Influences of Moisture Content on Resilient Modulus of Unbound Crushed
In this research, a set of laboratory tests were conducted on unbound crushed limestone. Two gradations of the limestone were selected to determine the resilient modulus using the repeated-load tri-axial test according to AASHTO T307. ... Since the resilient/elastic modulus is most integral and resilient properties (including Poisson's ratio ...
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Young's Modulus, Creep, and Shrinkage of Gap-Graded …
modulus of elasticity in compression, less shrinkage, and less creep than its continuously graded colll}terpart of the same maximum size of ... gravity of 2. 63, crushed limestone with an absorption of 0. 58 percent and a saturated surface-d1·y specific gravity of 2. 73, Type 1 portland cement, and "Protex" air ...
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Variations in the elastic modulus of limestone with …
Experiments with ten groups of limestone specimens (four samples per group) under ten specific temperatures, 25 °C, 100 °C, 200 °C, 300 °C, 400 °C, 500 °C, 600 °C, 700 °C, 800 °C, and 900 °C,...
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Study on Shrinkage and Elastic Modulus of Limestone Calcined …
3.1 Elastic Modulus. Figure 1 presents the elastic modulus of the concrete mixes at different ages with a w/b ratio of 0.4. The same concrete specimens were tested at 7, 28 and 90 days. At 7 days, all mixes have elastic modulus values just below or just above 40 GPa, and the difference is small between the highest value of 41.6 GPa from the reference mix R1 and lowest value of 36.8 …
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Prediction of the static elastic modulus of limestone using …
There are two methods for obtaining the elastic modulus: direct and indirect. In the direct or destructive procedure, which is also called static method, the rock sample is …
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Sustainable valorisation of sand concrete properties using
Moreover, replacing 60% of the limestone sand with crushed sand resulted in a 17% improvement in the dynamic modulus of elasticity (Jaradat et al., 2021a). Replacing 30% of the limestone sand in sand concrete resulted in a 13% increase in flexural strength and a 1.8% increase in Ultrasonic Pulse Velocity test after 28 days (Jaradat et al., 2023b ).
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EVALUATION OF THE ELASTICITY MODULE IN …
2.5 mm a crushed California limestone (the standard stress corresponds to 6900 kPa). 2.3 Elastic Behavior in CBR Tests Opiyo in 1995 proposed a methodology to determine the elasticity modulus of the material, from the elastic deformations that occur during the CBR test. This proposal considers that the total deformations registered in
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Correlation between Static and Dynamic Elastic Modulus of …
1. INTRODUCTION The uniaxial compressive strength (UCS) and elastic properties of rocks such as Young's modulus and Poisson's ratio are widely used to estimate in situ stresses,
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Report No. REC-ERC-74-10, Rock Mechanics Properties of …
Limestone,argillaceous HungryHorseDamsite Montana 61 Quartzite FlamingGorgeDamsite Utah 63 Quartzite, schistose KosiDamsite India 65 ... STATIC MODULUS OF ELASTICITY SPECIFIC GRAVITY ABSORPTION,% No. No. spec. avg 2.94 range 0.16 ~g 0.1 range 0.1 spec. stressrange psi 0-2000 0-4000 0-6000 0-8000 Secant E 106psi 13.5 13.8 13.2 12.9 ~ …
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ESTIMATION OF THE COMPRESSIVE STRENGTH …
Same as the results of strength measurements, the elastic modulus of recycled concrete mixtures are 20 to 30 percent lower than that of crushed limestone mixtures. The effects of mixing variables on the development of the modulus …
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Mechanical property and thermal damage factor of limestone at …
Experiments with ten groups of limestone specimens (four samples per group) under ten specific temperatures, 25 °C, 100 °C, 200 °C, 300 °C, 400 °C, 500 °C, 600 °C, 700 °C, 800 °C, and 900 °C, show that the high-temperature effect on the elastic modulus of rocks conforms to thermoelastic responses with a quadratic temperature function.
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Influence of crushed sand on the dynamic modulus of elasticity of …
Tests were used: workability, compressive strength, ultrasonic pulse velocity test, and dynamic modulus of elasticity.The results show that the addition of limestone filler had a clear improvement ...
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Modulus of Elasticity of Concrete Affected by Elastic Moduli of …
A general equation is derived which expresses the modulus of elasticity of concrete or mortar in terms of an empirical constant, the elastic moduli of the cement matrix and aggregate constituents, and the mix proportions. ... ±35 percent.|The variety of aggregate materials used included steel punchings, crushed glass, lead drops, Ottawa sand ...
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Results of the modulus of rupture and the modulus of …
Table 2 summarizes the results of the modulus of rupture and the modulus of elasticity of limestone specimens loaded parallel and perpendicular to bedding (or rift) for average of dry and...
