1、Designation: C 199 84 (Reapproved 2005)Standard Test Method forPier Test for Refractory Mortars1This standard is issued under the fixed designation C 199; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method covers the determination of refract
3、ori-ness of all types of refractory mortar by heating a pier of bricklaid up with the test mortar to learn whether the prescribed heattreatment causes the mortar to flow out of the joints.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mat
4、hematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and h
5、ealth practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C24 Test Method for Pyrometric Cone Equivalent (PCE) ofFireclay and High Alumina Refractory MaterialsC113 Test Method for Reheat Change of Refractory Brick3. Significanc
6、e and Use3.1 This test method is used to estimate the applicationtemperature limits of a refractory mortar and will establish itsclassification.3.2 This test method will be regarded as a pass or fail testbecause the results are based on observations of whether themortar flowed from the joints as a r
7、esult of the heat treatmentused.3.3 Results obtained by this test method will not agree withthose obtained in service when heating is done from only oneside.3.4 This test method is not applicable for testing nonaque-ous mortars.4. Apparatus4.1 BrickThree 9-in. (228-mm) straight fireclay or high-alum
8、ina brick, conforming to the following respective require-ments for refractories:Class of Mortar to be Tested PCE,ANot Lower than Cone No.High-alumina 36Super-duty 33High-duty 3112Medium-duty 29ASee Test Method C24.4.2 Spacing RodsNine joint-thickness spacing rods madeof332-in. (2-mm) diameter drill
9、 rod, cut into 6-in. (152-mm)lengths.4.3 Drying Oven, to accommodate five 9-in. (228-mm)straight brick standing on end, for use at 220 to 230F (105 to110C).4.4 Furnace, capable of heating the test pier uniformly atone of four temperatures, the highest being 3100F (1705C).5. Sampling5.1 The sample of
10、 mortar evaluated will be a prepared testsample of about 10 lb (4.5 kg). If a larger quantity is presented,ranging in size up to a commercial container, it must bereduced in size to about 10 lb (4.5 kg) for evaluation. To dothis, the contents of the container shall be thoroughly mixed inthe containe
11、r, or transferred without loss to a clean imperviousreceptacle of larger size and mixed thoroughly to a uniformconsistency.A10 lb (4.5 kg) test sample shall then be taken andsealed in a metal or glass container.6. Test Specimens6.1 The test mortar shall be of troweling consistency. Whenworking with
12、wet mortars not at this consistency smallamounts of water will be added, followed by thorough mixinguntil a troweling consistency is achieved. For dry mortars, themortar shall be thoroughly mixed with water to a trowelingconsistency, and allowed to stand in a suitable sealed containerfor a period of
13、 not less than 16 h before preparing the testspecimen.7. Procedure7.1 Construction of Pier:1This test method is under the jurisdiction of ASTM Committee C08 onRefractories and is the direct responsibility of Subcommittee C08.01 on Strength.Current edition approved Dec. 1, 2005. Published December 20
14、05. Originallyapproved in 1945. Last previous edition approved in 2000 as C 199 84 (2000).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Sum
15、mary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.1.1 The pier shall consist of two whole brick and twohalf-brick laid flat. The top and bottom brick shall be wholebrick, and between these the two half-br
16、ick shall be placed sothat the original ends will form a vertical joint in the center ofthe pier. The class of mortar being tested shall determine therefractoriness of the brick to be used, as prescribed in 4.1.Uniformity in thickness of the joints in the pier shall beattained with the aid of the sp
17、acing rods.7.1.2 Apply the mortar to the large face of one of the wholebrick, after which place four spacing rods across it,12 in. (13mm) from the ends and12 in. on either side of the center.7.1.3 Coat a large face and the original end of a half-brickwith mortar and place the coated face in contact
18、with the rodson the lower brick. Prepare the other half-brick in the samemanner, and when putting it in position to complete the verticaljoint, place a spacing rod across and in the center of that joint.Also use four rods to form the top horizontal joint. Use mortarin excess of that actually require
19、d to form the joints.7.1.4 Adjust the rods so that their ends are flush with oneside of the pier. Firmly press or rub the brick units together sothat the joints formed will not exceed18 in. (3 mm) inthickness. Carefully remove the excess mortar from the joints,particularly on the side where the rods
20、 are flush.7.1.5 Remove the spacing rods as soon as the mortar hasdeveloped an initial set, to prevent bulging of the mortar fromthe joint.7.2 Drying and Heat Treatment of Pier:7.2.1 After constructing the pier and removing the spacingrods, allow it to air-dry undisturbed at room temperature for 24h
21、, and then oven-dry at 220 to 230F (105 to 110C) for 18 h(overnight).7.2.2 Carry out the heat treatment for each of the classes ofmortar in accordance with all applicable portions of TestMethod C113, as shown in the following table:Class of MortarHeating Schedule(from heating schedule table in Test
22、Method C113)Super-dutyHigh-dutySchedule C (2910F (1600C)Schedule C, except that upon reaching 2730F(1500C) in approximately 3 h, that temperatureshall be maintained for 5 hMedium-duty Schedule B (2550F (1400C)For high-alumina mortars the schedule shall be as follows:Elapsed Time FromStart of Heating
23、, hTemperature,F (C)1 1500 (815)2 2300 (1260)3 2750 (1510)4 3010 (1655)5 3100 (1705)Maintain for 5 h8. Report8.1 The report shall include the following:8.1.1 Class of mortar for which the sample was tested, and8.1.2 Whether or not the mortar flowed out of the joints asa result of the heat treatment.
24、9. Precision and Bias9.1 No justifiable statement of precision and bias is possiblebecause the results of the test are word descriptions of visualobservations rather than numerical values based on finitemeasurements.10. Keywords10.1 mortar; pier test; refractoriesASTM International takes no position
25、 respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.T
26、his standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM In
27、ternational Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address show
28、n below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C 199 84 (2005)2
