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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. What are the raw materials used in the manufacture of portland cement? A. The two principal materials from which portland cement is made are a material of high lime content, such as limestone, chalk, shells, or marl, and a material of high silica and alumina content such as clay, shale, or blast-furnace slag. A small amount of iron is also needed. Sometimes the principal materials are combined in naturally occurring deposits. The proportions of the raw materials need to be controlled to ensure a uniform product. References: SP-1(02); ACI 225R-19; E3-13 Topics in Concrete: Cementitious Material; Concrete Fundamentals
Q. What are the raw materials used in the manufacture of portland cement?
A. The two principal materials from which portland cement is made are a material of high lime content, such as limestone, chalk, shells, or marl, and a material of high silica and alumina content such as clay, shale, or blast-furnace slag. A small amount of iron is also needed. Sometimes the principal materials are combined in naturally occurring deposits. The proportions of the raw materials need to be controlled to ensure a uniform product.
References: SP-1(02); ACI 225R-19; E3-13
Topics in Concrete: Cementitious Material; Concrete Fundamentals
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