| Literature DB >> 26495867 |
Yihe Zhang1,2, Fan Wang1, Hongwei Huang1, Yuxi Guo1, Baoying Li1, Yangyang Liu1, Paul K Chu2.
Abstract
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.Entities:
Keywords: Titanium gypsum; building materials; gypsum blocks; industrial wastes; recycling
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Year: 2015 PMID： 26495867 DOI： 10.1080/09593330.2015.1102329
Source DB: PubMed Journal: Environ Technol ISSN： 0959-3330 Impact factor: 3.247