1、Designation: C1016 02 (Reapproved 2008)1C1016 14Standard Test Method forDetermination of Water Absorption of Sealant Backing(Joint Filler) Material1This standard is issued under the fixed designation C1016; the number immediately following the designation indicates the year oforiginal adoption or, i
2、n the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1 NOTEAdded research report information to Section 13 editorially in September 2010.1. Scope1.
3、1 This test method covers a laboratory procedure for determining the water absorption characteristics of sealant backing andjoint filler materials, hereinafter referred to as backing.1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units in parentheses are for inf
4、ormation only.1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other ASTMcommittees or other organizations.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof
5、 the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and Sealants3. Terminology3.1 DefinitionsRefer to Terminology C717 for t
6、he following terms used in this test method: joint filler, sealant, and sealantbacking.4. Summary of Test Method4.1 The mass of three measured specimens of backing is determined. The specimens are then placed in room temperature waterfor 24 h after which the specimens are removed from the water and
7、their mass measured. The change in mass is calculated, andthe result is expressed as a change in mass per unit of volume.4.2 ProcedureAmeasures the maximum amount of water that can enter the backing. Procedure B measures the amount of waterthat can enter the backing with the backing cut ends sealed.
8、5. Significance and Use5.1 This test method determines the amount of water absorbed by a backing material. Water absorption by the backing mayaffect sealant performance.5.2 This test method is also useful when designating proper storage of back up material and in determining appropriateprecautions w
9、hen using backing materials.5.3 The specifier, using this test method, can exercise judgment in the selection of backing materials based on water absorptioncharacteristics.1 This test method is under jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility o
10、f Subcommittee C24.20 on General TestMethods.Current edition approved May 1, 2008Jan. 1, 2014. Published June 2008February 2014. Originally approved in 1984. Last previous edition approved in 20022008 asC1016 02.C1016 02 (2008)1. DOI: 10.1520/C1016-02R08E01.10.1520/C1016-14.2 For referencedASTM stan
11、dards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an A
12、STM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as publishe
13、d by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16. Apparatus6.1 Balance, sensitive to 0.1 g (0.004 oz).6.2 Rule, steel, graduated to 1.0 mm (;116 in.).6.3 Shallow Pan for Water, at l
14、east 50 mm (2 in.) deep and 350 mm (14 in.) long.6.4 Paraffn Wax.7. Sampling7.1 Take samples from manufactured product. The number of samples for each lot shall be agreed upon between the purchaserand the seller. A sample shall consist of three test specimens.7.2 Sample selection is important, there
15、fore, the sample should be representative of typical backing production. Care should beexercised in choosing samples that have not been damaged by inappropriate storage or handling.7.3 Samples should be of uniform shape for their length to enable accurate calculation of volume.8. Test Specimens8.1 A
16、test specimen is a piece of backing 30065 mm (1260.25 in.) in length. Ideally the cross-sectional backing area shouldbe from 2 to 3 cm2 (0.3 to 0.5 in.2). Cut three test specimens from each sample.9. Conditioning9.1 Condition the test specimens at 23 6 2C (73 6 3F)standard conditions as listed in C7
17、17 and 50 6 5 % relative humidityfor a minimum of 24 h prior to testing, provided the specimens feel and appear dry. Specimens that appear damp should be driedin accordance with the manufacturers recommendations before the 24 h conditioning period starts.10. Procedure10.1 Procedure A:10.1.1 Measure
18、the mass of each conditioned specimen to the nearest 0.1 g (0.004 oz) and record.10.1.2 Measure and record the length of each specimen to the nearest 1 mm (116 in.).10.1.3 Measure and record the appropriate end dimensions of each specimen to the nearest 1 mm (116 in.), to permit across-sectional are
19、a calculation.10.1.3.1 The procedures in 10.1.2 and 10.1.3 are critical to the precision and bias of the test. Care is required to obtain accuratemeasurements.10.1.4 Submerge the entire specimen in water in a shallow pan. Secure the specimen so the top side in the long dimension, isapproximately 25
20、mm (1 in.) below surface.10.1.5 After immersion for 24 h, remove the specimen by picking it up 3 in. (75 mm) from the ends and place it immediatelyon the weighing platform. Do not press or squeeze the specimen. Within the next 1 min, record the mass of the specimen. Withinthe next 1 min, record the
