aci 506 2m 13 specification for shotcrete english rs, retarders, plasticizers, air-entraining agents, and corrosion inhibitors may be used. Compatibility: Must conform to ASTM C494 or ASTM C260 standards. Application: Proper dosage and thorough mixing are critical to achieve desired performance. Water Quality: Potable water is generally acce Aug 29, 2025 Read more →