Title:
Durability of Lightweight Concrete Bridge In Severe Environments
Author(s):
Alexander M. Vaysburd
Publication:
Concrete International
Volume:
18
Issue:
7
Appears on pages(s):
33-38
Keywords:
DOI:
Date:
7/1/1996
Abstract:
The bridge environment exposes concrete to some of the worst imaginable conditions. Bridges are often subjected to cumulative environmental effects. Aggressive salts, freezing and thawing, wetting and drying, and heating and cooling are superimposed on structural members already highly stressed by external loads and restrained volume changes. Lightweight concrete has emerged as an important sector of the structural concrete industry. It possesses properties similar to those of normal-weight concrete in many ways, yet is different in significant aspects. Lightweight aggregate concrete is best used when treated as a unique material with its own technology; its special properties are fully considered in design, specifications, and costruction; and fully utilized in performance.