Fluorine gypsum physical modification, to study the different grinding time and calcination temperature on the properties of fluorine gypsum basic effect, and its mechanism were discussed. Test show that the grinding process can improve particle size distribution of fluorine gypsum, reduce water consumption standard consistency, shorten the setting time, improve the strength of hardened body, fluorine gypsum best grinding time to 20 min; Fluorine gypsum powder mill, calcining process, and can significantly improve the performance of the fluorine gypsum, little effect.Fluorine gypsum in the chemical modification to study the different kinds of admixtures for powder mill fluorgypsum setting time, strength and frost. Research has shown that a single to improve on the properties of fluorine gypsum type admixture is not comprehensive, has its limitations. Among them, A small amount of additive A adding can obviously shorten the setting time of fluorgypsum, enhance early strength, but it will cause the happen of the frost phenomenon; Dosage of sodium carbonate can promote the hydration and hardening of fluorgypsum, inspire fluorgypsum intensity, but its content is big, small effect; A large amount of admixture B adding can accelerate the fluorine gypsum hardening process, increase the late strength of fluorgypsum, effectively avoid generic frost phenomenon, but its intensity is limited; inspire fluorgypsum Dosage of sodium nitrite can improve the performance of condensation on the fluorine gypsum very well, but it will cause sample expansion, cracking, the phenomenon such as warp, fluorine gypsum volume stability is poorer.
Fluorine gypsum self-leveling material experiment, research the different kinds of water reducing agent and the compatibility of fluorine gypsum self-leveling material, to disperse latex powder on the mechanical behavior of fluorine gypsum self-leveling material, its function mechanism is discussed. Test showed that naphthalene series water reducing agent and fluorine gypsum self-leveling material has good compatibility, the appropriate mix content is 1.0%; To disperse latex powder can significantly improve the fluorine gypsum self-leveling material mechanical properties, suitable content is 3%.Fluorine gypsum foaming material experiment, research the foaming agent, stabilizing agent, polypropylene fiber, waterproofing agent on the properties of fluorine gypsum foaming material, its function mechanism is discussed. Results show that the suitable dosage of foaming agent was 5%, the stability, the appropriate mix content of the foam agent was 1.5%, 0.5% polypropylene fiber is suitable, waterproofing agent suitable content is 2.0%.
