Real Case: Assessing Sulfate Resistance of Coastal Protection Precast Elements

Francisco Aracil; Gaetan Dufour; Peter Wauters; Geert de Schutter; Roberto Torrent

doi:10.4028/www.scientific.net/KEM.711.327

Paper Titles

Effects of Water-Cement Ratio on Concrete Sulfate Corrosion Rate
p.295

Mechanical Properties of Concrete in Compression Exposed to Sulfuric Acid
p.302

Degradation of Concrete Structures due to External Sulfate Attack
p.310

Durability of Concrete under Combined Exposure Conditions of Chlorides and Sulfates
p.319

Real Case: Assessing Sulfate Resistance of Coastal Protection Precast Elements
p.327

Resistance of Concrete to Na₂SO₄ Freeze-Thaw Cycles and Failure Mechanism Analysis
p.335

Effect of Rapid Hardening Cement and Setting Accelerator on the Freeze-Thaw Durability of Fly Ash Concrete
p.343

Lattice Modelling of the Onset of Concrete-Ice Abrasion
p.351

Influence of Frost Damage on Chloride Penetration into Concrete
p.359

HomeKey Engineering MaterialsKey Engineering Materials Vol. 711Real Case: Assessing Sulfate Resistance of Coastal...

Real Case: Assessing Sulfate Resistance of Coastal Protection Precast Elements

Abstract:

As part of a new harbor development, a new offshore breakwater will be constructed, for which the use of coastal protection plain precast concrete elements (Accropodes^TM II) is required. The applicable exposure class is S1 (ACI 318). Over 4'000 elements have been produced. The owner required guarantees on the sulfate resistance of the elements before accepting them for usage in the project. For this, a revision of the documentation available was conducted, complemented by a thorough field investigation, measuring the coefficient of air-permeability kT (Swiss Standard SIA 262/1) of preselected elements (damaged during transportation) and elements representing the 28 weeks of production. The site NDTs confirmed a high quality of the majority of elements that were judged fit for the purpose. However, the NDTs confirmed the questionable quality of those cast during the initial period, requiring further evaluation before acceptance.The paper presents the results of: water aggressiveness, cement chemistry, strength quality control and air-permeability kT, and the criterion used to assess sulfate resistance of the elements.

You might also be interested in these eBooks

Concrete under Severe Conditions - Environment and Loading

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 711)

Pages:

327-334

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.711.327

Citation:

Cite this paper

Online since:

September 2016

Authors:

Francisco Aracil, Gaetan Dufour, Peter Wauters, Geert de Schutter, Roberto Torrent*

Keywords:

Air-Permeability, Coastal Protection, On Site, Precast Elements, Seawater, Sulfate Resistance

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Swiss Standard SIA 262/1: 2013, Concrete Structures – Supplementary Specifications", (in German and French). Annex E: 'Air-Permeability on the Structure.

Google Scholar

[2] ACI 318M-11, Building Code Requirements for Structural Concrete, Sept. 2011, 510 p.

Google Scholar

[3] ASTM C150/C150M-12, Standard Specification for Portland Cement, 2012, 9 p.

Google Scholar

[4] Mehta, P.K., Monteiro, P., Concrete: Microstructure, Properties and Materials, 1st Ed., (2001).

Google Scholar

[5] Richardson, M.G., Fundamentals of Durable Reinforced Concrete, Spon Press, (2002).

Google Scholar

[6] Torrent, R. and Ebensperger, L., Measurement of the air permeability of concrete 'in situ': status quo, ICCRRR 2012, Cape Town, South Africa, 2-5 September (2012).

DOI: 10.1201/b12750-49

Google Scholar

[7] EN 206: 2013, Concrete - Specification, performance, production and conformity, Dec. (2013).

Google Scholar