360G DuPont Hall
Newark, Delaware 19716
2013 | Ph.D. | Washington State University
2009 | M.Sc. | Addis Ababa University
2004 | B.Sc. | Addis Ababa University
Dr. Kalehiwot Nega Manahiloh is an Assistant Professor in the Department of Civil and Environmental Engineering at the University of Delaware. He graduated from Addis Ababa University, Ethiopia in 2004 with a B.Sc. degree and M.Sc. degree in Civil/Structural Engineering in 2009. Manahiloh received a Ph.D. in Civil Engineering from Washington State University (WSU) in 2013. Manahiloh received Outstanding Dissertation Award in the Department of Civil and Environmental Engineering at WSU. He joined the faculty of the University of Delaware in September 2013, as an Assistant Professor of Civil Engineering. Manahiloh’s fundamental research activities include (1) Experimental Unsaturated Soil Mechanics, (2) Micro-geomechanics, and (3) Nondestructive Characterization. Manahiloh’s applied research activities include (1) Field, laboratory, and numerical assessment of geo-structural systems, (2) Eco-friendly ground improvement methods, and (3) Application of Artificial Intelligence in geotechnical systems. Manahiloh teaches geotechnical engineering at the undergraduate and graduate levels. He serves as the undergraduate coordinator for the geotechnical group in the Civil Engineering program. He also serves in the departmental Undergraduate Education Committee. Manahiloh advises, supervises, and mentors undergraduate and graduate students.
Manahiloh is a member of the American Society of Civil Engineers (ASCE), the Ethiopian Society of Civil Engineers (ESCE), United States Universities Council on Geotechnical Education and Research (USUCGER), and American Geophysical Union (AGU). He is a serving member of ASCE-GI’s Unsaturated Soils and Computational Geotechnics Committees and TRB’s Soil and Rock Properties Committee. In addition, Manahiloh is a “friend” of TRB’s Committee on Engineering Behavior of Unsaturated Soils. Manahiloh serves as a reviewer in ASCE: International Journal of Geomechanics, ASCE: Journal of Geotechnical and Geoenvironmental Engineering, ASCE: Journal of Materials in Civil Engineering, ASCE: Journal of Infrastructure Systems, ASTM: Geotechnical Testing Journal, Journal of Engineering Geology, Journal Soil Dynamics and Earthquake Engineering, Journal of Construction and Building Materials in Civil Engineering, International Journal of Geosynthetics and Ground Engineering, TRB: Engineering Behavior of Unsaturated Soils. Manahiloh has served as an ad-hoc reviewer in the Proceedings of the 2015 International Foundations Congress and Equipment Exposition, Proceedings of the PanAm2017-UNSAT conference, Proceedings of the Geotechnical Frontiers 2017 conference.
- Infrastructure Systems
* indicates a current or former student
30 – Manahiloh K.N., Muhunthan, B., and Likos, W.J., (2014). “Effective stress and the role of liquid fabric in unsaturated granular soils.” Geomechanics from Micro to Macro: Chapter 138, eds. Kenichi Soga, Giovanna Biscontin, and Matthew Kuo, ed., CRC Press.
29 – Manahiloh K.N., and Imhoff P. (2018). “Properties of Biochar-Amended Highway Soils.” GeoStrata, Sept/Oct. 2018 Issue. In Press.
28 – Manahiloh K.N., Abera K.*, and Motalleb Nejad M.* (2018). ” A refined global segmentation of X-ray CT images for multi-phase geomaterials.” Journal of Nondestructive Evaluation. DOI: 10.1007/s10921-018-0508-y.
27 – Wells A.*, Shenton H.W., Manahiloh K.N., and Wenczel G. (2017). “Dynamic load allowance provisions for box culverts with low fill depth.” Journal of Transportation infrastructure geotechnology. https://link.springer.com/article/10.1007/s40515-017-0046-6.
