Search Results - "Nejad Ghafar, Ali"

Facile Synthesis of Graphene from Waste Tire/Silica Hybrid Additives and Optimization Study for the Fabrication of Thermally Enhanced Cement Grouts by Berktas, Ilayda, Ghafar, Ali Nejad, Fontana, Patrick, Caputcu, Ayten, Menceloglu, Yusuf, Okan, Burcu Saner

“…This work evaluates the effects of newly designed graphene/silica hybrid additives on the properties of cementitious grout. In the hybrid structure, graphene…”
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Synergistic Effect of Expanded Graphite-Silane Functionalized Silica as a Hybrid Additive in Improving the Thermal Conductivity of Cementitious Grouts with Controllable Water Uptake by Berktas, Ilayda, Nejad Ghafar, Ali, Fontana, Patrick, Caputcu, Ayten, Menceloglu, Yusuf, Saner Okan, Burcu

“…Recently, a growing demand for geothermal applications has led to the exploitation of energy efficiently by developing grouting materials in the borehole…”
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Specific heat and excess heat capacity of grout with phase change materials using heat conduction microcalorimetry by Pushp, Mohit, Arun Chaudhari, Ojas, Vikegard, Peter, Blomqvist, Per, Lönnermark, Anders, Nejad Ghafar, Ali, Hedenqvist, Mikael

“…Microencapsulated phase-change-materials (PCMs) incorporated in cementitious grout can be used as a source of energy in an underground thermal energy storage…”
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Development of advanced materials guided by numerical simulations to improve performance and cost-efficiency of borehole heat exchangers (BHEs) by Badenes, Borja, Sanner, Burkhard, Mateo Pla, Miguel Ángel, Cuevas, José Manuel, Bartoli, Flavia, Ciardelli, Francesco, González, Rosa M., Ghafar, Ali Nejad, Fontana, Patrick, Lemus Zuñiga, Lenin, Urchueguía, Javier F.

“…One promising way to improve the efficiency of borehole heat exchangers (BHEs) in shallow geothermal applications is to enhance the thermal properties of the…”
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Laboratory and numerical study on innovative grouting materials applicable to borehole heat exchangers (BHE) and borehole thermal energy storage (BTES) systems by Javadi, Hossein, Urchueguía, Javier F., Badenes, Borja, Mateo, Miguel Á., Nejad Ghafar, Ali, Chaudhari, Ojas Arun, Zirgulis, Giedrius, Lemus, Lenin G.

“…In this study, a laboratory-scale prototype of a borehole field has been designed and built to assess various innovative grouting products in a fully…”
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Development of dynamic grouting under laboratory and field conditions by Zirgulis, Giedrius, Nejad Ghafar, Ali, Chaudhari, Ojas Arun

“…When it comes to underground structures, water ingress from the surrounding formations leads to several environmental, economic and sustainability issues. To…”
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On using the thin fluid-layer approach at ultrasonic frequencies for characterising grout propagation in an artificial fracture by Place, Joachim, Ghafar, Ali Nejad, Malehmir, Alireza, Draganovic, Almir, Larsson, Stefan

“…Grouting the fractures encountered when constructing underground facilities is of primary importance for environmental, safety and economic reasons. The…”
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Silanization of SiO2 Decorated Carbon Nanosheets from Rice Husk Ash and Its Effect on Workability and Hydration of Cement Grouts by Berktas, Ilayda, Chaudhari, Ojas, Ghafar, Ali Nejad, Menceloglu, Yusuf, Okan, Burcu Saner

“…Rice husk ash (RHA) having a porous sructure and a high amount of amorphous silica nanoparticles (4 nm) decorated on the surface of carbon nanosheets is a…”
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Synergistic effect of expanded graphite-silane functionalized silica as a hybrid additive in improving the thermal conductivity of cementitious grouts with controllablewater uptake by Berktas, Ilayda, Ghafar, Ali Nejad, Fontana, Patrick, Caputcu, Ayten, Menceloglu, Yusuf, Okan, Burcu

“…Recently, a growing demand for geothermal applications has led to the exploitation of energy efficiently by developing grouting materials in the borehole…”
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Silanization of SiO 2 Decorated Carbon Nanosheets from Rice Husk Ash and Its Effect on Workability and Hydration of Cement Grouts by Berktas, Ilayda, Chaudhari, Ojas, Ghafar, Ali Nejad, Menceloglu, Yusuf, Okan, Burcu Saner

“…Rice husk ash (RHA) having a porous sructure and a high amount of amorphous silica nanoparticles (4 nm) decorated on the surface of carbon nanosheets is a…”
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Temperature evolution around four laboratory-scale borehole heat exchangers grouted with phase change materials subjected to heating–cooling cycles: An experimental study by Žirgulis, Giedrius, Javadi, Hossein, Chaudhari, Ojas Arun, Ghafar, Ali Nejad, Fontana, Patrick, Sanner, Burkhard, Urchueguía, Javier F., Badenes, Borja, Castell, José Manuel Cuevas, Shuster, Michael

“…This article presents the experimental results from a unique laboratory test-setup used to comparative study of heat transfer conditions in borehole heat…”
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Development of dynamic grouting under laboratory and field conditions by Zirgulis, Giedrius, Nejad Ghafar, Ali, Chaudhari, Ojas Arun

“…When it comes to underground structures, water ingress from the surrounding formations leads to several environmental, economic and sustainability issues. To…”
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An Experimental Approach to the Development of Dynamic Pressure to Improve Grout Spread by Ghafar, A. N., Mentesidis, A., Draganovic, A., Larsson, S.

“…Dynamic grouting is one of the methods to improve grout spread in rock that have been investigated since 1985. The results were promising, but all tests were…”
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Uncertainties in Grout Penetrability Measurements; Evaluation and Comparison of Filter pump, Penetrability Meter and Short Slot by Nejad Ghafar, A., Ali Akbar, S., Al-Naddaf, M., Draganovic, A., Larsson, S.

“…To measure grout penetrability in fractured hard rock, various measuring instruments have been developed over the years. Penetrability meter and Filter pump…”
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Numerical, Experimental and Analytical Studies on Fluid Flow through a Marsh Funnel by Sadrizadeh, S, Ghaffar, AN, Halilovicc, A., Hokansson, U.

“…This paper presents the application of computational fluid dynamics technique in civil and underground industries to evaluate fluid behaviour in a Marsh…”
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