Holistic approach to durable high performance concrete
Title: Holistic approach to durable high performance concrete
Author(s): N.S. Berke, M.C. Hicks, L. Li, K.A. Rieder
Paper category : conference
Book title: International Conference on Advances in Concrete and Structures
Editor(s): Ying-shu Yuan, Surendra P. Shah and Heng-lin Lü
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 727 - 738
Total Pages: 12
Nb references: 29
Steel reinforced concrete is one of the most widely used construction materials due to its excellent durability and composite performance. However, performance can be significantly reduced in marine and deicing salt environments. Calcium nitrite corrosion inhibitor substantially improves resistance to chloride-induced corrosion, and is widely used throughout the world. Life cycle modeling shows that calcium nitrite is cost effective in concretes with reduced permeability, including high performance concretes.
New advancements in concrete technology have further enhanced the benefits of using calcium nitrite. These include the use of shrinkage reducing admixtures and non-metallic fibers for structural reinforcement to reduce both the tendency of concrete to crack and to mitigate crack openings if it does. In this paper we present long-term data showing that calcium nitrite improves the corrosion performance of high performance concretes. Furthermore, we show that combinations of calcium nitrite and shrinkage reducing admixtures have improved corrosion resistance coupled to a significant reduction in shrinkage, which is a major cause of cracking in high performance concretes. Combinations of high performance concrete with calcium nitrite and shrinkage reducing admixtures with the use of newly developed structural synthetic fibers result in durable concrete with enhanced flexural performance.
Online publication: 2003-08-10
Publication type : full_text
Public price (Euros): 0.00