In todayโs market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have itโฆthey 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
Q. How much water goes into combination with the cement during the hardening of concrete? A. For complete hydration of portland cement, the w/cm is about 0.4 by mass. Only 0.2 unit of water by mass combines chemically with cement during hydration. Hydration product has about 30% pore space, and water needs to be available to fill it, which requires the other 0.2 unit of water. References: SP-1(02) Topics in Concrete: Concrete Fundamentals
Q. How much water goes into combination with the cement during the hardening of concrete?
A. For complete hydration of portland cement, the w/cm is about 0.4 by mass. Only 0.2 unit of water by mass combines chemically with cement during hydration. Hydration product has about 30% pore space, and water needs to be available to fill it, which requires the other 0.2 unit of water.
References: SP-1(02)
Topics in Concrete: Concrete Fundamentals
Search other resources on the ACI website for answers to technical questions