Thesis-1999-Dehwah.pdf (6.86 MB)
Influence of cement composition on concrete durability in chloride–sulfate environments
thesis
posted on 2017-11-16, 11:40 authored by Hamoud A.F. DehwahThe poor durability performance of reinforced concrete structures is a major
problem facing the construction industry throughout the world. It IS estimated that
more than $200 billion will be required to repair and rehabilitate deteriorated
concrete structures in the USA. Similarly, it is estimated that more than £2 billion will
be needed to repair deteriorated concrete structures in the UK Also, considerable
resources have to be diverted towards the repair of deteriorated concrete structures in
the countries along the Arabian Gulf. Concrete deterioration, worldwide, is mainly
attributed to reinforcement corrosion that is caused by chloride ions. However, the
effect of other ions, particularly sulfates, on reinforcement corrosion has not been
adequately studied. Reinforced concrete structures in marine environments and those
built in ‘sabkha’ soils are exposed to both chloride and sulfate salts The combined
presence of these two ions may accelerate reinforcement corrosion. Cement chemistry
may also Significantly influences the mechanisms of reinforcement corrosion. The
quantity of C3A and the alkali content of cement effects its chloride-binding capacity.
While considerable research has been conducted on the effect of C3A content of
cement on its chloride-binding and reinforcement corrosion, meagre data exist on the
effect of cement alkalinity on chloride-binding, while no study has been conducted to
evaluate the effect of cement alkalinity on reinforcement corrosion. [Continues.]
History
School
- Architecture, Building and Civil Engineering
Publisher
© Hamoud Ahmad Farhan DehwahPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 2.5 Generic (CC BY-NC-ND 2.5) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by-nc-nd/2.5/Publication date
1999Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en