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Title:Stress-dilatancy behavior of sand incorporating particle breakage
Authors:ID Yu, Fangwei (Author)
ID Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Copyright holder)
Files:.pdf Acta_Geotechnica_Slovenica_2017_Yu_Stress-dilatancy_behavior_of_sand_incorporating_particle_breakage.pdf (1,43 MB)
MD5: 1ABF278B084A52975895D3D8B4EF744A
PID: 20.500.12556/dkum/b393d999-5284-4201-ae2b-01147d782d30
 
URL http://fgserver3.fg.um.si/journal-ags/2017-1/article-5.asp
 
Language:English
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:This paper presents the stress-dilatancy behavior of sand incorporating particle breakage. A series of the drained triaxial tests were conducted on the Silica sand No.5 and the pre-crushed sands that were produced by several drained triaxial tests on Silica sand No.5 under 3MPa confining pressure in simulating the high-pressure shear process to result in particle breakage, to investigate the stress-dilatancy behavior of sand incorporating particle breakage. For a given initial void ratio, particle breakage was found to result in deterioration of the stress-dilatancy behavior in the impairment of the dilatancy of sand to become more contractive with a reduction in the maximum dilatancy angle and the excess friction angle (the difference between the peak-state friction angle and the critical-state friction angle). By introducing the concept of the skeleton void ratio in considering particle breakage, a linear stress-dilatancy relationship between the maximum dilatancy angle-over-the excess friction angle and peak-state skeleton void ratio was proposed in semi-logarithmic plane and popularized to the mobilized stress-stain state as a stress-dilatancy equation pertaining to particle breakage, which would be useful in assessing the evolution of the stress-dilatancy behavior of sand during particle breakage.
Keywords:dilatancy angle, friction angle, particle breakage, sand, triaxial tests
Publication status:Published
Publication version:Version of Record
Year of publishing:2017
Number of pages:str. 55-61
Numbering:Letn. 14, št. 1
PID:20.500.12556/DKUM-70886 New window
ISSN:1854-0171
ISSN on article:1854-0171
COBISS.SI-ID:302984704 New window
NUK URN:URN:SI:UM:DK:HIFHTFI0
Copyright:Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru
Publication date in DKUM:18.06.2018
Views:1706
Downloads:119
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
YU, Fangwei, 2017, Stress-dilatancy behavior of sand incorporating particle breakage. Acta geotechnica Slovenica [online]. 2017. Vol. 14, no. 1, p. 55–61. [Accessed 1 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=70886
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Record is a part of a journal

Title:Acta geotechnica Slovenica
Shortened title:Acta geotech. Slov.
Publisher:Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru
ISSN:1854-0171
COBISS.SI-ID:215987712 New window

Secondary language

Language:Slovenian
Title:Reološke lastnosti morskih sedimentov iz Luke Koper
Abstract:V članku je predstavljeno napetostno odvisno razmikanje peska z upoštevanjem drobljenja zrn. Za ta namen je bil izveden niz dreniranih triosnih preizkusov na kremenovem pesku številka 5 in predhodno zdrobljenih peskih, ki so bili pridobljeni z več dreniranimi triosnimi preizkusi na kremenovem pesku številka 5 pri 3 MPa bočnega tlaka, s čimer je ponazorjeno striženje peska pri visokih tlakih, to pa ima za posledico drobljenje delcev. Za podani začetni količnik por je bilo ugotovljeno, da ima drobljenje delcev za posledico zmanjšanje napetostno odvisnega razmikanja peska, kar se kaže bodisi kot kontrakcijsko obnašanje ali kot zmanjšanje maksimalne vrednosti kota razmikanja in s tem zmanjšanje dodatnega strižnega kota (razlika med vrhunsko vrednostjo strižnega kota ter strižnim kotom pri kritičnem stanju). Z uvedbo koncepta količnika por skeleta pri obravnavanju drobljenja zrn je predlagan linearen odnos za napetostno odvisno razmikanje v obliki zveze med maksimalnim kotom razmikanja, dodatnim strižnim kotom in vrhnjo vrednostjo količnika por skeleta v pol-logarimični ravnini. Ta zveza je nato razširjena na mobilizirano napetostno-deformacijsko stanje. Dobljena enačba napetostno odvisnega razmikanja, ki vključuje drobljenje zrn, je uporabna za oceno vpliva drobljenja zrn na napetostno odvisno razmikanje peska.
Keywords:morski sedimenti, Bingham-ov model, napetost na meji tečenja, plastična viskoznost, koaksialni valjasti reometri, mrtvi tok, Koprski zaliv


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  1. Acta geotechnica Slovenica

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