欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ASTM C140-2013 Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units《混凝土砌块相关砌块的取样和检验的标准试验方法》.pdf

    • 资源ID:464507       资源大小:589.29KB        全文页数:22页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ASTM C140-2013 Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units《混凝土砌块相关砌块的取样和检验的标准试验方法》.pdf

    1、Designation: C140 13Standard Test Methods forSampling and Testing Concrete Masonry Units and RelatedUnits1This standard is issued under the fixed designation C140; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last re

    2、vision. 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 These test methods provide various testing procedurescommonly used for evaluating characteristics of concretemasonry units a

    3、nd related concrete units. Methods are providedfor sampling, measurement of dimensions, compressivestrength, absorption, unit weight (density), moisture content,flexural load, and ballast weight. Not all methods are appli-cable to all unit types, however.1.2 Specific testing and reporting procedures

    4、 are included inannexes to these test methods for the following specific unittypes:Annex A1Concrete masonry units (Specifications C90, C129)Annex A2Concrete and calcium silicate brick(Specifications C55, C73, C1634)Annex A3Segmental retaining wall units (Specification C1372)Annex A4Concrete interloc

    5、king paving units(Specification C936/C936M)Annex A5Concrete grid paving units (Specification C1319)Annex A6Concrete roof pavers (Specification C1491)Annex A7Dry-cast articulating concrete block(Specification D6684)1.3 The test procedures included in these test methods arealso applicable to other typ

    6、es of units not referenced in thesetest methods, but specific testing and reporting requirementsfor those units are not included.1.4 These test methods include the following sections:SectionScope 1Referenced Documents 2Terminology 3Significance and Use 4Sampling 5Measurement of Dimensions 6Compressi

    7、ve Strength 7Absorption 8Calculations 9Report 10Keywords 11SectionAnnexesTest ProceduresConcrete Masonry Units Annex A1Concrete and Calcium Silicate Brick Annex A2Segmental RetainingWall UnitsAnnex A3Concrete Interlocking Paving Units Annex A4Concrete Grid PavingUnitsAnnex A5Concrete Roof Pavers Ann

    8、ex A6Dry-Cast ArticulatingConcrete BlockAnnex A7Determining Plate ThicknessRequirements forCompression TestingAnnex A8Worksheet and Test Report forConcrete Masonry UnitsAppendix X1NOTE 1The testing laboratory performing these test methods shouldbe evaluated in accordance with Practice C1093.1.5 The

    9、values stated in inch-pound units are to be regardedas the standard, except in Annex A4, where either SI units orinch-pound units are to be regarded separately as standard. Thevalues given in parentheses throughout are mathematicalconversions to SI units that are provided for information onlyand are

    10、 not considered standard.1.6 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 pri

    11、or to use.2. Referenced Documents2.1 ASTM Standards:2C55 Specification for Concrete Building BrickC73 Specification for Calcium Silicate Brick (Sand-LimeBrick)C90 Specification for Loadbearing Concrete Masonry UnitsC129 Specification for Nonloadbearing Concrete MasonryUnitsC143/C143M Test Method for

    12、 Slump of Hydraulic-CementConcrete1These test methods are under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and are the direct responsibility of SubcommitteeC15.03 on Concrete Masonry Units and Related Units.Current edition approved March 15, 2013. Published April 2013. Origi

    13、nallyapproved in 1938. Last previous edition approved in 2012 as C140 12a. DOI:10.1520/C0140-13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Docume

    14、nt Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C936/C936M Specification for Solid Concrete InterlockingPaving UnitsC1093 Practice for

    15、 Accreditation of Testing Agencies forMasonryC1232 Terminology of MasonryC1319 Specification for Concrete Grid Paving UnitsC1372 Specification for Dry-Cast Segmental Retaining WallUnitsC1491 Specification for Concrete Roof PaversC1552 Practice for Capping Concrete Masonry Units, Re-lated Units and M

    16、asonry Prisms for Compression TestingC1634 Specification for Concrete Facing BrickD6684 Specification for Materials and Manufacture of Ar-ticulating Concrete Block (ACB) Revetment SystemsE4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Methods of Mechanical Testing3.

