Physico-Chemical Properties of Ordinary Portland Cement Pastes after Partial Substitution of Gypsum with Thermally Treatment Phosphogypsum
Journal: Advanced Journal of Chemistry-Section A (Vol.3, No. 3)Publication Date: 2020-03-01
Authors : Mahmoud Ahmed Taher; Adel Mohamed Amine; Bassam Khalaf Damarany;
Page : 301-317
Keywords : Phosphogypsum; Clinker; Ordinary Portland Cement;
Abstract
The present study conducted to investigate the potential use of PG in cement industry. This was accomplished by preparing mortar mixes contain Portland cement clinker (PPC) with thermally treated PG at different temperatures (200, 400, 600, 800 and 1000 °C) instead of raw gypsum (RG) at different proportions. The characteristics of prepared mortars were investigated after curing in water for different periods (3, 7, 28 and 90 days) by determination of setting time, compressive strength, bulk density, and total porosity. The hydration kinetics was evaluated by determination of free lime and chemically combined water contents. FTIR spectroscopic analysis was used to investigate the change in structure of some mortars after curing. The change in morphology and microstructure of hardened pastes was investigated using scanning electron microscopy (SEM). The results approved the possibility for the utilization of treated PG at 800 and 1000 °C instead of raw gypsum in cement industry.
Other Latest Articles
- Effective Removal of Cd(II) and Pb(II) from Aqueous Solution by Synthesized Palladium Nanoparticles Using Spent PdCl2 Catalyst: Experimental Design and Optimization
- A Highly Selective Complexometric Determination of Mercury(II) using L-Tyrosine as a Masking agent
- Synthesis, Characterization and Biological Activity of Schiff Bases Based on Chitosan and Acetophenone Derivatives
- Structural Properties and Cation Distribution in Co2+ and Ho3+ Ions Induced Nanocrystalline ZnFe2O4
- Propylene Oxide−Ethylene Oxide Block Polymer as a Surfactant for Cloud Point Extraction of Some Metal Ions
Last modified: 2020-03-03 02:43:31