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Journal articles on the topic 'Air and Hydraulic Lime'

Author: Grafiati

Published: 18 April 2022

Last updated: 30 July 2025

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1

Copsey, Nigel. "LIKE-FOR-LIKE AND COMPATIBLE MORTARS FOR THE REPAIR OF TRADITIONAL BUILDINGS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIV-M-1-2020 (July 24, 2020): 1017–24. http://dx.doi.org/10.5194/isprs-archives-xliv-m-1-2020-1017-2020.

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Abstract. The subject of this paper is traditional mortar preparation and materials, particularly earth-lime and air or feebly hydraulic hot mixed lime mortars with particular emphasis upon British practice and experience, whilst stressing their international ubiquity historically. It will demonstrate their appropriate functional performance and attest to the need to use similar mortars, similarly composed and prepared, in the repair and conservation of traditionally constructed buildings. It will question how commonly modern Natural Hydraulic Limes may be considered to be like-for-like or of

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2

Stenholt-Jacobsen, Rasmus, Kurt Kielsgaard Hansen, and Inge Rörig-Dalgaard. "Karsten tube analysis for joint mortar identification in masonry." Journal of Physics: Conference Series 2654, no. 1 (2023): 012044. http://dx.doi.org/10.1088/1742-6596/2654/1/012044.

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Abstract The present work examines the Karsten tube penetration test to identify mortar types in existing masonry, for mortars containing air-lime or hydraulic binders. Mortar type identification is e.g. of relevance for the reusability of the fired clay bricks in the masonry, where a hydraulic binder content makes the mortar removal process significantly more difficult. The Karsten tube test makes it possible to make a simple and non-destructive mortar analysis on-site assessing the water absorption of the mortar, via the surface of the mortar joint alone. The present approach considers both

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Cantisani, Emma, Fabio Fratini, and Elena Pecchioni. "Optical and Electronic Microscope for Minero-Petrographic and Microchemical Studies of Lime Binders of Ancient Mortars." Minerals 12, no. 1 (2021): 41. http://dx.doi.org/10.3390/min12010041.

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In this paper, the advances in the use of optical and electronic microscope for study of the minero-petrographic and microchemical features of lime binders of ancient mortars are discussed for various case studies. Mortars belonging to several historic periods and with different functions in building structures and archaeological sites were selected in order to verify the complementarity of optical and electronic microscope analyses applied to these artificial materials. The data obtained with the application of optical and microscope analyses were able to provide detailed and more precise inf

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4

Megna, Bartolomeo, Dionisio Badagliacco, Carmelo Sanfilippo, and Antonino Valenza. "Physical and Mechanical Properties of Sustainable Hydraulic Mortar Based on Marble Slurry with Waste Glass." Recycling 6, no. 2 (2021): 37. http://dx.doi.org/10.3390/recycling6020037.

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This paper aims to propose and characterize a sustainable hydraulic mortar entirely obtained by the reuse of waste materials, with marble slurry coming from quarries in the north-western Sicily and glass powder coming from a waste collection plant in Marsala (Province of Trapani). The first was used as raw material to produce the mortar binder by a kilning and slaking process, while the second was used as a pozzolanic additive. The chemical and morphological characterization of the marble slurry was done by XRD, FTIR, STA and SEM analyses. Glass powder was analyzed through particle size distri

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Bataeva, P. D., Z. Z. Alarhanova, Kh M. Bataeva, and A. D. Bataev. "On the issue of forming the properties of restoration compositions based on air and hydraulic binders." Herald of Dagestan State Technical University. Technical Sciences 51, no. 4 (2025): 179–90. https://doi.org/10.21822/2073-6185-2024-51-4-179-190.

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Objective. This study provides a review of organic additives, organic and inorganic binders, including air and hydraulic lime binders. Heat and mass transfer in the processes of decarbonization and carbonization of air and hydraulic lime binders and repair and restoration compositions based on them is considered, knowledge of which is necessary for the design of equipment and technological processes for the production of mineral binders, as well as technologies and compositions for repair and restoration work. Method. The dissociation and decarbonization reactions are given as reversible react

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Parra-Fernández, C., and M. J. Varas-Muriel. "Petrographic and petrophysical characterization of the main aerial and hydraulic mortars used in the construction and rehabilitation sectors." Materiales de Construcción 75, no. 357 (2025): e367. https://doi.org/10.3989/mc.2025.379124.

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Petrographic and petrophysical characterization of aerial and hydraulic mortars allows their differentiation and the establishment of their most suitable applications. Natural, aerial or hydraulic lime mortars as well as artificial cements mortars present different physical properties. It shall be noted that physical characteristics, which depend on petrographic characteristics, impact on its mechanical properties. Therefore, this comparative study with standardised techniques and tests, has analysed these mortars from a petrographic, petrophysical and mechanical point of view. The chemical pr

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7

Pesce, G. L., C. R. Bowen, J. Rocha, et al. "Monitoring hydration in lime-metakaolin composites using electrochemical impedance spectroscopy and nuclear magnetic resonance spectroscopy." Clay Minerals 49, no. 3 (2014): 341–58. http://dx.doi.org/10.1180/claymin.2014.049.3.01.

