Abstract

Introduction. The processes of structure formation of cement compositions and the development of effective technologies of building materials is an urgent task for building material science. The use of large-scale man-made product of pulp and paper enterprises – osprey as a fibrous filler in organic and mineral compositions is the successful decision of the problem. The paper analyzes the ways of using osprey in the building materials’ production. The aim of the research is to study the osprey influence on the processes of structure formation of cement stone by quantitative x-ray phase analysis.Materials and methods. The organic and mineral compositions were obtained on the basis of portland cement and osprey. The authors studied the compositions’ phase of osprey, portland cement and the processes of cement stone structure formation in organ and mineral compositions by quantitative x-ray phase analysis.Results. The authors determined the compositions’ phase of mineral impurities of osprey, cellulose, cement, cement stone, organic and mineral compositions and two compositions containing 25 and 75% by weight.Discussion and conclusions. The osprey application as a filler in the organic and mineral composition causes inhibition of processes of cement hydration. The presence of osprey in the hardening organic and mineral composition leads to a change in the composition and structure of the cement stone in comparison with the phase composition of the cement stone without additives. The result of these changes is a significant increase in the amount of calcite, waterite and a significant decrease in the amount of portland. The authors establish that the effective joint work of the reinforcing component of the osprey with the cement matrix is possible with a limited amount of osprey in organic and mineral compositions.

Highlights

  • Развитие строительного производства обусловливает необходимость создания эффективных высококачественных материалов, применение которых является экономически целесообразным и позволяет сократить энергетические затраты и расход сырьевых ресурсов

  • the development of effective technologies of building materials is an urgent task for building material science

  • mineral compositions is the successful decision of the problem

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Summary

МАТЕРИАЛЫ И МЕТОДЫ

Для приготовления органоминеральных композиций были использованы скоп предприятия ООО «Пермский картон» и портландцемент предприятия ООО «Горнозаводскцемент» ЦЕМ I 42,5 Н, соответствующий требованиям ГОСТ 31108–2016. Влажность скопа при изготовлении образцов из органоминеральных смесей составляла 300% мас. При влажности скопа 300% содержание волокон целлюлозы в составах 1 и 2 в пересчете на сухое вещество составляло соответственно 7,69 и 20,00 мас.%. Процессы гидратации цемента оценивали по содержанию образовавшихся кристаллических фаз – портландита, кальцита, ватерита и гипса и количеству негидратированных клинкерных минералов. Рисунок 7 – Количественный рентгенофазовый анализ органоминеральной композиции состава 2, включающей 25 % мас. Содержание негидратированных клинкерных минералов в цементном камне составляет 69,53 ± 6,72%, а степень гидратации цемента 30,47 ± 6,72%. Полностью гидратирует C3A, C3S на – 39,9%, b-C2S – на 41,2%, гидратации ά’-C2S и C4AF не наблюдается

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