CORRELATION BETWEEN TECHNOLOGICAL FACTORS AND BASIC PROPERTIES OF MECHANICALLY ACTIVATED FINE CONCRETES
DOI:
https://doi.org/10.15802/stp2016/61046Keywords:
mechanically activated fine concretes, granulated blast-furnace slags, technological factors, early concrete strength, normal concrete strength, the average density of the concreteAbstract
Purpose. The article highlights research of the influence of fine concrete composition based on blast-furnace slag on general material properties. Time of the concrete treatment in the mixer activator is included to the influence research. Methodology. There was realized full factor experiment of 22 type with following variables: cement versus blast-furnace granulose slag ratio (X1) and time of the treatment in the mixer-activator (X2). Controlled properties are: early concrete strength (Y1=f7 day), normal concrete strength (Y2=f28 day) and average density of the concrete (Y3=ρ), hardened in normal conditions. Findings. Regress model analysis showed that decrease of the aggregate volume in concrete and increase of the mixing time grows up the strength and density of concrete. Different composition of the concrete also significantly affects concrete properties. Thus, for the same treatment time normal concrete strength at 28-day-old reduces by about 30% for compositions proportions 1:3 and 1:4, by 22% between a 1:4 and 1:5 and by 13% for 1:5 and 1:6 cases. The same behavior is obtained for early concrete strength. Density of concrete is not influenced and influence curve is almost flat. The difference between density values for different composition proportions 1:3 and 1:9 is 7.6% at equal mixture time. The increment of mixture processing time of 6 s increase normal concrete strength at 28-day-old about 7-8 % for all compositions in the studied range. Early strength values differ by 12-14 % between treatment time 30 and 36 seconds respectively. Every next six second increase step in treatment time reduce this difference by 1% for every mix compositions. There is practically no change of concrete density during the mixture time varying. Total change is 1-2% for 6 s in the entire research range for all compositions. Originality. For the first time the regression equations were determined, linking the duration of the activation of fine-grained concrete mix and its composition with the basic properties of concrete. Practical value. Regression equations and graphical surface can provide required concrete composition for the established early and normal concrete strength as well as concrete density.
References
Bazhenov Yu. M. Tekhnologiya betonov [Concretes technology]. Moscow, ASV Publ., 2002. 500 p.
Bolshakov V.I., Yelisieieva M.A., Shcherbak S.A. Vliyaniye vysokoskorostnoy obrabotki domennykh granulirovannykh shlakov na ikh svoystva [Influence of high-speed processing of blast-furnace granulated slag on its properties]. Visnyk Prydniprovskoi derzhavnoi akademii budivnytstva ta arkhitektury [Bulletin of Prydniproprovsk State Academy of Civil Engineering and Architecture], 2013, issue 8, pp. 4-9.
Voznesenskiy V.A., Lyashenko T.V., Ogarkov B.L. Chislennyye metody resheniya stroitelno-tekhnologicheskikh zadach na EVM [Numerical methods for the construction and technological problems on a computer]. Kyiv, Vyshcha Shkola Publ., 1989. 328 p.
Kryvenko P.V., Petropavlovskyi O.M., Helevera O.H., Vozniuk H.V., Pushkar V.I., Hots V.I., Tymoshenko S.A. Luzhno-aktyvovani shlakoportlandtsementy [Alkali-activated slag portland cements]. Visnyk Donbaskoi natsionalnoi akademii budivnytstva ta arkhitektury [Bulletin of Donbass National Academy of Civil Engineering and Architecture], 2009, issue 1, pp. 123-131.
Netesa N.I., Palanchuk D.V. Legkiyye betony na osnove granshlaka zavoda imeni Petrovskogo [Lightweight concretes on the basis of granulated slag from the iron and steel plant named after Petrovskiy]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2010, issue 33, pp. 156-161.
Netesa N.I., Palanchuk D.V., Netesa A.N. Legkiyye betony s zoloy unosa Pridneprovskoy TES [Lightweight concretes with fly–ash of Prydniprovsk thermal power station]. Nauka ta prohres transport – Science and Transport Progress, 2013, issue 5, pp. 137-145. doi: 10.15802/stp2013/17978.
Netesa N.I. Snizheniye pustotnosti betonnykh smesey podborom ratsionalnogo zernovogo sostava komponentov [Reduction of concrete voidness mixes of rational selection of the grain components]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2007, issue 15, pp. 200-204.
Yershova N.M., Derevyanko V.N., Timchenko R.A., Shapovalova O.V. Obrabotka dannykh sredstvami Exsel pri planirovanii eksperimenta [Data processing means Exsel when planning experiments]. Dnepropetrovsk, PSACEA Publ., 2012. 350 p.
Pushkarova K.K., Honchar O.A., Bondarenko O.P. Osoblyvosti tekhnolohii otrymannia luzhnoho shlakoportlandtsementu ta betoniv na yikh osnovi [Technology features of alkali slag portland cement and concretes on its basis]. Visnyk Donbaskoi natsionalnoi akademii budivnytstva ta arkhitektury [Bulletin of Donbass National Academy of Civil Engineering and Architecture], 2009, issue 1, pp. 82-88.
Bolshakov V.I., Yeliseyeva M.A., Shcherbak O.S., Shcherbak S A., Yakovenko D.D. Usovershenstvovaniye tekhnologii prigotovleniya mekhanoaktivirovannykh melkozernistykh betonnykh smesey iz domennykh granulirovannykh shlakov [Improving the technology of preparation mechanically activated fine concrete mixtures of granulated blast-furnace slags]. Stroitelstvo, materilovedeniye, mashynostroyeniye [Construction, Materials, Mechanical Engineering], 2013, issue 67, pp. 224-228.
Fedynin N.I., Diamant M.I. Vysokoprochnyy melkozernistyy shlakobeton [High-strength fine slag concrete]. Moscow, Stroyizdat Publ., 1975. 176 p.
Klassen V.K., Shilova I.A., Tekucheva Ye.V., Stepanov V.V. Energo- i resursosberezheniye pri ispolzovanii tekhnogennykh materialov v tekhnologii tsementa [Energy-saving by using man-made materials in cement technology]. Stroitelnyye materialy – Building Materials, 2007, no. 8, pp. 18-19.
Li Chao, Sun Henghu, Li Longtu. A review: The comparison between alkali-activated slag (Si+Ca) and metakaolin (Si+Al) cements. Cement and Concrete Research, 2010, vol. 40, pp. 1341–1349. doi: 10.1016/j.cemconres.2010.03.020.
Maaitah O.V., Hadi N.A.A., Abdelhadi M. Utilization of natural and industrial mineral admixtures as cement substitutes for concrete production in Jordan. Journal of Civil Engineering and Construction Technology, 2015, vol. 6(4), pp. 51–58.
Mudersbach D., Kühn M., Geiseler J. Feingranulierter Hüttensand für die Zementherstellung. Report des FehS-Instituts, 2001, no. 1, pp. 4 – 5.
Živica V. Effectiveness of new silica fume alkali activator. Cement and Concrete Composites, 2006, vol. 28, no. 1, pp. 21–25. doi: 10.1016/j.cemconcomp.2005.07.004.
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