Showing 201 - 220 results of 310 for search '"limestone"', query time: 0.06s Refine Results
  1. 201
  2. 202

    Les quais romains d’Aizier (Eure) by Jimmy Mouchard

    Published 2020-12-01
    “…The site has revealed the remains of an ensemble of monumental Roman stone harbor terraces, made of powerful limestone reinforcements. Observed over nearly 25 m in length from east to west, 13.40 m in diameter from north to south, the terrasses correspond to 335 m2 of artificial riverbank attributed to the Early Roman Empire (2nd–3rd c.). …”
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  3. 203

    Development of UHPC Mixtures Utilizing Natural and Industrial Waste Materials as Partial Replacements of Silica Fume and Sand by Shamsad Ahmad, Ibrahim Hakeem, Mohammed Maslehuddin

    Published 2014-01-01
    “…Materials such as natural pozzolana (NP), fly ash (FA), limestone powder (LSP), cement kiln dust (CKD), and pulverized steel slag (PSS), all of which are abundantly available in Saudi Arabia at little or no cost, were employed in the development of the UHPC mixtures. …”
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  4. 204

    Frost Durability and Strength of Concrete Prepared with Crushed Sand of Different Characteristics by Ming-kai Zhou, Zhan-ao Liu, Xiao Chen

    Published 2016-01-01
    “…Lithology has no prominent influence on frost durability and compressive strength of CSC within the lithologies (dolomite, limestone, granite, basalt, and quartz) studied. Though compressive strength of CSC is a little higher than RSC under equal water to cement ratio, frost durability of CSC is no better than RSC especially for C30 CSC, and air-entraining agent is suggested for enhancing frost durability of C30 CSC exposed to freezing environment.…”
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  5. 205

    Low-cement eco-concrete and the role of recycled concrete aggregates (RCA), supplementary cementitious materials (SCMs), and other additives in improving sustainability and durabil... by N. Brioschi, E. Giner Cordero, S. Ng, C. Paglia

    Published 2024-12-01
    “…The materials used included II/A-LL 42.5 R cement, natural calcareous-silica aggregates, RCA from C30/37 concrete, wood waste ashes, and limestone filler. Experimental tests were conducted on fresh and hardened concrete, including workability, compressive strength, elastic modulus, carbonation resistance, freeze-thaw durability, and chloride penetration resistance. …”
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  6. 206

    CAMELLIA HOABINHENSIS (THEACEAE: SECT. CHRYSANTHA), A NEW YELLOW-FLOWERED SPECIES FROM NORTHERN VIETNAM by Van Hoi Quach, Ninh Tran, Van Dung Luong, Thanh Truong Hoang, Shuichiro Tagane, Van The Pham

    Published 2023-12-01
    “… A new species, Camellia hoabinhensis (section Chrysantha, Theaceae), is described and illustrated based on specimens collected from a lowland forest on limestone hills in Hoa Binh Province, northern Vietnam. …”
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  7. 207

    Le sanctuaire gallo-romain de Drevant (Cher) : état des connaissances et nouvelle approche archéologique des façades sud et est by Frédéric Méténier

    Published 2011-12-01
    “…These spaces, galleries, and sacred area are backfilled to implement of new concrete floors, tuileaux and limestone. Two monumental access are levelled, the South-West corner is closed while a new monumental threshold is created on the eastern front. …”
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  8. 208

    L’apport du système d’information géographique (SIG) dans la définition des zones de potentiel hydrique dans le bassin versant Abou Ali (Liban Nord) by Douha Akkari

    Published 2022-03-01
    “…The application of the water potentiality model shows that 13% of the area of the basin has a very high-water potentiality especially in the South-East, 39% shows an average potentiality in areas with marly-sandy and limestone-marly lithology, and 20% denote a low potential, especially in the west and in the center of the basin.…”
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  9. 209

    Influence of Concrete Sludge Addition in the Properties of Alkali-Activated and Non-Alkali-Activated Fly Ash-Based Mortars by Fotini Kesikidou, Stavroula Konopisi, Eleftherios K. Anastasiou

    Published 2021-01-01
    “…A mortar with 50% fly ash and 50% limestone filler as binders was used for comparison purposes. …”
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  10. 210

    Volatile Organic Compounds (VOCs) Distribution from PCB Waste and Vitrification by Reacting with Flux Agents by Raynard Christianson Sanito, Sheng-Jie You, Hsi-Hsien Yang, Ya-Fen Wang

    Published 2022-03-01
    “…The resins to the flux agents — shell powder, limestone and quartz sand ratio of 50:50 and 25:75 gave the best results for the vitrification compared to the ratio of 75:25 and control (absence of flux agent). …”
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  11. 211

    Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt Combustion by Kai Zhu, Yunhe Wang, Qi Zhou, Daquan Tang, Lingzhu Gu, Ke Wu

    Published 2018-01-01
    “….% hydrated lime, the total smoke release and the CO release rate both decrease by more than 20% relative to the addition of the same amount of limestone fillers and decrease by more than 10% relative to the addition of the same amount of magnesium hydroxide flame retardant.…”
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  12. 212

    Prediction Method for the Ground Vibration Damage Boundary of Thick and Hard Rock Layer Fracture Type Mine Quakes by Ming Zhang, Xuelong Hu, Min Tu, Yong Yue, Qingwei Bu

    Published 2022-01-01
    “…Finally, the results are used to predict the ground vibration damage boundary of limestone primary fracture in the longwall 16101 face of the Fuping Coal Mine.…”
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  13. 213
  14. 214

    Classification and identification of karstic aquifers in the OSHTORANKUH region by Tayebeh KIANI, mohamad Fatholahzadeh

    Published 2019-03-01
    “…The karst areas refers to individual areas that shaped by the dissolution of bedrock and subsurface drainage grid development and are connected mainly with limestone. The karstic formations outcrop 20 percent of the land surface of the planet is covered that 11 percent of Iran are part of this 20% is included. …”
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  15. 215

    Geomorphology of the Maladeta massif (Central Pyrenees): the traces of the last remaining glaciers by Ixeia Vidaller, Ana Moreno, Eñaut Izagirre, Ánchel Belmonte-Ribas, Luis Carcavilla, Juan Ignacio López-Moreno

    Published 2024-12-01
    “…The study area consists mainly of granodiorite but also has outcrops of limestone, shales, and quartzites at lower elevations. …”
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  16. 216

    The Role of Various Powders during the Hydration Process of Cement-Based Materials by Shuhua Liu, Hongling Wang, Jianpeng Wei

    Published 2017-01-01
    “…The role of various powders including glass powder (GP), limestone powder (LP), and steel slag powder (SSP) during the hydration process of cement-based materials was investigated by using X-ray diffraction (XRD), thermogravimetric and differential thermal analysis (TG-DTA), scanning electron microscopy (SEM), and strength tests. …”
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  17. 217

    Mechanical Behavior of Cracked Rock in Cold Region Subjected to Step Cyclic Loading by Liang Zhang, Fujun Niu, Minghao Liu, Jing Luo, Xin Ju

    Published 2022-01-01
    “…The test results show that limestone has obvious strengthening effect under cyclic loading due to local crushing and filling of internal structural plane. …”
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  18. 218

    The Contribution of the Geographic Information System GIS in the Definition of Water Potential Zones in the Abou Ali Watershed (North Lebanon) by Douha Akkari

    Published 2022-03-01
    “…The application of the water potentiality model shows that 13% of the area of the basin has a very high-water potentiality especially in the South-East, 39% shows an average potentiality in areas with marly-sandy and limestone-marly lithology, and 20% denote a low potential, especially in the west and in the center of the basin.…”
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    Article
  19. 219

    Deformation Analysis of Reinforced Retaining Wall Using Separate Finite Element by Xingli Jia, Jinliang Xu, Yuhai Sun

    Published 2018-01-01
    “…Taking the modulus of foundation soil as the influencing factor of the foundation soil, taking the geogrid stiffness, length, and spacing as the influencing factors of geogrids, and taking the filling type of limestone, fly ash, and silty clay as the influencing factors of backfill in the wall, the horizontal and vertical deformations of reinforced retaining wall under different factors using the methods of controlling a single variable analysis are calculated. …”
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  20. 220

    Research on Coal and Rock Type Recognition Based on Mechanical Vision by Qiang Zhang, Jieying Gu, Junming Liu

    Published 2021-01-01
    “…The results show the following: (1) in the eight kinds of rocks, the recognition accuracy of shale and limestone is 90%, that of anorthosite is 95%, and those of other rocks are 100%; (2) the accuracy of comprehensive identification of coal, rock, and gangue is 93%, the comprehensive of coal and gangue is 78%, and the rock classification is 97%; (3) the identification time of 6 types of coal samples, 8 types of rock samples, and 2 types of coal gangue samples are in the range of 2 s∼3 s, which is far less than 10 s, which can meet the requirements of coal and rock identification in terms of recognition speed; and (4) according to 20 groups of data, the range, variance, and standard deviation of the same coal gangue sample meet the accuracy requirements of coal and rock identification. …”
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