Christian R. Orozco

PhD Field Engineering for the Environment, 2024, Hokkaido University, Japan
PhD Engineering and Technology (Civil), 2024, Thammasat University, Thailand
MSc Environmental Engineering, 2014, University of the Philippines Diliman
BSc Civil Engineering, cum laude, 2010, University of the Philippines Diliman

Link to Publication Profiles:
Scopus Profile
Google Scholar

Selected Journal Publications

Orozco, C., Tangtermsirikul, S., Sugiyama, T., & Babel, S. (2024). Unraveling the environmental and economic impacts of fly ash utilization on mass concrete considering industry practices. Journal of Materials Cycle and Waste Management, 26, 1403-1417. https://doi.org/10.1007/s10163-024-01893-y

Orozco, C., Babel, S., Tangtermsirikul, S., & Sugiyama, T. (2024). Comparison of environmental impacts of fly ash and slag as cement replacement materials for mass concrete and the impact of transportation. Sustainable Materials and Technologies, 39, e00796 https://doi.org/10.1016/J.SUSMAT.2023.E00796

Orozco, C. R., Tangtermsirikul, S., Sugiyama, T., & Babel, S. (2023). Comparative environmental assessment of low and high CaO fly ash in mass concrete mixtures for enhanced sustainability : Impact of fly ash type and transportation. Environmental Research, 234, 116579. https://doi.org/10.1016/j.envres.2023.116579

Orozco, C., Tangtermsirikul, S., Sugiyama, T., & Babel, S. (2023). Examining the endpoint impacts, challenges, and opportunities of fly ash utilization for sustainable concrete construction. Scientific Reports 2023 13:1, 13(1), 1–13. https://doi.org/10.1038/s41598-023-45632-z

Orozco, C. R., Castro, K. D. L. T., & De Boda, M. M. T. (2023). Valorization of waste mill tailings from small-scale mining through geopolymerization: strength, durability, and heavy metal leaching potential. Journal of Soils and Sediments. https://doi.org/10.1007/s11368-023-03475-1

Orozco, C. R., Babel, S., Tangtermsirikul, S., & Sugiyama, T. (2023). Understanding the environmental, economic, and social impact of fly ash utilization on early-age high-strength mass concrete using life cycle analysis. Materials Today: Proceedings. https://doi.org/10.1016/j.matpr.2023.03.141

Orozco, C., Babel, S., & Tangtermsirikul, S. (2023). Role of waste materials to a sustainable concrete construction in the Philippines. AIP Conference Proceedings, 2785(1). https://doi.org/10.1063/5.0147969

Orozco, C. R., & Urbino, I. J. A. (2022). Self-Healing of Cracks in Concrete using Bacillus cibi with Different Encapsulation Techniques. Journal of Engineering and Technological Sciences, 54(3), 1–12. https://doi.org/10.5614/j.eng.technol.sci.2022.54.3.5

Orozco, C., & Madriaga, D. (2021). Assessment of Green Roofs in the Philippines using Sustainability Indicators and Cost-Benefit Analysis. International Journal of Environmental Studies. https://doi.org/10.1080/00207233.2021.1957623

Macasieb, R. Q., Orozco, C. R.., & Resurreccion, A. C. . (2021). Application of Coupled HEC-HMS and US EPA WASP for Transport Modelling of Mercury In The Mining-Impacted Ambalanga River. ASEAN Engineering Journal, 11(3), 158-176. https://doi.org/10.11113/aej.v11.17052

Corpuz, M. P. L. J., Rosei Monzon, M. T., Orozco, C. R., & Germar, F. J. (2021). Effects and Optimization of Aggregate Shape, Size, and Paste Volume Ratio of Pervious Concrete Mixtures. Philippine Engineering Journal, 42(2), 25–40. https://www.journals.upd.edu.ph/index.php/pej/article/view/8495

R Macasieb, C Orozco and A Resurreccion (2021). “Heavy metal contamination assessment and source apportionment analysis using multivariate methods in surface sediments of mining-impacted rivers in Benguet”. International Journal of Environmental Studies. https://doi.org/10.1080/00207233.2020.1802953 Published 5 Aug 2020.

MB Diola and C Orozco. “Improved Removal of Copper Ions From Aqueous Solution Using NaOH-Pretreated Coco Peat”. Special Issue of ASEAN Engineering Journal Part C Volume 4, Number 1. (2015) pp 93-103. Print

C Orozco and SD Maningas. “Industry Perception on the Benefits of Construction Waste Management Strategies in the Philippines.” Philippine Engineering Journal Volume 35, Number 2 (2014) pp 19-28. Print

Selected Projects

Environmental assessment of utilizing recycled aggregates and industrial wastes for concrete application in the Philippines Project Leader. Funding: Office of the Vice Chancellor for Research and Development (Project No. 242424 PhDIA YEAR 1). December 2024 – 2025

Policy Dialogue and Network Building of Multi-Stakeholders on Integrated Domestic Wastewater Management in ASEAN Countries. Assistant Project Leader. 2018- 2020 (Focal Point: NWRB; Funding: National Institute for Environmental Strategies, Japan); Dec 2018-Oct 2020

BIOCONCRETE: Self-Healing of cracks in concrete using bacteria with different encapsulation techniques. Project Leader. January – December 2020

Philippine ElectroChemical Arsenic Remediation (ECAR): Implementation of a Novel Technology to Affordably and Effectively Remove Arsenic from Contaminated Philippine Groundwaters. Project Staff (CHED PCARI Project with University of California Berkeley); June 2018-Dec 2020

Proposed Water Conservation and Efficiency Measures in UP Diliman. Project Leader. September 2017 – August 2018

Study on Weathering Steel in the Philippines. Project Staff. Jan 2018-Sept 2019 (MOA: JFE Steel and NEC);

Comprehensive Land Use and Development Plan for Atimonan. Infrastructure Consultant. May – November 2018.

