This guideline is intended to assist architects, engineers, owners and their agents, developers, general contractors, and flooring contractors who are accountable for the successful installation of a floor covering or coating over an interior concrete sub-floor that is on, below, or above grade. This guideline provides information regarding moisture issues, moisture testing methods, interpretation of test results, and moisture mitigation strategies. The information provided in the guideline is meant to assist in the successful installation of floor coverings and coatings.
The ACI 562-16 Repair Code is primarily intended for the Licensed Design Professional for providing the requirements necessary for assessing and designing repairs and rehabilitation of existing concrete structures.
In June 2016, ACI published ACI 562-16,” Code Requirements for Assessment, Repair and Rehabilitation of Existing Concrete Structures and Commentary”. ACI 562-16 replaces ACI 562-13 as a standard for the repair of existing concrete structures. Significant changes to ACI 562-16 include improvements in terminology for consistency with ISO, ASCE and other documents, inclusion of requirements for level of repair based upon extent of damage present, and revisions to the interface bond provisions. The video will describe the concrete repair code, focusing on key changes made to the code and describe how the code is to be used on concrete repair projects.
Purchase publication Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures and Commentary (ACI 562-19) and publication Guide to the Code for Evaluation, Repair, and Rehabilitation of Concrete Buildings (562MAN-20) together. Hard copies only.
Reported by ACI Committee 562
This latest version of the code was developed to provide design professionals a code for the assessment of damage and deterioration, and the design of appropriate repair and rehabilitation strategies. The code provides minimum requirements for assessment, repair, and rehabilitation of existing structural concrete buildings, members, systems and, where applicable, nonbuilding structures. ACI 562-21 was specifically developed to be incorporated into the International Existing Building Code (IEBC) or to be adopted as a stand-alone code.
This is a reference specification that the architect/engineer can apply to any construction repair and rehabilitation project involving structural concrete by citing it in the project specifications.
Mandatory requirements and optional requirements checklists are provided to assist the architect/engineer in supplementing the provisions of this specification, as required or needed, by designating or specifying individual project requirements. The first section covers general construction requirements for all repair work. The second section covers shoring and bracing of the structure or member to be repaired, and addresses sequencing of repair work as the structure is unloaded and reloaded. The third section covers concrete removal and preparation of the concrete substrate for repair, and defines common equipment and methods. The next five sections cover materials and proportioning of concrete; proprietary cementitious and polymer repair materials; reinforcement; production, placing...
The installation of externally applied FRP systems has been slow to evolve due to limitations of materials used in the field. This demonstration will show how to make the most out of the materials with efficient application methods that will save time and money.
Alkali-Silica Reaction (ASR) can cause significant damage to concrete structures including bridges, roadways, airport runways, and nuclear power plants. When reactive aggregates are included in a mix, the presence of moisture initiates a reaction between the alkaline cement paste and reactive amorphous silica. The result is a gel that continues to dilate, which may cause cracks in the concrete mass. A research program was undertaken at the University of Toronto to investigate the effects of ASR on large-scale and small-scale concrete specimens. Several specimens were constructed using reactive (ASR) concrete and non-reactive (regular) concrete, and their short-term and long-term structural and mechanical behavior were compared. In this presentation, we will discuss the results of the research program, will offer best practices to minimize the risk of ASR in concrete during placement, and will propose several strategies for repair of structures that have been degraded due to ASR.