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AbstractThis paper describes a study of the hydraulic reactions between metakaolin (MK) and air lime using electrochemical impedance spectroscopy (EIS) and nuclear magnetic resonance spectroscopy (NMR). Tests were carried out at 20, 25 and 30°C on lime-MK pastes with 10:1 w/w ratio. Tests over 28 days allowed identification of relevant changes in the EIS signals and characterization of pastes using thermal analysis (TGA/DSC), scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP) and uni-axial compressive tests. Tests over shorter periods of time (up to 42 h) allowed more deta

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8

Zhang, Dajiang, Kuizhen Fang, Dong Xu, Suping Cui, and Dongmin Wang. "Evaluation of the environmental medium erosion resistance of natural hydraulic lime and metakaolin-air lime mortars." Case Studies in Construction Materials 18 (July 2023): e02044. http://dx.doi.org/10.1016/j.cscm.2023.e02044.

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9

Janotova, D., and Z. Slizkova. "Lime-based mortars with various binder composition: characterization and freeze-thaw resistance assessment." IOP Conference Series: Materials Science and Engineering 1205, no. 1 (2021): 012009. http://dx.doi.org/10.1088/1757-899x/1205/1/012009.

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Abstract The study focused on lime mortars with different lime binder types regarding the frost attack effects on their microstructure and mechanical characteristics. The performances of studied mortars in hardened state was significantly influenced by the amount of mixing water and by curing conditions. Inhomogeneous microstructure was observed inside the 360 days old specimens with dimensions 40 × 40 × 160 mm in the case of all lime mortars types. The different state of the binder hardening with respect to various distances from the specimen surface and the different behaviour of matured out

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10

Cabrera, Santiago, Kerstin Elert, Anabela Guilarducci, and Andrea Margasin. "The effect of local pozzolans and lime additions on the mineralogical, physical and mechanical properties of compressed earth blocks in Argentina." Revista de la construcción 21, no. 2 (2022): 248–63. http://dx.doi.org/10.7764/rdlc.21.2.248.

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The purpose of this research is to evaluate the mineralogical, physical, and mechanical properties of compressed earth blocks (CEB) stabilized with lime and mineral admixtures easily obtained in Argentina: natural pozzolans and brick powder. the admixture mineralogical composition and their pozzolanic potential as well as the development of hydraulic phases upon reaction with calcium hydroxide (lime) were determined, emphasizing the formation of hydrated cementing compounds. Samples with different percentages of lime and mineral additions were prepared in order to test their compressive streng

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Ranesi, Alessandra, Paulina Faria, and Maria do Rosário Veiga. "Traditional and Modern Plasters for Built Heritage: Suitability and Contribution for Passive Relative Humidity Regulation." Heritage 4, no. 3 (2021): 2337–55. http://dx.doi.org/10.3390/heritage4030132.

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Plasters have covered wide surface areas of buildings since antiquity, with a main purpose of indoor protection of the substrate on which they are applied. When no longer functional, they might require substitution with solutions that can combine compatibility with the substrate with the current need to mitigate building emissions. Indeed, plasters can contribute to lowering buildings’ energy demands while improving indoor air quality and the comfort of buildings’ users, as plasters can be used as passive regulators of relative humidity (RH). Hence, this study presents the relative-humidity-de

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Columbu, Stefano, Marco Usai, Concetta Rispoli, and Dario Fancello. "Lime and Cement Plasters from 20th Century Buildings: Raw Materials and Relations between Mineralogical–Petrographic Characteristics and Chemical–Physical Compatibility with the Limestone Substrate." Minerals 12, no. 2 (2022): 226. http://dx.doi.org/10.3390/min12020226.

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This paper deals with the “modern” plaster mortars based on air lime, hydraulic lime, and cement used between the 1950s and 1990s of the last century, taking, as a case study, a historical building of the Cagliari city whose foundations and ground floor are cut into in-situ limestone. Different plaster layers (i.e., arriccio and intonachino, paint), applied on the excavated limestone walls, were collected from cave-room. All samples were analysed by optical and electron (SEM-EDS) microscopy and X-ray diffractometry (XRD) in order to define their microstructures, textures and compositional feat

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13

Kang, Sung-Hoon, Yang-Hee Kwon, and Juhyuk Moon. "Quantitative Analysis of CO2 Uptake and Mechanical Properties of Air Lime-Based Materials." Energies 12, no. 15 (2019): 2903. http://dx.doi.org/10.3390/en12152903.

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In the cement industry, utilization of a sustainable binder that has a lower energy consumption and carbon dioxide (CO2) emission than Portland cement is becoming increasingly important. Air lime is a binder that hardens by absorbing CO2 from the atmosphere, and its raw material, hydrated lime, is manufactured at a lower temperature (around 900 °C) than cement (around 1450 °C). In this study, the amount and rate of CO2 uptake by air lime-based materials are quantitatively evaluated under ambient curing conditions of 20 °C, 60% relative humidity, and 0.04% CO2 concentration. In addition, the ef

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14

Bustos, A., E. Moreno, F. González, and A. Cobo. "Influence of the addition of carbon fibers on the properties of hydraulic lime mortars: comparison with glass and basalt fibers." Materiales de Construcción 70, no. 340 (2020): 229. http://dx.doi.org/10.3989/mc.2020.00120.

