1、Designation: C 1019 08Standard Test Method forSampling and Testing Grout1This standard is issued under the fixed designation C 1019; 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 parentheses
2、 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. Scope*1.1 This test method covers procedures for both field andlaboratory sampling
3、and compression testing of grout used inmasonry construction. Grout for masonry is specified underSpecification C 476.NOTE 1The testing agency performing this test method should beevaluated in accordance with Practice C 1093.1.2 The values stated in inch-pound units are to be regardedas the standard
4、.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 health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced
5、Documents2.1 ASTM Standards:2C 39/C 39M Test Method for Compressive Strength of Cy-lindrical Concrete SpecimensC 143/C 143M Test Method for Slump of Hydraulic-Cement ConcreteC 476 Specification for Grout for MasonryC511 Specification for Mixing Rooms, Moist Cabinets,Moist Rooms, and Water Storage Ta
6、nks Used in theTesting of Hydraulic Cements and ConcretesC 617 Practice for Capping Cylindrical Concrete Speci-mensC 1064/C 1064M Test Method for Temperature of FreshlyMixed Hydraulic-Cement ConcreteC 1093 Practice for Accreditation of Testing Agencies forMasonryC 1611/C 1611M Test Method for Slump
7、Flow of Self-Consolidating Concrete3. Significance and Use3.1 Grout used in masonry is a fluid mixture of cementitiousmaterials and aggregate with a high water content for ease ofplacement.3.1.1 During construction, grout is placed within or betweenabsorptive masonry units. Excess water must be remo
8、ved fromgrout specimens in order to provide compressive strength testresults more nearly indicative of the grout strength in the wall.In this test method, molds are made from masonry units havingthe same absorption and moisture content characteristics asthose being used in the construction.3.2 This
9、test method is used to either help select groutproportions by comparing test values or as a quality control testfor uniformity of grout preparation during construction.3.3 The physical exposure condition and curing of the groutare not exactly reproduced, but this test method does subjectthe grout sp
10、ecimens to absorption conditions similar to thoseexperienced by grout in the wall.NOTE 2Test results of grout specimens taken from a wall should notbe compared to test results obtained with this test method.4. Apparatus4.1 Maximum-Minimum Thermometer.4.2 Straightedge, a steel straightedge not less t
11、han 6 in.(152.4 mm) long and not less than116 in. (1.6 mm) inthickness.4.3 Tamping Rod, a nonabsorbent rod, either round orsquare in cross section nominally58 in. (15.9 mm) in dimen-sion with ends rounded to hemispherical tips of the samediameter. The rod shall be a minimum length of 12 in. (304.8mm
12、).4.4 Nonabsorbent Blocks and Spacers, nonabsorbent, rigidsquares and rectangles with side dimensions so as to achievethe desired grout specimen side dimensions and of sufficientquantity or thickness to yield the desired grout specimenheight, as shown in Fig. 1, Fig. 2, and Fig. 3.NOTE 3Nonabsorbent
13、 blocks may be of plastic, wood, or othernonabsorbent material. Certain species of wood contain sugars which1This test method is under the jurisdiction of ASTM Committee C12 on Mortarsand Grouts for Unit Masonry and is the direct responsibility of SubcommitteeC12.02 on Research and Methods of Test.C
14、urrent edition approved Feb. 1, 2008. Published March 2008. Originallyapproved in 1984. Last previous edition approved in 2007 as C 1019 07.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volum
15、e information, refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.cause retardation of cement. In order to
16、 prevent this from occurring, newwooden blocks shall be soaked in limewater for 24 h, sealed with varnishor wax, or covered with an impermeable material prior to use.4.5 Panels and plates, pieces of34 in. (19 mm) plywoodwith dimensions as needed to contain units and grout speci-mens. Soak in limewat
17、er for 24 h, seal with varnish or wax, orcover with an impermeable material prior to use. A nonabsor-bant material of equivalent stiffness to the plywood is permit-ted.PROCEDURES5. Test Specimens5.1 Each grout specimen shall have a square cross-section,3 in. (76 mm) or larger on the sides and twice
18、as high as itswidth. Dimensional tolerances shall be within 5 % of the widthselected.5.2 Test at least three specimens at each age specified.NOTE 4Frequency of sampling and age of test is to be determined bythe specifier of this test method and is usually found in the constructiondocuments.6. Mold C
