Reparación de Superficies de Concreto Mediante Técnicas de Encofrado y Bombeo (RAP 5S)-Reparación de Superficies de Concreto Mediante Técnicas de Encofrado y Bombeo (RAP 5S) (PDF)

Reparación de Superficies de Concreto Mediante Técnicas de Encofrado y Bombeo (RAP 5S) (PDF)

Pdf Summary

The document is a practical guide on concrete surface repair using formwork and pumping techniques, authored by Peter Emmons and promulgated by the ACI's Committee E706, with involvement from various experts. It emphasizes the importance of safe practices and compliance with occupational safety standards while acknowledging that the institute only offers guidance, not substitutes for individual assessment or engineering judgment.<br /><br />The guide outlines a multistep process involving the preparation and assembly of formwork, followed by the pumping of repair material into the confined cavity created by the formwork and existing concrete. This method allows flexibility in using various pumpable repair materials. The document emphasizes consolidating the repair material for intimate contact with existing surfaces, using pressure during the pumping process. Key advantages include uniform material placement, protection during curing, and reduced operator error.<br /><br />Surface preparation is crucial and involves removing delaminated concrete to expose sound surfaces, ensuring the reinforcement bars are clean and free from corrosion. The repair materials chosen must be pumpable and exhibit low drying shrinkage to prevent issues like cracking or delamination.<br /><br />Specific equipment and safety considerations are essential, such as using proper personal protective gear and ensuring compliance with safety standards. Quality assurance involves pre-construction meetings to align all parties and conducting trial repairs. Once the formwork is ready and the repair materials are properly mixed and pumped, testing for adequate adhesion and integrity post-repair includes methods like pull-out tests and non-destructive evaluations.<br /><br />The document concludes with references for additional information on concrete repair methods, stressing prepared adherence tests and ensuring no voids exist within the repaired areas. This approach aims to restore the structural integrity and surface requirements of damaged concrete elements efficiently.

Keywords

concrete repair

formwork

pumping techniques

Peter Emmons

ACI Committee E706

safety standards

surface preparation

repair materials

quality assurance

structural integrity