A portion of a normal-weight concrete masonry unit was tested for absorption and moisture content according to ASTM C140 procedure and produced the following results: Mass of unit as received: 7024 g Saturated mass of Unit: 7401 g Oven-dry mass of unit: 6916 g Immersed mass of unit: 3624 g Determine the weight classifiation according to ASTM C90 (lightweight, medium weight, or normal weight)

A portion of a normal-weight concrete masonry unit was tested for absorption and moisture content according to ASTM C140 procedure and produced the following results: Mass of unit as received: 7024 g Saturated mass of Unit: 7401 g Oven-dry mass of unit: 6916 g Immersed mass of unit: 3624 g Determine the weight classifiation according to ASTM C90 (lightweight, medium weight, or normal weight)

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter7: Concrete

Section: Chapter Questions

Problem 6RQ: How does the addition of air-entraining materials to Portland cement improve the concrete?

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