Physicochemical Properties of Portland Cement/Calcium Aluminate Cement/Calcium Sulfate Ternary Binder Exposed to Deep Seafloor-Reference-Cited by-同舟云学术

Physicochemical Properties of Portland Cement/Calcium Aluminate Cement/Calcium Sulfate Ternary Binder Exposed to Deep Seafloor

Published:2023-12 Issue:6 Volume:6 Page:1305-1308
ISSN:2509-7075
Container-title:ce/papers
language:en
Short-container-title:ce papers

Author:

Kobayashi Mari¹,Takahashi Keisuke¹²,Kawabata Yuichiro³,Bier Thomas A.⁴

Affiliation:

1. Mitsubishi UBE Cement Corporation Ube Japan

2. Kagawa University Takamatsu Japan

3. Port and Airport Research Institute Yokosuka Japan

4. Technische Universität Freiberg Freiberg Germany

Abstract

AbstractCementitious materials employed in deep‐sea marine engineering must have excellent durability. In this study, the durability of a ternary binder‐based paste composed of Portland cement, calcium aluminate cement, and anhydrite was investigated after deep‐sea exposure at a depth of 3515 m for 438 days. The recovered paste specimen showed significant expansion. However, the hydrate phases in the ternary binder exhibited no changes with the exception of the formation of Friedel's and Kuzel's salts. One reason for this was the transformation from unstable monosulfate to stable ettringite under low‐temperature seawater conditions. However, the additional ettringite formation could lead to significant expansion of the paste specimen.

Publisher

Wiley

Subject

General Earth and Planetary Sciences,General Environmental Science

Link

https://onlinelibrary.wiley.com/doi/pdf/10.1002/cepa.2920

Reference13 articles.

1. Physicochemical properties of the Portland cement-based mortar exposed to deep seafloor conditions at a depth of 1680 m

2. Physicochemical properties of Portland cement/calcium aluminate cement/calcium sulfate ternary binder exposed to long-term deep-sea conditions

3. Action of Hydraulic Pressure on Portland Cement Mortars - Current Understanding and Related Progress of the First-Ever In-Situ Deep Sea Tests at a 3515 m Depth

4. Kobayashi M. Takahashi K. Yamanaka T. Makita H.(2019)Physicochemical properties and durability of cement-based materials on the deep sea floor. The proceedings of 15th International Congress on the Chemistry of Cement 75.

5. Aitcin P. C. Blais F. George C. M.(1995)Durability of calcium aluminate cement concrete: assessment of concrete from a 60-year old marine structure at Haligax. NS Canada pp.145–168.