论文信息 - Silicate bonding of inorganic materials

Silicate bonding of inorganic materials

The room-temperature setting process in compacts of various silicate and non-silicate mineral particles bonded with sodium silicate was found to be markedly accelerated by treatment with the acidic gases CO2, S02 and H2S, but was unaffected by neutral or alkaline gases. Strength development increases with gassing time up to a maximum value which depends on the Si to Na ratio of the sodium silicate, the nature of the mineral matter and the gas used. Longer gassing times are needed to achieve ultimate strength with sodium silicates of higher pH and gases of lower solubility in water. The chemical species formed by reaction of CO2, S02 and H2S with sodium silicate were investigated by IR spectroscopy, X-ray diffraction and 29-Si solid state NMR spectroscopy.

[1] R. H. Pierson,et al. Catalog of Infrared Spectra for Qualitative Analysis of Gases , 1956 .

[2] É. Lippmaa,et al. Solid-state high-resolution silicon-29 chemical shifts in silicates , 1984 .

[3] W. Giggenbach. Blue solutions of sulfur in water at elevated temperatures , 1971 .

[4] C. Ray Bamford,et al. Colour Generation and Control in Glass , 1977 .

[5] H. Kleinschmager,et al. Raman- und IR-Spektren von festen Alkali-Polysulfiden. , 1976 .

[6] V. Farmer. The Infrared spectra of minerals , 1974 .

[7] H. Ziemann,et al. Schwingungsspektren fester, flüssiger und gelöster Metallpolysulfide. II. Polysulfide Rb2Sn und Cs2Sn (n ⩾ 4) sowie Na2S4 , 1979 .