This project examines the major factors that contribute to premature deterioration of concrete structures, develop cost- effective concrete mix design to enhance the durability of future structures and make recommendations on improvements in construction practice and workmanship considered necessary to improve service life.This report essentially combines the Interim laboratory testing report 1 & 2 along with the interpretative discussions on phase II experimental work undertaken to study the durability of various concrete mixes. The outcome of the phase I testing helped in establishing the interrelationship between various factors such as W/C ratio, cement content, strength, workability and corrosion inhibitors for local materials available in Bangladesh. The interrelationship established in Phase I study was used to develop the research matrix for Phase II study, which deals with durability testing of various concrete mixes. The outcome of the phase II study on durability testing of concrete clearly demonstrates the improvement in performance of concrete with flyash or slag additions. The study concludes that the concrete mix with at least 30% addition of flyash as cementitious content produced more durable concrete mix for aggressive marine exposure conditions in the coastal regions of Bangladesh.
This work is part of the Applied Research on Rural Roads and Transport Services through Community Access Programmes in Africa and Asia (AFCAP2 and AsCAP)
Mott MacDonald (2018). Climate Resilient Concrete Structures in Marine Environment of Bangladesh - Final Field and Laboratory Testing Report. London: ReCAP for DFID.
Published 31 January 2018