Influence of Gadolinium Oxide (cas 11129-31-0) and ulexite on cement hydration and technical properties of mortars for neutron radiation shielding purposes

Add time:07/21/2019    Source:sciencedirect.com

Gadolinium Oxide (cas 11129-31-0) (Gd2O3) is a potentially effective mineral additive that improves neutron shielding properties of cement based composites. The paper presents the influence of Gd2O3 and ulexite (a boron compound) on Portland cement hydration evaluated by isothermal calorimetry measurements and strength. The progress of hydration was investigated on mortar specimens at water to cement ratio w/c = 0.5 and sand/cement ratio 0.75. The addition of Gd2O3 generates a slight retardation of cement hydration, however it accelerates aluminate activity at the same time. The hydration of cement was completely hindered for mortars containing a substantial content of ulexite. The strength test results show that addition of Gd2O3 to Portland cement mortar mix caused a decrease of early age (3 days) flexural and compressive strength. The optimum content of Gd2O3 in respect to the long term compressive strength and the hydration kinetics was 5% in relation to the mass of cement. Good long term strength was also obtained for specimens with 3% of ulexite.

We also recommend Trading Suppliers and Manufacturers of Gadolinium Oxide (cas 11129-31-0). Pls Click Website Link as below: cas 11129-31-0 suppliers

Prev:Neuroblastoma-targeting triangular Gadolinium Oxide (cas 11129-31-0) nanoplates for precise excision of cancer
Next:Biocompatible Gadolinium Oxide (cas 11129-31-0) nanoparticles as efficient agent against pathogenic bacteria)