bzhbБетон и железобетонConcrete and Reinforced Concrete0005-98893034-1302АО «НИЦ «Строительство»bzhb-56Research ArticleСтатьиОптимизация зернового состава и влажности сырьевой смеси в технологии гиперпрессованного бетонного кирпичаOptimization of grain composition and moisture content of the raw mix in the technology of hyper-pressed concrete bricksБеловВ. В.BelovV. V.

д-р техн. наук, заведующий кафедрой производства строительных изделийи конструкций

e-mail: vladim-bel@yandex.ru 

Doctor of Sciences (Engineering), Head of the Department of Production of Building Products and Structures

e-mail: vladim-bel@yandex.ru 

vladim-bel@yandex.ruТверской государственный технический университетРоссияTver State Technical UniversityRussian Federation202114092023607-6085-64447Copyright © Белов В.В., 20232023Белов В.В.Belov V.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.bzhb.ru/jour/article/view/56

Изложены предпосылки оптимального проектирования гранулометрических составов строительных смесей для получения прессованных бетонов на цементной связке, базирующиеся на закономерностях формирования полидисперсных структур. Приведен экспериментальный метод определения оптимальной гранулометрии сырьевых смесей с наиболее плотной упаковкой зерен, обеспечивающей наилучшие параметры уплотнения смесей при гиперпрессовании. Показано влияние влажности сырьевой смеси на упаковку ее частиц и насыпную плотность, а также прочность готового материала с учетом действия капиллярного сцепления в дисперсных системах.

The prerequisites for the optimal design of granulometric compositions of building mixes for the production of pressed concrete on a cement bond, based on the regularities of the formation of polydisperse structures, are described. An experimental method for determining the optimal granulometry of raw mixtures with the most dense packing of grains, providing the best compaction parameters of mixtures when hyperpressing, is presented. The influence of the moisture content of the raw mixture on the packaging of its particles and bulk density, as well as the strength of the finished material, taking into account the action of capillary coupling in dispersed systems, is shown.