21、mass of the specimen to the nearest 0.1 g (0.004 oz).10.1.5.1 The weighing platform on the balance should be large enough to support the entire specimen and serve as a tray to catchany water that may leave the specimen during mass determination.10.2 . Procedure B:10.2.1 Measure and record the length
22、 of each specimen to the nearest 1 mm (116 in.).10.2.2 Measure and record the appropriate end dimensions of each specimen to the nearest 1 mm (116 in.), to permit across-sectional area calculation.10.2.2.1 The procedures in 10.2.1 and 10.2.2 are critical to the precision and bias of the test. Care t
23、o obtain accuratemeasurements is required.10.2.3 Dip the cut ends of the specimen to a depth of 3.0 mm (18 in.) in melted paraffin wax at 65 6 5C, remove and let cool.Repeat the dipping three times until the ends are completely sealed by approximately 1 mm (116 in.) of paraffin wax on each cutend.10
24、.2.4 After the wax cools, measure the mass of each conditioned specimen to the nearest 0.1 g (0.004 oz) and record.10.2.5 Submerge the entire specimen in water in a shallow pan. Secure the specimen so the top side, in the long dimension, isapproximately 25 mm (1 in.) below the surface.10.2.6 After i
25、mmersion for 24 h, remove the specimen by picking it up 3 in. (75 mm) from the ends and place it immediatelyon the weighing platform. Do not press or squeeze the specimen. Within the next 1 min, record the mass of the specimen to thenearest 0.1 g (0.004 oz).10.2.6.1 The weighing platform should be l
26、arge enough to support the entire specimen and serve as a tray to catch any waterthat may leave the specimen during mass determination.C1016 14211. Calculation11.1 Calculate each specimens dry cross-sectional area (A0) using the appropriate formula for the geometry of the cross-sectionshape.11.2 Cal
27、culate the dry, original volume, (V0), as follows:V05103A0where:V0 = original dry volume, cm3 (in.3),A0 = cross-sectional area cm2 (in.2), and10 = original length, cm (in.).11.3 Calculate water absorption as a mass per unit volume for each specimen as follows:W5m02m1V0where:W = water absorption, g/c
28、m3 (oz/in.3),m1 = initial mass, g (oz),m0 = final mass, g (oz), andV0 = initial dry volume, cm3 (in.3)11.4 For purposes of calculation it is assumed that, at 23 6 2C (73 6 3F) and atmospheric pressure, 1 g (0.035 oz) of wateroccupies 1 cm3 (0.061 in.3) in volume.11.5 Calculate the sample average wat
29、er absorption as follows:Wa5W11W21W33where:Wa = average water absorption, g/cm3 (oz/in.3),W1 = Specimen 1 water absorption, g/cm3 (oz/in.3),W2 = Specimen 2 water absorption, g/cm3 (oz/in.3), andW3 = Specimen 3 water absorption, g/cm3 (oz/in.3).12. Report12.1 Report the following information:12.1.1 N
30、ame and description of the tested backing material,12.1.2 Date of receipt of the backing material,12.1.3 Procedure A or B, and12.1.4 Individual specimen and sample average water absorption values.13. Precision and Bias313.1 These data were developed using 1.59 cm (58 in.) diameter closed cell, open
31、cell, and soft-type backing material, thereforeresults may vary with different diameter backing materials.13.1.1 Procedure A:13.1.1.1 The repeatability (within a given laboratory) interval for three materials tested by four laboratories is 0.044 g/cm3(0.025 oz/in.3). In future use of this test metho
32、d, the difference between two test results obtained in the same laboratory on the samematerial will be expected to exceed 0.044 g/cm3 (0.025 oz/in.3) only about 5 % of the time.13.1.1.2 The reproducibility (between given laboratories) interval for three materials tested by four laboratories is 0.387
33、 g/cm3(0.222 oz/in.3). In future use of this test method, the difference between test results obtained in a different laboratory on the samematerial will be expected to exceed 0.387 g/cm3 (0.222 oz/in.3) only about 5 % of the time.13.1.2 Procedure B:13.1.2.1 The repeatability (within a given laborat
34、ory) interval for three materials tested by four laboratories is 0.024 g/cm3(0.014 oz/in.3). In the future use of this test method, the difference between two test results obtained in the same laboratory on thesame material will be expected to exceed 0.024 g/cm3 (0.014 oz/in.3) only about 5 % of the
35、 time.13.1.2.2 The reproducibility (between given laboratories) interval for three materials tested by four laboratories is 0.387 g/cm3(0.217 oz/in.3). In future use of this test method, the difference between two test results obtained in a different laboratory on thesame material will be expected t
36、o exceed 0.387 g/cm3 (0.217 oz/in.3) only about 5 % of the time.3 Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR:C24-1014 and RR:C24-1037.C1016 14314. Keywords14.1 sealant; sealant backing; water absorptionASTM International ta
37、kes no position 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 r
38、esponsibility.This 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 addres
39、sed to ASTM International 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 th
40、e 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 ASTM website (www.astm.org/COPYRIGHT/).C1016 144
