ICC-ES AC531
Full Name
ICC-ES AC531 – Acceptance Criteria for Crystalline-based Permeability-reducing Chemical Admixtures Used in Concrete
Scope
ICC-ES AC531 establishes the requirements for evaluating crystalline-based permeability-reducing chemical admixtures used in concrete. These admixtures are designed to reduce the permeability of concrete, making it more resistant to water and other harmful substances.
The scope of AC531 includes the following:
- Types of admixtures: it covers crystalline-based admixtures, which react with the components of concrete to form insoluble crystals that fill pores and capillaries, reducing permeability.
- Performance requirements: it outlines the performance requirements for these admixtures, focusing on their ability to reduce permeability under various conditions, such as hydrostatic pressure and exposure to aggressive chemicals.
- Test methods: it specifies the test methods for evaluating the permeability reduction of concrete treated with the admixture, including both laboratory and field tests.
- Evaluation criteria: it provides criteria for interpreting the test results and determining whether the admixture meets the requirements for permeability reduction.
The primary goal of AC531 is to ensure that crystalline-based permeability-reducing admixtures used in concrete are effective in reducing permeability and improving the durability of concrete structures. By providing a standardized framework for evaluating these admixtures, AC531 helps engineers and builders make informed decisions about their use in various construction projects.
Resources
Keywords
crystalline-based; permeability-reducing; chemical admixtures; concrete; acceptance criteria; evaluation; test methods; performance; durability; hydrostatic pressure; aggressive chemicals; laboratory tests; field tests