Reactive Powder Concrete project

“TO STUDY THE PERFORMANCE OF REACTIVE POWDER

CONCRETE USING LOCALLY AVAILABLE WASTE MATERIAL”

Subject : Project-1Subject code : 170001

Prepared by :Piyush Mungara (120570106009)Jagniyant Lunagariya(120570106015)Harpal Jadav (120570106039) Rumit Chhelana (120570106070)

Guided by :Dipesh RathodAssistant professor Civil engineering departmentMEFGI

CONTENT

• Introduction• Need of study• Literature review• Objective of study• Scope of study• Work plan• References

IntroductionReactive powder concrete (RPC) is the generic name for a class of cementious composite materials developed by the technical division of Bouygues, in the early 1990s. It is characterized by extremely good physical properties, particularly strength and ductility

A composite material & ultra high strength with mechanical properties.Mixture of cement, silica fume, quartz powder, steel fiber(Optional) & super plasticized with a very low water cement ratio.

This compactness gives RPC ultra-high strength and durability. Reactive Powder Concretes have compressive strengths ranging from 200 MPa to 800 MPa.

•Chard and Cheyrezy indicate the following principles for developing RPC:

• Elimination of coarse aggregates for enhancement of homogeneity

•Utilization of the pozzolanic properties of silica fume

•The optimal usage of super plasticizer to reduce w/c and improve workability

•Post-set heat-treatment for the enhancement of the microstructure

•Addition of small-sized steel fibers to improve ductility

Composition of RPC

• Components :- Function parameters 1) sand :- To increase bulk volume 2) cement :- Binding material 3) Quartz powder :- Maximum reactivity during heat-

treating4) Silica fume :- Filling the voids 5) Steel fiber :- Improve ductility 6) Superplasticizer :- Reduce water binding

Application of RPC

Qinghai-Tibet Railway

Light Rail Transit Station in Iowa (2004) First UHPC Bridge in U.S.

Sherbrooke pedestrian bridge, in Canada

Need of study

• To study the civil engineering applications of industrial byproduct like

foundry sand, which is technically sound and is environmentally safe.

• To study the use of Foundry sand as a partial replacement of Fine

Aggregate to achieve different property of concrete.

• To study the use of Fly ash as a replacement of Quartz powder and

partial replacement of Cement.

LITERATURE REVIEWTITLE JOURNAL AND AUTHOR CONCLUSION

Effect of silica fume on steel fiber bond characteristics in reactive powder concrete

Cement and concrete research(34)2004

Yin-Wen Chan, Shu-Hsien Chu

The incorporation of silica fume in RPC matrix remarkably enhances the steel fiber–matrix bondcharacteristics due to the interfacial-toughening effect upon fiber slip.

COMPRESSIVE STRENGTH OF CEMENTITIOUS CONCRETECONTAINING USED FOUNDRY SAND

National Conference on Recent Advances in Civil and Structural Engineering (RACSE-'14) April-2014Smit M. Kacha1, Ankur C. Bhogayata2, Abhay V. Nakum

replacement of natural sand by UFS provided an excellent improvement in basic strength property of concrete up to the replacement of 40%, the compressive strength was increased by 15%

An Investigation on Reactive Powder Concrete containing Steel Fibers and Fly- Ash

International Journal of Emerging Technology and Advanced Engineering ( Volume 2, Issue 9, September 2012)

M K Maroliya

The flexural strength of the RPC obtained by using circular steel fibers has increased by 50% compared to plain RPC when hot water curing is adopted and 18% higher than plain RPC when normal curing is adopted.

LITERATURE REVIEWTITLE JOURNAL AND AUTHER CONCLUSION

FACTORS AFFECTING THE STRENGTH OF REACTIVE POWDERCONCRETE (RPC)

International Journal of Civil Engineering and Technology (IJCIET),Volume 3, Issue 2, July- December (2012)

Khadiranaikar R.B. and Muranal S. M.

