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What are high-density aggregates?

Q. What are high-density aggregates?


A. High-density aggregates generally consist of high-density minerals or rocks, or they consist of man-made materials, such as steel or iron. High-density aggregates are used to produce concrete that has higher than normal density, usually for radiation shielding or an application where high-density concrete is needed for counter balancing, ballasting, or stabilizing. High-density concrete may be used in sound or vibration attenuation and in improving the abrasion resistance in industrial facilities (ACI 221R).


References: SP-1(02); E-1(16); ACI 221R-96; ASTM C33

Topics in Concrete: Aggregate; Concrete Fundamentals; Materials

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