Proceedings-DFI-India 2016: 6th Conference on Deep Foundation Technologies for Infrastructure Development in India, (DFI)
Deep Foundations: Study on Effect of Drilling Fluids on Concrete Integrity
Sri Ram Ramankutty, GEO – Ground Engineering Operations Malaysia Sdn. Bhd., Kuala Lumpur, Malaysia and Alberto Carmona Rosell, GEO – Ground Engineering Operations Ltd., Madrid, Spain
The installation of Bored Piles and Diaphragm Wall under slurry using tremie raises quality concerns on the integrity of concrete. It is vital to understand the effects on concrete integrity during concrete pouring process. This paper intends to unveil to what extent the compressive strength of the concrete pour is affected in contact with drilling fluid still. Another important angle of analysis proves whether the inclusion of solids particles of un-hydrated fluid could have impact on the concrete compressive strength. The testing comparing the response of concrete compressive strength when drilling fluid is included into the concrete mix altering the water/cement ratio by 5%, 20% and 30%. Comparative results are analysed between two different hydrated slurries namely sodium activated Bentonite and 3rd generation synthetic polymer.
|article #2217; publication #1020 (INDIA-2016)|