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A generalized Bayesian approach for prediction of strength

A generalized Bayesian approach for prediction of strength

Aug 01, 2021 The intact physical properties include the unconfined compressive strength (q u), in situ water content (w), point load strength index (I), Poisson's ratio (ν), and the intact deformation modulus (E i) for sedimentary (e.g., shale, mudstone, claystone, sandstone, siltstone), metamorphic (e.g., slate) and igneous (e.g., ignimbrite, granite) rocks.. Specimen size (i.e., rock core diameter

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(PDF) Estimation of rock engineering properties using

(PDF) Estimation of rock engineering properties using

For this relationship, the correla- obtained especially between UCS and both abrasion tion coefficient, R is 0.85. Fig. 5. The relationship between unconfined compressive strength and Fig. 7. The relationship between unconfined compressive strength and Schmidt hammer (low density dolomite and dolomitic limestone)

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normal compressive crushing strength of sedimentary limestone

normal compressive crushing strength of sedimentary limestone

The highest unconfined compressive strength observed in a rock is on the ... the typical unconfined compressive, tensile, and shear strengths for a ... is the indurated metamorphic form of the sedimentary rock shale (Table 2). ... there are stresses acting normal to the plane ... Marble: similar to limestone or dolomite and smaller strength

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VARIATIONS IN STRENGTH, MOISTURE CONTENT AND UNIT

VARIATIONS IN STRENGTH, MOISTURE CONTENT AND UNIT

variations in strength, moisture content and unit weight for lime-soil mixtures. this article reports the results of a laboratory investigation involving the addition of nine hydrated limes (four high calcium, one dolomitic, three semihydraulic and one hydraulic) and a portland cement to four soils (a sand, a silty loam, a clay loam, and a clay)

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LIME AND FLY ASH PROPORTIONS IN SOIL, LIME AND FLY ASH

LIME AND FLY ASH PROPORTIONS IN SOIL, LIME AND FLY ASH

recommended amounts of lime and fly ash for stabilizing the different soils are given. data are presented to show the influence of type of lime and kind of fly ash on the unconfined compressive strength of stabilized soils. a durability evaluation of selected soil-lime-fly ash and soil cement mixtures by the iowa freeze-thaw test is presented

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unconfined coppessive strength of limestone and mill

unconfined coppessive strength of limestone and mill

Nov 05, 2013 Mechanical Properties of Dolomitic limestone … showing frequency versus difference in estimated unconfined compressive strength … What is the compressive strength of Limestone – The Q&A wiki Intact Limestone can have a uniaxial compressive strength

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Strength Characteristics for Limestone and Dolomite

Strength Characteristics for Limestone and Dolomite

Compressive strength (N/mm ) 29.05 - - - Without binding material c (N/mm2) - 4.9 2.8 0.4 Ф (˚) - 13 15 23 E (N/mm2) - 757.52 747.76 421.53 Dolomite With binding material c (N/mm2) 9 6 2.7 1.1 Ф (˚) 24 29 31 33 E (N/mm2) 1123.43 1064.61 837.21 738.96 Compressive strength (N/mm2) 80.18 - - - Without binding material

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Predicting Unconfined Compressive Strength of Intact

Predicting Unconfined Compressive Strength of Intact

Bedrock unconfined compressive strength (UCS) is a key parameter in designing the geosciences and building related projects comprising both the underground and surface ... Travertine, limestone, dolomitic limestone, and schist [25] UCS 165 .05 exp[ 4.452 /V p] Limestone

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Empirical relations between rock strength and physical

Empirical relations between rock strength and physical

between these parameters and unconfined compressive strength. These general correlations are seen in the laboratory data presented in Figs. 1–3 for sandstone, shale, and limestone and dolomite, respectively. Despite the considerable scatter in the data, for each rock type, there is a marked decrease in strength with Δt and ϕ, Fig. 1

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Prediction of unconfined compressive strength of limestone

