CIVIL & ENVIRONMENTAL ENGINEERING

Kalehiwot N. Manahiloh

Ph.D., Washington State University

Assistant Professor


Office: 360G DuPont Hall
Phone: 302-831-2485
Fax: 302-831-3640
Email: knega@udel.edu
Curriculum Vitae:  view
Web Page:  http://sites.udel.edu/knegagroup/

[ Short Bio | Education | Awards | Select Publications | Courses ]

Short Bio

Dr. Kalehiwot (Kaleh) 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 completed a 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 research interests include (1) Experimental Unsaturated Soil Mechanics, (2) Micro-geo-mechanics, (3) Nondestructive Evaluation of Geomaterials, and (4) Laboratory, Field, and Numerical evaluation of soil-structure systems. 

Manahiloh teaches geotechnical engineering at the undergraduate and graduate levels. He also serves as Undergraduate Civil Engineering Curriculum Committee member, Undergraduate Coordinator for the Geotechnical group in the Civil Engineering program, and advises undergraduate and graduate students. Manahiloh is a member of the American Society of Civil Engineers, the Ethiopian Society of Civil Engineers, United States Universities Council on Geotechnical Education and Research, and American Geophysical Union. Additionally, Manahiloh serves as the administrator of the Washington Center for X-ray and Imaging Technology (WACXIT). He is a member in the ASCE-GI's Unsaturated Soils and Computational Geotechnics Committees. He is also a “friend” to TRB’s Committee on engineering behavior of unsaturated soils.

Other research interests include:
Ground improvement, Image processing, and Soil physics.


Education

2013: Ph.D., Washington State University
2009: M.Sc., Addis Ababa University
2004: B.Sc., Addis Ababa University

Honors and Awards

Spring 2016: Professional Engineer (P.E.) Award, Department of Civil and Environmental Engineering, University of Delaware.
2013-2014: John Roberson Outstanding Dissertation Award, Department of Civil and Environmental Engineering, Washington State University.
Spring 2013: Civil and Environmental Engineering Scholarship - Awarded by Washington State University
Spring 2013: S.K. Bhagat Excellence Award - Awarded by Washington State University
Fall 2012: Civil and Environmental Engineering Scholarship - Awarded by Washington State University
2012-2013: Nomination for Outstanding Teaching Assistant, College of Engineering and Architecture, Washington State University
2012-2013: Outstanding Teaching Assistant, Department of Civil and Environmental Engineering, Washington State University
2006-2009: Full Scholarship for M.Sc. Study - Awarded by Gondar City Municipality Office
1998: Very Great Distinction - Ethiopian School Leaving Certificate Examination

Select Publication

Publications with Students - Indicated with * following students' names.

26 - 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 geotechnologyDOI: 10.1007/s40515-017-0046-6.

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.

12 - Kadivar, M.*, Manahiloh, K.N., Kaliakin, V.N., and Shenton, H. (2018). “Assessment of Dynamic Load Allowance for Buried Culverts.” IFCEE 2018, Orlando, FL. In Press.

11 - Abera, K.*, Manahiloh, K.N., and Motalleb Nejad, M.* (2018). “Global Segmentation Algorithm for Partially Saturated Granular Geomaterials.” IFCEE 2018, Orlando, FL. In Press.

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.

- Motalleb Nejad M.*, and Manahiloh K.N. (2017).  “Investigating the role of soil fabric in unsaturated soils.” Proceedings of Geotechnical Frontiers 2017 conference, pp. 595-605, DOI: http://dx.doi.org/10.1061/9780784480472.063.

- 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.Proceedings of Geotechnical Frontiers 2017 conference, pp. 659-668, DOI: http://dx.doi.org/10.1061/9780784480472.070.

- Jin J., Abera K.*, Imhoff P., and Manahiloh K.N. (2017).  “Experimental investigation of the effects of biochar on the hydraulic conductivity of soils.Proceedings of Geotechnical Frontiers 2017 conference, pp. 549-558, DOI: http://dx.doi.org/10.1061/9780784480434.060.

- 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.

- 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.

- 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.

- 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.

- 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.


Courses Taught

2018-2019
Fall CIEG320 Soil Mechanics
Spring CIEG628 Ground Improvment Methods
Spring CIEG428 Ground Improvment Methods
 
2017-2018
Fall CIEG320 Soil Mechanics
Spring CIEG625 Unsaturated Soil Mechanics
Spring CIEG425 Unsaturated Soil Mechanics
 
2016-2017
Fall CIEG320 Soil Mechanics
Spring CIEG628 Ground Improvement Methods
Spring CIEG428 Ground Improvement Methods
 
2015-2016
Fall CIEG320 Soil Mechanics
Spring CIEG625 Unsaturated Soil Mechanics
Spring CIEG425 Unsaturated Soil Mechanics
 
2014-2015
Fall CIEG625 Unsaturated Soil Mechanics
Spring CIEG628 Ground Improvement Methods
Spring CIEG428 Ground Improvment Methods

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