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
ACI Global Home Middle East Region Portal Western Europe Region Portal
Home > Tools > Frequently Asked Questions
Question: Size of test cylinder
Question: Estimating in-place concrete strength
Question: Low-strength cylinder test results
Question: Resistance to cycles of freezing and thawing
Question: What is the intention of the ACI 318 Building Code?
Question: The effect of air content on concrete strength
Question: The effect of changes in proportions of the fine and coarse aggregate or the quantity of cementi...
Question: Mixture design and strength submittals
Question: Air tests for non-air-entrained concrete
Question: Using core strength to calculate compressive strength of an existing structure
Question: Using cube tests in lieu of cylinder tests
Question: Factors governing the strength of concrete
Question: How are the relatively small dosages of an admixture measured reliably and placed in the mixer?
Question: Is the cutting of cores or other shaped specimens directly from a completed structure ever used ...
Question: How can it be determined that an admixture will serve its intended purpose?
Question: Who selects the requirements for concrete for a project?
Question: Standards for 7-day and 28-day strength test results
Question: Requirements for a successful concrete structure
Question: The most important single factor affecting compressive strength
Question: If time is not available for preliminary tests, how can the desired strengths be ensured?
Question: Can tests be conducted by anyone?
Question: How do the code requirements get to the contractor?
Search other resources on the ACI website for answers to technical questions