DESIGNING OF ALKALINE ACTIVATED CEMENTING MATRIX OF ENGINEERED CEMENTITIOUS COMPOSITES

2021;
: 52-57
https://doi.org/10.23939/jtbp2021.02.052
Received: September 29, 2021
Revised: October 21, 2021
Accepted: November 19, 2021
1
Lviv Polytechnic National University, Department of Building Production
2
Lviv Polytechnic National University, Department of building production
3
Lviv Polytechnic National University, Department of construction production
4
Lviv Polytechnic National University, Department of Building Production

The development of high-performance materials, which are characterized by high compressive and flexural strength, durability and performance properties, is an urgent problem of modern construction. Engineered cementitious composites are one such material. Improving of properties of composites is achieved by partial replacement of cement with supplementary cementitious materials. The ratio of binder and filler components and superplasticizer consumption were selected. The optimal ratio of cement:fly ash:sand is 1:1:1 and the dosage of polycarboxylate superplasticizer is 0.75% by weight of the binder. The reduction of the negative impact of the increased amount of fly ash, which is characterized by low reactivity, is provided by the introduction of metakaolin and alkaline hardening activator. Alkaline activated cement system is characterized by increasing of the early strength in 1.5 times comparison with equivalent mixture without alkaline activator. Strength of alkaline activated cementing matrix after 28 days is 66.1 MPa and specific strength Rc2/Rc28 is 0.61.

Sanytsky, M., Marushchak, U., Olevych, Y., Novytskyi, Y. (2020). Nano-modified ultra-rapid hardening Portland cement compositions for high strength concretes. Lecture Notes in Civil Engineering 47, 392-399. DOI:10.1007/978-3-030-27011-7_50.
https://doi.org/10.1007/978-3-030-27011-7_50
Torres, A., Burkhart, A. (2016). Developing sustainable high strength concrete mixtures using local materials and recycled concrete. Materials Sciences and Applications 7, 128137. DOI:10.4236/msa.2016.72013.
https://doi.org/10.4236/msa.2016.72013
Li, V. C. (2003). On Engineered Cementitious Composites (ECC).A review of the material and its applications. Journal of Advanced Concrete Technology 1/3, 215-230. DOI.10.3151/jact.1.215.
https://doi.org/10.3151/jact.1.215
Marcalikova Z., Cajka R., Bilek V., Bujdos D., Sucharda O. (2020). Determination of mechanical characteristics for fiber-reinforced concrete with straight and hooked fibers. Crystals 10, 545. DOI:10.3390/cryst10060545
https://doi.org/10.3390/cryst10060545
Gholizadeh H., Dilmaghan S. (2018).The study of mechanical properties of high strength concrete containing steel and polypropylene fibers. Civil Engineering Journal 4/1, 221-230. DOI: 10.28991/cej-030981.
https://doi.org/10.28991/cej-030981
Chethan, V. R., Ramegowda, M., Manohara, H. E. (2015). Engineered Cementitious Composites - A review. International Research Journal of Engineering and Technology 2/5, 144-149. DOI.10.28991/cej-03091112.
Yu, K., Jiangtao, Y., Dai J.-G. (2018). Development of ultra-high performance engineered cementitious composites using polyethylene (PE) fibers. Construction and Building Materials 158, 217-227. DOI.10.1016/J.CONBUILDMAT.2017.10.040
https://doi.org/10.1016/j.conbuildmat.2017.10.040
Mangulkar, M., Jamkar, S. (2013). Review of particle packing theories used for concrete mix proportioning. International Journal of Scientific & Engineering Research 4/5, 143-148. https://www.researchgate.net/publication/309900695_Review_of_Particle_Pa...
Zhang J., Gong Ch., Guo Z., Zhang M. (2009). Engineered cementitious composite with characteristic of low drying shrinkage. Cement and Concrete Research 39, 303-312. DOI:10.1016/j.cemconres.2008.11.012.
https://doi.org/10.1016/j.cemconres.2008.11.012
Sanytsky, M., Kropyvnytska, T., Fic, S., Ivashchyshyn, H (2020). Sustainable low-carbon binders and concretes. E3S Web of Conferences 166, 06007. DOI:10.1051/e3sconf/202016606007.
https://doi.org/10.1051/e3sconf/202016606007
Sobol, K., Blikharskyy, Z., Petrovska, N., Terlyha, V. (2014). Analysis of structure formation peculiarities during hydration of oil-well cement with zeolitic tuff and metakaolin additives. Chemistry and Chemical 8/4, 461-465. DOI : https://doi.org/10.23939/chcht08.04.461
https://doi.org/10.23939/chcht08.04.461
 O.S., Plugin, A.A., Chepurna, S.M., Zavalniy, O.V., Dudin, O.A. (2019). The effect of added finely dispersed calcite on the corrosion resistance of cement compositions. IOP Conf. Series: Materials Science and Engineering 708, 012080. DOI:10.1088/1757-899X/708/1/012080.
https://doi.org/10.1088/1757-899X/708/1/012080
Marushchak, U., Sanytsky, M., Sydor, N., Braichenko, S. (2018). Research of nanomodified engineered cementitious composites. Proceedings of the 2018 IEEE 8th International Conference on Nanomaterials: Applications and Properties 8914835. DOI:10.1109/NAP.2018.8914835
https://doi.org/10.1109/NAP.2018.8914835
Krivenko, P., Sanytsky, M., Kropyvnytska, T. (2018). Alkali-sulfate activated blended portland cements. Solid State Phenomena 276, 9-14. DOI:10.4028/www.scientific.net/SSP.276.9
https://doi.org/10.4028/www.scientific.net/SSP.276.9
Tolmachov, S., Belichenko, O., Zakharov, D. (2017). Influence of additives on flexural strength of concrete. MATEC Web of Conferences 116, 01019. DOI:10.1051/matecconf/201711601019.
https://doi.org/10.1051/matecconf/201711601019
Plank, J., Sakai, E., Miao, C.W., Yu, C., Hong, J.X. (2015). Chemical admixtures - Chemistry, applications and their impact on concrete microstructure and durability. Cement and Concrete Research 78/A, 81-99. DOI: https://doi.org/10.1016/j.cemconres.2015.05.016
https://doi.org/10.1016/j.cemconres.2015.05.016
Sydor, N., Marushchak, U., Braichenko, S., Rusyn, B. (2021). Development of Component Composition of Engineered Cementitious Composites. Lecture Notes in Civil Engineering 100, 459-465. DOI: 10.1007/978-3-030-57340-9_56
https://doi.org/10.1007/978-3-030-57340-9_56
Marushchak U., Sanytsky M., Mazurak T., Olevych Y. (2016). Research of nanomodified portland cement compositions with high early age strength. Eastern-European Journal of Enterprise Technologies 6/6, 50-57. DOI: https://doi.org/10.15587/1729-4061.2016.84175
https://doi.org/10.15587/1729-4061.2016.84175