THE STRENGTH AND RHEOLOGICAL PROPERTIES OF CONCRETE CONTAINING FLYASH AND SULPHONATED NAPHTHALENE FORMALDEHYDE CONDENSATE SUPERPLASTICIZER AS SINGLE AND DOUBLE ADMIXTURE

Abstract

This research study investigates the impact of Flyash and Sulphonated Naphthalene Formaldehyde (SNF) Condensate Superplasticizer, both as single and double admixtures, on the compressive strength and workability of concrete. It explores the use of supplementary cementitious materials and chemical admixtures to enhance concrete properties, with a focus on sustainability and high-performance construction. The research involves extensive materials and methods descriptions, including the source and preparation of materials, lab equipment, concrete cube specimen production, curing procedures, and testing methods. Key findings include the positive influence of SNF on compressive strength, with the optimal percentage observed at 2% SNF. For Flyash, the best results were achieved at 4% replacement of cement. Combining Flyash and SNF in the concrete mix led to compressive strength values exceeding those of traditional concrete, indicating their beneficial effects on strength and structural performance. Additionally, both Flyash and SNF improved concrete workability, with a synergistic effect observed when used together. The study recommends the adoption of SNF and Flyash as concrete admixtures for their potential to enhance strength, accelerate project timelines, and provide eco-friendly benefits. However, it emphasizes the importance of carefully selecting and balancing these additives for specific construction applications.

KEYWORDS: Admixture, Compressive Strength, Concrete, Fly ash, Sulphonated Naphthalene               Formaldehyde (SNF) Condensate Superplasticizer, Workability