This book discusses the effects of soluble mineral salts on ceramic
brick masonry walls in Petrolina, a city in Pernambuco, Brazil, located
780 km from the ocean. To shed light on this phenomenon, the authors
mapped the pathologies originating from the effects of soluble mineral
salts and installed wells to monitor the underground water supply at
five locations in the city where the phenomenon most frequently occurs.
Further, they analyzed samples of soil, groundwater, and bricks affected
by the phenomenon and measured levels of chloride in the atmosphere at
these sites. The results obtained indicate that the pathological
manifestations are influenced by the high levels of soluble salts
observed in the soil and groundwater samples collected, and are not
affected by chloride in the atmosphere.