High stenghth concrete with high cement substitution by adding fly ash, CaCO3, silica sand, and superplasticizer

• Main Authors: Wicaksono, Muchammad Ridho Sigit, Qoly, Amelia, Hidayah, Annisaul, Pangestuti, Endah Kanti
• Format: Conference Proceeding
• Language: English
• Subjects: Additives; Calcium carbonate; Cement; Compressive strength; Concrete; Fly ash; Innovations; Moisture content; Pasta; Sand; Silicon dioxide; Substitutes
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/1.4976932

Concrete is a mixture of cement, fine aggregate, coarse aggregate and water with or without additives. Concrete can be made with substitution of cement with materials like Fly Ash, CaCO3 and silica sand that can increase the binding on pasta and also increase the compressive strength of concrete. The Superplasticizer on a mixture is used to reduce the high water content, improve concrete durability, low permeability concrete by making it more resilient, and improve the quality of concrete. The combination between Fly Ash (30% of cement required), CaCO3 (10% of cement required) and silica sand (5% of cement required) with added MasterGlenium ACE 8595 as much as 1,2% from total cement will produces compressive strength of up to 1080 kN/cm2 or 73,34 Mpa when the concrete is aged at 28 day. By using this technique and innovation, it proves that the cost reduction is calculated at 27%, which is much more efficient. While the strength of the concrete is increased at 5% compared with normal mixture.