scholarly journals Influence of Particle Size Distribution on the Critical State of Rockfill

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Gui Yang ◽  
Yang Jiang ◽  
Sanjay Nimbalkar ◽  
Yifei Sun ◽  
Nenghui Li
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Critical State ◽  
Large Scale ◽  
Triaxial Tests ◽  
Power Law Function ◽  
Maximum Particle ◽  
Effect Of Particle Size ◽  
The Relationship

In order to study the effect of particle size distribution on the critical state of rockfill, a series of large-scale triaxial tests on rockfill with different maximum particle sizes were performed. It was observed that the intercept and gradient of the critical state line in the e−p′ plane decreased as the grading broadened with the increase in particle size while the gradient of the critical state line in the p′−q plane increased as the particle size increased. A power law function is found to appropriately describe the relationship between the critical state parameters and maximum particle size of rockfill.

scholarly journals INFLUENCE OF GRANULOMETRIC COMPOSITION OF AGGREGATES ON THE PROPERTIES OF CONCRETE AND MORTAR MIXTURES

2020 ◽  
pp. 57-63
Author(s):  
М. С. Сайдумов ◽  
Т. С-А. Муртазаева ◽  
А. Х. Аласханов ◽  
В. А. Байтиев
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Raw Materials ◽  
Grain Composition ◽  
Maximum Particle Size ◽  
Fundamental Research ◽  
Scientific Project ◽  
Maximum Particle ◽  
Effect Of Particle Size

Технологические и эксплуатационные свойства бетонных и растворных смесей формируются за счет правильного учета в их рецептуре таких показателей, как форма и характер поверхности зёрен, зерновой состав, межзерновая пустотность, водопотребность и предельный размер частиц. Поэтому для проектирования доброкачественного состава необходимо изучить влияние гранулометрического состава мелкого и крупного заполнителей на основные свойства бетонных и растворных смесей. В работе поставлена цель оптимизировать гранулометрический состав заполнителей. Работа выполнена в рамках исследований по реализации научного проекта № 18-48-200001 «Высококачественные бетоны с повышенными эксплуатационными свойствами на основе местного природного и техногенного сырья», получившего поддержку Российского фонда фундаменталь- ных исследований» (РФФИ). The technological and operational properties of concrete and mortar mixtures are formed due to the correct consideration in their formulation of indicators such as the shape and nature of the surface of the grains, grain composition, intergranularvoidness, water demand and maximum particle size. Therefore, to design a benign composition, it is necessary to study the effect of particle size distribution of small and large aggregates on the basic properties of concrete and mortar mixtures. The goal is to optimize the particle size distribution of aggregates. The work was implemented as part of research on the fulfillment of scientific project No. 18-48-200001 “High-quality concrete with enhanced performance properties based on local natural and secondary raw materials,” which received support from the Russian Foundation for Fundamental Research (RFFR).

scholarly journals The effect of particle size distribution on froth stability in flotation

2017 ◽  
Vol 184 ◽  
pp. 240-247 ◽  
Author(s):  
A. Norori-McCormac ◽  
P.R. Brito-Parada ◽  
K. Hadler ◽  
K. Cole ◽  
J.J. Cilliers
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Froth Stability ◽  
Effect Of Particle Size

scholarly journals Particle Size Distribution Based Occurrence Features of Organic Components in Printing and Dyeing Wastewater Under a Treatment Process

2019 ◽  
Vol 118 ◽  
pp. 04009
Author(s):  
Yuan Li ◽  
Jie Liu ◽  
Yibiao Yu ◽  
Hao Zhu ◽  
Zheng Shen ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Reverse Osmosis ◽  
Treatment Process ◽  
Dyeing Wastewater ◽  
Wastewater Treatment Process ◽  
Printing And Dyeing Wastewater ◽  
Sedimentation Tank ◽  
The Relationship

A more detailed occurrence features of organic matters in the printing and dyeing wastewater, based on its particle size distribution (PSD) and along with a wastewater treatment process, was conducted to provide a support for advanced treatment. Results suggested that, (1) In the dyeing wastewater, the occurrence characteristic of COD was: soluble>supra colloidal>colloidal>settleable; However, for protein, the supra colloidal was dominant, followed by the soluble. The feature of the polysaccharide was consistent with COD’s. In the wastewater, 29.66% of COD could be attributed to proteins and 3.45% of the COD could be attributed to polysaccharides. (2) The relationship among the forms of COD in the primary sedimentation tank, aerobic tank, secondary sedimentation tank, and reverse osmosis-treated concentrated effluent was consistent, that was: soluble>colloidal>supra colloidal>settleable. (3) In the primary sedimentation tank, the settleable COD was almost completely removed; In the aerobic tank, the residual super colloidal COD was not much; After MBR-RO treatment, the COD in the reverse osmosis concentrated water was almost dissolved and only a little presented in other forms.

scholarly journals Effect of Particle Size Distribution on SiC Ceramic Sinterability

2017 ◽  
Vol 64 (6) ◽  
pp. 281-287 ◽  
Author(s):  
Nur Zalikha KHALIL ◽  
Sanjay Kumar VAJPAI ◽  
Mie OTA ◽  
Kei AMEYAMA
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Sic Ceramic ◽  
Effect Of Particle Size
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