Standard Test Method for Pier Test for Refractory Mortars
A multiple brick pier is made with 1/8" thick vertical and horizontal joints. The assembly is air and oven dried, and then fired for 5 hours at the specified temperature. If the mortar flows from the joints during firing, it fails the test. At least 10 lbs. of mortar should be submitted of analysis.
This test method is used to estimate the application temperature limits of a refractory mortar and will establish its classification.
This test method will be regarded as a pass or fail test because the results are based on observations of whether the mortar flowed from the joints as a result of the heat treatment used.
Results obtained by this test method will not agree with those obtained in service when heating is done from only one side.
This test method is not applicable for testing nonaqueous mortars.
1.1 This test method covers the determination of refractoriness of all types of refractory mortar by heating a pier of brick laid up with the test mortar to learn whether the prescribed heat treatment causes the mortar to flow out of the joints.
Extracted, with permission, from ASTM C199 Standard Test Method for Pier Test for Refractory Mortars, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the standard may be purchased from ASTM International, phone 610-832-9555, e-mail: firstname.lastname@example.org, website:www.astm.org.
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