Document Types
Paper Presentation
School Name
Juan Sumulong Memorial Junior College
Track or Strand
Science, Technology, Engineering, and Mathematics (STEM)
Research Advisor (Last Name, First Name, Middle Initial)
Robles, Jemaima, M.
Start Date
23-6-2025 1:30 PM
End Date
23-6-2025 3:00 PM
Zoom Link/ Room Assignment
Y504
Abstract/Executive Summary
Hydraulic water-stop cement is a commonplace solution to most concrete problems caused by natural disasters in the Philippines, especially flooding in low-lying areas. However, rising expenses and environmental concerns due to surging carbon footprints necessitate the development of a cost-effective and eco-friendly alternative. Aligned with SDGs 9, 11, 12, and 13, this study developed HydroFortera: an effective, cost-effective, and eco-friendly geopolymer water-stop cement formulated using waste by-products such as fly ash, rice husk ash, and coconut fiber, along with alkaline activators and additives. Alkaline-to-binder ratios of 0.40, 0.45, and 0.50 were tested for various properties to determine the optimal ratio for each. Tested under ASTM testing methods, HydroFortera exhibited excellent slant shear bond strength (SSBS), relatively fast setting time (ST), and a remarkably low water absorption (WA) after the 7-day sealed curing process, with compressive strength (CS) values assessed as suitable for non-load bearing repair materials by industry professionals. Significant differences between the aforementioned ratios’ properties appeared, while WA values remained similar throughout. The optimal alkaline-to-binder ratio for each property, then, is 0.50 for CS, 0.45 for SSBS, 0.50 for initial ST, 0.45 for final ST, and 0.45 for WA. Comparative analyses further confirmed HydroFortera's cost-effectiveness, with total cost savings reaching 78% of hydraulic water-stop cement costs, and eco-friendliness, presenting much lower environmental impact and positive environmental contributions when tested using the OpenLCA software and Ecoinvent database. Through this study, an innovative concrete repair material was successfully developed, offering disaster-prone communities a cost-effective and eco-friendly solution for infrastructure repairs.
Keywords
geopolymers; water-stop cement; flood damage repair; eco-friendly engineering; cost-effective materials
Research Theme (for Paper Presentation and Poster Presentation submissions only)
Materials Engineering (MEN)
Initial Consent for Publication
yes
Statement of Originality
yes
HydroFortera: An Experimental Study on the Development of an Effective and Cost-Effective Eco-Friendly Geopolymer Water-Stop Cement
Hydraulic water-stop cement is a commonplace solution to most concrete problems caused by natural disasters in the Philippines, especially flooding in low-lying areas. However, rising expenses and environmental concerns due to surging carbon footprints necessitate the development of a cost-effective and eco-friendly alternative. Aligned with SDGs 9, 11, 12, and 13, this study developed HydroFortera: an effective, cost-effective, and eco-friendly geopolymer water-stop cement formulated using waste by-products such as fly ash, rice husk ash, and coconut fiber, along with alkaline activators and additives. Alkaline-to-binder ratios of 0.40, 0.45, and 0.50 were tested for various properties to determine the optimal ratio for each. Tested under ASTM testing methods, HydroFortera exhibited excellent slant shear bond strength (SSBS), relatively fast setting time (ST), and a remarkably low water absorption (WA) after the 7-day sealed curing process, with compressive strength (CS) values assessed as suitable for non-load bearing repair materials by industry professionals. Significant differences between the aforementioned ratios’ properties appeared, while WA values remained similar throughout. The optimal alkaline-to-binder ratio for each property, then, is 0.50 for CS, 0.45 for SSBS, 0.50 for initial ST, 0.45 for final ST, and 0.45 for WA. Comparative analyses further confirmed HydroFortera's cost-effectiveness, with total cost savings reaching 78% of hydraulic water-stop cement costs, and eco-friendliness, presenting much lower environmental impact and positive environmental contributions when tested using the OpenLCA software and Ecoinvent database. Through this study, an innovative concrete repair material was successfully developed, offering disaster-prone communities a cost-effective and eco-friendly solution for infrastructure repairs.
https://animorepository.dlsu.edu.ph/conf_shsrescon/2025/paper_men/3