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In recent years, the use of hydraulic lime in conservation and restoration of historic buildings has increased due to the pathological processes involved in the use of Portland cement. This investigation determines the properties of hydraulic lime mortars with added carbon fibers for their possible use in restoration of architectural heritage. The results obtained are compared with mortars to which glass and basalt fibers have been added. The results show that the fibers affect significantly the behaviour of the mortar. Although the fibers have a negative impact in the workability and increas

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15

Gruchot, Andrzej, Katarzyna Kamińska, and Agnieszka Woś. "The Effects of Lime and Cement Addition on the Compaction and Shear Strength Parameters of Silty Soils." Materials 18, no. 5 (2025): 974. https://doi.org/10.3390/ma18050974.

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This article presents the results of laboratory tests of compaction parameters and shear strength of silty soils with and without the addition of hydraulic binder in the form of lime and/or cement. The tests were carried out on samples formed with an optimum moisture content and with 0, 3, 5, and 8% hydraulic binder added to the dry mass of the soil. The soil samples were examined after 7 and 14 days of air–water treatment without and with freeze–thaw cycles. It was found that the addition of lime and cement caused changes in the compaction parameters. This effect depended to a large extent on

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16

Kalinkina, E. V., A. M. Kalinkin, A. G. Ivanova, E. A. Kruglyak, and B. I. Gurevich. "Composite mechanically activated binders based on power plant fly ash, calcite and two-water gypsum." Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities 1, no. 2/2022 (2022): 50–57. http://dx.doi.org/10.37614/2949-1185.2022.1.2.006.

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The paper presents the results of studying the binding properties of a mechanically activated composition including fly ash from the Apatity Thermal Power Plant with increased calcium content, calcite concentrate produced from apatite-carbonatite ores of the Kovdorsky deposit and natural gypsum stone. It was found that the composition, depending on the mixing ratio and curing conditions, displays characteristics of both hydraulic binder similar to lime-ash one and air binder similar to gypsum.

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17

Kiecana, Monika, Piotr Kanty, and Klaudia Łużyńska. "Optimal control time evaluation for “dry DSM” soil-cement composites." MATEC Web of Conferences 251 (2018): 01023. http://dx.doi.org/10.1051/matecconf/201825101023.

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Soil improvements with hydraulic binders are a widespread practice in foundation works. They vary depending on the mixing method (jet grouting hydraulic, deep soil mixing -mechanical), medium type (wet/water, dry/air) and binder type (cement, lime, fly ash or mixtures). The produced component’s strength changes in time thus its control should change in time as well. The paper presents the results of laboratory testing of an organic soil component mixed in dry method. The process of samples preparation and testing methodology of compressive strength and stiffness is described. Volatility of the

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18

Bromblet, Ph. "Evaluation of the durability and compatibility of traditional repair lime-based mortars on three limestones / Bestimmung der Beständigkeit und der Verträglichkeit traditioneller Repararturmörtel mit Kalk als Bindemittel auf drei unterschiedlichen Kalksteinen." Restoration of Buildings and Monuments 6, no. 5 (2000): 513–28. http://dx.doi.org/10.1515/rbm-2000-5500.

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Abstract Tests were carried out on lime-based mortars for the reparation of three types of limestone extensively used in French monuments (Tuffeau, Saint Maximin and Courville limestones). The stones differ through their physical properties, both mechanical and petrophysical. The study aimed to characterize the properties of air lime and natural hydraulic lime-based mortars and to compare them to the stones. The durability was assessed by accelerated ageing, pull-off tests and description of the fracture pattern on repaired samples. The results show that such mortars are not equivalent but bot

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19

Contrafatto, Loredana, Salvatore Gazzo, Antonio Purrazzo, and Antonio Gagliano. "Thermo-mechanical Characterization of Insulating Bio-plasters Containing Recycled Volcanic Pyroclasts." Open Civil Engineering Journal 14, no. 1 (2020): 66–77. http://dx.doi.org/10.2174/1874149502014010066.

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Aim: The research proposes the reuse of volcanic wastes in the production of lightened and insulating bio-plasters. Introduction: The goal is the production of a novel sustainable construction material that reduces the environmental impact. Methods: Four mixtures were designed. The recycled Volcanic Ash was used in combination with two bio-compatible binders; basically Natural Hydraulic Lime (NHL) or calcium hydroxide blended with a commercial Portland cement (CH-CEM). To improve thermal properties, CH-CEM mixtures were treated with an Air Entraining Agent (AEA) in two different percentages an

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20

Im, Han Ul, Sang Ok Lee, and Gwang Yong Chung. "Material Properties of Lime Mortars Used in the Architectural Heritage of the Joseon Dynasty." Heritage 8, no. 2 (2025): 82. https://doi.org/10.3390/heritage8020082.

