ASTM C1019-2018 Standard Test Method for Sampling and Testing Grout《灌浆取样和试验的标准试验方法》.pdf

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1、Designation: C1019 16C1019 18Standard Test Method forSampling and Testing Grout1This standard is issued under the fixed designation C1019; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in paren

2、theses 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. Scope*Scope1.1 This test method covers procedures for both field and labo

3、ratory sampling and compression testing of grout used in masonryconstruction. Grout for masonry is specified under Specification C476.NOTE 1The testing agency performing this test method should be evaluated in accordance with Practice C1093.1.2 The values stated in inch-pound units are to be regarde

4、d as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.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

5、 of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardizationestablish

6、ed in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C39/C39M Test Method for Compressive Strength of Cylindrical Concre

7、te SpecimensC143/C143M Test Method for Slump of Hydraulic-Cement ConcreteC476 Specification for Grout for MasonryC511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of HydraulicCements and ConcretesC617 Practice for Capping Cylindrical Concre

8、te SpecimensC1064/C1064M Test Method for Temperature of Freshly Mixed Hydraulic-Cement ConcreteC1093 Practice for Accreditation of Testing Agencies for MasonryC1611/C1611M Test Method for Slump Flow of Self-Consolidating Concrete3. Significance and Use3.1 Grout used in masonry is a fluid mixture of

9、cementitious materials and aggregate with a high water content for ease ofplacement.3.1.1 During construction, grout is placed within or between absorptive masonry units. Excess water must be removed fromgrout specimens in order to provide compressive strength test results more nearly indicative of

10、the grout strength in the wall. Inthis test method, molds are made from masonry units having the same absorption and moisture content characteristics as thosebeing used in the construction.3.2 This test method is used to either help select grout proportions by comparing test values or as a quality c

11、ontrol test foruniformity of grout preparation during construction.1 This test method is under the jurisdiction of ASTM Committee C12 on Mortars and Grouts for Unit Masonry and is the direct responsibility of Subcommittee C12.02on Research and Methods of Test.Current edition approved Jan. 1, 2016Jan

12、. 1, 2018. Published January 2016February 2018. Originally approved in 1984. Last previous edition approved in 20142016 asC1019 14.C1019 16. DOI: 10.1520/C1019-16.10.1520/C1019-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org.

13、 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 ASTM standard an indication of what changes have been made to the previous version. Becauseit ma

14、y 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 published by ASTM is to be considered the official document.*A Summary of Changes section appears at th

15、e end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.3 The physical exposure condition and curing of the grout are not exactly reproduced, but this test method does subject thegrout specimens to absorption condition

16、s similar to those experienced by grout in the wall.NOTE 2Test results of grout specimens taken from a wall should not be compared to test results obtained with this test method.4. Apparatus4.1 Maximum-Minimum Thermometer.4.2 Straightedge, a steel straightedge not less than 6 in. (152.4 mm) long and

17、 not less than 116 in. (1.6 mm) in thickness.4.3 Tamping Rod, a round, straight, steel rod with a diameter of 38 6 116 in. (10 6 2 mm) and a length of 12 6 4 inches. (3006 100 millimetres). The rod shall have the tamping end or both ends rounded to a hemispherical tip of the same diameter as therod.

18、4.4 Nonabsorbent Blocks and Spacers, nonabsorbent, rigid squares and rectangles with side dimensions so as to achieve thedesired grout specimen side dimensions and of sufficient quantity or thickness to yield the desired grout specimen height, as shownin Fig. 1, Fig. 2, and Fig. 3.NOTE 3Nonabsorbent

19、 blocks may be of plastic, wood, or other nonabsorbent material. Certain species of wood contain sugars which cause retardationof cement. In order to prevent this from occurring, new wooden blocks shall be soaked in limewater for 24 h, sealed with varnish or wax, or coveredwith an impermeable materi

20、al prior to use.4.5 Framing Square, a framing square not less than 6 in. (150 mm) long and not less than 116 in. (2 mm) in thickness.4.6 Panels and plates, pieces of 34 in. (19 mm) plywood with dimensions as needed to contain units and grout specimens. Soakin limewater for 24 h, seal with varnish or

