rca recycled demolished concrete

1. RECYCLED AGGREGATE
CONCRETE IN RIGID PAVEMENTS
PROJECT BY :
HITESH BHOI
KAILASH KUMAR
GUPTA
MD JUNAID
NOSHIN
PRAVEEN SHARMA
GUIDE:
H.D. ASHWINI

2. CONTENT
• INTRODUCTION
• BACKGROUND
• OBJECTIVES
• ADVANTAGES
• DISADVANTAGES
• LITERATURE REVIEW
• METHODOLOGY
• DESIGN AND ANALYSIS
• TESTING
• CONCLUSION

3. INTRODUCTION
• To achieve sustainable issue in construction area,
researchers and companies focus on using waste
concrete as a new construction material.
• It is called recycled aggregate which can be produced
by concrete crusher.
• The aggregates are categorized by size as coarse and
fine aggregate.
• The characteristic of recycled aggregates could be
different by its parent concrete because the parent
concrete was designed for its purposes such as
permeability, durability and high strength concrete.

4. HISTORICAL
BACKGROUND
• The applications of recycled aggregate in the construction areas are
wide and they had been used long time ago.
• Wilmot and Vorobieff (1997) stated that recycled aggregate have
been used in the road industry for the last 100 years in Australia.
They also stated that the use of recycled aggregate for the
construction and rehabilitation of local government roads has a great
improve in the last five years
• C & D Recycling Industry (n.d.), the fact file stated that from the
time of the Romans, the stones from the previous roads were
reused when rebuilding their vaunted set of roads. It also stated that
since the end of World War II, the recycling industry had been well
established in Europe.
• According to Seecharan (2004), the Detroid News stated that in
1980s, the old concrete crushed into a powder was a popular road
builder at Michigan, USA

5. OBJECTIVES
• To find out the % use feasible for construction
• To reduce the impact of waste materials on
environment
• To carry out different tests on recycled aggregates &
natural aggregates and compare their results
• To find out the ways of cost saving such as
transportation costs, excavation costs, etc.

6. ADVANTAGES
• Cost saving
There are no detrimental effects on concrete & it is expected that the increase in the
cost of cement could be offset by the lower cost of Recycled Concrete Aggregate
(RCA).
• Save environment
 There is no excavation of natural resources & less transportation.
 Less land is required.
 Less emission of carbon due to less crushing.
• Save time
There is no waiting for material availability.
• Job opportunity
Creates employment opportunities and economic activities in recycling industries

7. DISADVANTAGES
• Less quality (e.g. compressive strength reduces by 10-
30%).
• Duration of procurement of materials may affect life cycle
of project.
• Land, special equipments & machineries are required
(more cost).
• Very high water absorption (up to 6%).
• It has higher drying shrinkage & creep.

8. LITERATURE REVIEW
• The applications of recycled aggregate in the
construction area are very wide. There are many testing
based on the recycled aggregate have been carried out
all around the world.
• Hanson and Torben (1986) stated that since 1945, the
research on recycled aggregate had been carried out in
many countries. Some of the literature reviews on
recycled aggregate are shown as below.

9. J-1.Recycled Concrete Aggregate, a Sustainable
Option from Demolition Concrete Waste- A
Percentage Replacement Method
AUTHORS:
Praveen Mathew
Jeevan Jacob
Leni Stephen
Thomas Paul
(2014)
OBJECTIVE:
To find out the percent
replacement that offers a better
structural property in comparison
with the conventional concrete.
Selected Replacements:
0% (NAC),
20% (RAC 20),
30% (RAC 30) and
40% (RAC 40)
CONCLUSION:
1. Recycled aggregate is an ideal
substitute for the natural
aggregate in structural concrete.
2. Maximum Values of strength
were obtained at 40%
replacement.

10. J-2.Performance of Rigid
Pavements containing RCA
AUTHORS:
GREGORY D. CUTTEL
MARK B. SNYDER
JULIE M. VANDENBOSSCHE
MONTY J. WADE
OBJECTIVE:
1. To identify the material and
pavement design factors that
have resulted in both Good
and Unacceptable
performance.
2. Field study focused on the
causes of pavement distresses
associated with the use of
RCA in PCC surface layers.
CONCLUSION:
1. Comparable Pavement
performance between recycled
and conventional PCC pavements
was especially common when
there were similar amounts of
natural aggregates in the PCC
mixtures.
2. Recurrent D-cracking was not
observed on any of the surveryed
projects.
3. Recurrent ASR appeared to
present in small localized areas in
one of the project as soon as 9
years after construction.

