ACI PRC-506.1-21 (IN-LB, SI) PDF Download

ACI PRC-506.1-21 (IN-LB, SI) standard provides comprehensive information and guidelines on the technology and applications of fiber-reinforced shotcrete (FRS). The guide focuses on the use of synthetic and steel macrofibers in shotcrete applications. It aims to bridge the gap between the information provided by ACI Committee 506 and ACI Committee 544.

The standard outlines the typical mixture proportions, batching, mixing, and application procedures for FRS. It also discusses the modification of mixture proportions and the equipment required for FRS applications. The document emphasizes the general performance criteria of FRS, including postcracking flexural strength and toughness. It highlights the additional benefits of FRS, such as increased resistance to shrinkage cracking and enhanced impact resistance. Test methods for evaluating the properties of FRS are also outlined.

Furthermore, the standard covers general design considerations for FRS applications. It provides descriptions and examples of the various applications of FRS, including tunnel and mining linings, slope stabilization, retaining structures, fire-explosive-spalling-resistant linings, and architectural structures. The guide also offers guidance on the specification and quality control of FRS, ensuring that the material meets the necessary standards and requirements.