آخرین محصولات
(PDF) Chapter 4 Properties of Rock Materials CHAPTER 4 PROPERTIES …
The mechanical response of geomaterials is highly influenced by geometrical and material heterogeneity. To date, most modelling practices consider heterogeneity qualitatively and the choice of input parameters can be subjective.
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Impact of acid wormhole on the mechanical properties of chalk
Gou et al. (2019) experimentally examined the impact of acid on the deterioration of dolomite rock mechanical properties. They evaluated both dynamic and static mechanical properties of treated and untreated sister samples. A significant reduction in Young's modulus (YM) and Poisson's ratio (PR) was reported.
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(PDF) Physio-Mechanical Characterisation of Rocks
Abstract and Figures. The present study aims to investigate the physical, petrological and mechanical properties of ten different types of rocks in the Indian subcontinent, required for the design ...
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Strength prediction model of fractured dolomite and …
Acquiring a comprehensive understanding of the mechanical properties of dolomite is essential for ensuring the safety of these underground constructions. …
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Mechanical properties of Blair dolomite
Pressure-volume, uniaxial stress loading to failure, uniaxial strain, and acoustic velocity determinations were made on Blair dolomite at confining pressures ranging to 3.5 GPa …
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Structural and mechanical properties of dolomite rock …
This work is devoted to structural and mechanical properties of CaMg(CO 3) 2 –dolomite mineral. From Birch–Murnaghan equation of state (BM-EoS) applied to the …
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Properties of concrete with binary binder system of calcined dolomite
Natural crushed dolomite with a specific gravity of 2.65 and a particle size range of 4.75–12.5 mm was used as a coarse aggregate in all mixtures, while a fine aggregate of natural sand with a specific gravity of 2.5 was used in all concrete mixtures. ... In terms of mechanical properties, all concrete mixtures with CDP-RHA (except D30R70 ...
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(PDF) Mechanical, thermal and flammability properties of dolomite
The objective of this study is to determine the effects of dolomite content on flammability, thermal and mechanical properties of polybutylene terephthalate (PBT)/ dolomite composites. PBT and dolomite were blended together at different dolomite contents (5 wt%, 10 wt% and 15 wt%) via twin screw extruder prior to injection moulding.
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Impact of acid wormhole on the mechanical properties of chalk
The rock petrophysical (i.e., porosity, permeability) and mechanical properties were measured before and after the treatment. XRD was used to estimate the mineralogical compositions of each rock type.
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Characterization and Evaluation of Mechanical …
The mechanical and end use properties of natural rubber reinforced rice-husk/Carbon Black hybrid filler, was investigated. Hybrid filler were used to prepare a natural rubber vulcanizate in order to determine testing data …
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Mechanical and hydraulic properties of residual dolomite and wad
Abstract and Figures. The properties of residual dolomite, sometimes termed wad, are variable and uncertain. It represents the insoluble residue after dissolution of dolomite and is commonly found ...
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Destructive and Non Destructive Test Characteristics of …
Steel slag; mechanical properties; permeability; upv; rebound number Introduction Since the aggregates are the most volumetric com- ponent of concrete due to occupation of 65–75% of ... gate and dolomite are 0.50 and 1.15, respectively. Table 1 shows the chemical analysis of OPC, FA, D and SA. The fine aggregate utilized was character-
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SciELO
3 BASIC MECHANICAL PROPERTIES 3.1 Load-deflection and stress-strain curves. Figure 4 shows the load-deflection curves of five kinds of rock beams, which are quite different each other. The pre-peak curves of the red-sandstone and yellow-sandstone specimens are approximately linear, while the pre-peak curves of the other three types of rock beams …
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(PDF) Physical, Petrographic, and Mineralogical …
This paper presents the physical, mechanical and mineralogical properties of ophiolitic rocks from Yakakayi dam site located 25 km away from the northern part of Eskisehir province.
