Nivelación y reperfilado de superficies verticales y techos (RAP 10S)-Nivelación y reperfilado de superficies verticales y techos (RAP 10S)

Nivelación y reperfilado de superficies verticales y techos (RAP 10S)

Pdf Summary

The ACI RAP Bulletin 10 provides a practical guide for leveling and re-profiling vertical surfaces and ceilings in concrete repair. Leveling and re-profiling involve filling surface air voids and restoring acceptable surface profiles using specialized or site-mixed materials, typically applied to areas up to 0.9 m² and thicknesses up to 6 mm. Larger or thicker repairs require different methods such as stucco or coatings.<br /><br />Material selection depends on the concrete substrate, environmental exposure, and functional demands. Options include acrylic-based materials, cement-based mortars, polymer-modified cement mortars, and polymer resin-based mortars. The guide emphasizes evaluating the concrete deterioration causes, structural function, and exposure to select compatible and durable repair materials.<br /><br />Preparation is critical for good adhesion. Surfaces must be cleaned, sound, open-textured, and free from contaminants, using methods such as abrasive blasting, high-pressure water, sanding, or scarification. Appropriate tools include surface prep equipment, mixing devices, trowels, and potentially spray equipment for larger areas.<br /><br />Applications vary from non-structural façades and curtain walls (usually acrylic-based) to structural elements like beams, columns, parking structures, bridges (cement-based or polymer-modified cement mortars), and chemical exposure environments like water treatment tanks (polymer-modified materials plus protective coatings).<br /><br />Safety precautions include protective clothing, eye protection, gloves, and respirators as necessary due to potential skin sensitization from polymers. Users must consult product safety data sheets and follow regulations.<br /><br />Repair effectiveness is assessed after curing (7-14 days) via nondestructive tests (e.g., hammer sounding, impact-echo) or destructive bond strength tests per ASTM C1583.<br /><br />Overall, the guide stresses that proper assessment, material selection, surface preparation, application, curing, safety, and testing are essential to achieve durable and aesthetically acceptable concrete surface repairs.

Keywords

ACI RAP Bulletin 10

concrete repair

leveling and re-profiling

surface preparation

material selection

acrylic-based materials

cement-based mortars

polymer-modified mortars

safety precautions

nondestructive testing