19、onstruction6.1 Select a level location where the molds remain undis-turbed for up to 48 h.NOTE 5The location of specimen construction should be protectedand as free from perceptible vibration as possible.6.2 The construction of the mold shall simulate the in-situconstruction. If the grout is placed
20、between two different typesof masonry units, both types shall be used to construct themold.6.3 Form a space with a square cross-section, 3 in. (76 mm)or larger on each side and twice as high as its width, bystacking masonry units of the same type and moisture condi-tion as those being used in the co
21、nstruction. The surface of theunit in contact with the grout specimen shall not have beenpreviously used to mold specimens. Place nonabsorbentblocks, cut to proper size and of the proper thickness orquantity, at the bottom of the space to achieve the necessaryheight of specimen. Tolerance on space a
22、nd specimen dimen-sions shall be within 5 % of the specimen width. See Fig. 1,Fig. 2, and Fig. 3and accompanying notes.NOTE 6Other methods of obtaining grout specimens and specimensof different geometry have been employed in grout testing, but are notdescribed in this test method. Other methods used
23、 to obtain groutspecimens include: drilling grout-filled cores of regular units; filling coresof masonry units specifically manufactured to provide grout specimens;filling compartments in slotted corrugated cardboard boxes specificallymanufactured to provide grout specimens; and forming specimens fr
24、omdifferent sized masonry units of the same or similar material.Since test results vary with methods of forming and specimen geometry,comparative test results between the specimen described in this testmethod and the proposed specimen should be required and confined to asingle specimen shape and met
25、hod of forming.6.4 Line the masonry surfaces that will be in contact withthe grout specimen with a thin, permeable material to preventbond to the masonry units. New lining material shall be usedfor each specimen.NOTE 7The lining, such as paper towel, is used to aid in stripping thegrout specimen fro
26、m the mold. Proper installation of the lining preventsirregularly sized specimens and varying test results.6.5 Brace units to prevent displacement during grouting andcuring.7. Sampling Grout7.1 Size of SampleGrout samples to be used for slump andcompressive strength tests shall be a minimum of12 ft3
27、(0.014m3).7.2 ProcedureThe procedures used in sampling shallinclude the use of precautions that will assist in obtainingsamples that are representative of the nature and condition ofthe grout. After the final slump adjustment has been made,sample grout as the grout is being placed.7.2.1 Field Sampli
28、ngCollect two or more portions takenat regularly spaced intervals during the discharge of the middleportion of the batch. The elapsed time between obtaining thefirst and final portions of the sample shall be not more than 15min.7.2.2 Laboratory SamplingThe entire mixed batch ofgrout is the sample.NO
29、TE 8The field technician sampling, making, and curing specimensfor acceptance testing should be certified (American Concrete InstituteField Testing TechnicianGrade I, National Concrete Masonry Associa-tion Masonry Testing Technician, or equivalent). Equivalent certificationprograms should include bo
30、th written and performance examinations.7.3 Place the grout sample in a non-absorptive container andcover the top to protect the sample from the sun, wind, and anyother sources of rapid evaporation and from contamination.Transport the grout sample to the mold location. Remix thesample with a shovel
31、or trowel to ensure uniformity prior tofilling molds. Keep remaining grout sample protected untilused to fill any depression in the sample due to initial waterloss.NOTEFront masonry unit stack not shown to allow view of specimen.FIG. 1 Grout Mold (Units 6 in. (152.4 mm) or Less in Height, 214in. (57
32、.2 mm) High Brick Shown)NOTEFront masonry unit not shown to allow view of specimen.FIG. 2 Grout Mold (Units Greater than 6 in. (152.4 mm) High, 8 in.(203.2 mm) High Concrete Masonry Unit Shown)C 1019 0828. Temperature and Slump Test8.1 Measure and record the temperature of the grout samplein accorda
33、nce with Test Method C 1064/C 1064M.8.2 Begin filling the slump cone within 5 min of obtainingthe final portion of the sample.8.3 For all grout except self-consolidating grout, measureand record the slump in accordance with the requirements ofTest Method C 143/C 143M.8.4 For self-consolidating grout
34、, measure and record theslump flow in accordance with the requirements of TestMethod C 1611/C 1611M and visual stability index (VSI) inaccordance with the requirements of Test Method C 1611/C 1611M, Appendix X1.9. Compressive Test Specimen9.1 If grout from the slump or slump flow test is used for th