21、 wax, or cover with an impermeable material prior to use. A nonabsorbant material ofequivalent stiffness to the plywood is permitted.PROCEDURES5. Test Specimens5.1 Each grout specimen shall have a square cross-section, 3 in. (76 mm) or larger on the sides and twice as high as its width.Dimensional t

22、olerances shall be within 5 % of the width selected.5.2 Test at least three specimens at each age specified.NOTE 4Frequency of sampling and age of test is to be determined by the specifier of this test method and is usually found in the constructiondocuments.5. Grout Specimen Molds5.1 Molds from Mas

23、onry Units:5.1.1 Select a level location where the molds remain undisturbed for up to 48 h.NOTE 4The location of specimen construction should be protected and as free from perceptible vibration as possible.5.1.2 The construction of the mold shall simulate the in-situ construction. If the grout is pl

24、aced between two different types ofmasonry units, both types shall be used to construct the mold.5.1.3 Form a space with a square cross-section, 3 in. (76 mm) or larger on each side and twice as high as its width, bystackingspecimen molds by arranging masonry units of the same type and moisture cond

25、ition as those being used in theconstruction. The surface of the unitunits in contact with the grout specimen shall not have been previously used to mold thespecimens. Place nonabsorbent blocks, a non-absorbent block as described in 4.4, cut to the proper size and of the proper thicknessor quantity,

26、 at the bottom of the space to achieve the necessary height of specimen. Tolerance on space and specimen dimensionsshall be within 5 % of the specimen width. Seethe specimen. Specimen molds Fig. 1,shall Fig. 2, andcomply with Fig. 3 andaccompanying notes.the following:5.1.3.1 Molds shall have a cros

27、s-section that is nominally square.5.1.3.2 Molds shall have a width of 3.0 in. (76 mm) to 3.75 in. (95 mm).5.1.3.3 Molds shall have a height of at least twice the width (see Note 5).FIG. 1 Example of Grout Mold (Units 6 in. (152.4 mm) or Less in Height, 214 in. (57.2 mm) High Brick Shown)C1019 182NO

28、TE 5The final specimen height requirement is defined in 5.1.3 as being 1.75 to 2.0 times the specimen width. The intent of the standard is to targeta specimen height two times the specimen width while allowing some tolerance in those cases where the specimen would need to be cut down in heightto mee

29、t the perpendicularity requirements. Having a mold that has a height at least twice the specimen width allows the final specimen to be meet therequirement or be cut to meet the requirement.5.1.4 Line the masonry surfaces that will be in contact with the grout specimen with a thin, permeable material

30、 to prevent bondto the masonry units. New lining material shall be used for each specimen.NOTE 6The lining, such as paper towel, is used to aid in stripping the grout specimen from the mold. Proper installation of the lining preventsirregularly sized specimens and varying test results.5.1.5 See Figs

31、. 1-3 and accompanying notes for example of mold construction that conform with 5.1.2, 5.1.3, and 5.1.4.5.1.6 Brace units to prevent displacement during grouting and curing.5.2 Alternative MethodsAlternative methods of forming the specimens shall be used only with the approval of the specifier.Such

32、approval shall be based on comparative testing of grout specimens constructed from molds as described in 6.15.1 and thealternative method. Approval shall be limited to a single specimen shape, method of forming, masonry units used, and grout mix.A conversion factor based on comparative testing of a

33、minimum of ten pairs of specimens shall be used to modify results fromalternative methods. The coefficient of variation of test results of specimens formed by the alternative method shall be less thanor equal to that of the specimens formed in accordance with 6.15.1.NOTE 7Other methods of obtaining

34、grout specimens and specimens of different geometry have been employed in grout testing, but are not describedin this test method. Other methods used to obtain grout specimens include: drilling grout-filled cores of regular units; filling cores of masonry unitsspecifically manufactured to provide gr

35、out specimens; filling compartments in slotted corrugated cardboard boxes specifically manufactured to providegrout specimens; and forming specimens from different sized masonry units of the same or similar material.Since test results vary with methods of forming the specimen, specimen geometry, and

