Modifikovani supersulfatni cementi
DOI:
https://doi.org/10.5937/zasmat2104340DKljučne reči:
šljaka visoke peći, sulfatni aktivatori, fosfogips, akceleratori očvršćavanja, superplastifikator, kreč, supersulfatni cement, svojstvaApstrakt
U radu su prikazani rezultati eksperimentalnih istraživanja mogućnosti dobijanja modifikovanih supersulfatnih cementa (SSC) sa poboljšanim fizičko-mehaničkim svojstvima na niskoaluminijskim zrnastim šljakama visoke peći. U uporednim eksperimentalnim ispitivanjima dejstva primesa različitih sulfatnih aktivatora pokazano je da se najveća čvrstoća cementa postiže upotrebom fosfogipsa neutralisanog krečom. Dodatno aktivirajuće dejstvo je utvrđeno za supersulfatne cemente sa uvođenjem dodataka fluorida i posebno fluorida magnezijuma, kalcijuma i natrijum silikofluorida. Dodatno uvođenje akceleratora očvršćavanja i njihovih kompozicija sa superplastifikatorom u SSC sastav omogućava povećanje čvrstoće na pritisak cementa u starosti od 28 dana do 60-65 MPa uz postizanje visoke čvrstoće u ranom uzrastu. Uporedo sa standardnim testovima, vršeni su eksperimenti primenom matematičkog planiranja uz dobijanje adekvatnih regresionih jednačina.Reference
Bijen, J., Niël, E. (1981) Supersulphated cement from blastfurnace slag and chemical gypsum available in the Netherlands and neighbouring countries.Cement and Concrete Research, 11(3), 307-322
https://doi.org/10.1016/0008-8846(81)90104-6
Dvorkin, L., Dvorkin, O., Ribakov, Y. (2012) Mathematical experiments in concrete technology. New York: Nova Science Publishers
Dvorkin, L., Dvorkin, O. (2011) Building mineral binders. Moscow: Infra-Engineering
Erdem, E., Ölmez, H. (1993) The mechanical properties of supersulphated cement containing phosphogypsum.Cement and Concrete Research, 23(1), 115-121
https://doi.org/10.1016/0008-8846(93)90141-U
Gazdić, D. (2013) Slag-sulphate binder.Preparation, Advanced Material Research, 818, 68-71
https://doi.org/10.4028/www.scientific.net/AMR.818.68
Locher, F. (2006) Cement: Principles of production and use. Dusseldorf: Verlag Bau
Mehrotra, V.P., Sai, A.S.R., Kapur, P.C. (1982) Plaster of Paris activated supersulfated slag cement.Cement and Concrete Research, 12 (4), 465-471
https://doi.org/10.1016/0008-8846(82)90061-8
Nquen, H., Chang, T., Shin, J., Chen, C. (2016) Formulating for innovative self-compacting concrete with low energy super sulfated cement used for sustainability development.Journal of Material Science and Chemical Engineering, 4(7), 22-28
https://doi.org/10.4236/msce.2016.47004
Pashenko, A., Serbin, P., Starchevskya, O. (1995) Binders substances. Kiev: High School
Reinsdorf, S. (1962) Properties and utilization of supersulfated slag cement.Bauplan-Bautechn, 16(5), 230-234
Schwiete, H., Ludwig, U., Otto, P. (1971) Investigations on super sulfated slag cements. Opladen: West-dentscher Verl
Stark, S. (1999) Modern concrete materials: Binders, additions and admixtures. London: Thomas Telford Ltd
Svatovskya, L., Sychev, M. (1983) Activated hardening of cements. S-Peterburg
Volzhensky, A., Burov, M., Colokolnicov, V. (1973) Mineral binders (technology and properties). S-Peterburg: Stroyizdat
Wu, Q., Xue, Q., Yu, Z. (2021) Research status of super sulfate cement.Journal of Cleaner Production, 294, 126-128
##submission.downloads##
Objavljeno
Broj časopisa
Rubrika
Licenca
Sva prava zadržana (c) 2021 CC BY 4.0 by Authors
Ovaj rad je pod Creative Commons Autorstvo 4.0 Internacionalna licenca.
