Physical and Compaction Properties of Granular Materials with Artificial Grading behind the Particle Size Distributions
نویسندگان
چکیده
منابع مشابه
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چکیده: در این تحقیق، برخی خواص فیزیکی و مکانیکی لوبیا قرمز به-صورت تابعی از محتوی رطوبت بررسی شد. نتایج نشان داد که رطوبت بر خواص فیزیکی لوبیا قرمز شامل طول، عرض، ضخامت، قطر متوسط هندسی، قطر متوسط حسابی، سطح تصویر شده، حجم، چگالی توده، تخلخل، وزن هزار دانه و زاویه ی استقرار استاتیکی در سطح احتمال 1 درصد اثر معنی داری دارد. به طوری که با افزایش رطوبت از 54/7 به 12 درصد بر پایه خشک طول، عرض، ضخام...
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Objective Eudragits are widely used polymers in the production of oral sustained release dosage forms. The application of these polymers in the production of inert insoluble matrices has been investigated. However the effect of particle size, compaction force and presence of Aerosil 200 as a glidant on the properties of Eudragit RS and RL matrices prepared by direct compression of their physic...
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We present both experimental and numerical investigations of compaction in granular materials composed of rods. As a function of the particles size and with respect to the container diameter, we have observed large variations of the asymptotic packing volume fraction. The relevant parameter is the ratio between the rod length l and the tube diameter D . Even the compaction dynamics remains unch...
متن کاملCompaction of granular materials: experiments and contact dynamics simulations
We present an original experimental study of the slow compaction dynamics for twodimensional isotropic granular systems. Compaction dynamics is measured at three different scales : the macroscopic scale through the normalized packing fraction ρ̃, the mesoscopic scale through the normalized fraction φ̃ of domains ideally ordered in the system, and the microscopic scale through the grain mobility μ...
متن کاملeffect of particle size, compaction force and presence of aerosil 200 on the properties of matrices prepared from physical mixture of propranolol hydrochloride and eudragit rs or rl
objective eudragits are widely used polymers in the production of oral sustained release dosage forms. the application of these polymers in the production of inert insoluble matrices has been investigated. however the effect of particle size, compaction force and presence of aerosil 200 as a glidant on the properties of eudragit rs and rl matrices prepared by direct compression of their physica...
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ژورنال
عنوان ژورنال: Advances in Materials Science and Engineering
سال: 2018
ISSN: 1687-8434,1687-8442
DOI: 10.1155/2018/8093571