ASTM C1019-2011 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:C101909 Designation: C1019 11Standard 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 num

2、ber 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 Department of Defense.1. Scope*1.1 This test method covers procedures for both field and la

3、boratory 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 regar

4、ded 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 us

5、er 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:2C39/C39M Test Method for Compressive Strength of Cylindrical Concrete SpecimensC143/C143M Test Method for Slump of

6、 Hydraulic-Cement ConcreteC476 Specification for Grout for MasonryC511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing ofHydraulic Cements and ConcretesC617 Practice for Capping Cylindrical Concrete SpecimensC1064/C1064M Test Method for Temper

7、ature 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 cementitious materials and aggregate with a hig

8、h 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 the grout strength in the wall. Inthis test met

9、hod, 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 control test foruniformity of grout preparation

10、during construction.3.3 The physical exposure condition and curing of the grout are not exactly reproduced, but this test method does subject thegrout specimens to absorption conditions similar to those experienced by grout in the wall.NOTE 2Test results of grout specimens taken from a wall should n

11、ot be compared to test results obtained with this test method.1This 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, 2009. Publish

12、ed February 2009. Originally approved in 1984. Last previous edition approved in 2008 as C101908a. DOI:10.1520/C1019-09.Current edition approved Feb. 15, 2011. Published March 2011. Originally approved in 1984. Last previous edition approved in 2009 as C1019 09. DOI:10.1520/C1019-11.2For referenced

13、ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.1This document is not an ASTM standard and is intended only to provide the

14、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 editions as appropriate. In all cases only the current versionof the standard

15、 as published by ASTM is to be considered the official document.*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.4. Apparatus4.1 Maximum-Minimum Thermometer .4.2 Straigh

16、tedge, a steel straightedge not less than 6 in. (152.4 mm) long and not less than116 in. (1.6 mm) in thickness.4.3 Tamping Rod, a nonabsorbent rod, either round or square in cross section nominally58 in. (15.9 mm) in dimension with endsrounded to hemispherical tips of the same diameter. The rod shal

17、l be a minimum length of 12 in. (304.8 mm).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 Fi

18、g. 1, Fig. 2, and Fig. 3.NOTE 3Nonabsorbent 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 o

19、r wax, or coveredwith an impermeable material prior to use.4.5 Panels and plates, pieces of34 in. (19 mm) plywood with dimensions as needed to contain units and grout specimens. Soakin limewater for 24 h, seal with varnish or wax, or cover with an impermeable material prior to use. A nonabsorbant ma

20、terial 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 tolerances shall be within 5 % of the width selected.5.2 Test at least three

21、 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.6. Grout Specimen Molds6.1 Molds from Masonry Units:6.1.1 Select a level location where the molds remain undisturbed

22、 for up to 48 h.NOTE 5The location of specimen construction should be protected and as free from perceptible vibration as possible.6.1.2 The construction of the mold shall simulate the in-situ construction. If the grout is placed between two different types ofmasonry units, both types shall be used

23、to construct the mold.6.1.3 Form a space with a square cross-section, 3 in. (76 mm) or larger on each side and twice as high as its width, by stackingmasonry units of the same type and moisture condition as those being used in the construction. The surface of the unit in contactwith the grout specim

24、en shall not have been previously used to mold specimens. Place nonabsorbent blocks, cut to proper size andof the proper thickness or quantity, at the bottom of the space to achieve the necessary height of specimen. Tolerance on space andspecimen dimensions shall be within 5 % of the specimen width.

25、 See Fig. 1, Fig. 2, and Fig. 3 and accompanying notes.6.1.4Line6.1.4 Line the masonry surfaces that will be in contact with the grout specimen with a thin, permeable material toprevent bond to the masonry units. New lining material shall be used for each specimen.NOTE 6The lining, such as paper tow

26、el, is used to aid in stripping the grout specimen from the mold. Proper installation of the lining preventsirregularly sized specimens and varying test results.6.1.5 Brace units to prevent displacement during grouting and curing.6.2 Alternative MethodsAlternative methods of forming the specimens sh

27、all be used only with the approval of the specifier.Such approval shall be based on comparative testing of grout specimens constructed from molds as described in 6.1 and thealternative method. Approval shall be limited to a single specimen shape, method of forming, masonry units used, and grout mix.

