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Chloride-free setting accelerator for hydraulic binding agents
Alkali-free setting- and hardening-accelerator based on aluminum hydroxide, a water soluble sulfate, nitrate or formate salt (of calcium, magnesium, iron or aluminum), and a cellulose ether.
Publisher: Burge et al, Sika AG, vorm. Kaspar Winkler & Co. (CH), 1985, US4507154
Cat: Patents: Cement Set Accelerators

Structural and spectral studies on gypsum crystals under simulated conditions of phosphoric acid production with and without organic and inorganic additives
The effect of organic and inorganic additives on the structure and spectrum of gypsum crystals under simulated conditions of phosphoric acid production (phopho-gypsum) is studied using x-ray diffraction and infrared spectroscopy. Additives used: Citric acid, 1,2-Dihydroxybenzene-3,5-disulfonic acid, Cetyltrimethylammonium bromide (CTAB), sodium lauryl sulfate, aluminium hydroxide, magnesium oxide. [7 pages, 107 kB, PDF]
Publisher: M.M. Rashad, H.M. Baloumy, E.A. Abdel-Aal. Cryst. Res. Technol. 38 (6): 433-439. (2003)
Cat: Materials Science: Gypsum and Anhydrite

Cement accelerator and method
An alkali-free accelerator for sprayed cementitious composition, such as concrete, is prepared by dissolving aluminium sulphate in water and amorphous aluminium hydroxide in water optionally containing amine, and adding at least one stabiliser which is glycolic acid, and optionally at least one defoaming agent.
Publisher: MBT Holding AG, 2003. WO03045872
Cat: Patents: Cement Set Accelerators

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