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This study aimed to identify the raw materials and characteristics of lime mortar samples recovered from three Joseon dynasty architectural heritage sites: the Munsusanseong Fortress in Gimpo, Namhansanseong Fortress, and Godeung-dong lime-barrier tomb in Seongnam. To achieve this, comprehensive analyses were conducted, including physical property assessments (specific gravity, water absorption, apparent porosity, hydrochloric acid aggregate test, and particle size distribution), material characterization using optical microscopy and SEM-EDS, as well as XRD, WD-XRF, and TGA analyses. The resul

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21

Othman, Farid, Nur Azam Abdullah, Erwin Sulaeman, and Sher Afghan Khan. "Novel Pneumatic System for Lime Dosage in Water Treatment Application." Journal of Physics: Conference Series 2129, no. 1 (2021): 012076. http://dx.doi.org/10.1088/1742-6596/2129/1/012076.

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Abstract This paper proposes a new pneumatic mechanism for lime dosage in water treatment application. Conventionally, current water treatment system technologies utilising pump system, which requires scheduling maintenance of operation to avoid choke problem due to scaling development. The choke formation depends on the lime dosage concentration, which will be based on the time of operations. Technically, the pneumatic system uses such a hydraulic mechanism consisting of fluid, especially liquid oil, to operate, requiring higher maintenance costs. Based on these arguments, this research inves

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Zhang, Shaoyun, Manli Sun, Qinglin Guo, Linyi Zhao, and Zhipeng Li. "Study on the Mechanical Properties and Durability of Hydraulic Lime Mortars Based on Limestone and Potassium Feldspar." Applied Sciences 13, no. 4 (2023): 2412. http://dx.doi.org/10.3390/app13042412.

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Natural hydraulic lime (NHL) can be used as an inorganic cementitious material, as it exhibits low shrinkage, salt-alkali resistance, moderate strength, and good durability with cultural relics. There has been increasing interest in NHL, as it is considered an appropriate material for the restoration and reinforcement of architectural cultural relics. In this study, limestone and potassium feldspar were mixed and calcined at different ratios and high temperatures, and artificial hydraulic lime (HL) was produced. According to the X-ray diffraction (XRD) results, the resulting products after hig

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Giosuè, Chiara, Alessandra Mobili, Barbara Citterio, Francesca Biavasco, Maria Letizia Ruello, and Francesca Tittarelli. "Innovative hydraulic lime-based finishes with unconventional aggregates and TiO2 for the improvement of indoor air quality." Manufacturing Review 7 (2020): 13. http://dx.doi.org/10.1051/mfreview/2020010.

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This paper reports a study on 8 unconventional hydraulic lime-based mortars able to improve indoor air quality by acting as passive systems. Mortars have been prepared with commercial sand or highly adsorbent materials as aggregates with/without TiO2 as photocatalytic agent, to test also the decomposition of airborne pollutants. Mechanical properties, hygrometric behavior, inhibition of growth of molds and depollution properties have been tested. Despite using porous materials (zeolite and activated carbon), in mortars with unconventional aggregates, compressive strength is higher than in sand

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Gao, Ying Min, Jing Li, and Jian Hui Yao. "Research on Friction Hot Forming Technology of Hydraulic Cylinder." Applied Mechanics and Materials 602-605 (August 2014): 37–40. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.37.

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Hydraulic parts with three sealing devices always leak in use, absorber and air spring for example. Hydraulic cylinder can be sealed by itself if friction hot forming technology is adopted on hydraulic cylinder at both ends. By going through the technology, two sealing devices of hydraulic parts are saved, the leak of hydraulic parts is avoided, the rigidity of hydraulic parts is enhanced, the structure of hydraulic parts is optimized and the service life of hydraulic parts is increased.

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Brzyski, Przemysław. "The effect of pozzolan addition on the physical and mechanical properties of lime mortar." E3S Web of Conferences 49 (2018): 00009. http://dx.doi.org/10.1051/e3sconf/20184900009.

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Hydrated lime, due to its life cycle (return to the natural form as a result of binding and hardening) shows a positive ecological aspect. The binder is often used in building materials based on plant components due to the high alkaline reaction and low diffusion resistance, as well as in mortars and plasters. However, it is an air binder with low strength parameters and the process of its binding and hardening is long-lasting. One of the ways to accelerate the binding processes and also to increase the strength of the binder is the use of additives in the form of pozzolanic materials which re

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Bayon-Barrachina, Arnau, and Petra Amparo Lopez-Jimenez. "Numerical analysis of hydraulic jumps using OpenFOAM." Journal of Hydroinformatics 17, no. 4 (2015): 662–78. http://dx.doi.org/10.2166/hydro.2015.041.

