| Title | Evidence of scawtite and tilleyite formation at ambient conditions in hydrated Portland cement blended with freshly-precipitated nano-size calcium carbonate to reduce greenhouse gas emissions |
|---|---|
| ID_Doc | 27029 |
| Authors | McDonald, LJ; Afzal, W; Glasser, FP |
| Title | Evidence of scawtite and tilleyite formation at ambient conditions in hydrated Portland cement blended with freshly-precipitated nano-size calcium carbonate to reduce greenhouse gas emissions |
| Year | 2022 |
| Published | |
| Abstract | Activated calcium carbonate (a-CaCO3) is used partially to replace Portland cement. a-CaCO3 is comprised of nanoscale calcium carbonate, in amorphous and calcite forms, and its enhanced carbonate activity converts calcium carbonate from being an inert filler to a reactive component. Its reaction with the C-S-H phase alters the conventional hydrate mineralogy with spontaneous formation at similar to 20?degrees C of scawtite, Ca-7(Si6O18)CO3.2H(2)O and tilleyite, Ca5Si2O7(CO3)(2). Compressive strength measurements show that up to 20 mass% cement replacement by calcium carbonate does not decrease 7-and 28-day compressive strengths compared to a Portland cement benchmark. a-CaCO3 also accelerates the hydration of silicate clinker minerals. Using activated calcium carbonate as a supplementary cementing material enables substantial reduction of CO2 emissions, firstly by capturing part of the CO2 from cement kilns to make nanoscale calcium carbonate and secondly, by using the a-CaCO3 capture product to replace part of the cement. |
Similar Articles
| ID | Score | Article |
|---|---|---|
1506
|
Cosentino, I; Liendo, F; Arduino, M; Restuccia, L; Bensaid, S; Deorsola, F; Ferro, GA Nano CaCO3 particles in cement mortars towards developing a circular economy in the cement industry(2020) | |
| 25210
|
Cosentino, I; Restuccia, L; Ferro, GA; Liendo, F; Deorsola, F; Bensaid, S Evaluation of the mechanical properties of cements with fillers derived from the CO2 reduction of cement plants(2019) | |
| 27515
|
Suescum-Morales, D; Jiménez, JR; Fernández-Rodríguez, JM Use of Carbonated Water as Kneading in Mortars Made with Recycled Aggregates(2022)Materials, 15.0, 14 | |
| 25627
|
Zajac, M; Skocek, J; Ben Haha, M; Deja, J CO2 Mineralization Methods in Cement and Concrete Industry(2022)Energies, 15, 10 | |
| 23713
|
Batuecas, E; Liendo, F; Tommasi, T; Bensaid, S; Deorsola, FA; Fino, D Recycling CO2 from flue gas for CaCO3 nanoparticles production as cement filler: A Life Cycle Assessment(2021) | |
| 26379
|
Kryvenko, P; Rudenko, I; Sikora, P; Sanytsky, M; Konstantynovskyi, O; Kropyvnytska, T Alkali-activated cements as sustainable materials for repairing building construction: A review(2024) | |
| 14507
|
Baggio, TF; Possan, E; Andrade, JJD Physical-chemical characterization of construction and demolition waste powder with thermomechanical activation for use as supplementary cementitious material(2024) | |
| 29203
|
Nwankwo, CO; Bamigboye, GO; Davies, IEE; Michaels, TA High volume Portland cement replacement: A review(2020) | |
| 29318
|
Menéndez, E; Argiz, C; Recino, H; Sanjuán, MA Characterization of Mortars Made with Coal Ashes Identified as a Way Forward to Mitigate Climate Change(2022)Crystals, 12.0, 4 | |
| 13108
|
Jhatial, AA; Nováková, I; Gjerlow, E A Review on Emerging Cementitious Materials, Reactivity Evaluation and Treatment Methods(2023)Buildings, 13.0, 2 |