inefficient cementing by calcite. Instead, the presence of hard bands, shaly limestone, increased . 145 . significantly the durability. The strength of fine-grained argillaceous rocks is found inversely related to . 146 . the total percentage of clay minerals (Gökçeoglu et al. 2000; Ward et al. 2005) while the presence of . 147
WhatsApp: +86 182217550731] Results are reported for an acidic water flow-through experiment conducted in a fractured argillaceous limestone sample (73% carbonates). The change in fracture geometry and related parameters ...
WhatsApp: +86 18221755073The argillaceous partings, the darker gray limestone, on the other hand contain carbonates (66%) consisting of calcite (51%) and dolomite (16%) and quartz (22%), with a clay content of 2.4% (Illite, Kaolinite, and a trace of Montmorillonite). The porosity (n) of the Cobourg Limestone exhibits variability consistent with the heterogeneity of the ...
WhatsApp: +86 18221755073In studying the effect of triaxial pressure on the permeability of argillaceous limestone (Selvadurai and Gowacki, 2017; Selvadurai and Najari, 2015), the …
WhatsApp: +86 18221755073To study the differences in mechanical properties and failure characteristics of underground chambers surrounding rock under different stress conditions, triaxial loading and unloading tests were ...
WhatsApp: +86 18221755073The paper presents the results of experiments that were conducted to determine the influence of a triaxial stress state on the evolution of the permeability of an argillaceous limestone.
WhatsApp: +86 18221755073These Omani limestone "marbles" occur in a large number of places as "exotic blocks" within the allochthonous Hawasina formation and are thought to …
WhatsApp: +86 18221755073The corresponding stress value is 4.36 MPa, which means that the long-term strength of argillaceous salt rock is 4.36 MPa. 3.2. Inflexion point method of steady creep rate. It is known from Fig. 4 that the creep rate of argillaceous salt rock decreases gradually when the applied load level is not high. At this stage, the creep curve is close …
WhatsApp: +86 18221755073The strength of fine-grained argillaceous rocks is found inversely related to the total percentage of clay minerals (Gökçeoglu et al. 2000; Ward et al. 2005) while the presence of
WhatsApp: +86 18221755073The mechanical strength of carbonate rocks such as limestone is predominantly governed by five parameters: porosity, cleavage properties, crystal size, lithification and
WhatsApp: +86 18221755073These rocks are used extensively as ornamental stone tiles and slabs in the Oman building industry and is also exported to nearby countries. Omani exotic limestone marble has a …
WhatsApp: +86 18221755073The paper presents the results of experiments that were conducted to determine the influence of a triaxial stress state on the evolution of the permeability of an argillaceous limestone. The limestone rock is found in the Ordovician rock formations above the Precambrian basement located in southern Ontario, Canada, which is being …
WhatsApp: +86 18221755073The physical and mechanical properties of an argillaceous limestone. This thesis presents the work undertaken to characterize the mechanical, physical and fabric characteristics of the argillaceous Lindsay-Cobourg Limestone (LCL), which is a candidate host rock for the construction of a Deep Ground Repository (DGR) for storing low and intermediate level …
WhatsApp: +86 182217550731 School of Resources and Civil Engineering, Northeastern University, Shenyang, China; 2 Research Institute of Petroleum Engineering Technology, Shengli Oilfield Branch Company SINOPEC, Dongying, …
WhatsApp: +86 18221755073Laminar argillaceous limestone continental shale is an important oil reservoir in Jiyang Depression, Bohai Bay Basin of China. Affected by the laminar structure, the spatial propagation morphology ...