    17、 Terminology3.1 Terminology defined in Terminologies C1232 and E6shall apply for these test methods.4. Significance and Use4.1 These test methods provide general testing requirementsfor application to a broad range of concrete products. Thosegeneral testing requirements are included in the body of t

    18、hisstandard.NOTE 2Consult manufacturer, supplier, product specifications, orother resources for more specific measurement or testing guidelines forthose products not addressed with the annex of this standard.4.2 These test methods provide specific testing requirementsin two distinct sections, the re

    19、quirements applicable to all unitscovered by these test methods and those applicable to thespecific unit types. The requirements applicable to all units areincluded in the body of these test methods and those applicableto the specific unit types are included within the annexes.5. Sampling5.1 Selecti

    20、on of Test Specimens:5.1.1 For purposes of testing, full-sized units shall beselected by the purchaser or authorized representative. Theselected specimens shall be of similar configuration anddimensions. Specimens shall be representative of the whole lotof units from which they are selected.5.1.2 Th

    21、e term “lot” refers to any number of concretemasonry units of any configuration or dimension manufacturedby the producer using the same materials, concrete mix design,manufacturing process, and curing method.5.2 Number of Specimens:5.2.1 Unless specified otherwise in the applicable annex, aset of un

    22、its shall consist of six full-size units.5.2.2 Unless specified otherwise in the applicable annex, forthe compressive strength, absorption, unit weight (density),and moisture content determinations, one set of units shall beselected from each lot of 10 000 units or fraction thereof andtwo sets of un

    23、its from each lot of more than 10 000 and lessthan 100 000 units. For lots of more than 100 000 units, one setof units shall be selected from each 50 000 units or fractionthereof contained in the lot. Additional specimens shall betaken if directed by the purchaser.5.3 Remove loose material from the

    24、specimens (includingthe cores) prior to determining the received weight.NOTE 3An abrasive stone or wire brush is typically used to removeloose material.5.4 IdentificationMark each specimen so that it may beidentified at any time. Markings shall cover not more than 5 %of the surface area of the speci

    25、men.5.5 Received WeightWeigh each specimen immediatelyafter sampling and marking, and record as Wr(receivedweight). Record time and place Wrwas measured.NOTE 4Received weights often have direct relationships with otherunit properties and are therefore a useful method of evaluating results orfor sort

    26、ing purposes. The weight of a concrete masonry unit and relatedunit changes with time and exposure conditions, primarily as a result ofthe moisture within the unit. Therefore, to understand the context of areceived weight value, it is also important to understand the point in timeand the frame of re

    27、ference when that weight was determined. “Time andplace” should not refer to when and where the unit was sampled but whenand where the received weights were determined. In addition to date andtime references, it is also important to know if those weights weredetermined after units reached equilibriu

    28、m with lab environment, orbefore units were shipped, or after delivery to the job site, and so forth.6. Measurement of Dimensions6.1 Apparatus:6.1.1 Measurement DevicesDevices used to measurespecimen dimensions shall have divisions not greater than 0.1in. (2.5 mm) when the dimension is to be reporte

    29、d to thenearest 0.1 in. (2.5 mm) and not greater than 0.01 in. (0.25 mm)when the dimension is to be reported to the nearest 0.01 in.(0.25 mm).6.1.2 Measuring devices shall be readable and accurate tothe division required to be reported. Accuracy shall be verifiedat least once annually. Verification

    30、record shall include date ofverification, person or agency performing verification, identi-fication of reference standard used, test points used duringverification, and readings at test points.6.2 SpecimensThree full-size units shall be selected formeasurement of dimensions.6.3 MeasurementsMeasure s

    31、pecimens in accordance withthe applicable annex of this standard. For those products notcovered by the annexes of this standard, measure overalldimensions (width, height, length) in at least two locations onopposite sides of the specimen to the nearest division requiredto be reported. Document locat

    32、ion of each measurement on asketch or photograph of the specimen.NOTE 5Specimens used for measurement of dimensions may be usedin other tests.NOTE 6Calipers, micrometers, and steel scales and dividers of theappropriate accuracy and readability have been shown to be adequate forthese measurements.7.

