FraMCoS 11 2023 Bangalore, India

Investigations into the microstructural composition of cement paste with carbon dioxide sequestration

The study examines the impact of different water-to-cement ratios on CO sequestration 2 in cement paste, crushed dry ice was added at 4% by weight of cement, to carbonate paste made with regular Portland cement and tap water. The second…

First page of: Investigations into the microstructural composition of cement paste with carbon dioxide sequestration
Year 2023
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Abstract

The study examines the impact of different water-to-cement ratios on CO sequestration 2 in cement paste, crushed dry ice was added at 4% by weight of cement, to carbonate paste made with regular Portland cement and tap water. The second approach used bubbling CO2 gas directly into the mixing vessel. Setting time and compressive strength experiments on 50mm cube specimens have been carried out to investigate the impact of early-age carbonation on physical attributes. Measurements of pH, X-ray Diffraction (XRD), and Thermogravimetric analysis (TGA) have all been used to analyze modifications in the chemical structure of the hardened cement paste brought on by the procedure employed to capture CO2. Scanning Electron Microscopy (SEM) has been used to analyze the morphological and chemical differences between non-carbonated and carbonated samples.