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Accelerated Creep of Asphalt Concrete at Medium Temperatures

Applied Sciences
In this paper, the accelerated creep under uniaxial tension of hot fine-grained dense asphalt concrete at temperatures of 22–24 °C and stresses from 0.084 MPa to 0.596 MPa is experimentally investigated.
Alibay Iskakbayev, Bagdat Teltayev, Yerbol Aitbayev, Azamat Zhaisanbayev   +3 more
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Creep model of roadway surrounding rock considering hardening effect and damage effect. [PDF]

PLoS ONE
The influence of confining pressure on creep characteristics was analyzed by carrying out creep tests of rocks under different confining pressures. A new creep model of roadway surrounding rock considering the combined influence of hardening effect and ...
Hongmiao Lv
doaj   +2 more sources

A nonlinear creep model for surrounding rocks of tunnels based on kinetic energy theorem

Journal of Rock Mechanics and Geotechnical Engineering, 2023
The initiating condition for the accelerated creep of rocks has caused difficulty in analyzing the whole creep process. Moreover, the existing Nishihara model has evident shortcomings in describing the accelerated creep characteristics of the ...
Wenbo Liu, Hui Zhou, Shuguang Zhang, Shuai Jiang, Liu Yang   +4 more
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Long-term creep law and constitutive model of extremely soft coal rock subjected to single-stage load

Rock and Soil Mechanics, 2021
In order to study the long-term creep law of extremely soft coal rock, the uniaxial and triaxial creep tests of extremely soft coal rock subjected to single-stage loads were carried out by using the self-developed triaxial creep test system.
WANG Xing-kai, XIA Cai-chu, ZHU Zhe-ming, XIE Wen-bing , SONG Lei-bo, HAN Guan-sheng   +5 more
doaj   +1 more source

Study on the Creep of Damage-Containing Anthracite: Theory and Experiment

Applied Sciences, 2023
Fractal derivatives characterize the accelerated creep phase of the creep process. In this study, based on the fractal order theory, the integer-order derivatives are defined from the spatio-temporal self-similarity phenomenon of the dynamic process ...
Gang Li, Guochao Yan, Shaoqi Kong, Xuyang Bai, Chaofei Du, Jiajun Li, Jiawei Zhang   +6 more
doaj   +1 more source

Experimental Study of the Creep Disturbance Effect and Acoustic Emission Characteristics of Mudstone with Different Moisture Contents

Shock and Vibration, 2021
It is important to have a clear understanding of the creep characteristics of water-rich soft rocks under a dynamic load and the evolution of cracks because soft rock roadways in deep mines are very sensitive to disturbances, and instability and damage ...
Yongjiang Yu, Pengbo Wang, Shipeng Zhang, Jingjing Liu   +3 more
doaj   +1 more source

Improved creep resistance of 20Cr25NiNb heat resistant steels through grain boundary intermetallic precipitation strengthening

Journal of Materials Research and Technology, 2023
The creep performance of 20Cr25NiNb austenitic steel through the addition of W, Mo, and B elements was investigated. W and Mo enhanced high temperature creep resistance primarily through solid solution strengthening σss and precipitation strengthening σp
Ming Shu, Qin Zhou, Yuanhua Shen, Zhangjian Zhou, Pengfei Wang, Le Chen, Yongduo Sun, Jun Xiao   +7 more
doaj   +1 more source

Long‐term strength determination and nonlinear creep damage constitutive model of salt rock based on multistage creep test: Implications for underground natural gas storage in salt cavern

Energy Science & Engineering, 2020
Long‐term mechanical property is critical for underground energy storage in a salt cavern. Multistage loading has been widely used in creep tests to save test time and cost.
Fei Wu, Renbo Gao, Quanle Zou, Jie Chen, Wei Liu, Kang Peng   +5 more
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Accelerated creep model for rock based on statistical damage principle

Yantu gongcheng xuebao, 2020
Aiming at the problems that the existing creep theoretical models cannot describe the accelerated creep characteristics of the viscoplastic phase of rock and how to determine the start conditions of its accelerated creep phase, the triaxial creep tests ...
LIU Wen-bo 1, 3, ZHANG Shu-guang 1, 2, CHEN Lei 3, SUN Bo-yi 3, LU Ping-ping 3
doaj   +1 more source

Shear creep mechanical properties and damage model of mudstone in open-pit coal mine

Scientific Reports, 2022
Clarifying the shear creep characteristics of rock and scientifically analyzing its creep deformation law is the key to solving the problem of safe construction and long-term stability analysis of the open-pit coal slope rock mass. Shear creep tests were
Guanghe Li, Yanting Wang, Yiming Hu, Dong Wang, Xiaoxu Yang, Yanfei Li, Zhiwei Zhou, Shipeng Zhang   +7 more
doaj   +1 more source