STUDIES ON IMPROVING PHYSICAL AND CHEMICAL PROPERTIES OF PORTLAND CEMENT USING ACTIVATED MICRO SILICA
Due to the high demand for cement, the production of high-quality cement is considered important. In our studies, the use of
activated microsilica and a new polycarboxylate superplasticizer to reduce cement consumption and increase its strength gave
effective results. The compressive strength of samples of ordinary cement and cement with the addition of activated microsilica
was studied. The solidification times of the obtained samples were also studied and compared by X-ray diffractometry. In the
results obtained, it was found that the compressive strength of a sample of a cement composite with 10% activated microsilica is
higher than that of a sample of traditional cement.
1. Muqimov A.S., Turayev X.X., Karimov M.U., Tojiyev P.J. Mikrokremnezyom va seolit mineral qoʻshimchalar qoʻshilgan
sementning mexanik xususiyatlarini oʻrganish Kompozitsion materiallar Ilmiy-texnikaviy va amaliy jurnali №4/2022.
2. Khan M.N. Singla1 , S, Garg R, and Garg R Effect of Microsilica on Strength and Microstructure of the GGBS-based
Cement composites Materials Science and Engineering 961 (2020) 012007 doi:10.1088/1757-899X/961/1/012007.
3. Rafat Siddique Utilization of silica fume in concrete: Review of hardened properties Resources, Conservation and
Recycling Volume 55, Issue 11, September 2011, Pages 923-932 https://doi.org/10.1016/j.resconrec.2011.06.012.
4. Thorstensen R.T., Fidjestol P. Inconsistencies in the pozzolanic strength activity index (SAI) for silica fume according to
EN and ASTM. Mater Struct 48, 3979–3990 (2015). https://doi.org/10.1617/s11527-014-0457-6.
5. ASTM C125 (2007) Standard terminology relating to concrete and concrete aggregates. ASTM International, West
Conshohocken.
6. Tkach E., Soloviev V., Temirkanov R., Denis B. Solovev The Study of Cement Concrete with Improved Properties
Based on the Use of Astivated Silica Fume https://doi.org/10.4028/www.scientific.net/MSF.992.228.
7. AYDIN, A.C., ÖZ, A., POLAT, R.et al.Effects of the different atmospheric steam curing processes on the properties of
self-compacting-concrete containing microsilica. Sadhan ¯ a¯ Vol. 40, Part 4, June 2015, pp. 1361–1371.c Indian Academy
of Sciences https://doi.org/10.1007/s12046-015-0338-x.
8. G. Prokopski a , B. Langier b Effect of water/cement ratio and silica fume addition on the fracture toughness and morphology
of fractured surfaces of gravel concretes. Cement and Concrete Research 30 (2000) 1427 -1433
https://doi.org/10.1016/S0008-8846(00)00332-X.
9. Sinan Caliskan. Aggregate/mortar interface: influence of silica fume at the micro- and macro-level Cement & Concrete
Composites 25 (2003) 557–564 https://doi.org/10.1016/S0958-9465(02)00095-1.
10. Dale P.Bentz, Paul E.Stutzman, Edward J.Garboczi Experimental and simulation studies of the interfacial zone in concrete
Cement and Concrete Research Volume 22, Issue 5,September 1992, Pages 891-902 https://doi.org/10.1016/0008-
8846(92)90113-A.
11. Xu, C.W.; Ni, W.; Li, K.Q.; Zhang, S.Q.; Li, Y.; Xu, D. Hydration Mechanism and Orthogonal Optimisation of Mix
Proportion for Steel Slag–Slag-Based Clinker-Free Prefabricated Concrete. Constr. Build. Mater. 2019, 228, 117036.
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