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 D7497-2009 431 Standard Practice for Recovering Residue from Emulsified Asphalt Using Low Temperature Evaporative Technique《用低温蒸发技术从乳化沥青回收残余物的标准实施规程》.pdf

    • 资源ID:525659       资源大小:57.40KB        全文页数:2页
    • 资源格式: PDF        下载积分:5000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5000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 D7497-2009 431 Standard Practice for Recovering Residue from Emulsified Asphalt Using Low Temperature Evaporative Technique《用低温蒸发技术从乳化沥青回收残余物的标准实施规程》.pdf

    1、Designation: D 7497 09Standard Practice forRecovering Residue from Emulsified Asphalt Using LowTemperature Evaporative Technique1This standard is issued under the fixed designation D 7497; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revi

    2、sion, the 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 practice covers a method for recovering the residuefrom emulsified asphalts such as those speci

    3、fied in D 977 andD 2397 using a low temperature evaporative technique that issimilar to pavement conditions. The recovered residue can beused for further testing as required.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1

    4、.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 Do

    5、cuments2.1 ASTM Standards:2D 977 Specification for Emulsified AsphaltD 2397 Specification for Cationic Emulsified AsphaltD 6934 Test Method for Residue by Evaporation of Emul-sified AsphaltD 6997 Test Method for Distillation of Emulsified Asphalt2.2 Other Standard:NF EN 13074 Recovery of Binder from

    6、 Bitumen Emulsionsby Evaporation33. Significance and Use3.1 The procedure described in this practice is used toobtain a residue from an emulsified asphalt that may be usedfor further testing in devices such as a dynamic shear rheom-eter. The lower evaporative temperatures of this procedureprovide co

    7、nditions that are very close to that of applicationtechniques for these materials. This practice could be used inplace of recovery techniques such as those of D 6934 andD 6997, when the temperatures used in those standards wouldnegatively affect the residue.4. Reagents and Materials4.1 Silicone MatT

    8、he mat used can be similar to thatspecified in NF EN 13074 or any mat that will allow anemulsified asphalt spread rate of 1.52.0 kg/m2. The mat mayhave a lip to contain the emulsified asphalt to the appropriatearea.NOTE 1A silicone mat can be purchased at various restaurant supplystores and a good s

    9、ize for this application is a half-sheet pan size to fit inmost laboratory ovens.4.2 SpatulaPalette knife or other suitable material forspreading the emulsified asphalt.4.3 Forced Draft OvenCapable of maintaining a tempera-ture of 25C 6 2C and 60C 6 2C. The racks should be ableto be spaced a minimum

    10、 of 10 cm from the top and bottom ofthe oven and with a spacing of a minimum of 4 cm betweenracks with samples. The oven racks must be checked for level,with a bubble level of 250 mm minimum length, from side toside and front to back of the oven.5. Procedure5.1 Pour the required amount of emulsified

    11、 asphalt onto thesilicone mat and spread evenly with a spatula to give a spreadrate of 1.5 kg/m2to 2.0 kg/m2of emulsified asphalt. Thesilicone mat should be supported by an oven tray or other flattray or pan that will allow easy transfer to an oven. Table 1 maybe used as a guide for the quantities o

    12、f emulsified asphaltnecessary to give the appropriate spread rate for a given area.5.2 Place the silicone mat with the emulsified asphalt into a25C 6 2C forced draft oven for 24 hours 6 1 hour.5.3 Transfer the silicone mat with the emulsified asphalt toa 60C 6 2C forced draft oven for 24 hours 6 1 h

    13、our.5.4 Remove the silicone mat with the emulsified asphaltresidue from the 60C oven and allow to cool at ambient labconditions for one hour prior to removal from the mat.5.5 Carefully peel the emulsified asphalt residue from themat using a wooden or plastic utensil to not damage thesilicone mat. Th

    14、e residue can be kneaded into the appropriate1This practice is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcommittee D04.42 onEmulsified Asphalt Test.Current edition approved Jan. 1, 2009. Published January 2009.2For referenced ASTM

    15、 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 Document Summary page onthe ASTM website.3Available from AFNOR (French Standard Institute), 11, rue Francis dePressens 935

    16、71 La Plaine Saint-Denis Cedex, France, http:/www.afnor.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.sample size for testing (see 3.1) if appropriate gloves are wornto not allow skin contact with the residue.NOTE 2For softer b

    17、inders it may be necessary to cool the mat andresidue in a refrigerator prior to removal.NOTE 3Examples of a wooden or plastic utensil may be a tonguedepressor, silicone spatula, or plastic knife.NOTE 4The recovered binder may be stored in a sealed container atambient laboratory conditions for up to

    18、 one week prior to testing.NOTE 5The recovered binder properties may be changed if heated toa liquid state for further testing.6. Keywords6.1 bitumen; emulsified asphaltASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin

    19、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 revision at any time by the responsible technical committee and must

    20、 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 comments will receive careful consideration at a meeting of ther

    21、esponsible 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 copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700,

    22、 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).TABLE 1 Emul

    23、sified Asphalt Quantity by Mat Area for Appropriate Spread RateEmulsified Asphalt Spread RateEmulsified Asphalt quantity in grams for each area in m20.01 m20.0225 m20.04 m20.0625 m21.5 kg/m215.0 g 33.75 g 60.0 g 93.75 g2.0 kg/m220.0 g 45.0 g 80.0 g 125.0 gNote: The area dimensions correspond to the following square and circle sizes in mm:Area Square Circle0.01 m2100 3 100 mm 56.4 mm radius0.0225 m2150 3 150 mm 84.6 mm radius0.04 m2200 3 200 mm 112.8 mm radius0.0625 m2250 3 250 mm 141.0 mm radiusD7497092


    注意事项

    本文(ASTM D7497-2009 431 Standard Practice for Recovering Residue from Emulsified Asphalt Using Low Temperature Evaporative Technique《用低温蒸发技术从乳化沥青回收残余物的标准实施规程》.pdf)为本站会员(postpastor181)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