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The present paper deals with a hydraulic jump study, characterization and numerical modeling. Hydraulic jumps constitute a common phenomenon in the hydraulics of open channels that increases the shear stress on streambeds, so promoting their erosion. A three-dimensional computational fluid dynamics model is proposed to analyze hydraulic jumps in horizontal smooth rectangular prismatic open-air channels (i.e., the so-called classical hydraulic jump). Turbulence is modeled using three widely used Reynolds-averaged Navier–Stokes (RANS) models, namely: Standard k − ɛ, RNG k − ɛ, and SST k − ω. The

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Dandy, Nugroho, Ervadius Bana, and Suhartatik Titik. "Perencanaan Debit dan Sistem Air Bersih Perumahan Manyar Raya Resort Kecamatan Manyar Kabupaten Gresik." Wahana Teknik 10, no. 1 (2021): 39–48. https://doi.org/10.5281/zenodo.5551842.

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<em>Abstract</em> <em>Water has a very important role in the life of humans and other creatures. Population growth must be followed by the availability of clean and healthy water. This research was conducted at the Manyar Raya Resort Sukomulyo Housing, Manyar District, Gresik Regency. The total population in 2018 was around 400 people, consisting of various ages. The purpose of this study is to: 1) determine the need for clean water for housing until 2025, 2) determine the hydraulic conditions of the pipeline network (pressure, speed, and slope of the hydraulic line), and 3) knowing the analys

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Calle, Klaas, Tim De Kock, Veerle Cnudde, and Nathan Van den Bossche. "Liquid moisture transport in combined ceramic brick and natural hydraulic lime mortar samples: Does the hygric interface resistance dominate the moisture transport?" Journal of Building Physics 43, no. 3 (2019): 208–28. http://dx.doi.org/10.1177/1744259119857762.

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To reduce the energy use of the European building stock, a large potential can be found in the renovation of cultural heritage buildings. However, insulating these valuable masonry facades often increases the risk of moisture-related damage phenomena such as mold growth and frost damage. Therefore, detailed heat, air and moisture simulations are required to quantify and assess these risks. One of the unknown parameters in the simulations for historic masonries is the hygric interface resistance between the bricks and the lime mortars. Consequently, microfocus X-ray scans are performed during a

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Setiawan, Agus, Aam Hamdani, Nisaudzakiah Utami, and Nana Wartana. "Rancang bangun sistem hydraulic ram pump untuk pengadaan air bersih." Jurnal Abmas 24, no. 1 (2024): 27–36. https://doi.org/10.17509/abmas.v24i1.52822.

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Water is the source of life for living things, especially humans. Humans cannot live without water. Parakan Wayang Hamlet, Sirnajaya Village, Gunung Halu Subdistrict, West Bandung Regency, is one area with difficulty getting clean water. Based on a survey, the area's economic, geographical, and remote aspects make it difficult for residents of the hamlet to get clean water. The hamlet's residents use the mountain valley river water for survival. They walk down the mountain carrying jerry cans to meet their daily clean water needs. River water that continues to flow in the area can potentially

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Judd, Miles, Dylan Squires, Kutsi Akcicek, Marialuigia Sangirardi, and Sinan Acikgoz. "Does lack of CO₂ control in environmental chambers influence the strength and stiffness of hydraulic lime mortars?" MATEC Web of Conferences 403 (2024): 02002. http://dx.doi.org/10.1051/matecconf/202440302002.

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This study investigates the influence of carbon dioxide (CO2) control in environmental chambers, where hydraulic lime mortar specimens are typically cured before strength testing according to EN1015-11:2019. To do this, three sets of identical mortar samples were cast. Two sets were cured in an environmental chamber that offered the same temperature and relative humidity but different CO2 conditions. In the first chamber, carbonation reactions used the ambient CO2 trapped in the hermetically sealed chamber air. The second chamber was connected to an external carbon dioxide supply, which mainta

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Mohammad, Ayub Khan, Singh Suraj, Ji Om, Gupta Gunjan, and Yadav Avanish. "PARAMETER DETERMINATION OF HYDRAULIC DYNAMOMETER." INTERNATIONAL JOURNAL OF ENGINEERING TECHNOLOGIES AND MANAGEMENT RESEARCH 5, no. 2 :SE (2018): 137–47. https://doi.org/10.5281/zenodo.1202074.

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The project is basically based upon the determination of parameters of Hydraulic Dynamometer using LabVIEW. LabVIEW is the programming tool that is used for automation purposes mainly in industries. Herein, we will be judging the various parameters like Load Cell, Temperature Sensors etc, by interfacing the digital set-up with our manual set-up. The Load Cell that will be used is the S-shaped Load Cell and the various temperature sensors are used to determine temperatures like water inlet temperature, water outlet temperature, air temperature etc. After measuring these parameters we will be in

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Delgado, João, António Azevedo, Isabel Ribeiro, Ana Guimarães, and Vasco Freitas. "Hygric resistance in multilayer building materials – a prevision new methodology." MATEC Web of Conferences 282 (2019): 02017. http://dx.doi.org/10.1051/matecconf/201928202017.

