Showing 141 - 160 results of 310 for search '"limestone"', query time: 0.06s Refine Results
  1. 141

    Groundwater-Mixing Mechanism in a Multiaquifer System Based on Isotopic Tracing Theory: A Case Study in a Coal Mine District, China by Pinghua Huang, Xinyi Wang

    Published 2018-01-01
    “…However, δ13C increases with the rise in CO32− + HCO3− in the Cambrian limestone groundwater, and this condition indicates that organic matters produce methane due to methanogens.…”
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  2. 142

    Physicochemical characterization of soil occupied by carob tree (Ceratonia siliqua L.) in Morocco by Ismail E ttaleb, Jalila Aoujdad

    Published 2025-01-01
    “…However, in all the stations, soil is considered low in available phosphorus. Total limestone contents are higher in different stations. …”
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  3. 143

    Altitude, geological substrate, and dynamics of Natura 2000 habitat types in Cretan low-vegetation pastures by Frederic Bendali, Michel Godron

    Published 2024-10-01
    “…HT 4090 and 5430 are also characterized by calcareous geological substrates, namely hard limestone and marble. We suggest that HT 5420 is the most post-cultural vegetation and HT 5430 is a long-term pasture on noncultivable substrates.…”
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  4. 144

    Prediction of the pull-out strength of chemical anchors in natural stone by L. Contrafatto, R. Cosenza

    Published 2014-07-01
    “…The applicability of some numerical models for the prediction of the failure mechanism and of the bearing capacity of post-installed threaded rods chemically anchored in basalt, sandstone and limestone is investigated, as well as the reliability of theoretical formulations conceived for concrete. …”
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  5. 145

    Properties enhancement of asphalt mortar incorporating phosphogypsum based on surface activation by Wei Guo, Kaipeng Gu, Haiyang Xu, Yingsong Li, Wei Tian

    Published 2025-07-01
    “…To broaden the utilization of Phosphogypsum (PG), this paper involves the deployment of a silane coupling agent (SCA) to enhance the surface reactivity of PG, thereby evaluating its potential to serve as a viable alternative to traditional limestone filler within asphalt mortar compositions. …”
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  6. 146

    Development and evaluation of low-pH concrete plugs suitable for high-level radioactive waste repositories by Seokgu Gang, Daewon Lee, Jin-Seop Kim, Youngjin Shin, Jongwon Jung

    Published 2025-07-01
    “…In this study, low-pH concrete mixtures suitable for use as plugs in high-level radioactive waste disposal sites were evaluated by designing thirteen mixtures with various ratios of binders, including silica fume, fly ash, and blast furnace slag, and fillers, such as limestone and quartz. Three mixture designs that satisfied both the compressive strength requirement (>50 MPa) and leachate pH criterion (<11) after 28 d of curing were selected for further investigation. …”
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  7. 147

    Study on the side friction resistance capacity of prefabricated pipe piles in coral reef strata by Hong Zhang, Ran Gao, Ran Gao, Huiwu Luo, Peishuai Chen, Haifeng Liu

    Published 2025-01-01
    “…The interfacial shear behavior of the coral sand is similar to that of the crushed coral reef limestone, both of which experience ideal elastic-plastic changes, with an interfacial friction angle of approximately 35°. …”
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  8. 148

    Study of Interface Adhesion Between Polyurethane and Aggregate Based on Surface Free Energy Theory and Molecular Dynamics Simulation by Zengping Zhang, Jiajun Ji, Xue Li, Zhongbao Shi, Junjie Wang

    Published 2025-01-01
    “…The results showed that the adhesion between PU and basalt is consistently better than that with limestone, although the adhesion between PU and aggregate decreased under acidic conditions. …”
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  9. 149

    Adhesion of Nano-ZnO Modified Asphalt and Its Influence on Moisture-Sensitive Properties of Mixtures by Xiaoming Chen, Ping Wen, Qibin Ji, Shujiang Jiang, Zhimin Zhou, Aipeng Wang, Lingyun Li, Bowen Guan

    Published 2023-01-01
    “…Within the study context, the adhesion characteristics of asphalt mixtures with different nano-ZnO to limestone, basalt, and granite contents are studied using a boiling test. …”
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  10. 150

    Quais et ouvrages portuaires romains de Rouen/Rotomagus (Seine-Maritime) by Marie-Clotilde Lequoy

    Published 2020-12-01
    “…They were then wedged with a compact limestone fill, topped with medium to large limestone blocks and sealed with clay. …”
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  11. 151