35、ecompressive test specimens, remix the sample. Begin filling thecompressive strength molds within 15 min of obtaining thefinal portion of the sample.9.2 For all grout except self-consolidating grout, fill themold with grout in two layers of approximately equal depth.Rod each layer 15 times with the
36、tamping rod. Rod the bottomlayer through its depth. Slightly overfill the mold. Rod thesecond layer with the tamping rod penetrating12 in. (12.7 mm)into the lower layer. Distribute the strokes uniformly over thecross section of the mold.9.3 For self-consolidating grout, fill the mold with grout inon
37、e layer and do not rod.9.4 Strike off the top surface of the specimen with astraightedge to produce a flat surface that is even with the topedge of the mold and that has no depressions or projectionslarger than18 in. (3.2 mm). Cover immediately with a dampabsorbent material such as cloth or paper to
38、wel. Keep the topsurface of the specimens damp by wetting the absorbentmaterial and covering with a nonabsorbent, nonreactive mate-rial to retain the moisture. Do not disturb the specimens.9.5 Within 30 min after filling the mold, add sufficient groutwithout rodding to fill the depression caused by
39、initial waterloss. Strike off the top surface of the specimen with astraightedge to produce a flat surface that is even with the topedge of the mold. Cover immediately with a damp absorbentmaterial such as cloth or paper towel. Keep the top surface ofthe specimen damp by wetting the absorbent materi
40、al andcovering with a nonabsorbent, nonreactive material. Do notdisturb the specimen until the molds are removed.9.6 Protect the specimens from freezing and variations intemperature. Store an indicating maximum-minimum ther-mometer with the specimens and record the maximum andminimum temperatures ex
41、perienced prior to the time thespecimens are placed in the final curing environment.10. Transportation, Curing, and Testing of the Specimens10.1 Remove the molds between 24 and 48 h after makingthe specimens.10.2 Within 30 min after removing the molds, place speci-mens in a protective container and
42、keep specimens damp.10.3 Transport field specimens to the laboratory within 8 hafter mold removal.10.4 Within 8 h after mold removal, place in a moist room,moist cabinet, or water storage tank conforming to Specifica-tion C511. Store there until day of testing.10.5 Store there until day of testing.
43、Keep specimen dampuntil tested.10.6 Cap the specimens in accordance with the applicablerequirements of Practice C 617.NOTE 9Practice C 617 refers to capping cylindrical specimens; there-fore, the alignment devices may need to be modified to ensure proper usewith the rectangular prism specimens of th
44、is method. All other sections ofPractice C 617 are applicable.10.7 Measure and record the width of each face at mid-height. Measure and record the height of each face at mid-width. Measure and record the amount out of plumb atmid-width of each face.10.8 Test the specimens in a damp condition in acco
45、rdancewith the applicable requirements of Test Method C 39/C 39M.FIG. 3 Grout Mold with Brick and Concrete Masonry UnitsC 1019 08311. Calculations11.1 Determine the average cross-sectional area by measur-ing the width of each face at its mid-height, calculating theaverage width of opposite faces, an
46、d multiplying the averages.11.2 Calculate the compressive strength by dividing themaximum load by the average cross-sectional area and expressthe result to the nearest 10 psi (69 kPa).12. Report12.1 The report shall include the following:12.1.1 Mix design,12.1.2 Slump of the grout for all grouts exc
47、ept self-consolidating grout,12.1.3 Slump flow and visual stability index (VSI) value ofthe grout for self-consolidating grout,12.1.4 Type and number of units used to form mold forspecimens,12.1.5 Description of the specimensdimensions, amountout of plumb in percent,12.1.6 Curing history, including
48、initial temperature, maxi-mum and minimum temperatures, and age of specimens whentransported to laboratory and when tested,12.1.7 Maximum load and compressive strength of eachspecimen and average compressive strength of the specimens,and12.1.8 Description of failure.13. Precision and Bias13.1 Genera
49、l:13.1.1 The masonry units used to form the mold havedifferent absorption rates and will remove slightly differentamounts of water from each specimen. Thus the standarddeviation for this test method is higher than that using anonabsorbent mold.13.1.2 The standard deviation from field specimens of groutwill be higher than that for laboratory specimens. There is lesscontrol of grout ingredients, conditions of units for moldconstruction, and initial curing environment in field-preparedspecimens.13.2 Limited test data are available for analysis at this time.Amor
