Transcription of Introduction to Concrete
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Introduction to Concrete
CHAPTER 1 Introduction to ConcreteConcrete s versatility, durability, sustainability, and economy have made it the world s most widely usedconstruction material . About four tons of Concrete are produced per person per year worldwide and about per person in the United States. The term Concrete refers to a mixture of aggregates, usually sand, and eithergravel or crushed stone, held together by a binder of cementitious paste. The paste is typically made up ofportland cement and water and may also contain supplementary cementing materials (SCMs), such as fly ash orslag cement, and chemical admixtures (Figure 1-1).
the materials used in concrete and the essentials required to design and control concrete mixtures for a wide variety ofstructures. 1 Figure 1-1. C : , , , , , . Industry Trends The United States uses about 230 million cubic meters (300 million cubic yards) of ready mixed concrete each year (Figure 1-2).
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