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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 is mass concrete?
Question: Pozzolans in mass concrete
Question: Heat of hydration and the importance of controlling it
Question: Maximum temperature limits for hot-weather concreting
Question: Requirements for durable concrete
Question: Temperature limits for mass concrete
Question: Water Curing Mass Concrete Structures
Question: Would adding more cement serve the purpose of admixtures?
Question: Definition of concrete, hydraulic cement, mortar, and grout
Question: Benefits of using slag cement
Question: What does a pozzolan do in the concrete?
Question: What is the effect of freezing on concrete?
Question: How to Control Mass Concrete Temperature during Construction
Question: Using and handling pozzolans
Question: Why is consolidation needed?
Question: How is the temperature of concrete measured?
Question: The effect of pozzolans on water demand
Question: What methods are commonly used to ensure sufficient moisture for curing concrete?
Question: Material Requirements for Mass Concrete
Question: What consideration should be given to water that may be lost from concrete between the time it l...
Question: Commonly used accelerating admixture
Question: Could a sulfate-resisting cement and slag cement be combined and used for concrete exposed to su...
Question: Mixture design and strength submittals
Question: What test is available to evaluate the behavior of no-slump concrete as it is vibrated?
Question: Temperature Control Time
Question: What is slag cement or ground granulated blast-furnace slag (GGBFS)
Question: Minimum Dimension of a Structure
Question: How should the aggregates and other ingredients be measured to obtain uniformity in proportions?
Question: What are rebound, penetration resistance, and pullout tests?
Question: Definition of setting time
Question: Can the heat liberated by the hydrating cement be relied on to give protection during cold weather?
Question: What does ACI recommend regarding water-cement (w/c) ratios or admixtures to improve workability...
Question: How can the surface or free water carried by the aggregates be determined?
Question: Predicating Temperature for Mass Concrete
Question: What correction should be made for absorbed water and surface water carried by the aggregates?
Question: How much water goes into combination with the cement during the hardening of concrete?
Question: Is storing the specimens on the structure always a satisfactory procedure for estimating in-plac...
Question: How is the water-cementitious material ratio (w/cm) expressed?
Question: What are the essential requirements of consistency?
Question: How is the slump test made?
Question: The making of portland cement
Question: If the paste is ample in amount, but is too thin and watery to float the aggregate particles, wh...
Question: What is yield?
Search other resources on the ACI website for answers to technical questions