WhatsApp: +86 18221755073Results are reported for an acidic water flow‐through experiment conducted in a fractured argillaceous limestone sample (73% carbonates). The change in fracture geometry and related parameters is reported for six data sets obtained from synchrotron X‐ray microtomography experiments. High‐resolution three‐dimensional images of the …
WhatsApp: +86 18221755073DOI: 10.1016/j.ijrmms.2021.104953 Corpus ID: 245582253; On the mechanical anisotropy of argillaceous Cobourg limestone: fabric tensor approach @article{Pietruszczak2022OnTM, title={On the mechanical anisotropy of argillaceous Cobourg limestone: fabric tensor approach}, author={S Pietruszczak and P. Pakdel}, …
WhatsApp: +86 18221755073The variations in compression strength σ 0, peak strain ε 0, elasticity modulus E a, and secant modulus E 50 of the argillaceous limestone specimens after the wetting-drying cycle under uniaxial compression are shown in Figure 7, and the detailed values are listed in Table 2, in which the peak strain indicates the axial strain under a …
WhatsApp: +86 18221755073lus of limestone, granite (Heins and Friz 1967), and initial tangentmoduliofBereasandstone,Indianalimestoneand ... Argillaceous siltstone,Frozen strength,Initial saturation degree,NMR test,Phase composition of pore water,Microscopic mechanisms Created Date:
WhatsApp: +86 18221755073In present study, the feasibility of applying a natural adsorbent with Fe 3+ modification (Fe 3+-modified argillaceous limestone, FAL) on the competitive adsorption of heavy metals (i.e., Cd 2+, Pb 2+ and Ni 2+) was evaluated.The current results revealed an efficient adsorption on Cd 2+, Pb 2+ and Ni 2+ in mono-metal system. Further …
WhatsApp: +86 18221755073DOI: 10.1016/j.envpol.2019.07.106 Corpus ID: 199549050; Spectroscopic investigation of Cu2+, Pb2+ and Cd2+ adsorption behaviors by chitosan-coated argillaceous limestone: Competition and mechanisms.
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WhatsApp: +86 18221755073DOI: 10.1016/j.scitotenv.2018.04.300 Corpus ID: 13666878; Competitive adsorption of Cd2+, Pb2+ and Ni2+ onto Fe3+-modified argillaceous limestone: Influence of pH, ionic strength and natural organic matters.
WhatsApp: +86 18221755073The research on engineering geological characteristics of coral reef limestone has become a significant and urgent need in the region of "One Belt and One Road" and the "maritime silk road". By comparing the physical and mechanical characteristics of coral reef limestone from the South China Sea, the Red Sea, the Caribbean Sea, Southeast Asia, the Indian …
WhatsApp: +86 18221755073These rocks, deposited during the Tertiary Period, have two main components: the dominant carbonate matrix and the argillaceous fraction. The former is mainly a relatively homogeneous micritic limestone (host rock, as shown in Figs. 2a and 3), while the latter is present in the form of thin soft interlayers inside the rock. Polarizing ...
WhatsApp: +86 18221755073Compressive strength of Portland-limestone cement pastes with various limestone particle size: (a) 5 m, (b) 10 m and (c) 20 m. …
WhatsApp: +86 18221755073Introduction. The Cobourg limestone is a sedimentary rock formation in Ontario dating back to Ordovician period. The rock has a distinct heterogeneous fabric consisting of a fine-grained light gray nodular fraction composed of carbonates separated by a darker limestone containing the clay minerals, the latter referred to as argillaceous …
WhatsApp: +86 18221755073Figure 1. (a) Cobourg Limestone layout with boundary between the two microtexture phases: (1) the main calcite phase and (2) the argillaceous phase. (b) Close-up of the microtexture boundary of Figure 1a. (c) Matrix layout of the argillac-eous area. (d) Well-developed microporosity network in the argillaceous part.
WhatsApp: +86 18221755073Cretaceous limestone of Oman are affected by br ittle deformation, which has resulted in faults and fractures, j oints, and contain discontinuities associated with bed ding.
WhatsApp: +86 18221755073Argillaceous rocks can display a wide range of durability behavior after excavation and in cut slopes. In this paper, we propose a classification of argillaceous …
WhatsApp: +86 18221755073ground repositories in argillaceous rock formations, has prompted Canadian agencies to consider the argillaceous limestone in southern Ontario as a possible setting for the construction of a deep geologic repository (DGR) for the disposal of non-heat-emitting low- and intermediate-level nuclear waste. The rationale for the choice of an argilla-
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WhatsApp: +86 182217550732.2. Modification of Argillaceous Limestone. The modification process for argillaceous limestone (AL) was carried out following the previous study of Sarı et al. (2012) . The synthesis pathway of modifying argillaceous limestone with Mn 3 O 4 is shown in Figure 1 a. Detailed synthesis steps are as follows: 20 g AL was activated with …
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