摘要

In order to investigate the geologic diagenesis of mud cake to agglomerated cake (MTA) at cement-formation interface, the analysis and testing technology such as X-ray diffraction (XRD), thermogravimetric analysis (TG), scanning electron microscope &EDX (SEM &EDX) and X-ray fluorescence (XRF) were used to study the association of MTA and diagenetic reaction of tuff volcanic process. The results show that, the effect of mud cake modifier in the MTA diagenetic reaction is similar to that of pyroclastic material in the tuff diagenetic reaction, and the phases and chemical compositions are basically consistent. The forming agent of agglomerated cake is similar to the fluid of diagenetic reaction of tuff volcanic process, so the velocity of diagenetic reaction can be accelerated and the reaction products can be controlled, too. The characteristic diagenetic phenomenon and reaction products of the two are similar, and the crystallization phenomenon of FeS2occurred in both, which is a kind of rubbish mineral. The silicon content and aluminum content in the agglomerated cake decreased while the calcium content increased with time. The curing reaction process of MTA is consistent with alkali-activated pozzolanic materials chemical reaction model, in which the chemical reaction model is dealuminization, junction silicon and calcium absorption.

  • 出版日期2011-4

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