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A platform for research: civil engineering, architecture and urbanism
Factors Leading to Inconsistent Slump and Setting Behaviour of Concrete Using Different Clinkers, Sulphates and Superplasticizers
A concrete mixture that has been used successfully for some time, can suddenly exhibit unpredictable and undesirable effects due to changes in the cement composition during production or due to a change in the cement manufacturer or supplier for a construction project. The change in the composition of cement, along with the addition of admixtures (specifically superplasticizers) leaves concrete mixes vulnerable to inconsistent behaviour and possibly incompatibilities. This study aims to identify the components that leave a mix prone to inconsistent behaviour and the consequences thereof in practice. It was found that the C3A and alkali content in clinkers are of high importance when faced with inconsistent behaviour. These components influence a mix’s compatibility with sulphates and superplasticisers, as well as its slump flow and set times characteristics.
Factors Leading to Inconsistent Slump and Setting Behaviour of Concrete Using Different Clinkers, Sulphates and Superplasticizers
A concrete mixture that has been used successfully for some time, can suddenly exhibit unpredictable and undesirable effects due to changes in the cement composition during production or due to a change in the cement manufacturer or supplier for a construction project. The change in the composition of cement, along with the addition of admixtures (specifically superplasticizers) leaves concrete mixes vulnerable to inconsistent behaviour and possibly incompatibilities. This study aims to identify the components that leave a mix prone to inconsistent behaviour and the consequences thereof in practice. It was found that the C3A and alkali content in clinkers are of high importance when faced with inconsistent behaviour. These components influence a mix’s compatibility with sulphates and superplasticisers, as well as its slump flow and set times characteristics.
Factors Leading to Inconsistent Slump and Setting Behaviour of Concrete Using Different Clinkers, Sulphates and Superplasticizers
RILEM Bookseries
Beushausen, Hans (editor) / Ndawula, Joanitta (editor) / Alexander, Mark (editor) / Dehn, Frank (editor) / Moyo, Pilate (editor) / van Wyk, Carla (author) / Stone, Lorna (author) / Combrinck, Riaan (author)
International Conference on Concrete Repair, Rehabilitation and Retrofitting ; 2024 ; Cape Town, South Africa
2024-11-01
10 pages
Article/Chapter (Book)
Electronic Resource
English
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