    33、Compressive Strength7.1 Test Apparatus:7.1.1 The testing machine shall have an accuracy of 61.0 %over the anticipated load range. The upper platen shall be aspherically seated, hardened metal block firmly attached at thecenter of the upper head of the machine. The center of thesphere shall lie at th

    34、e center of the surface held in its sphericalC140 132seat but shall be free to turn in any direction, and its perimetershall have at least14 in. (6.3 mm) clearance from the head toaccommodate specimens whose bearing surfaces are not par-allel. The diameter of the upper platen (determined in accor-da

    35、nce with Annex A8) shall be at least 6 in. (150 mm). Ahardened metal bearing plate may be used beneath the speci-men to minimize wear of the lower platen of the machine.7.1.2 When the bearing area of the upper platen or lowerplaten is not sufficient to cover the area of the specimen, asingle steel p

    36、late with a thickness equal to at least the distancefrom the edge of the platen to the most distant corner of thespecimen shall be placed between the platen and the cappedspecimen. The length and width of the steel plate shall be atleast14 in. (6 mm) greater than the length and width of theunits.7.1

    37、.3 The surfaces of the platen or plate intended for contactwith the specimen shall have a hardness not less than HRC 60(BHN 620). The surfaces of the platen and plate shall notdepart from plane surfaces by more than 0.001 in. (0.03 mm)in any 6 in. (150 mm) dimension.NOTE 7Research has shown that thi

    38、ckness of bearing plates has asignificant effect on the tested compressive strength of masonry unitswhen the bearing area of the platen is not sufficient to cover the area of thespecimen. Plate bending results in nonuniform stress distributions that caninfluence the failure mechanisms of the tested

    39、specimens. The magnitudeof this effect is controlled by the stiffness of the plate, the size of thespecimen tested, and the strength of the specimen. Tested compressivestrengths will typically increase with increased plate thickness and withreduced distance to the furthest corner of the specimen. So

    40、me testinglaboratories have limitations that limit the practicality of eliminating platebending entirely. Therefore the plate thickness requirements in 7.1 areintended to provide an adequate level of accuracy in the compression testresults so as to conform to the limits of practicality of the testin

    41、glaboratory.NOTE 8Annex A8 includes guidance on determining the requiredplate thickness based on the configuration of the test specimen and the testmachine.7.1.4 The testing machine shall be verified in accordancewith Practices E4 at a frequency defined by Practice C1093.7.2 Test Specimens:7.2.1 Unl

    42、ess specified otherwise in the applicable annex,test three specimens in compression.7.2.2 When possible and unless specified otherwise in theapplicable annex, specimens shall be full-sized units. When theunits cannot be tested full-size due to specimen configurationor testing machine requirements, r

    43、educe the specimen size inaccordance with Annex A1.7.2.3 After delivery to the laboratory, store compressionspecimens (unstacked and separated by not less than 0.5 in. (13mm) on all sides) continuously in air at a temperature of 75 615F (24 6 8C) and a relative humidity of less than 80 % fornot less

    44、 than 48 h. Alternatively, if compression results arerequired sooner, store units unstacked in the same environmentdescribed above with a current of air from an electric fanpassing over them for a period of not less than 4 h. Continuepassing air over the specimens until two successive weighingsat in

    45、tervals of 2 h show an increment of loss not greater than0.2 % of the previously determined weight of the specimen anduntil no moisture or dampness is visible on any surface of theunit. Specimens shall not be subjected to oven-drying.NOTE 9In this test method, net area (other than certain solid unit

    46、s, see9.4) is determined from specimens other than those subjected to compres-sion testing. The compressive strength method is based on the assumptionthat units used for determining net volume (absorption specimens) havethe same net volume as units used for compression testing. Sampled splitface uni

    47、ts, which have irregular surfaces, should be divided at the timethey are sampled from the lot, such that the absorption test specimens havea net volume that is visually representative and a weight that isrepresentative of the compression test specimens.7.2.4 Where saw-cutting of test specimens is al

    48、lowed orrequired by the standard or applicable annex, sawing shall beperformed in an accurate, competent manner, subjecting thespecimen to as little saw vibration as possible. Use a diamondsaw blade of proper hardness. If the specimen is wetted duringsawing, allow the specimen to dry to equilibrium

    49、with labora-tory air conditions before testing, using the procedures outlinedin 7.2.3.7.2.5 If compression test specimens have been saw-cut fromfull-sized units and the net area of the compression testspecimens can not be determined by 9.4.1, saw-cut an addi-tional three units to the dimensions and configuration of thethree compression test specimens. The average net area for thesaw-cut compression specimens shall be taken as the averagenet area of the additional three saw-cut units calculated asrequired in 9.4. Calculated net volumes of saw-cut specimenssh


    注意事项

    本文(ASTM C140-2013 Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units《混凝土砌块相关砌块的取样和检验的标准试验方法》.pdf)为本站会员(sofeeling205)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开