GRANULATION AS ONE OF THE MEANS OF FINE DUST WASTE DISPOSAL

One of the most perspective ways of environmentally friendly fly ashes storage is their storing in the form of granules that can later be used as aggregate for concrete production.Одним из перспективных способов экологически чистого складирования золошлаков является складирование их в виде гранул, которые в дальнейшем могут быть использованы в качестве заполнителя для бетона

Concrete composition selection on unburned gravel from fly-ash

On the basis of unburned ash gravel, the composition of concrete is selected and their physico-mechanical properties are determined. In terms of density, they refer to lightened concrete (1817–1857 kg/m3), strengths correspond to classes B10, B12.5 and B25. The introduction of a superplasticizer additive reduces the water requirement of the concrete mix and increases the strength of the concrete.На основе безобжигового зольного гравия подобраны составы бетонов и определены их физико-механические свойства. По плотности они относятся к облегченным бетонам (1817–1857 кг/м3), прочности ‒ соответствуют классам В10, В12,5 и В25. Введение добавки суперпластификатора снижает водопотребность бетонной смеси и повышает прочность бетона

Effect of fly-ash additional grinding on unburnt ash gravel granularability and properties

The influence of additional ash grinding on the unburnt ash gravel physical and mechanical properties, which used as artificial concrete aggregate, is considered. It is shown that additional grinding increases the ashes activity and contributes to the increase in the gravels strength.Рассматривается влияние дополнительного измельчения золы на физико-механические свойства безобжигового зольного гравия ‒ искусственного заполнителя для строительных бетонов. Показано, что помол повышает активность золы и способствует увеличению прочности гравия

Active tuberculosis, sequelae and COVID-19 co-infection: first cohort of 49 cases.

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) disease (COVID-19) pandemic has attracted interest because of its global rapid spread, clinical severity, high mortality rate, and capacity to overwhelm healthcare systems [1, 2]. SARS-CoV-2 transmission occurs mainly through droplets, although surface contamination contributes and debate continues on aerosol transmission [3\u20135]

Active tuberculosis, sequelae and COVID-19 co-infection: First cohort of 49 cases

Diagnostic, treatment and outcome details of 49 COVID-19 patients with concurrent or previous tuberculosis from 8 countries show varied clinical profiles https://bit.ly/369ZGG