DESIGN AND APPLICATIONS OF SULFONATED MELAMINE FORMALDEHYDE SUPERPLASTICIZER IN HIGH PERFORMANCE CONCRETE STRUCTURE

Abstract

The purpose of this study was to create sulfonated melamine formaldehyde using a condensation process as a superplasticizer for high-performance concrete. The NMR spectra confirmed that the newly synthesized chemical was produced in a satisfactory yield (85%). Seven batches of various concrete composite compositions with SMF in quantities ranging from 0.5% to 3.5% were created in order to assess the compound's performance and investigate the effect of sulfonated melamine formaldehyde on the concrete's compressive strength. In order to create more robust and long-lasting concrete structures, the mechanical strength of concrete specimens incorporating SMF was examined. A total of forty-two concrete cube specimens were produced. After seven and twenty-eight days, the samples' compressive strength was measured using a CTM. The results demonstrated that using SMF as a superplasticizer greatly increased the concrete specimens' compressive strength. After 28 days, concrete samples with 3% SMF had an impressive average compressive strength of 3258 psi, which was around 5.4% higher than the compressive strength of reference samples (2716 psi). Scanning electron microscopy was used to perform morphological examination. Additionally, SEM images showed that the interfacial transition zone between cement particles was significantly enhanced when SMF was added to the concrete