Concrete with barite, limonite, and magnetite specified in ASTM C637 is classified as heavyweight concrete due to the high density of these aggregates. This type of concrete is advantageous for applications requiring radiation shielding and structural strength. Thus, the correct answer is D) Heavy-weight concrete. ;
The concrete with barite, limonite, and magnetite as specified in ASTM C637 is classified as heavy-weight concrete, which is used for its density and strength, particularly beneficial in shielding applications. Therefore, the correct choice is D) Heavy-weight concrete.
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