Showing 161 - 180 results of 310 for search '"limestone"', query time: 0.05s Refine Results
  1. 161

    Evaluation of phosphate sources using ruminal fiber transit kinetics methodology by Claudiney de Jesus Couto, Bruna Cardoso Braga, Raphael dos Santos Gomes, Wagner Pessanha Tamy, Severino Delmar Junqueira Villela, Fernando de Paula Leonel, Fernando de Paula Leonel

    Published 2025-01-01
    “…The treatments were: negative control (NC) without supplementary phosphorus; dicalcium phosphate from igneous rock with sulfuric acidulation, neutralization with limestone, and the show physical form of microgranules (ISLG); Dicalcium phosphate from igneous rock with sulfuric acidulation, neutralization with hydrated lime, and the physical form of powder (ISLhP); Dicalcium phosphate from sedimentary rock with hydrochloric acidulation, neutralization with limestone, and the micro-granulated show physical form (SeCLG); Dicalcium phosphate from the monocalcium phosphate and hydrated lime reaction adjusted with phosphoric acid, and the powder physical form (MLhPaP). …”
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  2. 162

    Study for the Influence of Mineral Admixtures on the Workability of Self-compacting Concrete by WANG Kunyun, HU Diyong, YANG Zhu

    Published 2021-01-01
    “…As the most important performance of self-compacting concrete (SCC),the workability has been studied extensively and deeply.In addition to high sand ratio and low water-cement ratio,mineral admixtures also have a great impact on the workability of SCC.In order to promote the use and development of SCC,after consulting a large number of domestic and foreign documents,this paper summarizes the use and research status of mineral admixtures in SCC in recent years,reviews the influence of different mineral admixtures on the workability of SCC,and specifies their mechanism.Generally speaking,common admixtures such as fly ash,slag,silica fume and limestone powder can improve part of the workability of SCC,and the main mechanism includes the “morphological effect”,“water reducing effect” and “volume effect” of these admixtures.However,there are few studies on the effects of mineral admixtures such as copper slag,waste glass slag,bagasse ash,pumice powder and lithium slag on the workability of SCC,so they are still in doubt,and need to be further studied.…”
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  3. 163

    Application of Electrical Resistivity Tomography Technique for Characterizing Leakage Problem in Abu Baara Earth Dam, Syria by Walid Al-Fares

    Published 2014-01-01
    “…The analysis of the inverted ERT sections revealed the presence of fractured and karstified limestone rocks which constitute the shallow bedrock of the dam reservoir. …”
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  4. 164

    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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  5. 165

    Un habitat groupé antérieur au xiie siècle préservé sous forêt : le site de Goa (Val-Suzon, Côte-d’Or) by Rémi Landois, Jean-Pierre Garcia, Amélie Quiquerez

    Published 2019-09-01
    “…The forest context makes it possible to observe and analyze the parcels of land around the houses, which extends over a wide limestone plateau. All such data allow discussing the overall landscape evolution from rural settlement to forest reconquest during the key-period of the 11-12th centuries.…”
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  6. 166

    The Use of Lime in Fish Ponds by Andy M. Lazur, Charles E. Cichra, Craig Watson

    Published 2013-08-01
    “…However, lime is casually used to describe two different types of materials, used for very different purposes. Agricultural limestone refers to calcite (calcium carbonate) and dolomite (calcium magnesium carbonate). …”
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  7. 167

    Des pieds de moutons dans la citerne du sanctuaire de Corent (Veyre-Monton, Puy-de-Dôme) : rejet détritique ou dépôt rituel ? by Sylvain Foucras

    Published 2014-03-01
    “…Everything seems to show that once this act was done, the tank was quickly filled in, and then sealed by an impressive limestone slab. The zooarchaeological study reveals that despite their anarchic position at the bottom of the structure, these legs are divided equally between forelimb and hindlimb and between left and right. …”
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  8. 168

    The Use of Lime in Fish Ponds by Andy M. Lazur, Charles E. Cichra, Craig Watson

    Published 2013-08-01
    “…However, lime is casually used to describe two different types of materials, used for very different purposes. Agricultural limestone refers to calcite (calcium carbonate) and dolomite (calcium magnesium carbonate). …”
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    Article
  9. 169

    THE INVENTORY AND HIERARCHY OF GEOMORPHOSITES IN THE VLĂDEASA MASSIF by GABRIELA COCEAN

    Published 2012-12-01
    “…The karst geomorphosites are all situated in the limestone area of the massif, the Stanciului Valley. …”
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  10. 170

    A new species of Cyrtodactylus Gray, 1827 (Squamata, Gekkonidae) from Yunnan Nangunhe National Nature Reserve, China by Shuo Liu, Zhimin Li, Wenguang Duan, Mian Hou, Dingqi Rao

