Comparative Analysis of Compressive Strength Between Normal Concrete and Fast Track Concrete Against Variations in Coarse Aggregate Size

Abstract

Objective: This research aims to compare the compressive strength performance of Normal Concrete (NC) and Fast Track Concrete (FTC) using PCC cement with variations in coarse aggregate size at 1, 3, and 28 days, and determine the optimal aggregate variation for both concrete types.

Research Method: A laboratory experimental method was used by preparing 18-cylinder specimens (150 cm diameter, 300 cm height) consisting of 6 mixture variations: 3 NC variations and 3 FTC variations.

Findings: The highest FTC compressive strength reached 27.88 MPa in 1 day (A3), representing a 93.07% increase compared to the highest NC (14.44 MPa).

Originality: This study provides specific empirical data on the influence of varied coarse aggregate combinations (A1, A2, A3) on the performance of High Early Strength concrete (FTC) based on PCC cement in Indonesia, contributing significantly to construction practices demanding accelerated curing times