Experimental Study of Splitting Tensile Strength of Polymer Resin Grout with Fly Ash

Abstract

Polymer resin grout can be used as bonding material for grouted sleeve connections This paper presents the experimental results on the effectiveness of fly ash as micro filler to the splitting tensile strength of polymer grout. In addition, the cement grout that is usually used as bonding material had been tested for comparison. Eleven proportions, of fly ash as the filler and polymer as binder, were tested with the binder to filler volume ratios of 1:1 and 1:1.5. The test results revealed that fly ash can be used as a micro-filler material to partially replace ordinary river sand in polymer resin grout. The splitting tensile strength of the polymer grout increases with the increase of fly ash contents. However, for higher level of fly ash of more than 22%, the splitting tensile strength deteriorated. For binder: filler ratio of 1:1, the optimum fly ash content of 22% gave the maximum splitting strength of 17.62 MPa, which can be considered acceptable for producing grout with high strength bonding material.

Performance of Polyester Grouted Connector for Splicing of Reinforcement Bars

“…Traditional cement grouts, typically employed in grouted splice connectors, come with several drawbacks, such as extended curing periods and a gradual progression in strength. An emerging alternative is Polymer grout (PM) or resin mortar, a modern composite formed by blending inorganic aggregates (such as sand) with a resin binder (Raymond and Sauntson, 1987;Mohammed et al, 2015). Moreover, crucial additives in polymer formulations include microfillers like fly ash, which serve to diminish the rate of the curing reaction and reduce the exothermic degree (Petrie, 2006;Fadiel et al, 2023).…”