The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best …

Epoxy-coated reinforcement. Q. Why is epoxy-coated reinforcement used in concrete? A. Steel in concrete is usually protected against corrosion by the high pH of the surrounding portland-cement paste. Cement paste has a minimum pH of 12.5, and steel will not corrode at that pH.

Mar 1, 2025 · ACI Concrete Terminology. Epoxy is an adhesive used for bonding concrete. Epoxy resins are used with concrete in the form of coatings, repair materials, grouts, bonding agents, paints, adhesives, epoxy mortars, sealers, penetrating sealers, wearing surfaces, and as admixtures to hydraulic cement concrete to make epoxy polymer-modified concrete.

Mar 1, 2024 · The Concrete Epoxy Interface (CEI) plays a crucial role in the structural performance of FRP-repaired concrete as it transfers stresses from the concrete to the epoxy. By employing the image segmentation technique, the performance of the CEI is assessed through the ratio of Interfacial Failure (IF) to other failure types, namely cohesive ...

ASTM C 881, “Standard Specification for Epoxy-Resin-Base Bonding Systems for Concrete,” identifies the basic criteria for selecting the grade and class of epoxies (see Table 1). For concrete sections greater than 12 in. (305 mm), the working time may need to be increased, and the viscosity decreased, as the crack gets smaller.

Epoxy-coated reinforcement and cover depth against ground. Q. Table 20.5.1.3.1 of ACI 318-19 requires that concrete cast against and permanently in contact with ground has 3-in. (76 mm) specified cover over reinforcement. Can this cover be reduced if …

This specification describes the work of repairing defects in hardened portland cement concrete with an epoxy mortar. Included are controls for epoxy resin system labeling, storage, handling, surface evaluation and preparation, mixing and application, inspection, quality control, and testing.

concrete by injection of two-component epoxy-resin adhesive. Keywords: adhesive; crack; epoxy; repair injection; sealer. ACI 548.15-20 Specification for Crack Repair by Epoxy Injection An ACI Standard Reported by ACI Committee 548 Mahmoud M. Reda Taha, Chair Ashraf I. Ahmed Mohammad A. Alhassan Jacques A. Bertrand Constantin Bodea Chris Davis ...

This specification describes the work of bonding fresh concrete to hardened concrete with a multi-component epoxy adhesive, such as defined for this purpose in ASTM C881/C881M. Included are controls for adhesive labeling, storage, handling, surface evaluation and preparation, mixing and application, inspection, safety, quality control, and testing.

ACI SPEC-503.3M-10 Specification for Producing a Skid-Resistant Surface on Concrete by the Use of Epoxy and Aggregate (Metric) ACI PRC-503.5-92: Guide for the Selection of Polymer Adhesives in Concrete (Reapproved 2003)