Injeção de nata de cimento para reforço do terreno de fundação de um prédio tipo caixão

Abstract

This case study analyzes the application of cement grout injection as a technique for reinforcing the foundation soil of a box-type building in Vitória de Santo Antão, Pernambuco. The main objective was to evaluate the effectiveness of the method in correcting pathologies, such as cracks and differential settlements, which originated from failures in soil compaction and construction defects that compromised the structural stability of the building. The methodology adopted included a literature review, analysis of technical reports and project plans, and visual inspections in the field to diagnose the anomalies. The execution process of the recovery consisted of injecting cement grout under controlled pressure to fill voids and improve the bearing capacity of the soil. The results, verified through monitoring of the structure after the intervention, demonstrated the stabilization of settlements and the mitigation of pathologies, confirming that the technique significantly improved the geotechnical characteristics of the soil. It is concluded that cement grout injection proved to be an effective and viable solution for ensuring the safety and stability of the foundation, serving as a practical reference for structural rehabilitation projects in similar contexts.