NDLI: Hardening performance and mechanism of hydraulic fluorgypsum-based binding material

Content Provider	IEEE Xplore Digital Library
Author	Huang Xu-quan Hou Hao-bo Zhu Xi Zhou Min
Copyright Year	2011
Description	Author affiliation: Department of Resource and Environmental Science, Wuhan University, 430079, China (Huang Xu-quan; Hou Hao-bo; Zhu Xi; Zhou Min)
Abstract	Hardening, hydration performance and mechanism of the hydraulic fluorgypsum-based binding material were studied in this paper. The fluorgypsum-based binding material were mixed 60% fluorgypsum with other chemical activators contained 1% K2SO4, 5% clinker and 35% blast furnace slag. The 28-day compressive strength of the the fluorgypsum-based binding material could reached 41.25MPa, the softening coefficient was 0.936, and the concentration of fluoride reduced to 0.0701 ug/ml‥ Microscopic analyses using XRD, SEM and FTIR revealed that: bar-like ettringite crystals and board-like dihydrate gypsum crystals contacted each other as structural framework. The rest round-flake anhydrite crystals and unreacted CaF2 crystals were embedded by a great deal of network and filamentous C-S-H gel, they sticked and filled in structural framework and formed compacted body. It was main reason that fluorgypsum-based binding material strength improved, water resistance increased and leaching toxicity decreased.
Starting Page	6637
Ending Page	6641
File Size	878394
Page Count	5
File Format	PDF
ISBN	9781457702891
e-ISBN	9781457702907
DOI	10.1109/ICETCE.2011.5774528
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fly ash C-S-H X-ray scattering Ettringite Toxicity Crystals Three dimensional displays Concrete Mechanical factors Fluorgypsum Blast furnace slag Hydraulicity
Content Type	Text
Resource Type	Article

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