نتایج جستجو برای: basalt fibers
تعداد نتایج: 73921 فیلتر نتایج به سال:
To explore the possibility of providing additional reinforcement to bio-cemented sand through fiber inclusions, a series sand-fiber mixtures were prepared by mixing with three types fibers (polypropylene fiber, basalt and carbon fiber) at different contents (0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 0.8% volume sand). Each mixture was subjected two cycles controlled microbial-induced calcite precipitatio...
Basalt outcrops are significant features in the Western United States and consistently present challenges to Natural Resources Conservation Service (NRCS) soil mapping efforts. Current soil survey methods to estimate basalt outcrops involve field transects and are impractical for mapping regionally extensive areas. The purpose of this research was to investigate remote sensing methods to effect...
Silty clay can be found in the alpine region of Qinghai province, China, where it is subject to annual freeze-thaw cycles. To investigate static mechanical properties silty modified by basalt fiber and powder under action cycles, triaxial compression tests scanning electron microscope were conducted on soil. The test results revealed that varying number cycles resulted different effects soil st...
Introduction: Lunar mare basalts are products of partial melting of the lunar interior, thus are keys to understand the chemical compositions of the source mantle. However, the iron-enrichment of the mare basalt samples returned by Apollo and Luna missions, compared to the terrestrial basalts, have led to an inference that the mare basalt hand specimen do not represent the primary magma composi...
[1] Moon Mineralogy Mapper (M) image and spectral reflectance data are combined to analyze mare basalt units in and adjacent to the Orientale multiring impact basin. Models are assessed for the relationships between basin formation and mare basalt emplacement. Mare basalt emplacement on the western nearside limb began prior to the Orientale event as evidenced by the presence of cryptomaria. The...
Imnaha Basalt and Grande Ronde Basalt (RI) of the Columbia River Basalt Group form a small synclinal basin immediately west of Riggins, Idaho. The displacement of the margins of the basalt outcrop, of the synclinal axis, and of a dike of Saddle Mountains(?) Basalt define a pattern best explained by a model of west-northwest to eastsoutheast and north-northwest to south-southeast dextral strike-...
Abstract PVA fiber and basalt are two kinds of common fibers used to reinforce cementitious materials widely in engineering, therefore it is great interest study the effect content on strength change materials. In this study, unconfined compressive strength(UCS) test digital image correlation (DIC) cement soil with different contents (0,0.25%, 0.5%, 0.75% 1%) were carried out. The following con...
The bending performance of a basalt-polypropylene fiber-reinforced concrete (HBPFRC) was characterized by testing 24,400 × 100 mm3 prismatic specimens in four-point test JSCE-SF4 configuration. type and content both fibers were varied order to guarantee different target levels post-cracking flexural performance. results evidenced that mono-micro basalt fiber reinforced (BFRC) allows the increas...
Ancient lunar volcanic deposits, known as cryptomaria, have been detected by remote telescopic and orbital measurements since the 1970s. Cryptomaria are most easily identified by the presence of darkhalo impact craters and are associated with a mare basalt mineralogy, which is indicated by two pyroxene spectral absorption features near 1 μm and 2 μm in the visible to near-infrared (VNIR) wavele...
Fibrous materials are often used in the manufacturing of fire protection devices such as curtains. Their optimization and improved performance is still a topic interest. The present work aims to develop test new combination fibers arranged various 2D 3D patterns with coatings. For this purpose, basalt were added into glass fiber fabric, wires shape memory material (SMM) inserted fabric create a...
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