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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 24 May 2022
Lithosphere (2022) 2022 (Special 12): 9359914.
... and alkaline-surfactant-polymer (ASP) flooding are two of the most used combination flooding techniques. According to the findings, alkaline lowers the oil-water interfacial tension and reduces the other component’s adsorption. Nevertheless, alkaline also has negative effects like scaling and cost increasing...
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Journal Article
Published: 26 April 2022
Bulletin of the Seismological Society of America (2022) 112 (4): 1894–1907.
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Journal Article
Published: 01 February 2021
Earthquake Spectra (2021) 37 (1): 324–345.
...-tensioned cross-laminated timber rocking walls. A suite of 22 far-field ground motions were used for nonlinear time history (NLTH) analysis. Truncated incremental dynamic analysis was used to scale the ground motions, and results of the NLTH analyses were used to develop cumulative distribution functions...
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Journal Article
Published: 01 February 2021
Earthquake Spectra (2021) 37 (1): 235–261.
... by the ABAQUS model, yielding of reinforcement in tension at one end of the building, shear damage around wall openings, and the coupling effect of slabs that increased resistance but reduced drift capacity. It is important to note that the difference between peak overturning moments predicted by these two...
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Journal Article
Journal: GSA Bulletin
Published: 28 October 2020
GSA Bulletin (2021) 133 (5-6): 1157–1166.
... the earthquake. Field surveys revealed that the coseismic surface ruptures were characterized by left-lateral offset, en echelon tensional cracks, mole tracks within a narrow zone, and large areas of sand liquefaction that increased the damage and losses. We measured the coseismic displacements along surface...
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Series: Engineering Geology Special Publications
Published: 09 June 2020
DOI: 10.1144/EGSP29.17
EISBN: 9781786204653
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Journal Article
Journal: Geology
Published: 29 May 2020
Geology (2020) 48 (9): 898–902.
... source pressure ( P o ) to drive host-rock failure, but without tectonic stress. Here we present axisymmetric finite-element simulations of radially propagating sills for a range of tectonic stress (σ r ) conditions, from horizontal tension (σ r < 0) to horizontal compression (0 < σ r ). Response...
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Journal Article
Published: 27 May 2020
Environmental & Engineering Geoscience (2020) 26 (2): 243–256.
... that of other locations after the experiment. The post feet were inwardly bent due to the medial tensions from the upper support cables and the longitudinal cables ( Figure 6a ). After the experiment, the elongation of brake ring 8 reached approximately 0.60 m, the elongation of brake ring 10 was approximately...
Series: AAPG Memoir
Published: 31 January 2020
DOI: 10.1306/13672214M1213824
EISBN: 9781629812847
... scanning, the samples were unjacketed, and one of the facing shear band facets was scanned using a Nanovea ® ST400 White Light Profilometer with 5 μ m resolution. Indirect Tension (Brazilian) Tests Four disks of Mancos Shale, measuring 2.54 cm (1 in) in diameter and 1.27 cm (0.5 in) in thickness...
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Journal Article
Published: 02 October 2019
Geological Magazine (2019) 156 (12): 2113–2116.
... of the pressure wave propagation (compression) is numerically equal to the strain in the plane of the wave front (tension). The origin of the rock markings described here from Dong Men Yu Island in Fujian Province is thus identified as compressive and tensile stresses occasioned to granite blocks through...
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Series: GSA Special Papers
Published: 14 June 2019
DOI: 10.1130/2018.2541(11)
EISBN: 9780813795416
... and the following time of rapid subsidence reflecting a decrease in such stresses or an increase in tensional stresses. Conversely, the longer intervals of tectonic quiescence would reflect relatively stable, horizontal stress fields. The episodic changes in stress fields affecting the Canadian High Arctic...
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Journal Article
Published: 01 May 2019
Earthquake Spectra (2019) 35 (2): 1023–1043.
... mm). The main steel properties were derived from uniaxial tension tests ( SIA 1989 ) and are reported in Table 3 ; it is noted that, differently from the hot-rolled steel used for the longitudinal reinforcement, the cold-formed transverse steel did not present any yield plateau. The test results...
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Journal Article
Journal: Interpretation
Published: 10 January 2019
Interpretation (2019) 7 (1): T179–T193.
...) Thickness (mm) Failure force (N) Tension strength (MPa) Mean tension strength (MPa) Core-1 1-1-1 90 24.21 7.81 2711 9.13 9.195 1-1-2 90 23.82 7.71 2669 9.26 – 1-2-1 45 24.47 6.96 2112 7.90 9.73 1-2-2 45 24.68 7.39 3309 11.56 – 1-3-1 0 24.81 6.99 618 2.27...
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Series: Special Publication
Publisher: SEPM (Society for Sedimentary Geology)
Published: 01 January 2019
DOI: 10.2110/sepmsp.112.14
EISBN: 9781565763654
... pressure, γ = surface tension of Hg, Θ = contact angle of mercury in air, and r = radius of pore aperture for a cylindrical pore. MICP distributions were plotted using the change in mercury vapor saturation divided by the change in the log of the pore-throat radius (dSv/d log r). Thin-section image...
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Journal Article
Journal: Economic Geology
Published: 01 September 2018
Economic Geology (2018) 113 (6): 1359–1382.
..., which constitutes a resource of 28 t Au, is hosted in 20 NW-trending, syntaxial, layered quartz veins and tension gashes within almost coeval trachyandesites and andesitic breccias that overlie the Sandaowanzi monzogranite. Alteration halos are developed around the quartz veins and tension gashes...
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Journal Article
Published: 01 August 2018
Earthquake Spectra (2018) 34 (3): 1289–1309.
... of the material and accounts for bar buckling and bar rupture due to low-cycle fatigue. The material model can be fully calibrated if the stress-strain curve in monotonic tension, shown in Figure 2b , is known. The constitutive model includes a hysteretic law to capture the cyclic response of reinforcing steel...
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Journal Article
Published: 01 August 2018
Earthquake Spectra (2018) 34 (3): 1267–1288.
... specimens were restrained against rotation, simulating fixed-fixed end conditions. Three phases were considered during the experimental program. The first testing phase involved controlled load paths where the specimens were subjected to axial tension/compression cycles combined with lateral displacements...
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Journal Article
Published: 01 May 2018
Earthquake Spectra (2018) 34 (2): 867–891.
... components. The strain at vertical bar yielding is assumed to be 0.002. δ gap ( ε cell ) corresponds to the compression-only gap. Thus when the unit cell is under tension, K T = K s , whereas under compression, K T = K s + K c . This implies that tensile resistance...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP455.4
EISBN: 9781786203366
...-fidelity structural models of the wing spar. The bending strength of the wing spar of a 6 m wingspan ornithocheirid pterosaur is used to infer the likely membrane tension. The tensions required to suppress aeroelastic flutter and to minimize ballooning of the membrane under flight loads are also estimated...
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Journal Article
Published: 01 May 2016
Environmental & Engineering Geoscience (2016) 22 (2): 131–139.
... fractures were extended. The proposed two-part, primarily post-event, fracture mapping and analysis of intensity data are designed to test the static, as opposed to vibratory, cause of wall fractures, assuming: (1) tension fractures form perpendicular to the principal tensile stress (σ 3 ) direction; (2...
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