ABSTRACT
Durability Performance Indicators (DPIs), measurable in relatively short time, are proposed to assess the durability performance of concretes under risk of chloride-induced corrosion. The suitability of these DPIs is validated against results of a comprehensive experimental investigation, conducted on 18 concrete mixes of two w/b ratios (0.40 and 0.65) and binder contents (280 and 380 kg/m³), made with nine different Portland clinker-based binders including two OPCs, Silica Fume, Fly-Ash, Blast-Furnace Slag and Limestone Filler. The mixes were evaluated for compressive strength and also by several DPIs: Coefficient of Chloride Migration (EN 12390-18), Rapid Chloride Permeability (ASTM C1202), Coefficient of air-permeability kT (Swiss Standard SIA 262/1 and Argentine IRAM 1892) and Electrical Resistivity (AASHTO T358 and UNE 83988-2). The validity of the proposed DPIs and their potential usefulness for Service Life design and quality control is discussed. The unsuitability of w/b ratio and compressive strength as durability indicators is confirmed.