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This work presents the results of an experimental campaign in order to determine the hygric resistance in multilayered building components, with different interface types. The results show a slowing of the wetting process due to the interfaces hygric resistance. The samples with hydraulic contact interface (cement mortar) present lower absorption rate than the samples with lime mortar. The influence of air space between layers was also demonstrated, i.e., the air space interfaces increase the coefficients of capillary significantly, as the distances from the contact with water increase. The hy

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binti Zainuddin, Atiqah Najwa, Mazidah binti Mukri, Nik Nurul Syuhada binti Nik Ab Aziz, and Mohamed Khatif Tawaf bin Mohamed Yusof. "Study of Nano-Kaolinite Properties in Clay Liner Application." Materials Science Forum 889 (March 2017): 239–42. http://dx.doi.org/10.4028/www.scientific.net/msf.889.239.

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This paper reports the outcome of the laboratory investigation conducted on new clay liners modified with kaolinite combined with various content of lime-treated, various content of bentonite and admixture of kaolinite adding with 3% nano-kaolinite for composition. The 3% nano-kaolinite was chosen based on earlier finding by S.V.Netethu (2013). The various content of lime-treated and bentonite adopted are 2.0%, 5.0%, 7.5% and 10.0% by total weight of the kaolinite. Compaction tests was performed on the resulted modified clay liner samples to evaluate the best percentage that gives optimum mois

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Ozkan, Fahri, Ibrahim Halil Demirel, Muhammed Cihat Tuna, and Ahmet Baylar. "The effect of length of free-surface gated circular conduit on air-demand ratio and aeration efficiency." Water Supply 15, no. 6 (2015): 1187–92. http://dx.doi.org/10.2166/ws.2015.081.

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Aeration is the process of bringing water and air into close contact in order to increase dissolved oxygen concentration. The concentration of dissolved oxygen is an important indicator of water quality because aquatic life lives on the dissolved oxygen in the water. The hydraulic structures can be accepted as the key components in increasing dissolved oxygen concentration because of the strong turbulent mixing associated with substantial air bubble entrainment at these structures. Closed conduit is a classic example of a hydraulic structure where aeration occurs. This work focused on determin

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Luo, You Xin, Hui Jun Wen, and Yu Zhou. "Development and Application of a New Type Rock Drill with Hydraulic Rotary Cutting and Pneumatic Impacting." Applied Mechanics and Materials 152-154 (January 2012): 1373–76. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.1373.

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A new type hydraulic rotary cutting and pneumatic impacting rock drill is used to drill medium and deep hole. This rock drill is made up of three components: impact system, rotary system and dedust mechanism. The power is provided by hydraulic liquid and compressed air, and the hydraulic power is separated with the pneumatic power. The rotary system driven by hydraulic liquid transfers motion and force by its components: motor, input gear, mid-gear, revolving sheath, etc. The maximum rotary power is greater than the impact power. Compared with other drill, this new rock drill has a simple stru

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Khan, Mohammad Ayub, Suraj Singh, Om, Gunjan Gupta, and Avanish Yadav. "PARAMETER DETERMINATION OF HYDRAULIC DYNAMOMETER." International Journal of Engineering Technologies and Management Research 5, no. 2 (2020): 137–47. http://dx.doi.org/10.29121/ijetmr.v5.i2.2018.637.

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The project is basically based upon the determination of parameters of Hydraulic Dynamometer using LabVIEW. LabVIEW is the programming tool that is used for automation purposes mainly in industries. Herein, we will be judging the various parameters like Load Cell, Temperature Sensors etc, by interfacing the digital set-up with our manual set-up. The Load Cell that will be used is the S-shaped Load Cell and the various temperature sensors are used to determine temperatures like water inlet temperature, water outlet temperature, air temperature etc. After measuring these parameters we will be in

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MAHMUDDIN, MAHMUDDIN, SAMSUL KAMAL, INDARTO INDARTO, and PURNOMO PURNOMO. "FENOMENA HYDRAULIC JUMP LOOK LIKE DAN ONSET OF FLOODING DALAM PIPA VETIKAL." Jurnal Teknik Industri 12, no. 2 (2012): 182. http://dx.doi.org/10.22219/jtiumm.vol12.no2.182-191.

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Experiments have been conducted on countercurrent flow of air and water in pipe of 24 mm diameter. Flow patterns observations, measurement of the pressure gradient and film thickness conducted at water Reynolds numbers (ReL) are varied 322, 465, 630 and 709 combined to injectedair with velocity from 1.845 m/s to 6.148 m/s at a distance of 400 mm, 1600 mm and 2200 mm from the water inlet. The data showed that the pressure gradient and film thicknessdid not increase appreciably until just before the onset of flooding. Otherwise, when flooding conditions wave propagation in surface the film flow

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Chandra Shah, Mahesh. "Modelling the Velocity Distribution around the Hydraulic Structure." Mathematical Statistician and Engineering Applications 71, no. 1 (2022): 401–7. http://dx.doi.org/10.17762/msea.v71i1.2131.