1. The maximum compressive strength of RPC obtained in the present study is 146 MPa atw/b ratio of 0.2 with accelerated curing.2. In the production of RPC the optimum percentage addition of silica fume is found to be15% (by weight of cement) with available superplasticizer.3. The addition of quartz powder increases the compressive strength of RPC up to 20%4. The high temperature curing is essential for RPC to achieve higher strength. It increasesthe compressive strength up to 10% when compared with normal curing.


Microstructural behaviour ofreactive powder concrete underdifferent heating condition.

Magazine of Concrete ResearchVolume 64 Issue 3(2012)

Chi-ming TamVivian Wing-yan Tam

•the duration of the heat treatmentinfluences the form of the structure and quality of crystal formation.•Increased heat-treatment temperature leads to the development of longer C–S–H chain.• when the heat-treatment temperatureincreases, the compressive strength increases owing toC–S–H crystal formation, thereby improving themicrostructure behaviour.


Studies on Relationship Between Water/Binder Ratio And Compressive Strength Of High Volume Fly Ash Concrete

American Journal of Engineering Research (AJER) Issue-2(2013)

Dr Sravana1 Sarika.P ,Dr.Srinivasa Rao ,Dr.Seshadri Sekhar T , Apparao.G

The fly ash used in these investigations exhibits good Pozzolanic properties and can be used in the production of high strength high volume fly ash concrete. High volumes of fly ash up to 50% can be used as additional material without sacrificing strength at lower w/b ratios.

Objective of Study

• The main objectives of this experimental work is to study the effect of

industrial byproduct like foundry sand and fly ash in the Reactive

Powder Concrete on its various properties.

• To understand the waste utilization scenario of the foundry type

industrial byproduct in India.

• To ascertain the behavior of RPC mixed with foundry sand and fly ash,

thereby, examining the changes of properties like strength and ductility.

Scope of Study • Foundry sand is used for the preparation of RPC.

• Steel fiber is introduced to improve ductility.

• Super plasticizers of different qualities are used to study their effects on the workability and compressive strength of Reactive Powder Concrete.

• Silica fumes of different qualities are used to study their effects on the compressive strength of Reactive Powder Concrete.

• Steel fibers of two different dimensions are used to compare the change in compressive strength.

Work planProportion Replacement No. of cube Test

RPC-00 0% fly ash0% UFS

3


3


3


3


3

RPC-21 20% fly ash10%UFS

3


3


3


3

Compression Test


3


3


3


3


3


3


3


3

Compression Test

References• P. Richard, M. Cheyrezy, Composition of reactive powder concrete,Cem. Concr.

Res. 25 (1995) 1501– 1511.• Yin-Wen Chan, Shu-Hsien Chu,Effect of silica fume on steel fiber bond

characteristics in reactive powder concrete, Cement and Concrete Research 34 (2004) 1167–1172• Smit M. Kacha, Ankur C. Bhogayata, Abhay V. Nakum,Compressive strength of

cementitious concrete containing used foundry sand, National Conference on Recent Advances in Civil and Structural Engineering,April-2014.• Khadiranaikar R.B. and Muranal S. M., FACTORS AFFECTING THE

STRENGTH OF REACTIVE POWDER CONCRETE (RPC), International Journal of Civil Engineering and Technology (IJCIET),Volume 3, Issue 2, July- December (2012)

• M K Maroliya, An Investigation on Reactive Powder Concrete containing Steel Fibers and Fly- Ash, International Journal of Emerging Technology and Advanced Engineering(Volume 2, Issue 9, September 2012) • Dr Sravana Sarika.P, Dr.Srinivasa Rao, Dr.Seshadri Sekhar T, Apparao.G,Studies

on Relationship Between Water/Binder Ratio And Compressive Strength Of High Volume Fly Ash Concrete,American Journal of Engineering Research, Volume-02, Issue-08,2013 • Chi-ming Tam, Vivian Wing-yan Tam, Microstructural behaviour of reactive

powder concrete under different heating regimes, Magazine of Concrete Research Volume 64 Issue 3,2012.• N.P. Lee and D.H. Chisholm,Study report-146(2005),Reactive Powder Concrete.• http://www.theconcreteportal.com/reac_pow.html• Concrete technology by M.S.Shetty

http://www.theconcreteportal.com/reac_pow.html

Reactive Powder Concrete project

Engineering

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