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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Tools > Frequently Asked Questions
Question: What are shrinkage-compensating expansive cement and concrete?
Question: Consolidation of concrete—required or not?
Question: Acceptable concrete cracking
Question: Decorative concrete finishes
Question: Curing and curling of concrete slabs over vapor retarders
Question: Heat of hydration and the importance of controlling it
Question: When should saw cuts be made on a concrete slab?
Question: Air tests for non-air-entrained concrete
Question: What is the purpose of finishing and texturing concrete surfaces?
Question: Improving the abrasion resistance of concrete
Question: The effect of joints on the durability of concrete structures
Question: What nominal maximum sizes of aggregate are recommended?
Question: Tolerances for concrete slabs supporting steel tanks
Question: Increasing the load capacity of a slab-on-ground using an overlay
Question: Minimum concrete cover for balconies with PT cables
Question: Strength of concrete
Question: Painting the floor
Question: Popouts or popoffs?
Question: How is the shrinkage of concrete determined?
Question: Determining the cause of a crack
Question: Tolerances for floors supporting operable partitions
Question: When can the finishing procedure be started?
Question: What is curing?
Question: How is the abrasion resistance of concrete determined?
Question: Governing version of ACI 318
Question: Curing Cylinders for Acceptance Testing
Question: Slabs-on-ground
Question: Curling, shrinkage, and w/cm
Question: The importance of proper drainage
Question: Difference between a contraction joint, isolation joint, expansion joint, construction joint, an...
Question: Substantial structural damage
Question: Two-way slabs design, ACI 318 vs. FEM
Question: Design of Slabs-on-ground
Question: Placement of welded wire reinforcement (WWR) in a slab-on-ground
Question: Vapor barriers
Question: Shear Design Provisions in ACI 318-19
Question: Cleaning slabs during tilt-up construction
Search other resources on the ACI website for answers to technical questions