аутогезиякапиллярные силывлияние влажностисырьевые смеси строительных материаловautohesiacapillary forcesinfluence of humidityraw mixtures of building materialsReferencesМиронов В.А., Белов В.В., Голубев А.И., Смирнов М.А. Оптимизирование композиций для изготовления строительных смесей. СПб.: РИА «Квинтет», 2008. 416 с.Mironov V.A., Belov V.V., Golubev A.I., Smirnov M.A. Optimizirovanie kompozitsii dlya izgotovleniya stroitel’nykh smesei [Optimization of compositions for the manufacture of building mixes]. Saint Petersburg: Quintet. 2008. 416 p.Зимон А.Д., Андрианов Е.И. Аутогезия сыпучих материалов. М.: Металлургия, 1977. 277 с.Zimon A.D., Andrianov E.I. Autogeziya sypuchikh materialov [Autogenesis of bulk materials]. Moscow: Metallurgiya, 1977. 277 p.Удалов Ю.П. Технология неорганических порошковых материалов и покрытий функционального назначения. СПб.: Янус, 2001. 428 с.Udalov Yu.P. Tekhnologiya neorganicheskikh poroshkovykh materialov i pokrytii funktsional’nogo naznacheniya [Technology of inorganic powder materials and functional coatings]. Saint Petersburg: Janus, 2001. 428 p.Zimon A.D. Adhesion of dust and powder. Springer Science & Business Media, 2012.Zimon A.D. Adhesion of dust and powder. Springer Science & Business Media, 2012.Li Hongming. Impact of cohesion forces on particle mixing and segregation. University of Pittsburgh, 2006.Li Hongming. Impact of cohesion forces on particle mixing and segregation. University of Pittsburgh, 2006.Halidan M. The effect of interparticle cohesion on powder mixing in a ribbon mixer // <i>AIChE Journal</i>. 2016. Vol. 62. No. 4, pp. 1023–1037.Halidan M. The effect of interparticle cohesion on powder mixing in a ribbon mixer // <i>AIChE Journal</i>. 2016. Vol. 62. No. 4, pp. 1023–1037.Podczeck F., Newton J.M., James M.B. Adhesion and autoadhesion measurements of micronized particles of pharmaceutical powders to compacted powder surfaces // <i>Chemical and pharmaceutical bulletin</i>. 1995. Vol. 43. No. 11, pp. 1953–1957.Podczeck F., Newton J.M., James M.B. Adhesion and autoadhesion measurements of micronized particles of pharmaceutical powders to compacted powder surfaces // <i>Chemical and pharmaceutical bulletin</i>. 1995. Vol. 43. No. 11, pp. 1953–1957.Bridgwater J. Fundamental powder mixing mechanisms // <i>Powder Technology</i>. 1976. Vol. 15. No. 2, pp. 215–236.Bridgwater J. Fundamental powder mixing mechanisms // <i>Powder Technology</i>. 1976. Vol. 15. No. 2, pp. 215–236.Orr N.A., Shotton E. Mixing of cohesive powders // <i>Chemical Engineer-London</i>. 1973. No. 269, pp. 12–19.Orr N.A., Shotton E. Mixing of cohesive powders // <i>Chemical Engineer-London</i>. 1973. No. 269, pp. 12–19.Parteli E.J.R. Attractive particle interaction forces and packing density of fine glass powders // <i>Scientific reports</i>. 2014. Vol. 4, pp. 6227.Parteli E.J.R. Attractive particle interaction forces and packing density of fine glass powders // <i>Scientific reports</i>. 2014. Vol. 4, pp. 6227.Ku N. Auto-granulation of fine cohesive powder by mechanical vibration // <i>Procedia engineering</i>. 2015. Vol. 102, pp. 72–80.Ku N. Auto-granulation of fine cohesive powder by mechanical vibration // <i>Procedia engineering</i>. 2015. Vol. 102, pp. 72–80.Ku N. Evaluation of the behavior of ceramic powders under mechanical vibration and its effect on the mechanics of auto-granulation. Rutgers The State University of New Jersey – New Brunswick, 2015.Ku N. Evaluation of the behavior of ceramic powders under mechanical vibration and its effect on the mechanics of auto-granulation. Rutgers The State University of New Jersey – New Brunswick, 2015.Castellanos A. The relationship between attractive interparticle forces and bulk behaviour in dry and uncharged fine powders // <i>Advances in physics</i>. 2005. Vol. 54. No. 4, pp. 263–376.Castellanos A. The relationship between attractive interparticle forces and bulk behaviour in dry and uncharged fine powders // <i>Advances in physics</i>. 2005. Vol. 54. No. 4, pp. 263–376.Chirone R. A comparison between interparticle forces estimated with direct powder shear testing and with sound assisted fluidization // <i>Powder Technology</i>. 2018. Vol. 323, pp. 1–7.Chirone R. A comparison between interparticle forces estimated with direct powder shear testing and with sound assisted fluidization // <i>Powder Technology</i>. 2018. Vol. 323, pp. 1–7.Белов В.В. Капиллярное структурообразование в дисперсных системах, применяемых для производства строительных материалов // <i>Известия вузов. Строительство</i>. 2002. № 9. С. 46–51.Belov V.V. Capillary structure formation in dispersed systems used for the production of building materials. <i>Izvestiya vuzov. Stroitel’stvo</i>. 2002. No. 9, pp. 46–51.Bornemann R., Schmidt M. Grundlagen und Strategien zur Verbesserung erdfeuchter Betone, Teil I. Betonwerk + Fertigteil-Technik, Heft 8, 2005, pp. 44–51.Bornemann R., Schmidt M. Grundlagen und Strategien zur Verbesserung erdfeuchter Betone, Teil I. Betonwerk + Fertigteil-Technik, Heft 8, 2005, pp. 44–51.

The authors declare that there are no conflicts of interest present.