Methodology for designing structures to withstand extreme environments: Performance based specifications
Paper in proceedings, 2010

Existing guidelines in BS 8500 allow the selection of concrete mix based on variables such as compressive strength, maximum water to binder ratio, minimum cement content and minimum cover thickness. This approach does not guarantee the durability and expected performance of the concrete structure in a given environment. One alternative is to develop performance- based specifications that supplement the existing guidelines in BS 8500, by specifying the required performance of concrete in terms of measurable properties such as resistance to environmental penetrations. This paper demonstrates one of such methodology for developing performance-based specifications for concretes exposed to marine environments. Chloride ingress related durability problem being critical in a marine environment, the reliability and repeatability of the different test methods for assessing the rate of chloride ingress is discussed first. Furthermore, a numerical simulation model is used to explore the test data to obtain long-term chloride ingress trends. Based on this, guidelines for selecting appropriate concrete mixes for a marine exposure is presented and discussed.

durability

chloride

Concrete

performance-based design

corrosion

Author

Sree Nanukuttan

N. Holmes

S Srinivasan

P.A.M. Basheer

Luping Tang

Chalmers, Civil and Environmental Engineering, Building Technology

John McCarter

Research in Ireland, BCRI 2010, 2-3 Sept 2010, Cork, Ireland

663-670

Areas of Advance

Building Futures (2010-2018)

Materials Science

Subject Categories

Other Materials Engineering

Building Technologies

ISBN

978-0-9542973-3-6

More information

Created

10/7/2017