Authors :
Eduardo Antonio Maia Lins; Sérgio Carvalho de Paiva; Anna Kattaryne Cavalcante dos Santos; Luiz Vital Fernandes Cruz da Cunha
Volume/Issue :
Volume 5 - 2020, Issue 8 - August
Google Scholar :
http://bitly.ws/9nMw
Scribd :
https://bit.ly/3h69BRu
DOI :
10.38124/IJISRT20AUG658
Abstract :
The urban environment, due to its
characteristics of population concentration, causes
changes in the original environment. These changes,
when studying the degradation of buildings, especially
of concrete structures, include the occurrence of acid
rain, deposition of solid particles and the release of
carbon dioxide into the atmosphere, responsible for the
carbonation of concrete and consequent corrosion of the
reinforcement. Given these facts, the Boa Vista
neighborhood, located in the Metropolitan Region of
Recife, Brazil, can be considered an urban environment
conducive to the generation of acid rain due to its high
flow of vehicles, in addition to having large buildings,
around 1500 housing units. . This study aimed to
analyze the quality of rainwater in the neighborhood
and to compare the content of existing compounds in
runoff waters, with the rate of ions dragged from grout
specimens, exposed to laboratory simulation of a rain
intense in a natural way. Based on physical chemical
analyzes carried out, the average pH found for the rains
collected from the atmosphere was 6.10, indicating a
slight acidity. The ions found in the highest
concentration were Cland Ca +2. In addition to the
content of ions incorporated by the building's water
flow, it was about six times smaller than the residual
material integrated in the water that came into contact
with the simulated specimens, when comparing the data
obtained for the pH range found in water drained from
the building in a natural way (pH = 5.5 - 6.0).
Keywords :
Precipitation; Acidity; Specimens; Building
The urban environment, due to its
characteristics of population concentration, causes
changes in the original environment. These changes,
when studying the degradation of buildings, especially
of concrete structures, include the occurrence of acid
rain, deposition of solid particles and the release of
carbon dioxide into the atmosphere, responsible for the
carbonation of concrete and consequent corrosion of the
reinforcement. Given these facts, the Boa Vista
neighborhood, located in the Metropolitan Region of
Recife, Brazil, can be considered an urban environment
conducive to the generation of acid rain due to its high
flow of vehicles, in addition to having large buildings,
around 1500 housing units. . This study aimed to
analyze the quality of rainwater in the neighborhood
and to compare the content of existing compounds in
runoff waters, with the rate of ions dragged from grout
specimens, exposed to laboratory simulation of a rain
intense in a natural way. Based on physical chemical
analyzes carried out, the average pH found for the rains
collected from the atmosphere was 6.10, indicating a
slight acidity. The ions found in the highest
concentration were Cland Ca +2. In addition to the
content of ions incorporated by the building's water
flow, it was about six times smaller than the residual
material integrated in the water that came into contact
with the simulated specimens, when comparing the data
obtained for the pH range found in water drained from
the building in a natural way (pH = 5.5 - 6.0).
Keywords :
Precipitation; Acidity; Specimens; Building
