In situ observation for the influence of hydraulic pressure on internal damage of cement-based materials

Article Construction & Building Technology

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

Mari Kobayashi et al.

Summary: This study investigates the changes in compressive strength and phase composition of cement mortar kept on the seafloor at a depth of 1680 meters for 608 days. The specimens exhibited severe visible damages, with significant decreases in compressive strength due to factors such as the dissolution of portlandite and formation of new phases.

CEMENT AND CONCRETE RESEARCH (2021)

添加到收藏夹

Article Construction & Building Technology

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

Keisuke Takahashi et al.

Summary: This study aims to develop a technology platform and in-situ monitoring methods for cement-based materials in deep-sea environments. Through in-situ tests, the time-dependence and microstructure changes of cement mortar in deep-sea conditions were investigated. Results showed that dimensional changes occurred under short-term hydraulic pressure, but no time-dependent behavior was observed.

JOURNAL OF ADVANCED CONCRETE TECHNOLOGY (2021)

添加到收藏夹

Article Construction & Building Technology

The influence of restraint on the expansion of concrete due to delayed ettringite formation

Yuichiro Kawabata et al.

Summary: Restraint had a significant impact on the expansive behaviors of concrete due to DEF, with the expansive pressure being strongly affected by the restraint direction; surface crack length was independent of the degree of restraint, while crack distribution was significantly influenced by the degree of restraint.

CEMENT & CONCRETE COMPOSITES (2021)

添加到收藏夹

Review Multidisciplinary Sciences

X-ray computed tomography

Philip J. Withers et al.

Summary: This article outlines the basic principles, scanning methods, and applications of X-ray computed tomography (CT) in science and engineering. CT can be used for reconstructing 3D images, tracking material structural evolution, and addressing imaging artifact issues.

NATURE REVIEWS METHODS PRIMERS (2021)

添加到收藏夹

Article Construction & Building Technology