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Dolomite : Properties, Formation, Occurrence and Uses …
Physical Properties: Dolomite is often recognized by its distinctive pinkish or gray color and its relatively high hardness on the Mohs scale, usually ranging from 3.5 …
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Crystallization behavior and mechanical properties of …
Dolomite (CaMg(CO 3) 2) is a type of abundant natural mineral, which is over 4 billion tons in China [31]. Dolomite can decompose into CaCO 3, MgO and CO 2 at …
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An Innovative Material with Strong Frost Resistance—Concrete …
Numerous studies established that dolomite powder influenced the working properties, cement hydration process, and mechanical properties of concrete [12,13]. Yan et al. discovered that as the specific surface area of dolomite powder increased, the fluidity and dry shrinkage of mortar increased as well [ 14 ].
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Strength prediction model of fractured dolomite and analysis of
In order to study the mechanical properties of fractured dolomite, this paper first uses the rubbing method to count the surface fracture of the dolomite rock samples, obtains the main parameters ...
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Effects of sintering temperature on mechanical properties of …
In this study, the continuous alumina fibers reinforced alumina matrix (Al 2 O 3 /Al 2 O 3) composites were fabricated through sol–gel method at a sintering temperature range of 900–1400 °C, and their mechanical properties were analyzed separately.To explore the effects of sintering temperature on mechanical properties of composites, …
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MECHANICAL AND THERMAL PROPERTIES OF …
Enhanced thermal stability and flammability properties of dolomite filled polymer composites has been attributed to its inherent endothermic decomposition and dilution …
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Structural and mechanical properties of dolomite rock under high
This work is devoted to structural and mechanical properties of CaMg(CO 3) 2 –dolomite mineral. From Birch–Murnaghan equation of state (BM-EoS) applied to the energy–volume data of the dolomite polymorph, we obtain a bulk modulus of 93.7 GPa with a pressure derivative of 4.7, which show suitable agreement with experimental data.
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Improving the Tensile and Tear Properties of Thermoplastic …
In this context, dolomite particles dispersion in the TPS matrix is very important, since it can affect the mechanical properties of the resultant TPS-DOL biocomposite films. Previous research indicated that a good dispersion of filler leads to improvement in the mechanical properties of the TPS composites, such as tensile and …
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Characterization and Evaluation of Mechanical Properties of Dolomite …
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(PDF) PHYSICAL AND MECHANICAL PROPERTIES OF DOLOMITES RELATED …
According to the physical and mechanical properties, the best variety to use as a crushed stone or as an aggregate proved to be the late-diagenetic dolomite from the Dolje Quarry.
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The Mechanical and Thermal Properties of Poly (ethylene-
Results showed that there was an improvement in mechanical properties when 20% of dolomite was used as filler. Tensile strength of the polypropylene was increased by 37%. This research revealed that the use of compatibilizer can enhance the interfacial adhesion between the polymer and dolomite filler.
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Tensile strength of PBT and PBT/dolomite composites.
The introduction of dolomite as a filler was intended to enhance the mechanical and thermal properties of polymer composite forms [10,[21] [22] [23]. In addition, the availability of dolomite as a ...
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Dolomite | Formation, Structure, Properties, Uses, & Facts
Dolomite, type of limestone, the carbonate fraction of which is dominated by the mineral dolomite, calcium magnesium carbonate. Along with calcite and aragonite, dolomite makes up approximately 2 percent of the Earth's crust. Learn more about the structure, properties, and uses of dolomite in this article.
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Effect of Marble Powder and Dolomite on the Mechanical Properties …
However, it was found that the use of dolomite in its raw form could not improve the mechanical properties of the polymeric matrices. This is because dolomite particles easily agglomerate, while ...
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Characterization and Evaluation of Mechanical Properties of Dolomite …
The aim of this research work is to evaluate the effect of Dolomite filler on the mechanical properties of composite produced from dolomite-polyester reinforcement. View full-text.
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Structural and mechanical properties of dolomite rock under high
Request PDF | Structural and mechanical properties of dolomite rock under high pressure conditions: A first‐principles study | The structural behaviour of carbonate minerals under lower mantle ...
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