Strain localization of reinforced alkali-activated concrete under corrosion using digital image correlation

Date of Publication


Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Civil Engineering with Spec in Construction Technology & Management

Subject Categories

Civil Engineering


Gokongwei College of Engineering


Civil Engineering

Thesis Adviser

Jason Maximino C. Ongpeng

Defense Panel Chair

Ronaldo S. Gallardo

Defense Panel Member

Bryan Josef T. Medrano

Richard M. De Jesus


Ordinary port land cement (OPC) is one of the most commonly used material in the construction industry. However, its production produces harmful pollutants that largely contribute to global greenhouse emissions, as well as consumes a significant amount of natural resources such as limestone. Studies have found alkali-activated concrete (AAC) to be viable alternative for cement, and one of the greatest advantages of AAC against OPC is it corrosion resistance.

In this study, the strain localization of reinforced alkali-activated concrete (AAC) with low-calcium coal fly ash (CFA) and ordinary port land cement (OPC) concrete beams under flexural bending tests with cyclic load has been investigated through digital image correlation (DIC) technique. The strain values obtained from both concrete types were compared and it was concluded that AAC strains are consistently higher than that of OPC

Prior to testing the beams, compression tests were conducted on cylindrical samples of the two concrete types wherein it was found that both AAC and OPC are both ductile.

Furthermore, the sensitivity of DIC and conventional strain gauges in measuring the strain for both AAC and OPC was investigated, and it was found that both techniques are sensitive for OPC while otherwise for AAC due to strain localization. The strain localization of AAC may be linked to its ductile characterization.

Abstract Format






Accession Number


Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

xvi, 149 leaves : illustrations (some color) ; 30 cm.


Building materials; Portland cement

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