE : 20% OF VOLUME

COARSE AGGREGATE : 50% OF VOLUME

FLOW CHART FOR ACHIEVING SELF COMPACTIBILITY

Reduction of

water to

binder ratio

Limitation of

coarse

aggregate

content &

maximum size

Addition of

mineral

admixture

Usage of

Super

plasticizer &

VMA

High segregation

resistance of mortar

& concrete

High Deformability of

mortar & concrete

Self compactibility

PROPERTIES

PROPERTIES OF FRESH SCC

WORKABILITY

SEGREGATION RESISTANCE

OPEN TIME

PROPERTIES OF HARDENED SCC

DURABILITY

COMPRESSIVE STRENGTH

TENSILE STRENGTH

BOND STRENGTH

NO SHRINKAGE AND CREEP

TESTS

TEST TO BE CARRIED OUT PROPERTY TO BE

DETERMINED

1. SLUMP TEST FILLING ABILITY

2. V-FUNNEL FILLING ABILITY

3. ORIMET FILLING ABILITY

4. J-RING PASSING ABILITY

5. L-BOX TEST PASSING ABILITY

6. U-BOX TEST PASSING ABILITY

7. FILL BOX TEST PASSING ABILITY

TEST ON SCC

SLUMP FLOW TEST

V-FUNNELTEST

J- RINGTEST

ORIMETTEST

L - BOX TEST

U - BOXTEST

BENEFITS

BENEFITS OF SCC

FASTER CONSTRUCTION TIMES

LOWER OVERALL COSTS

BETTER SURFACE FINISHES

EASIER PLACING

THINNER CONCRETE SECTIONS

GREATER FREEDOM IN DESIGN

IMPROVED DURABILITY, AND RELIABILITY OF

CONCRETE STRUCTURES

FACTORS IMFLUENCING SCC

MORTAR

COARSE AGGREGATE:

SHAPE & GRADING

W/C RATIO

AMOUNT SUPER PLASTICIZER DOSAGE

DISADVANTAGES OF SCC

More precise measurement and monitoring of the

constituent materials.

Costlier than the conventional concrete based on

concrete material cost.

The cost of SCC is 10-15 % higher than the

conventional concret.

There is no specific INDIAN STANDARD CODAL

PROVISION for mix design.

USE IN INDIA

High rise tower 80 storey –Palais Royale,

Sri Ram Mills compound, Mumbai.

Nathani Heights 75 storey, Bombay central

Tarapur Automic Project, Maharashtra.

Metro Project, Delhi.

Nuclear power plant Kaiga, Karnataka.

VIDEO

CONCLUSION

CONCLUSION

SCC can be effectively placed in most congested areas

USEFUL where normal methods of vibration are not

possible.

When self-compacting concrete becomes so widely

used that it will be seen as the “standard concrete”

rather than as a “special concrete”.

THANK YOU…!