Technical Questions

ACI Committees, Membership, and Staff have answered common questions on a variety of concrete related topics.



Reinforced concrete vs. prestressed concrete

Q. What is the difference between conventional reinforced concrete and prestressed concrete?

 

A. In prestressed concrete, internal stresses are introduced by compressing the concrete so that the tensile stresses resulting from service loads can be counteracted to a desired degree. The prestress is introduced by tensioning the tendons. The presence of the prestress enables the concrete to carry higher loads without cracking. With prestressed concrete, the engineer can also design longer spans using the same depth beam.

 

References:  SP-1(02); ACI 318-19; E2-00

Topics in Concrete: 318 Building Code; Concrete Fundamentals; Prestressed; Reinforcement

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