ASTM C199-1984(2016) Standard Test Method for Pier Test for Refractory Mortars《耐火砂浆墩试验的标准试验方法》.pdf

1、Designation: C199 84 (Reapproved 2016)Standard Test Method forPier Test for Refractory Mortars1This standard is issued under the fixed designation C199; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n

2、umber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This test method covers the determination of refra

3、ctori-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 m

4、athematicalconversions 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

5、 health 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. Significa

6、nce 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

7、 result 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-al

8、umina 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 dri

9、ll 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

10、of 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 contai

11、ner, 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 wi

12、th 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

13、 of not less than 16 h before preparing the testspecimen.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 June 1, 2016. Published June 2016. Originallyapproved in 1945. Last p

14、revious edition approved in 2011 as C199 84 (2011).DOI: 10.1520/C0199-84R16.2For 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 Summary page onth

15、e ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States17. Procedure7.1 Construction of Pier: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

16、 these the two half-brick 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

17、with the aid of the spacing 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 c

18、oated face in contact 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

19、 that actually required 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 t

20、he side where the rods 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 ro

21、om temperature for 24h, 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 s

22、chedule table in Test Method C113)Super-dutyHigh-dutySchedule C (2910F (1600C)Schedule C, except that upon reaching 72730F(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 Ti

23、me FromStart of Heating, 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

24、 of the heat treatment.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 Internat

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28、ds, at the address shown 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 84 (2016)2