28、A conversion factor based on comparative testing of a minimum of ten pairs of specimens shall be used to modify results fromalternative methods.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. (57.2 mm) High Brick Sh

29、own)C1019 112NOTE 7Other methods of obtaining 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 masonr

30、y unitsspecifically manufactured to provide grout 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 o

31、f forming the specimen, specimen geometry, and grout mix, comparative test results between specimens madewith molds described in 6.1 and specimens made with alternative methods are required and confined to a single specimen shape, method of forming,masonry units used, and grout mix.7. Sampling Grout

32、7.1 Size of SampleGrout samples to be used for slump and compressive strength tests shall be a minimum of12 ft3(0.014m3).7.2 ProcedureThe procedures used in sampling shall include the use of precautions that will assist in obtaining samples thatare representative of the nature and condition of the g

33、rout. 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 regularly spaced intervals during the discharge of the middleportion of the batch. The elapsed time between obtaining the first and final portions

34、of the sample shall be not more than 15 min.7.2.2 Laboratory SamplingThe entire mixed batch of grout is the sample.NOTE 8The field technician sampling, making, and curing specimens for acceptance testing should be certified (American Concrete Institute FieldTesting TechnicianGrade I, National Concre

35、te Masonry Association Masonry Testing Technician, or equivalent). Equivalent certification programsshould include both written and performance examinations.7.3Place7.3 Place the grout sample in a non-absorptive container and cover the top to protect the sample from the sun, wind,and any other sourc

36、es of rapid evaporation and from contamination. Transport the grout sample to the mold location. Remix thesample with a shovel or trowel to ensure uniformity prior to filling molds. Keep remaining grout sample protected until used tofill any depression in the sample due to initial water loss.8. Temp

37、erature and Slump Test8.1 Measure and record the temperature of the grout sample in accordance with Test Method C1064/C1064M.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)FIG. 3

38、 Grout Mold with Brick and Concrete Masonry UnitsC1019 1138.2 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 slump in accordance with the requirements of TestMethod C143/C143M.8.4 For se

39、lf-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, AppendixX1.9. Compressive Test Specimen9.1 If grout from the slump or slump flow

40、test is used for the compressive test specimens, remix the sample. Begin filling thecompressive strength molds within 15 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 eachla

41、yer 15 times with the tamping rod. Rod the bottom layer through its depth. Slightly overfill the mold. Rod the second layer withthe tamping rod penetrating12 in. (12.7 mm) into the lower layer. Distribute the strokes uniformly over the cross section of themold.9.3 For self-consolidating grout, fill

42、the mold with grout in one layer and do not rod.9.4 Strike off the top surface of the specimen with a straightedge to produce a flat surface that is even with the top edge of themold and that has no depressions or projections larger than18 in. (3.2 mm). Cover immediately with a damp absorbent materi

43、alsuch as cloth or paper towel. Keep the top surface of the specimens damp by wetting the absorbent material and covering witha nonabsorbent, nonreactive material to retain the moisture. Do not disturb the specimens.9.5Within9.5 Within 30 min after filling the mold, add sufficient grout without rodd

44、ing to fill the depression caused by initialwater loss. Strike off the top surface of the specimen with a straightedge to produce a flat surface that is even with the top edgeof the mold. Cover immediately with a damp absorbent material such as cloth or paper towel. Keep the top surface of the speci

45、mendamp by wetting the absorbent material and covering with a nonabsorbent, nonreactive material. Do not disturb the specimen untilthe molds are removed.NOTE 9The viscosity of self-consolidating grout changes with time. Thus the depression may require filling prior to the thirty minute limit.9.6 Pro

46、tect the specimens from freezing and variations in temperature. Store an indicating maximum-minimum thermometerwith the specimens and record the maximum and minimum temperatures experienced prior to the time the specimens are placedin the final curing environment.NOTE 10If storage temperatures are l

47、ess than 60F (15.6C) or greater than 80F (26.7C) as shown by the thermometer, the resulting compressivestrength will likely be affected.10. Transportation, Curing, and Testing of the Specimens10.1Remove the molds between 24 and 48 h after making the specimens.10.1 Remove the molds between 24 and 48

48、h after making the specimens.NOTE 11Various conditions, such as the use of set retarders or low ambient temperatures, may necessitate delaying mold removal until well after24 h. Care should be taken to ensure the specimens have achieved sufficient strength for transportation, which may include delay

49、ing mold removal andtransportation until 48 h.10.2 Within 30 min after removing the molds, place specimens in a protective container and keep specimens damp.10.3 Transport field specimens to the laboratory within 8 h after mold removal.10.4 Within 8 h after mold removal, place in a moist room, moist cabinet, or water storage tank conforming to SpecificationC511. Store there until day of testing.10.5 Store there until day of testing. Keep specimen damp until tested.10.6 Cap the specimens in accordance with the applicable requirements of Practice C617