    CONTROL ALGORITMS OF BOF MELTING WITH CONSIDERING THE INFLUENCE OF UNCONTROLLED DISTURBANCE by V. S. Bogushevsky, O. E. Skachok

    Published 2016-12-01
    “…You also find numerical values of impact impurity of scrap, falling mixer slag with cast iron, limestone instead of lime and water from cooled elements on decarbonization, bathtub temperature and slag basicity. …”
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  12. 152

    Study of the mechanical properties of mortars based on organic binders used in the reproduction of outdoor artworks by Alba Cerezo, Xavier Mas-Barber, Stéphane Kröner

    Published 2014-09-01
    “…The specimens were prepared from two commonly used organic binders in the scope of Culture Heritage Conservation/ Restoration, natural aggregates of crushed Tosca Rocafort limestone and three different additives. All the mortar specimens prepared were subjected to accelerated aging tests with UV irradiation, and then subjected to a 2kn tensile tester Deben microtest and SEM, in order to quantify the resistance and cracking stress.…”
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  13. 153

    Le lieu-dit des « Trois-Piliers » : un ensemble à caractère monumental du iiie s. apr. J.-C. dans la périphérie nord-est de Reims/Durocortorum ? by Philippe Rollet, Émilie Jouhet

    Published 2022-11-01
    “…The cladding is composed of small, very neat units, mounted in opus vittatum, with calibrated pyramidal shaped fragments of limestone. And while the cladding courses are perfectly horizontal, the internal blocking is composed of small limestone fragments, bound with a tile mortar. …”
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  14. 154
  15. 155

    Investigation of Ecological and Economical Characteristics of Systems of Gas Outburst Cleaning from Dioxide Sulphur by V. P. Bubnov, D. A. Dovnar

    Published 2013-02-01
    “…The paper presents the ecological and economical characteristics of different ways for purifying of waste gases from sulfurous anhydride (SO2).And proved that the least expenditures for purification of 1000 m3 have: lime and limestone, but also electron beam Methods. But, electron beam Method allow at the same time to carry out the purification of smoke gases from SO2 and NOх.…”
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  16. 156
  17. 157

    L’aqueduc du Gier : étude des ponts-siphons du Garon à Brignais et Chaponost (Rhône) et de Beaunant à Sainte-Foy-lès-Lyon (Métropole de Lyon) by Kilian Blanc, Laurie Danielou

    Published 2023-12-01
    “…The second is imported limestone. The use of limestone is increasingly common in the Gier aqueduct near Lyon.In conclusion, the joint study of construction and materials led to new observations and new ideas about the construction technique employed on the Gier aqueduct and the materials used.…”
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  18. 158

    Compressibility characteristics and modification effect of coal reservoirs in Longtan Formation, Nanchuan area, southeast Chongqing by Jinxian LIU, Tao GUO, Yatong ZHOU, Dongyang LI, Xiaobo JIN

    Published 2025-01-01
    “…The coal seams are stably distributed, with the floor plate consisting of aluminous mudstone and the roof plate composed of mudstone, which locally transitions to argillaceous limestone and limestone. The assemblage patterns of the coal reservoir and its roof and floor plates, as well as the variations of mineral composition in roof plate, indicate a transitional sedimentary environment between land and sea. (2) Significant differences in mechanical parameters and in-situ stress of coal seams and roof and floor plates were observed, preliminarily indicating good compressibility. …”
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  19. 159

    A Multi-Disciplinary Review of Current Sea-Level Rise Research in Florida by Anna Cathey Linhoss, Lisa Gardner Chambers, Kevin Wozniak, Tom Ankersen

    Published 2013-02-01
    “…Sea-level rise is an issue of paramount importance for the state of Florida due to its lengthy coastline, low relief, high coastal population density, ecologically and economically vital beaches, estuaries, and wetlands, and porous limestone geology. The rate of sea-level rise in Florida generally follows the global average (~3 mm per year) and is slowly gaining public attention as a significant threat to the natural and socioeconomic future of the state. …”
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  20. 160

    Total Seepage Resistance Model of Water-Displacing Diffusion of Slurry in Series and Parallel Fractures by Yang Hu, Junhe Xie, Jian Ge, Gang Liu

    Published 2022-01-01
    “…With the increase in mining depth, potential water inrush in the limestone-fractured aquifers of Taiyuan formation and Ordovician formation becomes seriously threatened to the mining process. …”
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