    Published 2025-01-01
    “…Cyrtodactylus zhenkangensis inhabits karst limestone, while the new species inhabits forest. The new species is the 29th species of the C. chauquangensis group and the third forest-dwelling species of this group.…”
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  11. 171

    Faunistic survey of terrestrial isopods (Isopoda: Oniscidea) in the Boč Massif area by Blanka Ravnjak, Ivan Kos

    Published 2014-06-01
    “… In 2005, terrestrial isopods were sampled in the Boč Massif area, eastern Slovenia, and their fauna compared at five different sampling sites: forest on dolomite, forest on limestone, thermophilous forest, young stage forest and extensive meadow. …”
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  12. 172

    CaCO3–Polymer Nanocomposite Prepared with Supercritical CO2 by Hiroaki Wakayama

    Published 2018-01-01
    “…The flexural strength of the nanocomposite was larger than the flexural strengths of limestone and CaCO3 produced by hydrothermal hot pressing. …”
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  13. 173

    Study on Influencing Factors of Asphalt-Aggregate Stripping Mechanism by Fuyu Wang, Yan Li, Liting Yu, Weichen Pang

    Published 2021-01-01
    “…It can be concluded that the mass loss of asphalt film is minimal with limestone and modified asphalt, which shows that it has the best spalling resistance.…”
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  14. 174

    Effect of Curing Time on the Surface Permeability of Concrete with a Large Amount of Mineral Admixtures by Zhenguo Liu, Guorong Liu, Guosheng Zhang

    Published 2022-01-01
    “…Under the condition of insufficient standard curing time, adding a small amount of limestone powder can effectively enhance the chloride ion permeability of concrete with a large amount of fly ash and slag.…”
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  15. 175

    Estimation of parameters for 3D geomechanical modeling from triaxial test results by Artem Kukhtinskii

    Published 2025-03-01
    “…The proposed methodologies are demonstrated using limestone specimens from Central Asian gas fields. …”
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  16. 176

    Formulation and characterisation of micro and macro polypropylene fibre reinforced mortar by Fatiha Bendjilali, Khadra Bendjillali, Krobba Benharzallah

    Published 2022-05-01
    “…The work is carried out on mortars, using limestone crushing sand, composite cement and synthetic fibres. …”
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  17. 177

    Study of the Hydration Mechanism of Portland Cement with Raman Spectroscopy Applying CO2 Laser Radiation by D. Quiroz-Portillo, I. Rosales-Candelas, J. J. Soto-Bernal, R. González-Mota, G. V. Vázquez

    Published 2023-01-01
    “…The detected band of calcium carbonate, which is due to the incorporation of limestone during the grinding process, shows that it is responsible largely for the acceleration in the reactions during the hydration of the cement. …”
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  18. 178

    Laboratory Investigation of Fatigue Characteristics of Asphalt Mixtures with Steel Slag Aggregates by Hassan Ziari, Shams Nowbakht, Sajad Rezaei, Arash Mahboob

    Published 2015-01-01
    “…It was found that replacing the 50% of the limestone coarse or fine aggregate by SSA improved the mechanical properties of the AC mixes.…”
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  19. 179

    Jurassic Marine Crocodiles in the Monts d’Ardèche UNESCO Global Geopark by Bernard Riou, Mehdi Bennourine, Nicolas Klee, Marc Lutz

    Published 2021-09-01
    “…This includes a sedimentary boundary between the Jurassic and Cretaceous, represented by limestone and marl. Fossils of crocodilians have been discovered in these layers, highlighting the diversity of past marine environments. …”
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  20. 180

    Analysis of Landslide Motion Characteristics Based on UDEC: A Case Study of the Landslide in Shiban Village,Ganlong Town,Songtao County, Guizhou Province by LU Bifeng, ZHANG Hui, XIE Peihong

    Published 2023-01-01
    “…On July 8,2020,a landslide occurred in Shiban Village,Ganlong Town,Songtao County,Guizhou Province,causing casualties and diverting the river below.Through field investigation and section measurement,the development characteristics and formation mechanism of the landslide are analyzed.In addition,the motion characteristics of the landslide are simulated by the discrete element program UDEC to restore the deformation and failure process of the landslide from start-up to river blocking.The time-effect displacement curves of different parts of the landslide are obtained.The conclusions are as follows:The landslide is produced under the comprehensive action of unfavorable topography and geomorphology and formation lithology combination,rock mass structure,rainfall,and human engineering activities.The sliding surface is the contact surface of marlstone and coarse-grained limestone.The formation process of the landslide can be divided into three stages:leading-edge slip-trailing-edge crack,whole slippage,and collision accumulation.The landslide has a violent starting effect,and the maximum start-up rate can reach 5.24 m/s.The displacement and deformation rates of the trailing edge lag behind those of the leading edge,and the maximum horizontal displacement of the landslide is 217.5 m.…”
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