000101624 001__ 101624
000101624 005__ 20230519145427.0
000101624 0247_ $$2doi$$a10.1016/j.fuel.2021.120408
000101624 0248_ $$2sideral$$a123962
000101624 037__ $$aART-2021-123962
000101624 041__ $$aeng
000101624 100__ $$aRen, Q.
000101624 245__ $$aRoles of moisture and cyclic loading in microstructures and their effects on mechanical properties for typical Chinese bituminous coals
000101624 260__ $$c2021
000101624 5060_ $$aAccess copy available to the general public$$fUnrestricted
000101624 5203_ $$aThis work aimed at studying the roles of moisture and cyclic loading in microstructures and their effects on mechanical properties for typical Chinese bituminous coals. Different relative moisture contents (100%, 75%, 50%, 25%, and 0%) for Shenmu coal (SM), Hongshaquan coal (HSQ), and Wucaiwan coal (WCW) were chosen to study the effects of moisture. The raw SM was then further selected to investigate the effects of cyclic loading. Images of coals surfaces and mechanical properties during simulated crushing process were recorded and combined to be analyzed. The results showed that the moisture possessed significant effects on coal mechanical properties, which strongly depended on their porosities. As for low porosity coal (SM), the adsorption of moisture can soften and lubricate the microstructures, weakening mechanical properties. While the drying process would destroy the microstructures and decease mechanical properties for high porosity coals (HSQ and WCW). Under the cyclic loading process, the cumulative effects of strain showed a step-up state and the first cyclic loading can typically cause the biggest change of microstructures and produce the largest strain under different stress levels. Finally, a normalized quantitative relationship ([fórmula]) between the relative fractal dimension and relative stress was built.
000101624 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000101624 590__ $$a8.035$$b2021
000101624 592__ $$a1.514$$b2021
000101624 594__ $$a11.2$$b2021
000101624 591__ $$aENGINEERING, CHEMICAL$$b19 / 143 = 0.133$$c2021$$dQ1$$eT1
000101624 591__ $$aENERGY & FUELS$$b29 / 119 = 0.244$$c2021$$dQ1$$eT1
000101624 593__ $$aEnergy Engineering and Power Technology$$c2021$$dQ1
000101624 593__ $$aOrganic Chemistry$$c2021$$dQ1
000101624 593__ $$aChemical Engineering (miscellaneous)$$c2021$$dQ1
000101624 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000101624 700__ $$aZhang, Y.
000101624 700__ $$0(orcid)0000-0001-5473-6919$$aArauzo, I.$$uUniversidad de Zaragoza
000101624 700__ $$aShan, L.
000101624 700__ $$aXu, J.
000101624 700__ $$aWang, Y.
000101624 700__ $$aSu, S.
000101624 700__ $$aHu, S.
000101624 700__ $$aXiang, J.
000101624 7102_ $$15004$$2590$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Máquinas y Motores Térmi.
000101624 773__ $$g293 (2021), 120408 [8 pp]$$pFuel$$tFuel$$x0016-2361
000101624 8564_ $$s1020054$$uhttps://zaguan.unizar.es/record/101624/files/texto_completo.pdf$$yPostprint
000101624 8564_ $$s957449$$uhttps://zaguan.unizar.es/record/101624/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000101624 909CO $$ooai:zaguan.unizar.es:101624$$particulos$$pdriver
000101624 951__ $$a2023-05-18-14:14:00
000101624 980__ $$aARTICLE