2015/10/23 by Yihe Zhang, Fan Wang, Hongwei Huang +4 · 1 citation
Engineering · #Recycling and utilization of industrial and municipal waste in materials production #Bauxite Residue and Utilization #Concrete and Cement Materials Research
paper · doi:10.1080/09593330.2015.1102329
openalex publication_date 2015/10/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
Calcined titanium gypsum was investigated by the ways of XRD (powder X-ray diffraction), XRF (X-ray fluorescence) and TG-DTA (thermogravimetric-differential thermal analyses). It was employed as raw material for making lightweight materials. The influence of cement, amount of water/solid (W/S) ratio, water-reducing agent, citric acid content and the hydration age on the gypsum blocks was investigated. The results showed that the optimum W/S ratio, cement content and water-reducing agent are 0.9, 10% and 2 wt% for the calcined gypsum from titanium gypsum, respectively. The 5.96 MPa was attained after 7 days of ageing. It was also found that the citric acid is inappropriate to be used in the production of gypsum blocks from TiO2 production by-products.