presentazione standard di powerpoint...willing to pay for durability, just need guarantees. then,...
TRANSCRIPT
Esteban [email protected]
Reduction of costs through extreme durability
concretes: Two successful stories
Understanding real costs
Typical purchase criterium: “How much?” (construction cost)
After construction ≈ additional 50% of IC + User Cost
Thus, investing 5-10% of IC in higher durability sounds obvious…
… but, how can the Administration defend this “investment”?
Guarantees (lifespan, no maintenance)
*Historical life-cycle costs of steel and concrete girder bridges. M.G.Barker, 2016
Reduce, delimit and quantify
Our approach
Aligned with sustainability policies: Minimum LCCosts/impact. We need tosupport/train clients to understand the benefits of this approach.
How to build the trust on durability expectations?
1. Monitoring of AdCon and OC structures (to compare). Viable, cost is reduced.
2. Develop practical procedures to design under durability criteria.
3. Pilots of AdCon structures to show possibilities in different sectors
4. To promote sustainability/cost efficiency, tenders may consider craddle to grave award criteria. Justify minimum cost/impact during lifespan
Relevance of durability in footbridge costs
immagine
Steel truss
UHPFRC truss. 2014
steel truss. 2013
concrete beams. 90’
Relevance of durability in footbridge costs
immagine
Summer’17: 30.000 € in rehabilitationEAE+poor approach
Steel truss
immagine
Construction 2014
Relevance of durability in footbridge costs
UHPFRC truss
immagine
Administration: Frequently, short-term view.
Reparation: User costs+social costs. Puçol: Many people crossing.
El Puig: Repaired in May+June 2017, sunny months without access
to sea. After using it once, citizens feel its use as their right!
Durability is like a battery.
You only think about it when its ending.
Relevance of durability in footbridge costs
immagine
Relevance of durability in footbridge costs
2013
2019
Relevance of durability in floating platforms
Wood has higher user+social costs (reparation=risk)
Target customers: Traditional, they look at tomorrow.
Conservative, long-term thinkers, long-term costs
They know that high durability minimizes infrastructure cost
Willing to pay for durability, just need guarantees. Then, easy
penetration
Relevance of durability in floating platforms
video incorporato nella
presentazione
Proving durability to the clients
