Results 71 to 80 of about 371,424 (328)

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

open access: yesDeep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang   +4 more
wiley   +1 more source

Experimental Study on the Mechanical Properties of Deep Granite under Gradient-Confining Pressure

open access: yesApplied Sciences
In deep layers, the complex geological environment is characterized by high temperature and high stress which causes marked differences in the mechanical properties of granite compared to those of granite in shallow areas.
Shaolong Qin   +4 more
doaj   +1 more source

New Hampshire A Great Place To Live 7/13/2011 [PDF]

open access: yes, 2011
Granite Staters say that the State of New Hampshire is an excellent place to live, and give high ratings to the public safety and the environment.
Survey Center, UNH
core   +1 more source

Critical expansion points: Mechanical signs of surrounding rock instability

open access: yesDeep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen   +4 more
wiley   +1 more source

Modulus of Elasticity of Concretes from Polish and Ukrainian Crushed Aggregates from Igneous Rocks

open access: yesBudownictwo i Architektura, 2014
Test results concern modulus of elasticity and compressive strength of ordinary concretes made of various coarse aggregates from igneous rocks. Test results of some properties of these aggregates (3 crushed granites, 3 basalts, granodiorite, natural ...
Waldemar Budzyński   +3 more
doaj   +1 more source

Lynch Heads Into Final Year With High Approval Ratings, Concerns About Economy Remain 2/6/2012 [PDF]

open access: yes, 2012
Entering his last year in office, New Hampshire Governor John Lynch’s job approval rating remains very high. Economic problems continue to be the top concerns for Granite Staters, but have moderated somewhat in recent ...
Survey Center, UNH
core   +1 more source

Performance of Concrete with Waste Granite Powder: The Effect of Superplasticizers

open access: yesApplied Sciences, 2018
Granite stone is highly demanded by construction sector. In the processing stage, great amounts of waste powder are produced that can be used as cement replacement in concrete production.
Elyas Asadi Shamsabadi   +3 more
semanticscholar   +1 more source

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao   +3 more
wiley   +1 more source

Epoxy Granite Properties using Indian Origin Granite

open access: yesInternational Journal of Engineering and Advanced Technology, 2020
Precision machine tools are expected to operate at higher machine speed to produce precise products. Hence, its structures must have high structural stiffness and high damping along with dimensional and geometrical stability. Granite is the material used for metrological and precision machine manufacturing applications.
Kailas V. Gurav, V. M. Kale, Akash Sah
openaire   +1 more source

Granitic rocks and metasediments in Archean crust, Rainy Lake area, Ontario: ND isotope evidence for mantle-like SM/ND sources [PDF]

open access: yes
Granitoids, felsic volcanic rocks and clastic metasediments are typical rocks in Archean granite-greenstone belts that could have formed from preexisting continentasl crust.
Hanson, G. N., Shirey, S. B.
core   +1 more source

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