26 – Motalleb Nejad, M.*, Momeni, M.S., and Manahiloh, K.N. “Reply of authors to the discussion of H. Gullu [Soil Dyn Earthq Eng 108 (2018) 203–4] on their article “Shear wave velocity and soil type micro-zonation using neural networks and geographic information system” [Soil Dyn Earthq Eng 104 (2018) 54–63].” Soil Dynamics and Earthquake Engineering. https://doi.org/10.1016/j.soildyn.2018.04.013.
25 – Kadivar M.*, Manahiloh K.N., Kaliakin V., and Shenton H.W. (2017). “Relative Assessment of Dynamic Load Allowance for Buried Box Culverts from Field testing, Two-dimensional, and Three-dimensional Finite Element Analyses.” Journal of Transportation infrastructure geotechnology. DOI: 10.1007/s40515-017-0045-7.
24 – Motalleb Nejad M.*, Momeni M.S., and Manahiloh K.N. (2018). “Shear wave velocity and soil type microzonation using Neural Networks and Geographic Information System.” Soil dynamics and earthquake engineering. 104, 54-63. DOI: 10.1016/j.soildyn.2017.10.001.
23 – Tabarsa A., Latifi N., Meehan C.L., and Manahiloh K.N. (2018). “Laboratory investigation and field evaluation of loess improvement using nanoclay – A sustainable material for construction.” Journal of Construction and Building Materials. 158, 454-463. DOI: 10.1016/j.conbuildmat.2017.09.096.
22 – Motalleb Nejad M.*, Manahiloh K.N., and Momeni M.S. (2017). “Random-effects regression model for shear wave velocity as a function of standard penetration test resistance, vertical effective stress, fines content and plasticity index.” Soil dynamics and earthquake engineering. 103(2017): 95-104. DOI: 10.1016/j.soildyn.2017.09.022.
21 – Manahiloh K.N., and Meehan C.L. (2017) “Determining the Soil Water Characteristic Curve and interfacial contact angle from microstructural analysis of X-ray CT images.” ASCE Journal of Geotechnical and Geoenvironmental Engineering. DOI: 10.1061/(ASCE) GT.1943-5606.0001677.
20 – Rashid A.S.A., Latifi N., Meehan C.L., and Manahiloh K.N. (2017). “Sustainable improvement of tropical residual soil using an environmentally friendly additive.” Geotechnical and Geological Engineering. 31(4). DOI: 10.1007/s10706-017-0265-1.
19 – Abera K.*, Manahiloh K.N., and Motalleb Nejad M.* (2017) “The Effectiveness of Global Thresholding Techniques in Segmenting Two-Phase Porous Media.” Journal of Construction and Building Materials. 142:256-267. DOI: 10.1016/j.conbuildmat.2017.03.046.
18 – Manahiloh K.N., Muhunthan B., and Likos W.J. (2016) “Microstructure based effective stress formulation for partially saturated granular soils.” ASCE International Journal of Geomechanics: Special Issues on Experimental and Computational Geomechanics for Unsaturated soils. DOI: 10.1061/(ASCE)GM.1943-5622.0000617.
17 – Motalleb Nejad M.*,&Manahiloh K.N. (2015) “A modified harmony search algorithm for the optimal design of earth walls reinforced with non-uniform geosynthetic layers.” Int. Journal of Geosynthetics and Ground Engineering, 1(4): 1-15. DOI: 10.1007/s40891-015-0039-x.
16 – Manahiloh K.N., Motalleb Nejad M.*, and Momeni M.S. (2015) “Optimization of design parameters and cost of geosynthetic-reinforced earth walls by Harmony Search Algorithm.” Int. Jour. of Geosynthetics and Ground Engineering, 1(2):1-12. DOI:10.1007/s40891-015-0017-3.
15 – Manahiloh K.N., Muhunthan B. Kayhanian M., Gebremariam S.Y. (2012). “X-ray Computed Tomography and Nondestructive Evaluation of Clogging in Porous Concrete Field Samples.” Journal of Materials in Civil Engineering, 24(8), 1103-1109.
