Evaluating the Quantity of CO2 Absorbed in Concrete by TOC Solid Sample Measurement System

User Benefits

- Quickly and easily measure the quantity of CO₂ absorbed in concrete, without extraction or other pretreatment steps (measurement time: 6 to 8 minutes). - Measure sample quantities up to 1 g to minimize effects from uneven distribution within samples. - The system can measure both total carbon (TC) and inorganic carbon (IC) content values, which can be subtracted to determine the total organic carbon (TOC) content.

Introduction

Reducing carbon dioxide ( CO₂) emissions that cause global warming is a global issue that has resulted in a variety of initiatives for achieving carbon-neutrality in various industries. Since the process of manufacturing cement, which is a key ingredient in concrete, emits large quantities of CO₂, there have been various initiatives in the construction industry to reconsider the ingredients and manufacturing processes for producing concrete. One such initiative that has attracted interest is the development of a new type of concrete that can capture CO₂ that was emitted into the atmosphere by fixing it into the concrete ingredients. In addition to reducing the quantity of cement used, using CO₂-absorbing ingredients is expected to enable a significant reduction in the quantity of CO₂ emitted. Specific proposals include a method for fixing CO₂ in concrete as carbon salts by mixing CO₂-absorbing ingredients into concrete mixtures. This article describes an example of using the TOC solid sample measurement system to evaluate the quantity of CO₂ absorbed and fixed in concrete by measuring its inorganic carbon (IC) content.

May 16, 2022 GMT