1、Designation: C1194 03 (Reapproved 2011)C1194 18Standard Test Method forCompressive Strength of Architectural Cast Stone1This standard is issued under the fixed designation C1194; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、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. Scope1.1 This test method covers the sampling, preparation of specimens, and determination of the compressive strength
3、ofarchitectural cast stone.1.2 The values stated in inch-pound units are to be regarded 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
4、 safety concerns, if any, associated with its use. It is the responsibilityof the user 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 develope
5、d in accordance with internationally recognized principles on standardizationestablished 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
6、.1 ASTM Standards:2C42/C42M Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of ConcreteC109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube Specimens)C617C617/C617M Practice for Capping Cylindrical Concrete Specimens3. Terminology
7、3.1 Definitions:3.1.1 cast stone, nan architectural precast concrete building unit intended to simulate natural cut stone.4. Significance and Use4.1 This test method is to be used in determining the compressive strength of cast stone. Compressive strength is one measureof resistance of cast stone to
8、 weathering and structural stress.5. Apparatus5.1 Testing MachineThe testing machine shall conform to the requirements prescribed in Test Method C109/C109M unlessotherwise indicated therein.6. Sampling6.1 Select the sample to represent the cast stone under consideration. The sample may be selected b
9、y the purchaser or hisauthorized representative from each 500 ft3 (14 m3) of cast stone. Select a sample of adequate size to permit the preparation ofthree compression test specimens.7. Test Specimens7.1 For compression tests, take three specimens from each sample. Cut specimens from the finished su
10、rface of the sample toconsist of one surface intended to be exposed to view and five saw-cut surfaces, except for faced cast stone, cut specimens throughthe faced surface to consist of approximately equal parts of the facing material and the backup material.1 This test method is under the jurisdicti
11、on ofASTM Committee C27 on Precast Concrete Products and is the direct responsibility of Subcommittee C27.20 on Architecturaland Structural Products.Current edition approved May 1, 2011May 1, 2018. Published June 2011May 2018. Originally published in 1991. Last previous edition approved in 20032011
12、asC1194 03.C1194 03(2011). DOI: 10.1520/C1194-03R11.10.1520/C1194-18.2 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
13、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 may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult p
14、rior editions as appropriate. In all cases only the current versionof the standard as published 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 States17.2 Cut test specimens from the sample w
15、ith saws. The test specimens shall be 2-in. (50.8-mm) or 50-mm cubes. The allowablesize tolerance of the cubes shall be 618 in. (3.2 mm).7.3 Measure the top and bottom of the bearing surfaces of the test specimens to 0.01 in. (0.25 mm) and average the two bearingareas to obtain the compression area.
16、8. Conditioning8.1 For this test, oven Oven dry specimens at a temperature of 100 to 110C (212 to 230F) 230 6 9F (110 6 5C) until theloss in mass is not more than 0.1 % in 24 h of drying. Remove from the oven and allow to cool in room temperature for 4 to 6h before capping.9. Specimen Preparation9.1
17、 Cap each specimen, after drying, using equipment, materials, and procedures that conform to those specified in PracticeC617C617/C617M. Capping material is required that will exceed the compressive strength of the tested cubes. Form the cap byspreading the capping material upon a capping plate and p
18、ressing the specimen firmly on it. Make the cap as thin as possible butnot to exceed 332 in. (2.4 mm). Caps must be allowed to harden a minimum of 16 hours prior to testing.10. Procedure10.1 Apply load through a spherical bearing block placed on top of the specimen in a vertical testing machine. The
19、 loading ofhomogenous specimens shall be parallel to the casting direction and of faced specimens shall be normal to the position in whichthe cast stone is laid in the wall (Fig. 1). The area of the bearing block shall be the same, or slightly larger, than that of the testspecimen.10.2 Center the sp
20、ecimen in the testing machine and apply the initial load at a rate which will permit hand adjustment of thecontact plate on the specimen.10.3 Apply load uniformly and without shock. Loading shall be at a rate of 200 to 350 psi/s (1380 to 2415 kPa/s) or for testingmachines of screw type, the moving h
21、ead shall travel at a rate of approximately 0.05 in./min (1.3 mm/min) when the machine isrunning idle.10.4 The compression testing machine shall have a low-range dial or a digital reading scale that shall have an accuracy of61.0 % of the maximum load applied to the cast stone specimens.10.5 Load spe
22、cimens to failure.11. Calculations11.1 Calculate the compressive strength of each specimen as follows:C 5W/A (1)where:C = compressive strength of the specimen, psi (MPa),W = maximum load, lbf (N), on the specimen at failure, andA = calculated area of the uncapped bearing surface in in.2 (mm2).12. Re
23、port12.1 Report the following information.12.1.1 The average compressive strength of three specimens taken from a single sample with the psi results rounded off to thenearest 10 psi.12.1.2 The following information shall be reported as applicable: identification of the sample, mixture proportions, c
24、ompressivestrength, name of the project, date of casting, and age of sample when tested.FIG. 1 Loading PositionC1194 18213. Precision and Bias13.1 PrecisionThe precision of this test is similar to Test Method C42/C42M for which data are not yet available. Theprecision of this test method will be sta
25、ted when data become available.13.2 BiasSince there is no accepted reference material suitable for determining the bias of results of this test method, nostatement on bias is being made.14. Keywords14.1 cast stone; compressive strengthASTM International takes no position respecting the validity of a
26、ny 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 responsibility.This standard is subject to re
27、vision 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 addressed to ASTM International Headquarters. Your
28、 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 the address shown below.This standard is copyr
29、ighted 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 183
