نتایج جستجو برای: strength parameters
تعداد نتایج: 767374 فیلتر نتایج به سال:
Triaxial consolidated drained, unconfined compression, and CBR tests have been conducted in order to study the stress-strain, strength, and volume change characteristics of fine sand specimens reinforced by polymeric fibers made from carpet wastes. The variables are aspect ratio (length/width) and weight percentage of the fibers. The results indicate that the peak strength and total volume chan...
In this study, cement was used as a component to provide stabilizing effect in order evaluate the hardness and stability of loess soil. To strength properties soil reinforced with cement, samples four distinct concentrations (3%, 5%, 7%, 9%) three curing durations (7, 14, 28 days) were generated. During series tests, flexural strength, direct shear indirect tensile unconfined compressive determ...
Used tires are unwanted wastes especially in urban areas and their extent is growing every year. With the development of human societies increasing use automobiles, year millions used collected as garbage around world leave consumption cycle. However, they can be by mixing with soil, one basic building materials, to improve mechanical properties. This article discusses effect adding tire chips ...
to construct copper heap leaching structures, a stepped heap of ore is placed over an isolated sloping surface and then washed with sulphuric acid. the isolated bed of such a heap consists of some natural and geosynthetic layers. shear strength parameters between these layers are low, so they form the possible sliding surfaces of the heaps. economic and environmental considerations call for stu...
in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...
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