Abstract

The construction industry continually seeks sustainable practices to mitigate environmental impacts, on reducing the reliance on ordinary Portland cement (OPC). This study investigates the potential of metakaolin (MK) and fly ash (FA) as partial replacements for OPC in concrete formulations, aiming to enhance performance and sustainability. MK and FA were incorporated on a gravimetric basis at levels of 11%, 12%, 13%, 14%, and 15% for MK, and 21%, 22%, 23%, 24%, and 25% for FA. The fresh concrete mixes workability is evaluated using the slump cone test, ensuring practical applicability in real-world construction scenarios. To assess the mechanical properties of the cured concrete, a series of tests were conducted, including compressive strength (CS), split tensile strength (STS), flexural strength (FS), and modulus of elasticity (MoE). The results demonstrated that concrete with MK substitution exhibited enhanced mechanical properties, with significant improvements in CS (14.06%), STS (17.64%), and FS (14.82%) compared to the control mix. Although FA replacements also enhanced strength properties, the improvements were slightly lower, with increases of 8.72% in CS, 13.54% in STS, and 9.77% in FS. These findings suggest that MK is a more effective replacement material for achieving higher strength characteristics in concrete. The study provides valuable insights for researchers and engineers in optimizing concrete formulations, thereby enhancing sustainability and performance in construction projects.

Keywords

Sustainable concrete, Metakaolin, Fly ash, Mechanical properties, Ordinary Portland cement.

References

[1] Alvi IH, Li Q, Hu H, Onyekwena CC, Hou Y, Hakuzweyezu T, et al. A critical review of the advancements in acid-activated metakaolin geopolymers. Construction and Building Materials. 2024; 421:135609.

[2] Bheel N, Chohan IM, Ghoto AA, Abbasi SA, Tag-eldin EM, Almujibah HR, et al. Synergistic effect of recycling waste coconut shell ash, metakaolin, and calcined clay as supplementary cementitious material on hardened properties and embodied carbon of high strength concrete. Case Studies in Construction Materials. 2024; 20:1-16.

[3] Samal AK, Panigrahi M, Ganguly RI, Dash RR. Historical development of construction materials–from stone age to modern age. Development of Geopolymer from Pond Ash‐Thermal Power Plant Waste: Novel Constructional Materials for Civil Engineers. 2023: 1-70.

[4] Ziolkowski P. Computational complexity and its influence on predictive capabilities of machine learning models for concrete mix design. Materials. 2023; 16(17):1-36.

[5] Wu Y, Pieralisi R, Sandoval FG, López-carreño RD, Pujadas P. Optimizing pervious concrete with machine learning: predicting permeability and compressive strength using artificial neural networks. Construction and Building Materials. 2024; 443:1-17.

[6] Mandal S, Shiuly A, Sau D, Mondal AK, Sarkar K. Study on the use of different machine learning techniques for prediction of concrete properties from their mixture proportions with their deterministic and robust optimisation. AI in Civil Engineering. 2024; 3(1):1-24.

[7] Choi JH, Kim D, Ko MS, Lee DE, Wi K, Lee HS. Compressive strength prediction of ternary-blended concrete using deep neural network with tuned hyperparameters. Journal of Building Engineering. 2023; 75:1-24.

[8] Maruthai SM, Ayyadurai A, Muthu D, Palanisami S. Optimizing concrete performance through metakaolin and flyash incorporation: a critical appraisal of regression modeling and design code applicability. Matéria (Rio de Janeiro). 2024; 29:1-22.

[9] Ayyadurai A, Maruthai SM, Muthu D. Effect of fly ash and banana fiber on mechanical properties of concrete pavers. Građevinar. 2024; 76(3):211-22.

[10] Li Q, Ren Z, Su X, Feng Y, Xu T, Zheng Z, et al. Improving sulfate and chloride resistance in eco-friendly marine concrete: alkali-activated slag system with mineral admixtures. Construction and Building Materials. 2024; 411:134333.

[11] Saludung A, Azeyanagi T, Ogawa Y, Kawai K. Mechanical and microstructural evolutions of fly ash/slag-based geopolymer at high temperatures: effect of curing conditions. Ceramics International. 2023; 49(2):2091-101.

