Evaluación y rehabilitación de una macro cisterna con problemas de filtración de agua en los muros de hormigón armado, mediante inyección de poliuretano expandido, ubicada en la urbanización Valle Norte – Daule, Guayas.

Abstract

The present project focuses on the evaluation and rehabilitation of a large water tank located in the Valle Norte residential area in Daule, Guayas, which has issues with water infiltration through its internal concrete partition wall. The objective of the research is to restore the structural integrity of the tank and prevent the contamination of potable water, which is vital for the residents of the area. To achieve this, both destructive and non-destructive tests were conducted to diagnose the current condition of the structure and identify areas affected by leaks. In the development of the project, visual inspection techniques and laboratory tests were employed, such as sclerometry, core extraction, and carbonation tests, to evaluate the resistance and durability of the concrete. The results show that, while the concrete maintains adequate strength, there are cracks and deterioration due to construction deficiencies and prolonged exposure to external agents. As a solution, the injection of expanded polyurethane is proposed to seal the cracks and ensure effective waterproofing, complemented by ultra-fast-setting mortar for additional repairs. This project not only aims to rehabilitate the water tank, but it is also aligned with Sustainable Development Goal #3, particularly target 3.9, contributing to the preservation of public health and the sustainability of the potable water supply system in the community. Keywords: cistern rehabilitation, water infiltration, waterproofing, expanding polyurethane, sustainability