Carbonation is a typical type of concrete deterioration that can cause various physicochemical changes and adversely affects the performance reinforced structures, particularly in offshore structures. Nonlinear resonant ultrasonic spectroscopy (NRUS), which non-destructive test technique, applied this study to experimentally evaluate degree carbonation without damaging structure. Nonlinearity p...

Abstract Carbonation of mantle rocks during exhumation is reported in present-day oceanic settings, both at mid-ocean ridges and ocean-continent transitions (OCTs). However, the hydrothermal conditions carbonation (i.e., fluid sources, thermal regimes) remain poorly constrained. We focus on an exceptionally well-preserved fossil OCT where have been exhumed carbonated along a detachment fault fr...

Abstract Carbonation induced corrosion is one of the major durability issues for reinforced concrete structures. To address this issue, it essential to understand underlying mechanism carbonation by detecting ingress CO 2 and depth quantitatively. This paper demonstrates potential Raman spectroscopy, as a powerful technique, implement quantification analysis cement paste carbonation. In present...

This article reviews the progress made in CO2 separation and capture research and engineering. Various technologies, such as absorption, adsorption, and membrane separation, are thoroughly discussed. New concepts such as chemical-looping combustion and hydrate-based separation are also introduced briefly. Future directions are suggested. Sequestration methods, such as forestation, ocean fertili...