Comparative Analysis of The Normal Splitting Stresses of Bio-Based Coated Reinforcements Using Experimental Studies and Finite Element Simulations

Abstract

The Philippines has been moderately vulnerable to corrosion; surface coating should be applied to prevent this problem. The main objective of this research was to develop and optimize a bio-based mixture of Pili Resin and Lime as Coating Materials. Three (3) factors were considered in choosing the best coating material: Chemical adhesion, friction, and the bearing/shear against the steel bar-concrete interface. Fortunately, both proportions of the Bio-based coating materials (50:50 and 65:35) do not have red rust formation complying with ASTM B117 but failed in terms of ASTM D 3359. Splitting failures of concrete were observed in the Unconfined Reinforced Concrete Samples. All of the steel bars (uncoated and coated) surpassed the Minimum Bond strength (NSCP 2015) by about 203% to 285%. The experiments were about 1% to 3% of the results from the ANSYS Simulations with and without the Salt Spray Test. The normal splitting strength using the bio–based and epoxy coatings were declined. However, there was no significant difference between the results. Thus, bio-based coating materials can be used as an alternative to epoxy coating materials and it was highly recommended for low-rise buildings only.