Materials for Civil and Construction Engineers (4th Edition)
4th Edition
ISBN: 9780134320533
Author: Michael S. Mamlouk, John P. Zaniewski
Publisher: PEARSON
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Chapter 8, Problem 8.13QP
A portion of a 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 following:
a. percent absorption
b. moisture content of the unit as a percent of total absorption
c. dry density
d. weight classification according to ASTM C90 (lightweight, medium weight, or normal weight)
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A portion of a normal-weight concrete masonry unit was tested for absorption and moisture content and
produced the following masses:
mass of unit as received = 1.95 kg
saturated mass of unit = 2.13 kg
oven-dry mass of unit = 1.91 kg
immersed mass of unit = 0.95 kg
Calculate the absorption in kg/m³ and the moisture content of the unit as a percent of total absorption. Does
the absorption meet the ASTM C90 requirement for absorption?
A portion of a 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 gsaturated mass of unit = 7401 goven-dry mass of unit = 6916 gimmersed mass of unit = 3624 gDetermine the following:a. percent absorptionb. moisture content of the unit as a percent of total absorptionc. dry densityd. weight classification according to ASTM C90 (lightweight, mediumweight, or normal weight)
Where MM is 25 and DD is 12.
Chapter 8 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 8 - Prob. 8.1QPCh. 8 - Prob. 8.2QPCh. 8 - Prob. 8.3QPCh. 8 - Prob. 8.4QPCh. 8 - Prob. 8.5QPCh. 8 - Prob. 8.6QPCh. 8 - Prob. 8.7QPCh. 8 - Prob. 8.8QPCh. 8 - Prob. 8.9QPCh. 8 - Prob. 8.10QP
Ch. 8 - Prob. 8.11QPCh. 8 - A portion of a medium-weight concrete masonry unit...Ch. 8 - A portion of a concrete masonry unit was tested...Ch. 8 - A concrete masonry unit was tested according to...Ch. 8 - Prob. 8.15QPCh. 8 - Prob. 8.16QPCh. 8 - A severe weathering clay brick was tested for...Ch. 8 - Prob. 8.18QPCh. 8 - What is the grout? What is the grout used for?Ch. 8 - Prob. 8.20QP
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