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ASTM Selected Technical Papers
Masonry
By
Brian E. Trimble,
Brian E. Trimble
1
Brick Industry Association Symposium
, Co-chairman and STP editor
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Joseph H. Brisch
Joseph H. Brisch
2
Rockwell Lime Company
, Symposium Co-chairman and STP editor
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ISBN-10:
0-8031-3492-4
ISBN:
978-0-8031-3492-8
No. of Pages:
168
Publisher:
ASTM International
Publication date:
2008
eBook Chapter
Variations in the Activity of Dry-Powder Water-Repellent Mortar Admixtures with Different Mortar Formulae
By
Herb Nordmeyer
,
Herb Nordmeyer
1
Project & Technology Manager and Senior Lab Technician
, respectively, San Antonio Lab, Headwaters Construction Materials
, 5014 Callaghan Road, San Antonio, Texas 78228
.
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Pam Hall
Pam Hall
1
Project & Technology Manager and Senior Lab Technician
, respectively, San Antonio Lab, Headwaters Construction Materials
, 5014 Callaghan Road, San Antonio, Texas 78228
.
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Page Count:
13
-
Published:2008
Citation
Nordmeyer, H, & Hall, P. "Variations in the Activity of Dry-Powder Water-Repellent Mortar Admixtures with Different Mortar Formulae." Masonry. Ed. Trimble, BE, & Brisch, JH. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 2008.
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A number of water repellents are added to masonry mixes and masonry units. To be classified as a water-repellent mortar admixture, ASTM C 1384 Specification for Admixtures for Masonry Mortars, requires that the 24-h rate of water absorption needs to be reduced by at least 50 % when compared to a control mortar without the admixture. While testing two well-known water-repellent admixtures, a substantial difference in activity was noted with the mortar that was being tested. Testing was expanded to include other water-repellent admixtures and several additional mortar formulae. This paper discusses the findings of that study.
References
1.
ASTM C 1384, “
Standard Specification for Admixtures for Masonry Mortar
,” ASTM International
. For referenced ASTM standards, visit the ASTM website, www.astm.org. For Annual Book of ASTM Standards volume information, refer to the Standard's Document Summary page on the ASTM website.2.
Thompson
, M.
, “Can Lime Be Replaced? Saying It Replaces Lime Doesn't Make it Lime
,” Masonry Construction
, ISSN 0898-6088, Vol. 13
, No. 3
, 2000
, pp. 29–32.3.
Meadowcroft
, C. D.
, “Can Lime be Replaced? Lime Alternates Are Not And Do Not Want To Be Lime!
,” Masonry Construction
, ISSN 0898-6088, Vol. 13
, No. 3
, 2000
, pp. 29–33.4.
Nordmeyer
, D. H.
, “High Pozzolan Mortars and Stuccos
,” Masonry: Opportunities for the 21st Century
, ASTM STP 1432, Throop
D.
and Klingner
R. E.
, Eds., ASTM International
, West Conshohocken, PA
, 2003
.5.
Helmuth
, R.
, Fly Ash in Cement and Concrete
, Portland Cement Association
, 1987
, pp. 117–120.6.
Ramachandran
, V. S.
, Ed., Concrete Admixtures Handbook, Properties, Science, and Technology
, Second Edition, Noyes Publications
, Mill Road, Park Ridge, NJ
, 1995
, pp. 985–994.7.
ASTM C 270, “
Standard Specification for Mortar for Unit Masonry
,” Annual Book of ASTM Standards, ASTM International
, West Conshohocken, PA.8.
ASTM C 788, “
Standard Specification for Standard Sand
,” Annual Book of ASTM Standards, ASTM International
, West Conshohocken, PA.9.
ASTM C 91, “
Standard Specification for Masonry Cement
,” Annual Book of ASTM Standards, ASTM International
, West Conshohocken, PA.10.
ASTM C 144, “
Standard Specification for Aggregate for Masonry Mortar
,” Annual Book of ASTM Standards, ASTM International
, West Conshohocken, PA.11.
ASTM C 1403, “
Standard Test Method for Rate of Water Absorption of Masonry Mortars
,” Annual Book of ASTM Standards, ASTM International
, West Conshohocken, PA.12.
Lea
, F. M.
, The Chemistry of Cement and Concrete
, Chemical Publishing Company, Inc.
, 3rd ed., 1971
, pp. 391–392.
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