Environmental Impact Assessment of Various Bypass Road Projects in Isabela, Ilocos, Palawan, Marinduque, Quezon City. Technical Expert. November 2017 – Jan 2018

Design and Build of Sewage Treatment Plant for CIANNAT Corporation. January 2018 – April 2018

Feasibility Study of the Proposed Cabacanan Small Reservoir Irrigation Project, Ilocos Norte. Technical Expert. November 2017 – January 2018

Feasibility Study of the Proposed Manat National Irrigation Project, Montevista, Compostela Valley. Technical Expert. November 2017 – January 2018

Resource Assessment of Potential Supply from Surface Water and Spring Water for the Municipality of Candijay, Bohol. Water Quality Expert. June-December 2017
Water Quality Monitoring and Composting Guide for Teachers and Youth Leaders. October-November 2017

Review of the Boracay Island Water Company Inc. 2016 Rate Rebasing. Technical Expert for Water and Sewerage Works ; Contracting Parties: Tourism Infrastructure and Enterprise Zone Authority (TIEZA) and UP National Engineering Center. October 2016 – Oct 2018

Development of the Revisions to the National Building Code of the Philippines and its IRR to Mainstream Disaster Risk Reduction. Building Materials Expert; Contracting Parties: World Bank and National Engineering Center. August 2016 – 2018

Environmental Impact Assessment Study of Field Testing Facility for the Integrated Gold-Copper Mineral Processing Pilot Plant: CAR (Benguet), EIA Preparer and Water Quality Expert, June- July, 2016

Environmental Impact Assessment Study of Field Testing Facility for the Integrated Gold-Copper Mineral Processing Pilot Plant: Bicol Region, Team Leader, EIA Preparer and Water Quality Expert, August-September, 2016

Environmental Impact Assessment Study of Field Testing Facility for the Integrated Gold-Copper Mineral Processing Pilot Plant: CARAGA (Agusan del Norte), EIA Preparer and Water Quality Expert, October – November, 2016

Resource Assessment of Potential Water Supply from Surface Water for City of Dasmariñas. Project Team Member/Consultant for Dasma Water. January-December 2016.

Review of the Sewage Treatment Plant (STP) for the New Bohol Airport. Project Team Member/Consultant of amh Philippines, December 2015 – January 2016

Environmental Impact Assessment of UP Sta. Elena Campus in Tacloban. EIA Preparer and Site Investigator, November – December 2015 (thru UP Padayon)

Design of Wastewater Management Facility for UP Sta. Elena Campus, Tacloban. Wastewater expert in the team of experts for Masterplan of the New UP Campus in Sta. Elena, February – August 2015 (thru UP Padayon)

Modeling of Fate and Transport of Heavy Metals From Source at Mining Site to Downstream Receiving Body of Waters. Project Staff Level 3, June 2013 – June 2015; Funding source: Department of Science and Technology, Philippine Government

Mobility Indices for the Assessment of Soils and Sediments Nearby Mining Sites in Agno Rivers. Research Leader/Proponent, Jan 2015 – July 2016; Funding source: UP ERDFI and UPD College of Engineering thru Faculty Research and Incentive Award

Evaluation of Strength and Environmental Benefits of Using Pervious Concrete Made From Local Philippine Cement. Research Leader/Proponent, Feb 2014 – Jun 2014; Funding source: UP ERDFI and UPD College of Engineering thru Faculty Research and Incentive Award

Rapid Condition Assessment of Major Buildings in the University of the Philippines Diliman and a Case Study for Seismic Retrofit Design of one of its Buildings. Project Team Member, April 2012 – April 2013; Funding source: Office of the Vice Chancellor for Research and Development UP Diliman

Road Applications of Cement (RACE). Project Team Member, Nov 2011 – Nov 2012; Funding source: Lafarge Cement Services Philippines, Inc. (thru UP ERDFI)

Assessment of Mak-Ban Sump Structures and Geo-Resistivity Survey. Project Team Member/Consultant, November 2012 – January 2013

Chapter Activities Award, American Concrete Institute (USA), March 2021

President’s Award, Philippine Institute of Civil Engineers, 2021 & 2022

First Place, American Concrete Institute (ACI) Eco-Concrete Competition, ACI Spring 2019 Convention, Quebec Canada.

Limcaoco Young Instructor Award for Teaching Excellence, 2013, UPD College of Engineering

Overall Champion, Introducing and Demonstrating Earthquake Engineering in Schools or IDEERS Postgraduate Division Competition, September 27, 2011 Taipei Taiwan
First Place, Overall Most Creative Architectural Design in IDEERS Graduate Category, September 27, 2011 Taipei Taiwan
Second Place, Overall Best Poster in IDEERS Graduate Category, September 27, 2011 Taipei Taiwan

Best in Research Implementation, Undergraduate Research in Construction Engineering and Management, 2010, Institute of Civil Engineering, UP Diliman

Vice-President, American Concrete Institute Philippines Chapter

Registered Civil Engineer, Professional Regulation Commission

Specialist, Environmental and Energy Engineering, Philippine Institute of Civil Engineers

American Concrete Institute (ACI, USA) Certified/Examiner:
Concrete Field Testing Technician Grade I
Aggregate Testing Technician
Concrete Strength Testing Technician
Concrete Laboratory Testing Technician
Concrete Flatwork Associate