36、 grout mix, comparative test results between specimens madewith molds described in 6.15.1 and specimens made with alternative methods are required and confined to a single specimen shape, method of forming,masonry units used, and grout mix.6. Test Specimens6.1 Specimens shall comply with the followi

37、ng:6.1.1 Specimens shall have a nominally square cross section.6.1.2 Specimens shall have an average specimen width between 3 in. (76 mm) and 3.75 in. (95 mm).6.1.3 Specimens shall have a height before capping between 1.75 and 2.0 times the specimen width.6.1.4 For each specimen, the difference betw

38、een any width measurement and the average width for that specimen shall notexceed 18 in. (3.2 mm).6.1.5 Neither end of the test specimen shall depart from perpendicularity to the vertical axis by more than 1 degree(approximately equivalent to 18 in. in 6 in.) (1 mm in 50 mm).6.1.6 Specimens shall ha

39、ve side surfaces that are plane to within 18 in. in 6 in. (1 mm in 50 mm). See Fig. 4.NOTE 8Subsection 10.7 provides for cutting or grinding the top or bottom of hardened specimens to achieve dimensional requirements.6.2 Test at least three specimens at each age specified.NOTE 9Frequency of sampling

40、 and age of test is to be determined by the specifier of this test method and is usually found in the constructiondocuments.7. Sampling Grout7.1 Size of SampleGrout samples to be used for slump and compressive strength tests shall be a minimum of 12 ft3 (0.014 m3).7.2 ProcedureThe procedures used in

41、 sampling shall include the use of precautions that will assist in obtaining samples thatare representative of the nature and condition of the grout. After the final slump adjustment has been made, sample grout as thegrout is being placed.7.2.1 Field SamplingCollect two or more portions taken at reg

42、ularly spaced intervals during the discharge of the middleportion of the batch. The elapsed time between obtaining the first and final portions of the sample shall be not more than 15 min.7.2.2 Laboratory SamplingThe entire mixed batch of grout is the sample.NOTE 10The field technician sampling, mak

43、ing, and curing specimens for acceptance testing should be certified (American Concrete Institute FieldFIG. 2 Example of Grout Mold (Units Greater than 6 in. (152.4 mm) High, 8 in. (203.2 mm) High Concrete Masonry Unit Shown)C1019 183Testing TechnicianGrade I, National Concrete Masonry Association M

44、asonry Testing Technician, or equivalent). Equivalent certification programsshould include both written and performance examinations.7.3 Place the grout sample in a non-absorptive container and cover the top to protect the sample from the sun, wind, and anyother sources of rapid evaporation and from

45、 contamination. Transport the grout sample to the mold location. Remix the samplewith a shovel or trowel to ensure uniformity prior to filling molds. Keep remaining grout sample protected in a covered,non-absorptive container until used to fill any depression in the sample due to initial water loss.

46、8. Temperature and Slump Test8.1 Measure and record the temperature of the grout sample in accordance with Test Method C1064/C1064M.8.2 Begin filling the slump cone within 5 min of obtaining the final portion of the sample.8.3 For all grout except self-consolidating grout, measure and record the slu

47、mp in accordance with the requirements of TestMethod C143/C143M.8.4 For self-consolidating grout, measure and record the slump flow in accordance with the requirements of Test MethodC1611/C1611M and visual stability index (VSI) in accordance with the requirements of Test Method C1611/C1611M, Appendi

48、xX1.FIG. 3 Example of Grout Mold with Brick and Concrete Masonry UnitsFIG. 4 Out-of-plane MeasurementC1019 1849. Compressive Test Specimen9.1 If grout from the slump or slump flow test is used for the compressive test specimens, remix the sample. Begin filling thecompressive strength molds within 15

49、 min of obtaining the final portion of the sample.9.2 For all grout except self-consolidating grout, fill the mold with grout in two layers of approximately equal depth. Rod eachlayer 15 times with the tamping rod. Rod the bottom layer through its depth. Slightly overfill the mold. Rod the second layer withthe tamping rod penetrating approximately 12 in. (12.7 mm) into the lower layer. Distribute the strokes uniformly over the crosssection of the mold.9.3 For self-consolidating grout, fill the mold with grout in one layer and do not rod.9.4 Strike