Modification of Portland Cement Concrete with Epoxy as Admixture


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Title: Modification of Portland Cement Concrete with Epoxy as Admixture

Author(s): Sandor Popovics

Publication: Special Publication

Volume: 89


Appears on pages(s): 207-230

Keywords: admixtures; compressive strength; concrete durability; epoxy resins; marine atmospheres; plasticizers; polymerization; splitting tensile strength.

Date: 12/1/1985

The work presented is a portion of a larger investiga-tion concerning the improvement of durability of concrete structures in seawater. Therefore, as an introduction, the deterioration of reinforced concrete in corrosive environment is discussed followed by a description of two types of polymer modification of concrete. This latter means the addition of a liquid polymer of polymerizable system to the fresh concrete. The major portion of the paper presents a new investigation concerning the effects of epoxy modification on the properties of concrete, primarily strength. It is demonstrated that the addition of a suitable epoxy to the fresh concrete can increase the concrete strength significantly. This strength improvement can be further increased by the simultaneous use of a compatible superplasticizer, or an accelerator, or both.