ASTM C207-91(1997)

Standard Specification for Hydrated Lime for Masonry Purposes

STANDARD published on 10.11.1997

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The information about the standard:

Designation standards: ASTM C207-91(1997)
Note: WITHDRAWN
Publication date standards: 10.11.1997
SKU: NS-12535
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Annotation of standard text ASTM C207-91(1997) :

Keywords:

hydrated lime, masonry, plasticity, popping and pitting, residue, stucco, Type N, Type NA, Type S, Type SA, unhydrated oxides, water retention, air entraining, ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

Additional information

1. Scope

1.1 This specification covers four types of hydrated lime. Types N and S are suitable for use in mortar, in scratch and brown coats of cement plaster, for stucco, and for addition to portland-cement concrete. Types NA and SA are air-entrained hydrated limes that are suitable for use in any of the above uses where the inherent properties of lime and air-entrainment are desired. The four types of lime sold under this specification shall be designated as follows:

1.1.1 Type N- Normal hydrated lime for masonry purposes.

1.1.2 Type S- Special hydrated lime for masonry purposes.

1.1.3 Type NA- Normal air-entraining hydrated lime for masonry purposes.

1.1.4 Type SA- Special air-entraining hydrated lime for masonry purposes.

Note 1-Type S, special hydrated lime, and Type SA, special air-entraining hydrated lime, are differentiated from Type N, normal hydrated lime, and Type NA, normal air-entraining hydrated lime, principally by their ability to develop high, early plasticity and higher water retentively, and by a limitation on their unhydrated oxide content. Note 2-For normal (Type N) and special (Type S) finishing hydrated lime, refer to Specification C206. Note 3-Some building codes prohibit the use of air-entraining materials in mortar, because of the accompanying reduction in bond and compressive strength. Where increased freeze-thaw resistance is important, air-entraining may be beneficial. Air-entraining lime should not be used as a finishing lime.

2. Referenced Documents

C25-24	Standard Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime
C50-00	Standard Practice for Sampling, Sample Preparation, Packaging, and Marking of Lime and Limestone Products
C110-24	Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
C206-14(2022)	Standard Specification for Finishing Hydrated Lime
C226-22	Standard Specification for Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic Cement
C778-21	Standard Specification for Standard Sand
C1489-15(2022)	Standard Specification for Lime Putty for Structural Purposes

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