Search Results - "Kurtis, K.E"

Quantification of NOx uptake in plain and TiO2-doped cementitious materials by Jin, Q., Saad, E.M., Zhang, W., Tang, Y., Kurtis, K.E.

“…This study brings new understanding of the interaction of nitrogen oxides (NOx) with cement-based materials, necessary for optimizing these materials for NOx…”
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Supplementary cementitious materials for mitigating degradation of kraft pulp fiber-cement composites by Mohr, B.J., Biernacki, J.J., Kurtis, K.E.

“…Kraft pulp fiber reinforced cement-based materials are being increasingly used where performance after exposure to environmental conditions must be ensured…”
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Wideband microwave characterization of alkali-silica reaction (ASR) gel in cement-based materials by Donnell, K.M., Hatfield, S., Zoughi, R., Kurtis, K.E.

“…Alkali-silica reaction (ASR) and its effect on cement-based infrastructure is an ongoing concern for ensuring long-term performance. However, it remains…”
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Effects of lithium nitrate admixture on early-age cement hydration by Millard, M.J., Kurtis, K.E.

“…Although the benefits of lithium admixtures for mitigation of alkali–silica reaction (ASR) have been well documented, the potential ancillary effects of…”
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Characterization of progressive microcracking in Portland cement mortar using nonlinear ultrasonics by Chen, X.J., Kim, J.-Y., Kurtis, K.E., Qu, J., Shen, C.W., Jacobs, L.J.

“…This paper presents the successful application of a nonlinear ultrasonic technique, nonlinear wave modulation spectroscopy (NWMS) to quantitatively track the…”
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Sulfate attack monitored by microCT and EDXRD: Influence of cement type, water-to-cement ratio, and aggregate by Naik, N.N., Jupe, A.C., Stock, S.R., Wilkinson, A.P., Lee, P.L., Kurtis, K.E.

“…X-ray microtomography (microCT) and spatially resolved energy dispersive X-ray diffraction (EDXRD) were used in combination to non-destructively monitor the…”
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Examination of the effects of LiOH, LiCl, and LiNO3 on alkali-silica reaction by COLLINS, C. L, IDEKER, J. H, WILLIS, G. S, KURTIS, K. E

“…Lithium additives have been shown to reduce expansion associated with alkali-silica reaction (ASR), but the mechanism(s) by which they act have not been…”
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Evaluation of microwave reflection properties of cyclically soaked mortar based on a semiempirical electromagnetic model by Peer, S., Kurtis, K.E., Zoughi, R.

“…Detection of chloride ingress and evaluation of its distribution and temporal movement in reinforced concrete structures is an important practical issue. Steel…”
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An electromagnetic model for evaluating temporal water content distribution and movement in cyclically soaked mortar by Peer, S., Kurtis, K.E., Zoughi, R.

“…Evaluation of water distribution and its temporal movement in cement-based materials is important for assessing cement hydration, curing, and long-term…”
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Durability of Portland-limestone cement-based materials to physical salt attack by Nadelman, E.I., Kurtis, K.E.

“…Because salt solution ingress is governed by permeability and diffusivity and because salt crystallization pressure is directly related to pore size, changes…”
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Microwave reflection and dielectric properties of mortar subjected to compression force and cyclically exposed to water and sodium chloride solution by Peer, S., Case, J.T., Gallaher, E., Kurtis, K.E., Zoughi, R.

“…Corrosion of the reinforcing steel is a major cause of damage and deterioration in reinforced concrete structures such as concrete bridge decks and columns…”
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Imaging of ASR Gel by Soft X-Ray Microscopy by Kurtis, K.E, Monteiro, P.J.M, Brown, J.T, Meyer-Ilse, W

“…The soft x-ray transmission microscope XM-1 was used to examine alkali-silicate reaction (ASR) gel morphology in an experimental investigation of the…”
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Creep of UHPC in tension and compression: Effect of thermal treatment by Garas, V.Y., Kurtis, K.E., Kahn, L.F.

“…Steel fiber-reinforced ultra-high performance concrete (UHPC) is of increasing interest for use in precast prestressed concrete highway bridge girders due to…”
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Demonstration of microwave method for detection of alkali–silica reaction (ASR) gel in cement-based materials by Donnell, K.M., Zoughi, R., Kurtis, K.E.

“…Microwave methods have previously shown success in detecting changes in moisture content and binding (e.g., bound water vs. free water) in cement-based…”
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Durability of kraft pulp fiber–cement composites to wet/dry cycling by Mohr, B.J., Nanko, H., Kurtis, K.E.

“…If pulp fiber–cement composites are to be used for exterior applications, the effect of cyclical wet/dry exposure must be known. In this research program the…”
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Microwave dielectric properties measurements of sodium and potassium water glasses by Hashemi, A., Rashidi, M., Kurtis, K.E., Donnell, K.M., Zoughi, R.

“…Dielectric properties of alkali silicates ((Na,K)2(SiO2)nO) or ‘water glasses’ are a critical input into the electromagnetic modeling of these materials, which…”
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Time to failure for concrete exposed to severe sulfate attack by Monteiro, Paulo J.M., Kurtis, Kimberly E.

“…In the 1940s, the U.S. Bureau of Reclamation (USBR) began a long-term, nonaccelerated laboratory test program to determine the influence of a variety of…”
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Microstructural and chemical effects of wet/dry cycling on pulp fiber–cement composites by Mohr, B.J., Biernacki, J.J., Kurtis, K.E.

“…The microstructural and chemical mechanisms responsible for pulp fiber–cement composite degradation during wet/dry cycling are being investigated through…”
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New method for determination of absorption capacity of internal curing agents by Johansen, N.A., Millard, M.J., Mezencevova, A., Garas, V.Y., Kurtis, K.E.

“…Accurate assessment of absorption capacity ( k) of internal curing agents is necessary to properly proportion cement-based mixtures and to measure their…”
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Characterization of entrained air voids in cement paste with scattered ultrasound by Punurai, Wonsiri, Jarzynski, Jacek, Qu, Jianmin, Kurtis, Kimberly E., Jacobs, Laurence J.

“…This research develops a technique that uses the attenuation of ultrasonic waves to characterize the average size and volume fraction of entrained air voids in…”
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