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Intense pressure and velocity oscillations, as well as extensive air entrainment, make the investigation of the hydraulic leap created in stilling basins very difficult. Its intricacy, coupled with the real-world need for stilling basins to dissipate energy, puts physical modelling front and center. Despite stilling basins' essential role in engineering, bibliographic research has often focused primarily on the more familiar case of the classical hydraulic leap. Thus, a physical model of a typical USBR II stilling basin was used to investigate the features of the hydraulic leap in this work. U

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Shi, Haotian, Dian Huo, Hongpeng Zhang, et al. "An Impedance Sensor for Distinguishing Multi-Contaminants in Hydraulic Oil of Offshore Machinery." Micromachines 12, no. 11 (2021): 1407. http://dx.doi.org/10.3390/mi12111407.

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The cleanliness of hydraulic oil can reflect the service life of the oil and the wear state of hydraulic machinery. An impedance sensor is proposed to distinguish multi-contaminants in hydraulic oil. The impedance sensor has two detection modes: the inductance-resistance mode is used to detect metal debris, and the capacitance mode is used to distinguish water droplets and air bubbles. By adding a built-in silicon steel strip and an external silicon steel strip with high magnetic permeability, the distribution area, strength, and uniformity of the magnetic field are enhanced to improve the det

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Yuan, Yang, Neng Zhu, Haizhu Zhou, and Hai Wang. "A New Model Predictive Control Method for Eliminating Hydraulic Oscillation and Dynamic Hydraulic Imbalance in a Complex Chilled Water System." Energies 14, no. 12 (2021): 3608. http://dx.doi.org/10.3390/en14123608.

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To enhance the energy performance of a central air-conditioning system, an effective control method for the chilled water system is always essential. However, it is a real challenge to distribute exact cooling energy to multiple terminal units in different floors via a complex chilled water network. To mitigate hydraulic imbalance in a complex chilled water system, many throttle valves and variable-speed pumps are installed, which are usually regulated by PID-based controllers. Due to the severe hydraulic coupling among the valves and pumps, the hydraulic oscillation phenomena often occur whil

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Fanton, Ana Clara, and Craig Brodersen. "Hydraulic consequences of enzymatic breakdown of grapevine pit membranes." Plant Physiology 186, no. 4 (2021): 1919–31. http://dx.doi.org/10.1093/plphys/kiab191.

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Abstract Xylella fastidiosa (Xf) is the xylem-dwelling bacterial agent associated with Pierce’s disease (PD), which leads to significant declines in productivity in agriculturally important species like grapevine (Vitis vinifera). Xf spreads through the xylem network by digesting the pit membranes (PMs) between adjacent vessels, thereby potentially changing the hydraulic properties of the stem. However, the effects of Xf on water transport vary depending on the plant host and the infection stage, presenting diverse outcomes. Here, we investigated the effects of polygalacturonase, an enzyme kno

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Khrystych, Olena, Halyna Shabanova, Alla Korohodska, and Olga Gamova. "Resource and energy saving technology of specialpurpose cements." ce/papers 6, no. 6 (2023): 1589–93. http://dx.doi.org/10.1002/cepa.2980.

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AbstractBy obtaining and studying special‐purpose building materials based on the wastes of various industrial fields it has been found that that they exhibit a complex of predefined properties, and are both hydraulic and air binding materials. Physico‐mechanical properties of such materials vary over a wide range: water‐cement ratio – 0.12 – 0.25; initial set – from 50 minutes to 1 hour 50 minutes, final set – from 2 hours 15 minutes to 3 hours 25 minutes; compressive strength after 3 days of setting – 30 – 60 MPa, compressive strength after 28 days of setting – 50 – 85 MPa. In addition, expe

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Dietrich, Ingo, Philipp Hedrich, Christian Bölling, Nicolas Brötz, Felix Geßner, and Peter F. Pelz. "Concept of a Resilient Process Chain to Control Uncertainty of a Hydraulic Actuator." Applied Mechanics and Materials 885 (November 2018): 156–69. http://dx.doi.org/10.4028/www.scientific.net/amm.885.156.

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Narrow tolerances are commonly used to control uncertainty in the production of technicalcomponents. However, narrow tolerances lead to financial expense and limit flexibility. In this paperthe concept of a resilient process chain is presented. This concept covers the product life cycle phases ofproduction and usage. It is enabled by the digitalization in mechanical engineering and offers access tovariable process windows instead of rigid tolerances. First steps of this concept are then applied to the TU Darmstadt active air spring. The active air spring can be used to increase the driving com

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Kirchhof, G., NS Jayawardane, J. Blackwell, and E. Murray. "Lime-slotting technique to ameliorate subsoil acidity in a clay soil .1. Effects on soil-pH and physical characteristics." Soil Research 33, no. 3 (1995): 425. http://dx.doi.org/10.1071/sr9950425.