11. J-3. RECYCLED CONCRETE AGGREGATE IN
CONCRETE PAVEMENTS: A FIVE YEAR STUDY
ON ITS EFFECT ON PAVEMENT PERFORMANCE
AUTHORS:
Federico Irali
Aleks Kivi
James T. Smith
Susan L. Tighe
Cesare Sangiorgi
(2013)
OBJECTIVE:
The objective of this research
project was to evaluate the
long-term performance of
concrete pavements with
different percentages of RCA
through the construction of
full scale test sections that was
instrumented with various
sensors to analyze and
monitor pavement responses
over time.
CONCLUSION:
1. Four experimental concrete
pavement sections, each
containing a different percentage
of RCA in the concrete mix, were
built at the CPATT test track in
2007 and all remain in very good
condition after being subjected to
traffic loading for more than five
years.
2. It suggest that the increased use
of waste concrete in the form of
RCA is feasible in concrete
pavements, if performance
comparable to virgin materials can
be expected

12. J-3. RECYCLED CONCRETE AGGREGATE IN
CONCRETE PAVEMENTS: A FIVE YEAR STUDY
ON ITS EFFECT ON PAVEMENT PERFORMANCE
AUTHORS:
Federico Irali
Aleks Kivi
James T. Smith
Susan L. Tighe
Cesare Sangiorgi
(2013)
OBJECTIVE:
The objective of this research
project was to evaluate the
long-term performance of
concrete pavements with
different percentages of RCA
through the construction of
full scale test sections that was
instrumented with various
sensors to analyze and
monitor pavement responses
over time.
CONCLUSION:
1. Four experimental concrete
pavement sections, each
containing a different percentage
of RCA in the concrete mix, were
built at the CPATT test track in
2007 and all remain in very good
condition after being subjected to
traffic loading for more than five
years.
2. It suggest that the increased use
of waste concrete in the form of
RCA is feasible in concrete
pavements, if performance
comparable to virgin materials can
be expected

13. J-4.USE OF RECYCLED
AGGREGATE CONCRETE
AUTHORS:
Mr. Tushar R
Sonawane
Dr. Sunil S. Pimplikar
OBJECTIVE:
1. To find out the % use
feasible for construction.
2. To reduce the impact of
waste materials on
environment.
3. To carry out different tests
on recycled aggregates &
natural aggregates & compare
their results.
4. To find out the ways of cost
saving such as transportation,
excavation etc.
CONCLUSION:
1.Use of recycled aggregate up to
30% does not affect the functional
requirements of the structure as
per the findings of the test results.
2. Various tests conducted on
recycled aggregates and results
compared with natural aggregates
are satisfactory as per IS 2386.
3. Due to use of recycled aggregate
in construction, energy & cost of
transportation of natural resources
& excavation is significantly saved.

14. METHODOLOGY
TESTING
Conducting various tests are conducted in laboratory as per IS code & their results are
compared with natural aggregate
CRUSHING
Collected material is crushed by hammer to separate the aggregates and reduce their sizes in
smaller fraction.
COLLECTION
Collection of Plain Cement Concrete (PCC) from site (Kumar Swamy Layout)

15. Concrete
It is crushed, the
reinforcement bar is
removed, and the
material is screened
for size. Market
outlets for recycled
concrete include
road base, general
fill, pavement
aggregate, and
drainage media.

16. DESIGN & ANALYSIS
MIX PROPORTIONING
The mix proportioning was done as per the Indian
standards (IS 10262:2009). The cement used is of
single origin Portland Pozzolana type with specific
gravity 2.6.
• AGGREGATE:
Recycled aggregates comprises of crushed, graded
inorganic particles processed from construction and
demolition concrete debris.
These materials were obtained from a pavement.

17. TESTING
• SHAPE TEST : as per IS:2386(part I)-1963
− Elongation Index test
− Flakiness Index test
− Combined Index test
− Angularity number test
• AGGREGATE CRUSHING VALUE as per IS 2386(part IV)
1963
• AGGREGATE IMPACT VALUE as per IS 2386(part IV)1963
• LOS ANGELES ABRASION as per IS 2386(part IV)1963
• WATER ABSORPTION TEST as per IS 2386(part IV)1963
• COMPRESSIVE STRENGTH TEST as per IS Code
• SPLIT TENSILE TEST as per IS Code
• FLEXURAL STRENGTH TEST as per IS Code

18. CONCLUSION &
EXPECTED RESULTS
• Various tests conducted on recycled aggregates and
results compared with natural aggregates are
satisfactory as per IS 2386
• Due to use of recycled aggregate in construction,
energy & cost of transportation of natural resources &
excavation is significantly saved.
• Hence directly reduces the impact of waste material on
environment.
• ER: Achieving the maximum strength at 40%
replacement.

19. THE CHOICE IS YOURS
TO LANDFILL TO RECYCLE