Transactions of the INDIAN CERAMIC SOCIETY Vol. 43 1984
Thermal Studies on the Laterite-Phosphoric Acid System
P. KRISHNA PILLA!, P. PERUMAL, K. G. K. WARRIER
AND s. R. REDDY
Pages : 122-125
DOI : 10.1080/0371750X.1984.10822700
Abstract
Laterite constitutes a mixture of hydrous iron and aluminium oxides
and kaolinite along with quartz. Since the normal firing schedules
used for the consolidation of clays are not suitable for laterites,
attempts have been made to use a chemical binder for their consolidation.
Studies based on thermal analysis and infrared spectroscopy
reveal that phosphoric acid could react with kaolinite and hydrous iron
oxide and the products formed from the reaction could act as the
binding phase. The increase in compressive strength of the blocks of
laterite after reaction with phosphoric acid has been explained on
the basis of differential thermal analysis, infrared spectral data and
certain mineralogical investigations.