[12] Boukhari ME, Merroun O, Maalouf C, Bogard F, Kissi B. Exploring the impact of partial sand replacement with olive waste on mechanical and thermal properties of sustainable concrete. Cleaner Materials. 2023; 9:1-14.

[13] Zhang Y, Liu X, Xu Z, Yuan W, Xu Y, Yao Z, et al. Early-age cracking of fly ash and GGBFS concrete due to shrinkage, creep, and thermal effects: a review. Materials. 2024; 17(10):1-19.

[14] Neguja D, Senthilrajan A. Sustainable self-consolidating green concrete: neural-network and fuzzy clustering techniques for cement replacement. Matéria (Rio de Janeiro). 2024; 29(3):1-20.

[15] Pandit P, Prashanth S, Katpady DN. Durability of alkali-activated fly ash-slag concrete-state of art. Innovative Infrastructure Solutions. 2024; 9(6):1-21.

[16] Ijaz N, Ye WM, Ur RZ, Ijaz Z, Junaid MF. Global insights into micro-macro mechanisms and environmental implications of limestone calcined clay cement (LC3) for sustainable construction applications. Science of the Total Environment. 2024; 907:1-33.

[17] Dan AK, Bhattacharjee D, Ghosh S, Behera SS, Bindhani BK, Das D, et al. Prospective utilization of coal fly ash for making advanced materials. In Clean Coal Technologies: Beneficiation, Utilization, Transport Phenomena and Prospective 2021 (pp. 511-31). Cham: Springer International Publishing.

[18] Terán-cuadrado G, Tahir F, Nurdiawati A, Almarshoud MA, Al-ghamdi SG. Current and potential materials for the low-carbon cement production: life cycle assessment perspective. Journal of Building Engineering. 2024; 96:110528.

[19] Khankhaje E, Kim T, Jang H, Kim CS, Kim J, Rafieizonooz M. A review of utilization of industrial waste materials as cement replacement in pervious concrete: an alternative approach to sustainable pervious concrete production. Heliyon. 2024:1-23.

[20] Sobuz MH, Meraz MM, Safayet MA, Mim NJ, Mehedi MT, Farsangi EN, et al. Performance evaluation of high-performance self-compacting concrete with waste glass aggregate and metakaolin. Journal of Building Engineering. 2023; 67:105976.

[21] Magudeaswaran P, Kumar V, Krishna KV, Nagasaibaba A, Ravinder R. Investigational studies on the impact of supplementary cementitious materials (SCM) for identifying the strength and durability characteristics in self curing concrete. Materials Today: Proceedings. 2023.

[22] Zhong Q, Tian X, Xie G, Luo X, Peng H. Investigation of setting time and microstructural and mechanical properties of MK/GGBFS-blended geopolymer pastes. Materials. 2022; 15(23):1-19.

[23] Li G, Zhou C, Ahmad W, Usanova KI, Karelina M, Mohamed AM, et al. Fly ash application as supplementary cementitious material: a review. Materials. 2022; 15(7):1-23.

[24] Gopalakrishna B, Pasla D. Durability performance of recycled aggregate geopolymer concrete incorporating fly ash and ground granulated blast furnace slag. Journal of Materials in Civil Engineering. 2024; 36(4):04024037.

[25] Boukhelkhal D, Guendouz M, Bourdot A, Cheriet H, Messaoudi K. Elaboration of bio-based building materials made from recycled olive core. MRS Energy & Sustainability. 2021; 8:98-109.

[26] Alghamdi H. A review of cementitious alternatives within the development of environmental sustainability associated with cement replacement. Environmental Science and Pollution Research. 2022; 29(28):42433-51.

[27] Garg R, Garg R, Eddy NO, Khan MA, Khan AH, Alomayri T, et al. Mechanical strength and durability analysis of mortars prepared with fly ash and nano-metakaolin. Case Studies in Construction Materials. 2023; 18:1-15.

[28] Yang H, Zhu J, Tao Y, Wang Z, Zheng Q. Effect of the dry-wet cycle on the performance of marine waste silt solidified by calcium carbide residue and plant ash. Journal of Marine Science and Engineering. 2022; 10(10):1-28.

[29] Akbulut ZF, Yavuz D, Tawfik TA, Smarzewski P, Guler S. Enhancing concrete performance through sustainable utilization of class-C and class-F fly ash: a comprehensive review. Sustainability. 2024; 16(12):1-20.

