ASTM C1403-2012 Standard Test Method for Rate of Water Absorption of Masonry Mortars《圬工砂浆吸水率的标准试验方法》.pdf
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1、Designation: C1403 06C1403 12Standard Test Method forRate of Water Absorption of Masonry Mortars1This standard is issued under the fixed designation C1403; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This test method covers a standardized laboratory procedure for determining the relative water absorption by capillaryuptake (wickin
3、g) characteristics of masonry mortars. This test method is not applicable for determining the effectiveness of waterrepellent coatings.1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are forinformation only.No other units of measurement
4、 are included in this standard.1.2.1 Inch-pound units are given in parentheses for temperature specification and are for information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to
5、 establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube Specimens)C270 Specification for
6、Mortar for Unit MasonryC305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic ConsistencyC511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of HydraulicCements and ConcretesC778 Specification for SandC1180 Term
7、inology of Mortar and Grout for Unit MasonryC1437 Test Method for Flow of Hydraulic Cement Mortar3. Terminology3.1 DefinitionsFor definitions of terms used in this test method, refer to Terminology C1180.4. Significance and Use4.1 This test method provides a laboratory procedure for determining the
8、relative water absorption properties over time ofmortars used for masonry construction. Because the specimens are made under laboratory conditions and do not take into accountthe effect of the masonry substrate or field mixing procedures, this method is not intended for field use. Data generated fro
9、m thistest method may be useful for determining the relative effectiveness of water repellent admixtures or the effect of other admixturesor mortar components on the water repellency of a mortar. However, use caution in interpreting the results. While the resistanceof masonry to water penetration ma
10、y be related to the water absorption of the mortar, it also depends on other factors, such as theworkmanship, extent of bond, and the properties of the masonry units and mortar.5. Apparatus5.1 BalanceA balance sensitive readable and accurate to 0.1 g.1 This test method is under the jurisdiction of A
11、STM Committee C12 on Mortars and Grouts for Unit Masonryand is the direct responsibility of Subcommittee C12.02on Research and Methods of Test.Current edition approved Dec. 15, 2006Dec. 15, 2012. Published January 2007January 2013. Originally approved in 1999. Last previous edition approved in 20052
12、006as C1403 05.C1403 06. DOI: 10.1520/C1403-06.10.1520/C1403-12.2 For referencedASTM standards, 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 websi
13、te.This document is not an ASTM standard and is intended only to provide the user of an ASTM 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
14、editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-
15、2959. United States15.2 Uptake ContainerA watertight container with a minimum cross sectional area that is at least 50 % greater than the totalarea of the specimens test surface(s) and a minimum depth of 75 mm (3 in.). mm. Provide a cover for the container to minimizeevaporation.5.2.1 Use specimen s
16、upports that allow a minimum of 3 mm (0.12 in.) clearance from the bottom of the container and that covera maximum of 10 % of the area of the specimens test surface. Use supports made of a material that does not float in water andthat does not rust, expand, or contract as a result of water exposure.
17、5.2.2 The container shall be flat so that when a specimen is set on the supports the water level as specified in 7.4 shall not varyby more than 1 mm (0.04 in.) from one end of the specimen to the opposite end.5.3 Specimen MoldsMetal nominal 50-mm or 2-in. cube specimen molds with removable plastic w
18、ater tight disposable liners.The plastic liners shall be rigid enough to retain their shape when free standing and filled with mortar.NOTE 1For this test method, actual specimen dimensions are measured and used to calculate absorption per a unit area; therefore, 2-in. cube specimenmolds can be used
19、interchangeably with 50-mm cube specimen molds.5.4 SpoonA metal spoon approximately 230 mm (9 in.) in length and with a bowl approximately 100 mm (4 in.) in length.5.5 StraightedgeA steel straightedge not less than 150 mm (6 in.) long and approximately 1.5-3.0 mm (1.5 116to 18 in.)3.0mm thick.5.6 Ta
20、mperA tamper made of a nonabsorptive, nonabrasive, nonbrittle material such as a rubber compound having a ShoreA durometer hardness of 80 6 10, or seasoned oak wood rendered nonabsorptive by immersion for 15 minutes in paraffin atapproximately 200C (392F), and having a cross section of 13 by 25 mm (
21、0.5 by 1.0 in.) and a convenient length of 127 to 152mm (5 to 6 in.). mm. The tamping face of the tamper shall be flat and at right angles to the length of the tamper.5.7 Trowel, having a steel blade 100 to 150 mm (4 to 6 in.) in length, with straight edges.5.8 Tapping StickA hardwood rod, having a
22、diameter of 16 mm (58 in.) and a length of 150 mm (6 in.).mm.5.9 Timing DeviceA suitable timing device capable of indicating elapsed time up to 24 h to the nearest 1 min.5.10 CalipersSuitable calipers with parallel jaws for measuring the dimensions of the hardened specimens to the nearest 0.5mm.6. S
23、pecimen Preparation6.1 Prepare mortar according to Practice C305, adjusting the water as necessary to obtain a flow of 110 6 5 as determined byTest Method C1437. Record the flow. If an admixture is being added to the mortar, the dosage rate, time of addition, and mixingsequence shall follow the manu
24、facturers recommendation. If there is no manufacturers recommendation, add a liquid admixturewith the water and add a dry admixture with the cementitious components. Record the type and amount of each material by weightused in the mortar. In addition, record the type and amount by weight or volume o
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