Abstract
Although cement is considered one of the most common materials as a basic component in producing concrete, its manufacturing consumes high energy accompanied by high carbon dioxide emission. Many types of metakaolin and silica-fume are used as a partial cement substitute. Most of the previous researches were conducted on relatively small-scale specimens. In this research, two folds are targeted to investigate the optimum cement replacements then their influential co-effect with external strengthening techniques of RC beams with a total of twenty-two relatively larger specimens. In the first fold, the attempt is made to use such partial cement replacements to reduce embodied carbon emission and hence carbon capture storage costs. For this purpose, thirteen beams with two types of metakaolin MKA, MKB and silica-fume are considered as cement replacements by 8, 12, 15 and 20% by weight. Effects on strength parameters, flexural behavior and ductility are studied and in turn, the optimum cement replacement ratios are determined as such. In the second fold of this investigation, nine specimens with cement replacement by 15% SF and MKA with three different strengthening techniques are considered. External steel plate bonding with end fasteners, near-surface mounted steel rebars and CFRP strips with end U-shaped wrapping are examined. The effects of cement replacement of each case are determined for compressive and tensile strengths. Cracking patterns, failure mechanism, load–deflection besides load–strain relationships and ductility index are investigated for the beam specimens. The research indicated that SF and MK may be used as a cement replacement up to 20% without any adverse effect for environment friendly concrete. The type of MK influences the optimum cement replacement ratio for enhancing the compressive or flexural strength. Size effect is proven to an aspect of consideration for a standardization of the optimum SF or MK replacement for flexure. Unless brittle modes of failure are secured, CFRP strengthening provides the highest ductility with reasonable strength enhancement. Durability characteristics in aggressive environments need further studies that expound their long-term features.
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References
Imbabi M, McKenna S (2012) Trends and Developments in Green Cement and Concrete Technology. International Journal of Sustainabl Built Environment. 1(2):194–216
Patil BB, Kumbhar PD (2012) Strength and durability properties of High Performance Concrete incorporating high reactivity Metakaolin. International Journal of Modern Engineering Research. 2(3):1099–1104
Stephen Issac and Anju Paul (2018) A Literature Review on the Effect of Metakaolin and Fly Ash on Strength Characteristics of Concrete. International Journal of Advance Research and Innovative Ideas in Education. 2(2):55–60
Aiswarya S, Prince Arulraj G, Dilip C (2013) A Review on use of Metakaolin in concrete. Engineeeing science and technology: An International Journal (ESTIJ). 3(3):2250–3498
Sreenivasalu.A and K. Srinivasa Rao, (2012) Design of M100 grade concrete (ACI method). Global Journal of Eng & Applied Science. 5:183–185
Dubey S, Rajiv Chandak RK, Yadav, (2015) Effect of Metakaolin on Compressive Strength of Concrete. International Journal of Engineering Research and Applications (IJERA). 5(6):80–82
Muralinathan P, Joshua Daniel A, Sivakamasundari S (2018) Study of High Strength Concrete Using Metakaolin at Elevated Temperatures. International Journal of Pure and Applied Mathematics 119(14):1267–1273
Saboo N, Shivhare S, Kori KK, Chandrappa AK (2019) Effect of Fly Ash and Metakaolin on Pervious Concrete Properties. Constr Build Mater 223(2019):322–328
ASTM C 39. 2012. Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.
Supit SWM, Pandei RW (2019) Effects Of Metakaolin on Compressive Strength and Permeability Properties of Pervious Cement Concrete. Jurnal Teknologi (Sciences & Engineering) 81(5):33–39
Akhtar A, Aqil T (2017) Effect on Flexural Strength by using Glass Fibre and Metakaolin in Concrete. International Journal for Research in Applied Science & Engineering Technology. 5(5):2321–9653
Jagtap SA, Shirsath MN, Karpe SL (2017) Effect of Metakaolin on the Properties of Concrete. International Research Journal of Engineering and Technology (IRJET). 4(7):2395–2472
Rashwan MM, Megahed AR, Essa MS (2015) “Effect of Local Metakaolin on Properties of Concrete and Its Sulphuric Acid Resistance. Journal of Engineering Sciences, Assiut University, Faculty of Engineering. 43(2):183–199
Sarangi P, Panda KC, Jena S (2017) Effect of Metakaolin on the Enhancement of Concrete Strength. Indian J. Sci. Res. 14(2):121–127
Patil SP, Sangle KK (2013) Flexural Strength Evaluation of Prestressed Concrete Beams with Partial Replacement of Cement by Metakaolin and Flyash. American International Journal of Research in Science, Technology, Engineering & Mathematics. 3(2):187–194
Deepthi Dennison and Jean Molly Simon (2014) Effect of Metakaolin on the Structural Behavior of Normal and Steel Fiber Reinforced Concrete Beams. International Journal of Scientific & Engineering Research. 5(7):2278–1684
Mohamed Amin Sherif, (2017) Utilization of Metakaolin on Sustainable Concrete Properties. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE). 14(4);2320-334X
Jian-Tong Ding and Zongjin Li (2002) Effects of Metakaolin and Silica Fume on Properties of Concrete. ACI Mater J 99(4):15–22
Bashir IA, Rasool MA, Rashid M, Singh P (2017) Experimental Investigation of Compressive Behaviour of Pier by Partial Replacement of Metakaolin. Global Journal of Technology & Optimization. 8(1):22–28
E. M. Lotfy, (2016) Flexural strengthening of R.C. Beams. International Journal of Engineering and Technical Research (IJETR). 6(3).
Mashrei MA, Makki JS, Sultan AA (2019) Flexural strengthening of Reinforced Concrete Beams Using Carbon Fiber Reinforced Polymer (CFRP) sheets with Grooves. Latin American Journal of Solids and Structures 16(4):e176
Tarigan J, Patra FM, Sitorus T (2018) Flexural strength using Steel Plate, Carbon Fiber Reinforced Polymer (CFRP) and Glass Fiber Reinforced Polymer (GFRP) on reinforced concrete beam in building technology. IOP Conference Series: Earth and Environmental Science 126:012025
Mohammad Nurul Mobin and Md. Mozammel Hoque, (2018) Flexural Strengthening of RC Beams with Near Surface Mounted Reinforcing Steel Bars. DUET Journal, Dhaka University of Engineering & Technology. 4(1).
ASTM C33/C33M -13, Standard Specification for Concrete Aggregates, Annual Book of American Society for Testing and Materials ASTM, published 2013.
Sika, Technical Data Sheet, Sikament 163 M, April 2018.
Chaboki HR, Ghalehnovi M, Karimipour A, de Brito J (2018) Experimental study on the flexural behaviour and ductility ratio of steel fibers coarse recycled aggregate concrete beams. Constr Build Mater 186:400–422
Mansour Ghalehnovi, Arash Karimipour and Jorge de Brito, 2019, “Influence of steel fibers on the flexural performance of reinforced concrete beams with lap-spliced bars”, Construction and Building Materials 229–116853.
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The experimental work was carried out using the facilities of the "Reinforced Concrete and Heavy Structures Laboratory," Faculty of Engineering, Tanta University.
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Moubarak, A.M.R., Elwardany, H., el-hassan, K.A. et al. Optimizing metakaolin and silica-fume in rc beams with/without strengthening. Innov. Infrastruct. Solut. 6, 117 (2021). https://doi.org/10.1007/s41062-020-00449-x
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DOI: https://doi.org/10.1007/s41062-020-00449-x