Prediction of unconfined compressive strength of limestone

The unconfined compressive strength (UCS) is the most useful index to assess the intact strength of the rock, which decreases with increasing of the weathering grade (e.g., Dearman et al., 1978

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Axial Capacity of Drilled Shafts in Rock

Axial Capacity of Drilled Shafts in Rock

including limestone, dolomite, sandstone, as well as hard shale deposits with an unconfined compressive strength (q. u) exceeding 100 ksf. Drilled shafts in softer shale deposits having a q. u. less than 100 ksf should be analyzed in accordance with the design guide for the Axial Capacity of Drilled Shafts in Shale. Publication

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STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1

STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1

50 MPa. Low porosity dolomite and quartzite can have unconfined compressive strengths upto 300 MPa. (6) uniaxial tensile strengths are usually 10 to 20 times lower than unconfined compressivestrengths. (7) end effects can have a large effect on rock strength. The test specimens must be largeenough to reduce that effect

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THE USE OF GRANULATED LIMESTONE

THE USE OF GRANULATED LIMESTONE

PC concrete with an average 28-day unconfined compressive strength of 4200 psi. Sodium silicate was a much weaker binding agent than PC and possibly showed signs of solubility

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Factors Affecting Unconfined Compressive Strength of

Factors Affecting Unconfined Compressive Strength of

mersed compressive strength and sodium chloride con tent was parabolic, with maximum strengths at 7, 28, and 120 d curing times at a sodium chloride content of 1 percent. They also reported that 1 percent sodium chlo ride in conjunction with either calcitic hydrated lime or dolomitic monohydrate lime and fly ash produced higher

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Potential Use of Dolomite Hydrated Lime in Sustainable

Potential Use of Dolomite Hydrated Lime in Sustainable

which were hydrated to get the dolomite hydrated lime. 4 Testing Procedure 4.1 Unconfined Compressive Strength (UCS) Test UCS test have been carried out based on the Indian Standard 2720 (part-10) 1973. The samples have been mixed with dolomite hydrated lime at varying percentages such as 5%, 10%, 15% and 20%. After preparing the

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Correlation of Geo-Mechanics Parameters with Uniaxial

Correlation of Geo-Mechanics Parameters with Uniaxial

Aug 17, 2018 This paper estimates the correlation between the physical and mechanical characteristics of dolomitic limestone. Forty samples were measured and the results were used to derive the empirical equations for the relations between the uniaxial compressive strength (UCS), elastic modulus (E), P-wave velocity (\(v_{p}\)), Poisson’s ratio (μ), point load strength, and density (ρ)

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Co1nparative Effects of Hydraulic, Calcitic And Dolomitic

Co1nparative Effects of Hydraulic, Calcitic And Dolomitic

types of lime, hydraulic, calcitic hydrated, dolomitic monohy drate, and dolomitic dihydrate were selected. For comparison, a sample of type I cement was also used. The effects on plas ticity were studied with a very heavy clay (gumbotil), and the effects on unconfined compressive strength

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Geological Alterations and Chemical Treatment of a

Geological Alterations and Chemical Treatment of a

unconfined compressive strength. Another classification is based on the modulus ratio which is the ratio of elasticity modulus to the uniaxial compressive strength (Roberts, 1977). Boynton (1980) reported some data on the physical properties of limestone. The hardness of

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Effect of Lime on Soil Strength

Effect of Lime on Soil Strength

The unconfined compressive strength of soil-lime mix increases with increasing lime content to a certain level, usually about 8 per cent for clay soils (Ingles and Metcalf, 1972). The rate of increase then diminishes until no further strength gain occurs with increasing lime content. The effect of lime content on compressive strength of fine

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Estimation of strength characteristics of different

Estimation of strength characteristics of different

Various rock types—including highly deformed to undeformed quartzites, granites, granitic gneisses, gneisses, metabasics (meta-amphibolites and meta-dolerite), and dolomites—collected from different formations of the Lesser and Higher Himalayas were tested to evaluate correlations between the uniaxial compressive strength (UCS) and the point load test (PLI), Schmidt hammer rebound (SHR

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