Construction of the Outer Circular Highway to the City of Colombo (from Kadawatha to Kaduwela) under the Ministry of Port and Highways Road Development Authority (RDA) which comprises:
- a 4-lane main highway of 8.9 km long
- 2 interchanges
- 21 bridges
High-performance CHRYSO® concrete admixtures are designed to achieve long workability, cohesiveness, increased strengths and durability.
CHRYSO®Fluid Optima 100 are used for the 1957 precast girders:
- It required slump retention to deliver the concrete and high early strengths for deshuttering.
- The concrete was cohesive whatever lack of fines and variations of content.
CHRYSO®Omega 101 and CHRYSO®Omega 104 are used for Super/Sub Structures including 1700 bored and foundation piles:
- Two CHRYSO® solutions, specifically adapted to crush sands, soften the concrete without much higher binder dosage.
- 2-hour slump retention achieved at required strength level.
Owner: Road Development Authority (RDA)
Contractor: Taisei Corporation (Japan)
RMC Suppliers, precast Girders: Taisei Corporation
Structural concrete works: Tokyo Supermix
Bored Piles: Access Engineering
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