Promkotra, S., Trakoolngam, K., & Kangsadan, T. (2018). Compressive Strength of Fired-Clay Brick with Variations in Composition of Rice Husk Ash Compared with Ancient Bricks in Dvāravatī Period, Northeast Thailand. In Aguilar, R., Torrealva, D., Moreira, S., Pando, M.A., & Ramos, L.F. (Eds.). Structural Analysis of Historical Constructions. RILEM Bookseries. (pp. 2359-2367), Vol. 18. Cusco, Peru: Springer.

Srikern, N., & Trakoolngam, K. (2018). Slope Stability Assessment and Stabilization Design along the Spillway of Prongkhunphet Dam, Chaiyaphum Province. Proceedings of the 9th Engineering, Science, Technology and Architecture Conference 2017 (ESTACON2017), 7 September 2018, Rajamangala University of Technology Isan, Khon Kaen Campus, Thailand. (pp. 1-7 in Thai).

Thuennadee, P., & Trakoolngam, K. (2017). A simplified method for estimating coefficient of earth pressure at rest (K0) in cohesive soils. Proceedings of the 7th International Conference on Geotechnique, Construction Materials and Environment (GEOMATE). Tsu, Mie, Japan: The GEOMATE International Society.

Trakoolngam, K., & Promkotra, S. (2017). Compressive mechanical behavior of red loess/black-rice husk ash composite material under variations of firing temperature. Suranaree Journal of Science and Technology, 23(4): 401-407

Bamrungkiat, N., Trakoolngam, K., and Wongmaket, S. (2017). Evaluation of the Efficiency of Compacted Soil Improvement by Drilling and Cement-Bentonite Grouting around the New Spillway at Lam Pao Dam, Kalasin Province. Proceedings of the 8th Engineering, Science, Technology and Architecture Conference 2017 (ESTACON2017), 21 July 2018, North Eastern University, Khon Kaen, Thailand. (pp. 1-7 in Thai).

Trakoolngam, K., & Promkotra, S. (2016). Nam Phong Sediments for manufacturing of fired-clay bricks in the Northeast of Thailand. Proceedings of the Thematic Session “Geoscience for the Society”, 52nd CCOP Annual Session, 30 October - 2 November, Bangkok, Thailand.

Trakoolngam, K. (2016). Strength of fired-clay blocks from Lower Nam Phong sediments with variations in composition and firing temperature. For the Doctoral Degree in Geotechnology. Department of Geotechnology, Khon Kaen University, Khon Kaen, Thailand.

Trakoolngam, K. (2016). Mechanical Behavior of Fired-Clay Bricks from Stream Sediments under Uniaxial Compressive Loading. Key Engineering Materials, 690, 252-258.

Wannakao, L., Sukplum, W., Youngme, W., Wannakao, P., & Trakoolngam, K. (2014). Correlation Between Gas and Water Permeabilities of the Namphong Formation Sandstones and their Factor Affecting. Proceedings of the 8th Asian Rock Mechanic Symposium. Sapporo, Japan.

Trakoolngam, K., Pimpa, T., & Phonsri, T. (2013). Mathematical evaluation of grouting effectiveness in fractured rock mass. Proceedings of the Fourth Thailand Symposium on Rock Mechanics, (pp. 153-164). January 24-25, Im Poo Hill Resort, Wang Nam Keaw, Nakhon Ratchasima, Thailand.

Wannakao, L., Sukplum, W., Wannakao, P., & Trakoolngam, K. (2013). Experimental assessment of the anisotropic permeability of Sandstone, Nam Phong Formation Loei-Petchabun Fold Belt by gas flowing under confining pressure. Proceedings of the 4th Thailand Symposium on Rock Mechanics, (pp. 153-164.). January 24-25, Im Poo Hill Resort, Nakhon Ratchasima, Thailand: Suranaree University.

Trakoolngam, K. (2009). Determination of the mechanical-hydraulic coupled behavior of the Phu Thok sandstone: A dual-porosity approach. In Fuenkajorn, K. (Ed.). Proceedings of the 2nd Thailand Rock Mechanics Symposium, (pp 219-234). March, 12-13, Chonburi, Thailand.

Taron, J., Min, K.-B., Yasuhara, H., Trakoolngam, K.K., & Elsworth, D. (2006). Numerical simulation of coupled thermo-hydro-chemo-mechanical processes through the linking of hydrothermal and solid mechanics codes. Proceedings of the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), Vol. 1 (pp. 268-276). June 17-21, Golden, Colorado: American Rock Mechanics Association.

Trakoolngam, K. (2005). The Effects of Wetting Saturation on Sand Production in Wells. A Thesis for the Master Degree in Geo-environmental Engineering. Department of Geo-environmental Engineering, The Pennsylvania State University, Pennsylvania, USA.

Trakoolngam, K. (1999). Sedimentary Characteristics of the Sao Khua Formation at Southern Phu Phan Range, Thailand. A senior thesis required for the completion of the BSc in Geology, Department of Geology, Chulalongkorn University, Bangkok.