Email Address is required Invalid Email Address
In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Learn More
Become an ACI Member
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.
Staff Directory
ACI World Headquarters 38800 Country Club Dr. Farmington Hills, MI 48331-3439 USA Phone: 1.248.848.3800 Fax: 1.248.848.3701
ACI Middle East Regional Office Second Floor, Office #207 The Offices 2 Building, One Central Dubai World Trade Center Complex Dubai, UAE Phone: +971.4.516.3208 & 3209
ACI Resource Center Southern California Midwest Mid Atlantic
Feedback via Email Phone: 1.248.848.3800
Home > Tools > Frequently Asked Questions
Question: Curling, shrinkage, and w/cm
Question: What are shrinkage-compensating expansive cement and concrete?
Question: The effect of water-reducing admixtures on drying shrinkage
Question: How is the shrinkage of concrete determined?
Question: What is autogenous shrinkage?
Question: The effect of aggregate characteristics on concrete shrinkage and permeability
Question: The effect of water-cementitious ratio on permeability and shrinkage
Question: The effect of pozzolans on shrinkage
Question: Would adding more cement serve the purpose of admixtures?
Question: Curing and curling of concrete slabs over vapor retarders
Question: Maximum temperature limits for hot-weather concreting
Question: Other important properties of concrete
Question: Do some water-reducing admixtures induce bleeding?
Question: Increasing the load capacity of a slab-on-ground using an overlay
Question: Slabs-on-ground
Question: Evaluating the properties of hardened concrete
Question: The effect of joints on the durability of concrete structures
Question: The purpose of calcium sulfate (gypsum)
Question: Characteristics of aggregate affecting concrete strength
Question: Specialty admixtures
Question: What fibers are used in concrete?
Question: What nominal maximum sizes of aggregate are recommended?
Question: The effect of changes in proportions of the fine and coarse aggregate or the quantity of cementi...
Question: Is there any measure of the completeness or adequacy of curing?
Question: How can the effectiveness of curing be measured?
Question: Can the strength gain of concrete that has ceased due to drying out at early ages be restored by...
Question: What is calcium-aluminate cement?
Question: Acceptable concrete cracking
Search other resources on the ACI website for answers to technical questions