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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
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
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