Abstract Two hundred years (1750–1950) of earthen architecture represents an important period construction in the central region Portugal. Earthen is usually built close to coast or rivers and placed sandy ground. The impact rising damp a general problem efflorescences are common cause damage decay. This was studied building with two types construction, adobe masonry walls formed walls. aim thi...

In previous dissolution studies, dolomite has been commonly assumed to have an ideal composition of CaMg(CO3)2. The objectives this work are determine (1) if dolomites composing hydrocarbon reservoir rocks vary in chemical composition, specifically Ca content, and (2) the effect uptake on rate HCl acid. Dolomitic from different sources were analyzed using several techniques, including: X-ray di...

A three stage flotation scheme was employed to beneficiate a low grade. high dolomitic phosphate ore from Florida. The reagent scheme used. developed on the basis of our previous fundamental studies. consisted of oleic acid added as collector. mineral oil and ethoxylated sulfonate as co-collectors and 1. hydroxy ethylidene 1.1diphosphonic acid (Dequest 2010) as francolite depressant. The three ...