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: Consolidation of concrete—required or not?
Question: How is concrete consolidated?
Question: What is the importance of consolidation on strength?
Question: Why is consolidation needed?
Question: What consideration should be given to water that may be lost from concrete between the time it l...
Question: How should the concrete be consolidated to obtain a complete filling of the forms and around the...
Question: Why is a plastic consistency usually desirable for placing concrete?
Question: How is concrete placed?
Question: Does over-vibration cause segregation and loss of air content?
Question: Factors governing the strength of concrete
Question: How is the selection of mixture proportions affected by the materials to be used and the placing...
Question: What nominal maximum sizes of aggregate are recommended?
Question: Can the importance of proper consistency for placing be overemphasized?
Question: What are the essential requirements of consistency?
Question: Factors affecting permeability
Search other resources on the ACI website for answers to technical questions