Reference

Corrosion resistance of reinforcements in concrete with polyfunctional complex chemical additives

Corrosion resistance of reinforcements in concrete with polyfunctional complex chemical additives. Gasan, Yu. (USSR). Stroit. Mater. Konstr., 19(4), 20 (Russian) 1977. CODEN: SMKOD5. DOCUMENT TYPE: Journal CA Section: 58 (Cement and Concrete Products) The plasticizing additives contg. NH4Cl 0.9-1.1, glycine [56-40-6] 0.3-0.4, and (COONH4)2.H2O [6009-70-7] 0.1-0.12 or oxalic acid [144-62-7] 0.11-0.13% hasten hardening of concrete during the early stages and increase wet strength by 20-5%. In concrete with a water/cement ratio 0.4, the additives impart a high corrosion resistance to steel reinforcements.

Optical phonons of ammonium oxalate monohydrate at 295 K and 10 K

Optical phonons of ammonium oxalate monohydrate at 295 K and 10 K. Cadene, M.; Fournel, A.In this study，6009-70-7 is also used. (Dep. Phys., Fac. Sci., Dakar, Senegal). J. Mol. Struct., 37(1), 35-57 (French) 1977. CODEN: JMOSB4. DOCUMENT TYPE: Journal CA Section: 73 (Spectra by Absorption, Emission, Reflection, or Magnetic Resonance, and Other Optical Properties) Section cross-reference(s): 75 Polarized IR reflection spectra at temps. of 295 and 10 K together with Raman scattering measurements at 30-4000 cm-1 are reported for a single crystal of NH4 oxalate monohydrate. The structure detd. by x-ray diffraction methods is confirmed. The symmetry, D2h or D2d, is studied. An anal. in terms of Drude oscillators leads to a better understanding of the dielec. properties of the single crystal and also the detn. of the dispersion parameters of the transverse and longitudinal optical modes. .