The support from Project Management Unit 3 (PMU3) under the Ministry of Public Works and Transport (MPWT), Cambodia, is highly appreciated. Special thanks go to H.E Pheng Sovicheano, Secretary of State, MPWT, Cambodia for his guidance and kind support during the report development. Sardar S. Ahmed, International Material Engineer, Korea Consultants International, contributed to the study by providing necessary information regarding the Vetiver grass source and its availability in Cambodia. The

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... ooperation and logistic support of the Department of Civil Engineering and the Directorate of Bureau of Research, Testing and Consultation, BUET, were indispensable. Samira Tasnim Progga, Research Associate, Department of Civil Engineering, BUET, provided strong contribution in the preparation of this knowledge product. Finally, the timely publication of this study was made possible by Marie France B. Balawitan's valuable coordination and administrative support.