[30] Liu M, Dai W, Jin W, Li M, Yang X, Han Y, et al. Mix proportion design and carbon emission assessment of high strength geopolymer concrete based on ternary solid waste. Scientific Reports. 2024; 14(1):1-14.

[31] Mi R, Pan G, Liew KM, Kuang T. Utilizing recycled aggregate concrete in sustainable construction for a required compressive strength ratio. Journal of Cleaner Production. 2020; 276:124249.

[32] Balasundaram K, Sharma M. Technology for mercury removal from flue gas of coal based thermal power plants: a comprehensive review. Critical Reviews in Environmental Science and Technology. 2019; 49(18):1700-36.

[33] Liu M, Dai W, Zhong C, Yang X. Study on mechanical properties and microstructure of manufactured sand reactive powder concrete with different curing methods. Materials Letters. 2023; 335:133818.

[34] Gong F, Jiang X, Gamil Y, Iftikhar B, Thomas BS. An overview on spalling behavior, mechanism, residual strength and microstructure of fiber reinforced concrete under high temperatures. Frontiers in Materials. 2023; 10:1-26.

[35] Luhar I, Luhar S. A comprehensive review on fly ash-based geopolymer. Journal of Composites Science. 2022; 6(8):1-59.

[36] Han F, Zhang H, Li Z, Pang Z. Effect of the fineness of limestone powder on the properties of calcium sulfoaluminate cement. Journal of Thermal Analysis and Calorimetry. 2023; 148(10):4033-47.

[37] Ndahirwa D, Zmamou H, Lenormand H, Leblanc N. The role of supplementary cementitious materials in hydration, durability and shrinkage of cement-based materials, their environmental and economic benefits: a review. Cleaner Materials. 2022; 5:1-14.

[38] Ayyadurai A, Saravanan MM, Devi M. Effect on stability of asphalt using COVID-19 single use face mask and saline tube waste. International Journal of Advanced Technology and Engineering Exploration. 2023; 10(103):792-807.

[39] Ansari MA, Shariq M, Mahdi F. Multioptimization of FA-based geopolymer concrete mixes: a synergistic approach using gray relational analysis and principal component analysis. Journal of Structural Design and Construction Practice. 2025; 30(1):04024101.

[40] Obayes O, Gad E, Pokharel T, Lee J, Abdouka K. Evaluation of concrete material properties at early age. CivilEng. 2020; 1(3):326-50.

[41] Zhao J, Trindade AC, Liebscher M, De ASF, Mechtcherine V. A review of the role of elevated temperatures on the mechanical properties of fiber-reinforced geopolymer (FRG) composites. Cement and Concrete Composites. 2023; 137:104885.

[42] ACI Committee 3. Building code requirements for structural concrete (ACI 318-08) and commentary. American Concrete Institute. 2008.

[43] Govardhan C, Gayathri V. Experimental investigation on ternary blended recycled aggregate concrete using glass fibers. Buildings. 2023; 13(8):1-23.

[44] GB 50010-2010. Chinese standard code for design of concrete structures. 2015.

[45] https://www.fib-international.org/publications/fib-bulletins/model-code-2010-first-complete-draft,-vol-1-pdf-detail.html. Accessed 20 December 2024.

[46] Standard I. Plain and reinforced concrete-code of practice. New Delhi: Bureau of Indian Standards. 2000.

[47] Indian Standard IS. 516 (1959) Method of tests for strength of concrete. New Delhi. 2002.

[48] Subramaniam DN, Sathiparan N. Comparative study of fly ash and rice husk ash as cement replacement in pervious concrete: mechanical characteristics and sustainability analysis. International Journal of Pavement Engineering. 2023; 24(2):2075867.

[49] Alamri M, Ali T, Ahmed H, Qureshi MZ, Elmagarhe A, Khan MA, et al. Enhancing the engineering characteristics of sustainable recycled aggregate concrete using fly ash, metakaolin and silica fume. Heliyon. 2024; 10(7):1-16.

[50] Khan MI, Abbas YM, Abellan-garcia J, Castro-cabeza A. Eco-efficient ultra-high-performance concrete formulation utilizing electric arc furnace slag and recycled glass powder–advanced analytics and lifecycle perspectives. Journal of Materials Research and Technology. 2024; 32:362-77.

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