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Methods for estimating the corrosivity of soils

Publisher
Elsevier Science
Year
1939
Tongue
English
Weight
55 KB
Volume
228
Category
Article
ISSN
0016-0032

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✦ Synopsis

Dec., I939.] NATIONAL BUREAU OF STANDARDS NOTES.

783

surface. Damp-curing or the use of a high early strength cement increased wear resistance.

By means of the same apparatus it was also possible to study the dusting of surfaces. Dusting was reduced by surface applications of solutions of magnesium fluosilicate or of water-glass, where the mortar had not been damp-cured. The effect of such treatments appears to be confined to the top o.oI inch of the slabs.

No significant reductions in wear were obtained by liquid surface treatments when applied to slabs damp-cured for 6 days.

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## Abstract Some Queensland soils fail to release the whole of their phosphorus during extraction for 4 h. with boiling hydrochloric acid unless previously ignited. Loss of phosphate from extracts of non‐ignited soils is apparently due to titanium oxides which may either adsorb dissolved phosphate