14 – Wu M., Wen H., Muhunthan B., Manahiloh K.N. (2012). “Influence of RAP Content on the Air Void Distribution, Permeability and Modulus of the Base Layer in Recycled Asphalt Pavements.” Journal of the transportation research board, 2267, 65-71.
13 – Roopesh M.S., Manahiloh K.N., Muhunthan B., Sablani S.S. (2011). “Understanding the influence of state/phase transitions on ice recrystallization in Atlantic salmon (Salmo salar) during frozen storage.” Food Biophysics Journal, 7(1), 57-71.
Peer-reviewed and archived conference articles
12 – Kadivar, M.*, Manahiloh, K.N., Kaliakin, V.N., and Shenton, H. (2018). “Assessment of Dynamic Load Allowance for Buried Culverts.” Geotechnical special publication, IFCEE 2018, Orlando, FL. March 5-10, https://doi.org/10.1061/9780784481608.018.
11 – Abera, K.*, Manahiloh, K.N., and Motalleb Nejad, M.* (2018). “Global Segmentation Algorithm for Partially Saturated Granular Geomaterials.” Geotechnical special publication, IFCEE 2018, Orlando, FL. March 5-10, https://doi.org/10.1061/9780784481585.046 .
10 – Wells A.*, Shenton H., and Manahiloh K.N. (2017), “Investigation of Dynamic Amplification Factor for Concrete Box Culverts through Finite Element Modeling” Structures Congress 2017, April 6-8. Accepted.
9 – Motalleb Nejad M.*, and Manahiloh K.N. (2017). “Investigating the role of soil fabric in unsaturated soils.” Geotechnical special publication, Geo-Frontiers 2017 conference, pp. 595-605, DOI: http://dx.doi.org/10.1061/9780784480472.063.
8 – Motalleb Nejad M.,* Manahiloh K.N., and Meehan C.L. (2017). “Applying the techniques of microstructural image processing towards measuring interface angles in unsaturated geomaterials.” Geotechnical special publication, Geo-Frontiers 2017 conference, pp. 659-668, DOI: http://dx.doi.org/10.1061/9780784480472.070.
7 – Jin J., Abera K.*, Imhoff P., and Manahiloh K.N. (2017). “Experimental investigation of the effects of biochar on the hydraulic conductivity of soils.” Geotechnical special publication, Geo-Frontiers 2017 conference, pp. 549-558, DOI: http://dx.doi.org/10.1061/9780784480434.060.
6 – Wells A.*, Shenton H., and Manahiloh K.N. (2017), “Experimental Evaluation of Dynamic Amplification Factor for Box Culverts.” 2017 TRB annual meeting, January 8-12, Washington D.C.
5 – Wells A.*, Shenton H., and Manahiloh K.N. (2017), “Parametric investigation of factors influencing the dynamic response of buried reinforced concrete culverts.” Geotechnical and Structural Engineering Congress, pp. 648-659, DOI: 10.1061/9780784479742.054.
4 – Manahiloh K.N. and Meehan C.L. (2015). “Evolution of Interphase Contact Angle in Partially Saturated Soils Using Digital Analysis of X-ray Computed Tomography Images.” Geotechnical Special Publication, No. 256: 2092-2101.
3 – Manahiloh K.N., Muhunthan B., and Likos W.J. (2014). “Effective Stress and the Role of Liquid Fabric in Unsaturated Granular Soils.” Proceedings of the International Symposium on Geomechanics from Micro to Macro (IS-Cambridge 2014), Cambridge, UK, 863-868.
2 – Manahiloh K.N., and Muhunthan B. (2012). “Characterizing Liquid Phase Fabric of Unsaturated Specimens from X-Ray Computed Tomography Images.” Unsaturated Soils: Research and Applications, C. Mancuso, C. Jommi, and F. D’Onza, eds., Springer, Berlin Heidelberg, 71-80.
1 – Manahiloh K.N., Jaafar R., Muhunthan B., and Likos W. (2011). “Imaging and modeling the microstructure of unsaturated soils for improved prediction of macroscale response.” NSF-CMMI Research and Innovation Conference, Atlanta, Georgia.
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