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In soils with subsoil acidity, root growth of plants sensitive to acidity is restricted to surface layers resulting in reduced water and nutrient uptake and low yields of crops. In the present study, the use of the lime-slotting technique, with slots 0.15 m wide and 0.8 m deep, for providing long-term improvements of the adverse soil chemical and physical characteristics of an acid, clay soil was investigated. Lime-slotting using a rotary slotter resulted in a uniform increase in soil pH to the full depth of the slot (0.8 m), indicating a thorough mixing of the lime with the small soil fragmen

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Mihoubi, Abderrahim, Abdelkader Houam, Samir Benmoussa, et al. "A comparative study of critical failure surface in unsaturated soil slopes." MATEC Web of Conferences 394 (2024): 01005. http://dx.doi.org/10.1051/matecconf/202439401005.

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Landslides are rapid downslope movements triggered by factors such as rainfall, earthquakes, or human activity, where factors like relative permeability, air flow, and variations in hydraulic conductivity affect the mechanisms behind rainfall infiltration and landslide occurrence. This study investigates these phenomena using the finite difference method (FDM) and finite element method (FEM) in FLAC and PLAXIS software. These methods account for the coexistence of water and air, including the Two-phase flow option, in evaluating unsaturated slope stability and identifying critical failure surf

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Qiao, Jing, Guangzai Jin, Guanghui Li, Yu Wang, and Xiangling Wang. "Study on Improving the Sealing Reliability of Fluid Connector." Journal of Physics: Conference Series 2125, no. 1 (2021): 012070. http://dx.doi.org/10.1088/1742-6596/2125/1/012070.

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Abstract Aiming at the problem of sealing reliability of fluid connector products commonly used in hydraulic system, this paper studies the static seal and the sliding seal. The factors affecting the sealing such as spring force, sealing ring and life of spring are considered one by one and the sealing effect is teseted. The results showed that improved fluid connector can ensure that the hydraulic system is in the state of not even air intake or oil leakage while connecting and disconnecting at any time. The connector has been successfully applied to a certain model of launch vehicle.

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Macián-Pérez, Juan, Francisco Vallés-Morán, Santiago Sánchez-Gómez, Marco De-Rossi-Estrada, and Rafael García-Bartual. "Experimental Characterization of the Hydraulic Jump Profile and Velocity Distribution in a Stilling Basin Physical Model." Water 12, no. 6 (2020): 1758. http://dx.doi.org/10.3390/w12061758.

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The study of the hydraulic jump developed in stilling basins is complex to a high degree due to the intense velocity and pressure fluctuations and the significant air entrainment. It is this complexity, bound to the practical interest in stilling basins for energy dissipation purposes, which brings the importance of physical modeling into the spotlight. However, despite the importance of stilling basins in engineering, bibliographic studies have traditionally focused on the classical hydraulic jump. Therefore, the objective of this research was to study the characteristics of the hydraulic jum

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GUERRERO RUIZ, JUAN CARLOS, and JOSE MARIA MARTIN CIVANTOS. "JEREZ-LANTEIRA MINING COMPANY, GRANADA. ORIGIN AND HISTORY OF THE HYDRAULIC PLANT FOR THE EXPLOITATION OF COPPER ORE IN THE 19TH CENTURY." DYNA 96, no. 5 (2021): 473–77. http://dx.doi.org/10.6036/9942.

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In this article we will get to know an old hydraulic plant of a mining industry, very unique, which transformed hydraulic energy into pneumatics to supply compressed air to a copper mine and its smelter. It was located in the Granada region of the Marquesado del Zenete, and built in 1889 by the colonial European mining industry. To do this, we delve into its historical origin, and analyze this original technological project that allowed a new energy transformation system. Directed and executed by a series of engineers, metallurgists, businessmen and peasants, who through their work and will we

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Sanytsky, Myroslav, Tetiana Kropyvnytska, Roman Kotiv, Mykola Bevz, and Stanislav Fic. "Suitability of modified low carbon Roman cements for architectural restoration." E3S Web of Conferences 280 (2021): 07002. http://dx.doi.org/10.1051/e3sconf/202128007002.

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Article is devoted to the investigation of suitability of low carbon Roman cement for restoration and finishing works. The history of the development of Roman cement as a natural hydraulic binder, which was commonly used to decorate building facades in the 19th and early 20th centuries, is presented. The properties of mortars based on Roman cement make it an excellent product for architectural restoration and conservation, as they are characterized by fast setting, high porosity typical for lime mortars, high resistance to weather conditions, high initial strength. At the same time, due to the

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Hadzhishalapov, G. N., P. D. Bataeva, and A. D. Bataev. "Technologies and materials for repair, restoration and restoration of historical and cultural monuments." Herald of Dagestan State Technical University. Technical Sciences 50, no. 3 (2023): 190–96. http://dx.doi.org/10.21822/2073-6185-2023-50-3-190-196.

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Objective. The task has been set to develop materials and technologies for repair, restoration and restoration of cultural heritage objects (CHOs) - historical and cultural monuments of CHOs that meet the requirements.Method. The work uses modern methods of physical and mechanical testing of materials and structures, including destructive and non-destructive quality control methods, as well as a modern mathematical apparatus for generalizing and processing experimental and statistical data.Result. Due to the fact that the South of Russia is rich in cultural heritage, and a significant number o

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