10.5286/ISIS.E/ISIS.E.RB1820243
Dr Alejandro Fernandez Martinez
Miss Zhanar Zhakiyeva
Dr Gabriel Cuello
Dr Alexander Van Driessche
Dr Daniel Bowron
Water structure in C-A-S-H by neutron diffraction with isotopic substitution: insights into the hydration properties of low CO2 cements
ISIS Facility
2019
STFC ISIS Neutron and Muon Data
The manufacture of every ton of cement emits approximately 0.8 tons of CO2 into the atmosphere, comprising 5¿7% of the global human-made CO2 emissions. A low pH - low CO2 class of alkali activated materials consisting of a nanoscopic phase of an Al-substituted C-S-H, called C-A-S-H, is one of the most promising replacements of traditional cementitious binders. C-A-S-H has improved durability and strength properties, as well as environment-friendly character (slag recycling and reduced CO2 emission). However, very little is known about the atomistic structure of C-A-S-H and the structural and dynamical properties of water within its pores. Here, we propose to use the information gained from a recent study on the structural properties of different C-S-H pores in order to understand how the presence of Al substitutions affects the structural properties of water in the different C-S-H pores.