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Limestone
Limestone is a type of common industrial natural stone. It has the highest tensile strength and the lowest thermal conductivity among natural stone materials. ... Elastic (Young's, Tensile) Modulus. 77 GPa 11 x 10 6 psi. Poisson's Ratio. 0.25. Shear Modulus. 30 GPa 4.4 x 10 6 psi. Tensile Strength: Ultimate (UTS) 100 MPa 15 x 10 3 psi. Thermal ...
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Title no. 106-S64 A Practical Equation for Elastic Modulus of …
Equation (2), proposed by ACI Committee 363,12 slightly underestimates the modulus of elasticity when crushed limestone or calcined bauxite is used as coarse aggregate, regardless of the compressive strength (Fig. 7). In the case of other aggregates, Eq. (2) tends to overestimate the moduli, though marginally, as compressive strength increases. ...
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Coarse Aggregate Properties
The mineral makeup of the aggregate also influences the modulus of elasticity of concrete. In a study by Aitcin and Mehta, they tested four different types of aggregates: diabase, limestone, gravel, and granite. Their test results showed that the limestone and diabase aggregates gave the highest values for the elastic modulus.
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Variations in the elastic modulus of limestone with …
Download scientific diagram | Variations in the elastic modulus of limestone with temperature. from publication: Mechanical property and thermal damage factor of limestone at high temperature ...
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Rock mass properties
Corkum, 2002). A related modification for estimating the deformation modulus of rock masses was made by Hoek and Diederichs (2006). This chapter presents the most recent version of the Hoek-Brown criterion in a form that has been found practical in the field and that appears to provide the most reliable set of
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BERDASARKAN HASIL UJI CBR LABORATORIUM DAN …
CBR value from Plaxis 2D with laboratory CBR test for crushed limestone material from Padalarang with the gradient poorly graded is 4,30%, while crushed limestone material from Sukabumi with the gradient well graded is 2,36%. Keywords: crushed limestone, modulus of elasticity, modulus of subgrade, CBR
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Engineering Properties of Soil and Rock
(PMT), or Dilatometer (DMT) should be considered for evaluating the elastic modulus of the soil strata. Typical elastic modulus values of predominately granular materials are shown in Table 3. Table 3: Typical elastic modulus values for granular s oil (modified after Sabatini, 2002) . soil type range of equivalent elastic modulus ksf / (kPa)
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(PDF) ELASTIC PROPERTIES OF ROCKS
As shown in Table 1, values of Young's modulus of the stone masonry walls (as a whole) range between 1.6 GPa and 3 GPa, while Young's modulus of the involved stone ranges at least from 5-10 GPa ...
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Physical and mechanical properties of crushed …
The mechanical properties, including cubic and axial compressive strengths, modulus of elasticity, splitting tensile strength, and flexural strength and toughness of the SFRMC, were analyzed,...
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Effect of limestone and granite coarse aggregate on
method, elastic modulus determined using this method cannot be related directly to the ... coarse aggregate was crushed politic limestone (source: Sitkówka-Nowiny, Świętokrzyskie
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Static and Dynamic Elastic Moduli of Limestone: Comparison of …
Static and Dynamic Elastic Moduli of Limestone: Comparison of Results By M.P. Figueiredo, J.C.R. Justen, G.F. Vazques, M.J. Morschbacher Book Rock Mechanics for Natural Resources and Infrastructure Development - Full Papers
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Modulus of Elasticity and Strength | PPT
• For granites and limestone the modulus of elasticity in compression is in the range 2,000,000 – 7,000,000 psi. • Sandstone has lower value modulus, which may range from 1,000,000 – 5,000,000 psi. ... (sometimes just referred to as "fines"). Defined as natural or crushed sand passing the No. 10 sieve and mineral particles passing the ...
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Uniaxial compressive strength ( c) and deformation modulus …
Limestone 107 47 441 81 74 71 961 25 Marble 133 63 474 20 66 71 1074 4 Greenschist - - - - 93 44 472 3 Clay schist / -stone 68 38 563 2 40 21 537 6 ... E-modulus and the factor m i in the …
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Relationship between compressive strength and modulus of …
Modulus of elasticity of concrete is a key factor for estimating the deformation of structural elements, as well as a fundamental factor for determining modu- ... greater than 1, includes crushed limestone and cal-cined bauxite; and the third group, which requires correction factors smaller than 1, includes crushed ...
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Study the mechanical and physical properties of sand …
The results show that introducing crushed limestone sand improves all of the qualities studied significantly. ... a low elastic modulus of 21315 MPa and a moderate shrinkage of 426μm/m after 28 ...
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