Search Results - "Kamal, H."

Effect of graphite nanoplatelets and carbon nanofibers on rheology, hydration, shrinkage, mechanical properties, and microstructure of UHPC by Meng, Weina, Khayat, Kamal H.

“…This study evaluates the effects of two types of graphite nanoplatelet (GNP-C and GNP-M) and one type of carbon nanofiber (CNF) on rheological properties,…”
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Rheology control of ultra-high-performance concrete made with different fiber contents by Teng, Le, Meng, Weina, Khayat, Kamal H.

“…The study aims to improve flexural properties of ultra-high-performance concrete (UHPC) prepared with different steel fiber volumes by controlling the…”
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Mechanical properties of ultra-high-performance concrete enhanced with graphite nanoplatelets and carbon nanofibers by Meng, Weina, Khayat, Kamal H.

“…Effects of graphite nanoplatelets (GNPs) and carbon nanofibers (CNFs) on mechanical properties of ultra-high-performance concrete (UHPC) are investigated. A…”
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Effect of Hybrid Fibers on Fresh Properties, Mechanical Properties, and Autogenous Shrinkage of Cost-Effective UHPC by Meng, Weina, Khayat, Kamal H

“…AbstractThis paper investigates the effects of hybrid micro-macro steel and micro steel blended with synthetic fibers and of the fiber content on key…”
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Changes in rheology and mechanical properties of ultra-high performance concrete with silica fume content by Wu, Zemei, Khayat, Kamal H., Shi, Caijun

“…High silica fume content used in ultra-high performance concrete (UHPC) can increase viscosity and render agglomeration issue, leading to reduction in…”
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Understanding the role of particle packing characteristics in rheo-physical properties of cementitious suspensions: A literature review by Mehdipour, Iman, Khayat, Kamal H.

“…Interest for enhancing particle packing of the solid skeleton in concrete stems efforts to reduce the content of cementitious materials and water/admixture…”
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Proton-Based Ultrafast Magic Angle Spinning Solid-State NMR Spectroscopy by Zhang, Rongchun, Mroue, Kamal H, Ramamoorthy, Ayyalusamy

“…Protons are vastly abundant in a wide range of exciting macromolecules and thus can be a powerful probe to investigate the structure and dynamics at atomic…”
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Field performance of concrete pavement incorporating recycled concrete aggregate by Sadati, Seyedhamed, Khayat, Kamal H.

“…•Fine and coarse RCA were used to produce concrete in laboratory.•Coarse RCA was incorporated for casting pavement sections in field.•Control specimens and…”
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Effect of carbon nanotube and graphite nanoplatelet on composition, structure, and nano-mechanical properties of C-S-H in UHPC by Huang, Huanghuang, Teng, Le, Gao, Xiaojian, Khayat, Kamal H., Wang, Fazhou, Liu, Zhichao

“…This paper studied the influence of carbon nanotube (CNT) and graphite nanoplatelet (GNP) used at 0 to 0.3%, by mass of binder, on composition, structure, and…”
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On the measurement of evolution of structural build-up of cement paste with time by static yield stress test vs. small amplitude oscillatory shear test by Yuan, Qiang, Zhou, Dajun, Khayat, Kamal H., Feys, Dimitri, Shi, Caijun

“…The structural build-up of cement-based materials is often characterized by the determination of the evolution of static yield stress with time. This property…”
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Coupled effect of shrinkage-mitigating admixtures and saturated lightweight sand on shrinkage of UHPC for overlay applications by Valipour, Mahdi, Khayat, Kamal H.

“…•Autogenous shrinkage mitigation of ultra-high performance concrete was investigated.•Total shrinkage mitigation of ultra-high performance concrete was…”
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Viscosity modifying agents: Key components of advanced cement-based materials with adapted rheology by Bessaies-Bey, Hela, Khayat, Kamal H., Palacios, Marta, Schmidt, Wolfram, Roussel, Nicolas

“…Viscosity modifying agents (VMAs) are essential ingredients for the production of flowable cement-based materials. This paper presents an overview of commonly…”
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Fiber orientation effects on ultra-high performance concrete formed by 3D printing by Arunothayan, Arun R., Nematollahi, Behzad, Ranade, Ravi, Bong, Shin Hau, Sanjayan, Jay G., Khayat, Kamal H.

“…Despite the growing interest in 3D concrete printing, its current progress is limited by reinforcing methods. Inclusion of steel fibers is a potential…”
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Effect of welan gum and nanoclay on thixotropy of UHPC by Teng, Le, Zhu, Jiang, Khayat, Kamal H., Liu, Jiaping

“…This study evaluates the effect of welan gum (WG) and nanoclay (NC) on thixotropy of ultra-high-performance concrete (UHPC) matrix made with 0.20…”
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How do concrete rheology, tribology, flow rate and pipe radius influence pumping pressure? by Feys, Dimitri, Khayat, Kamal H., Khatib, Rami

“…Finding the critical factors that influence the pressure during pumping of concrete has been investigated for years. From fluid mechanics, the relationship…”
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Debonding test method to evaluate bond strength between UHPC and concrete substrate by Valipour, Mahdi, Khayat, Kamal H.

“…The use of the pull-off test to evaluate the interfacial bond strength between substrate concrete and bonded materials can result in failure of the concrete…”
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An overview on the effect of internal curing on shrinkage of high performance cement-based materials by Liu, Jianhui, Shi, Caijun, Ma, Xianwei, Khayat, Kamal H., Zhang, Jian, Wang, Dehui

“…•Internal curing (IC) material is divided into two categories based on the water absorbing mechanism.•The effect of (IC) on autogenous shrinkage is explained…”
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Avoiding inaccurate interpretations of rheological measurements for cement-based materials by Wallevik, Olafur H., Feys, Dimitri, Wallevik, Jon E., Khayat, Kamal H.

“…Rheology is a high quality tool to evaluate the effect of variations in constituent materials and mixture proportions on fresh properties of cement-based…”
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Changes in rheology of self-consolidating concrete induced by pumping by Feys, Dimitri, De Schutter, Geert, Khayat, Kamal H., Verhoeven, Ronny

“…Pumping is an easy and flexible process to place concrete inside a formwork. Many studies have recently been performed to understand and optimize the pumping…”
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Mechanisms affecting viscosity of cement paste made with microfines of manufactured sand by Zhu, Jiang, Liu, Jiaping, Khayat, Kamal H., Shu, Xin, Ran, Qianping, Li, Zhen

“…Viscosity of cement-based materials incorporating manufactured sand is affected by the content and physical properties of the microfines in the sand. However,…”
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