Influence of Styrene-Butadiene Rubber Latex Binder in Hybrid Manufactured Sand–Fly Ash Concrete with Different Admixture and Its Mechanical Properties

Abstract

The cement-to-m-sand ratios used to produce the mortar mixtures ranged between 1:3 and 1:4 with different dosages of fly ash used for mechanical characteristics. The predominant peaks in the FTIR spectrum indicate the
presence of fly ash, SBR bonding agent and admixture in the concrete motor. Apart from these peaks, MFC3 and MFC5 show some of the other peaks for styrene group stretching, polycarboxylic ether stretching bending in the
plane, the carbonyl group of superplasticizer, stretching of isopropene butadiene. In fly ash mixed concrete, the XRD spectra imply three polymorphs of crystal structure consisting of orthorhombic, triclinic and monoclinic
phases. The addition of various admixtures significantly improved the surface morphology, as seen in the SEM image. The mechanical investigation discovered that as clay percentages grow up to MFC (30 wt %), the compressive strength increases because of the strong adhesion induced by the combination of water reduction and water repellent, which enhances compactness and lowers porosity. Styrene-Butadiene Rubber and polycarboxylate ether were added, which improved the addition of slump flow. After 25 minutes of resting, there was a noticeable
decline in workability.