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Crust-Mantle Structure and Coupling Effects on Mineralization : An Example from Jiaodong Gold Ore Deposits Concentrating Area, China 被引量:17
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作者 YangLiqiang DengJun +2 位作者 ZhangZhongjie WangGuangjie WangJianping 《Journal of China University of Geosciences》 SCIE CSCD 2003年第1期42-51,共10页
Based on the results of two dimension velo city structure, 1∶100 000 aeromagnetic anomaly, 1∶200 000 bouguer gravity anom aly and seismic anisotropy of Jiaodong and neighboring region in Shandong, China , the info... Based on the results of two dimension velo city structure, 1∶100 000 aeromagnetic anomaly, 1∶200 000 bouguer gravity anom aly and seismic anisotropy of Jiaodong and neighboring region in Shandong, China , the information of geophysical field was divided into two parts: deep and sh allow focus fields. And then, the information of two different fields was c ombined with that of deep seated geology and ore deposit features. The syntheti c result was adopted to analyze three dimension structure, to probe into crust mantle coupling effects of mineralization and dynamics of ore formation system . 展开更多
关键词 geophysical field crust mantle structure coupling effect dynamics of mineralization Jiaodong area of China.
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Dynamic Rheological Behavior of Low Water-to-binder Ratio Mortars under Large Amplitude Oscillatory Shear(LAOS)
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作者 何真 JIANG Rui LI Yang 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2018年第3期608-618,共11页
This work focuses on the dynamic rheological behavior of low water-to-binder ratio cement mortars blended with fly ash microspheres(FAM) or silica fume(SF). The initial slump flow of each group has been controlled... This work focuses on the dynamic rheological behavior of low water-to-binder ratio cement mortars blended with fly ash microspheres(FAM) or silica fume(SF). The initial slump flow of each group has been controlled at similar values by adjusting the superplasticizer dosages. With the help of a coaxial cylinder rheometer, the dynamic rheological behaviors of these mortars are investigated by frequency sweeping in the range of 0-2 Hz under large amplitude oscillatory shear(LAOS). Based on the systematical elaboration of dynamic rheological testing theory, the experimental data are processed according to Lissajous plot fitting to reveal the viscoelastic characteristics. The nonlinearity of response signals is further assessed with Fourier transform(FT) analysis. The parameters, storage modulus G', loss modulus G" and relative amplitude I3/I1 are proposed to clarify the influences of FAM and SF on the stability and energy consumption of local structures and nonlinearity of response torques. The hydration characteristics of various groups well confirmed the rheological phenomenon. This study is beneficial for the preparation and optimization of flow state concrete such as pumping concrete and self-compacting concrete. 展开更多
关键词 dynamic rheology viscoelastic behavior LAOS mortar mineral admixture Lissajous plots Fourier transform
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