CN107991158A - 可控击实温度的沥青混合料马歇尔击实仪及试验方法 - Google Patents
可控击实温度的沥青混合料马歇尔击实仪及试验方法 Download PDFInfo
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- JLQUFIHWVLZVTJ-UHFFFAOYSA-N carbosulfan Chemical compound CCCCN(CCCC)SN(C)C(=O)OC1=CC=CC2=C1OC(C)(C)C2 JLQUFIHWVLZVTJ-UHFFFAOYSA-N 0.000 claims abstract description 15
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110542602A (zh) * | 2019-09-27 | 2019-12-06 | 深圳市市政工程总公司 | 纤维温拌沥青混合料试件的制备设备 |
CN110633550A (zh) * | 2019-09-27 | 2019-12-31 | 深圳市市政工程总公司 | 聚酯纤维温拌沥青混合料的最佳油石比设计方法 |
CN111562152A (zh) * | 2020-05-19 | 2020-08-21 | 河北建筑工程学院 | 一种一体式土体模件制作装置 |
CN112665949A (zh) * | 2021-01-26 | 2021-04-16 | 济南鲁桥工程检测有限公司 | 一种高效率马歇尔自动击实仪 |
CN115014977A (zh) * | 2022-06-02 | 2022-09-06 | 无锡市城市道桥科技有限公司 | 一种钢渣沥青混合料水稳定性测试工艺 |
Citations (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2728181A1 (de) * | 1977-06-23 | 1979-01-04 | Karl Prof Dipl Ing Listner | Verfahren und vorrichtung zur herstellung von probekoerpern aus nichtgiessfaehigen bituminoesen massen |
US5236525A (en) * | 1992-02-03 | 1993-08-17 | Rockwell International Corporation | Method of thermally processing superplastically formed aluminum-lithium alloys to obtain optimum strengthening |
US5323655A (en) * | 1993-04-23 | 1994-06-28 | Troxler Electronic Laboratories, Inc. | Method and apparatus for compacting material samples |
US20040129478A1 (en) * | 1992-05-05 | 2004-07-08 | Breed David S. | Weight measuring systems and methods for vehicles |
EP1484699A2 (en) * | 2001-08-10 | 2004-12-08 | Xencor | Protein design automation for protein libraries |
CN101539567A (zh) * | 2009-04-14 | 2009-09-23 | 江南大学 | 全自动石油沥青针入度测量仪 |
US20100108379A1 (en) * | 2008-10-13 | 2010-05-06 | David Alston Edbury | Systems and methods of forming subsurface wellbores |
CN201945506U (zh) * | 2010-12-20 | 2011-08-24 | 长安大学 | 一种智能控温全自动马歇尔稳定度试验仪 |
CN202041412U (zh) * | 2011-05-14 | 2011-11-16 | 张天国 | 一种沥青混合料击实装置 |
CN202562819U (zh) * | 2012-04-28 | 2012-11-28 | 长沙理工大学 | 透水性沥青混合料水稳定性的测试装置 |
CN202599759U (zh) * | 2012-05-24 | 2012-12-12 | 甘肃路桥建设集团养护科技有限责任公司 | 一种自动高强度马歇尔稳定度流值测试装置 |
CN103454212A (zh) * | 2013-08-19 | 2013-12-18 | 长安大学 | 一种模拟机械除冰的测试装置及其测试方法 |
US20140009170A1 (en) * | 2003-10-24 | 2014-01-09 | Troxler Electronic Laboratories, Inc. | Pavement Material Microwave Moisture-Density Measurement Methods and Apparatuses |
CN103698180A (zh) * | 2013-12-16 | 2014-04-02 | 长安大学 | 一种马歇尔自动击实装置及试验方法 |
CN203616185U (zh) * | 2013-12-16 | 2014-05-28 | 长安大学 | 一种改进的马歇尔自动击实仪 |
CN203745256U (zh) * | 2014-01-25 | 2014-07-30 | 长安大学 | 一种基于万能试验机的沥青混合料马歇尔试件脱模用器具 |
CN203798668U (zh) * | 2014-02-17 | 2014-08-27 | 高天才 | 沥青混合料马歇尔试验仪 |
CN104155212A (zh) * | 2014-08-26 | 2014-11-19 | 深圳市太科检测有限公司 | 一种水泥凝结时间自动测定仪 |
CN204116115U (zh) * | 2014-10-13 | 2015-01-21 | 长安大学 | 一种能够保持沥青混合料温度稳定性的马歇尔试模装置 |
CN104729898A (zh) * | 2015-03-07 | 2015-06-24 | 盐城工学院 | 沥青混合料振动旋转压实仪 |
CN204439434U (zh) * | 2015-02-11 | 2015-07-01 | 长安大学 | 一种马歇尔自动击实仪 |
CN204855230U (zh) * | 2015-07-29 | 2015-12-09 | 温州市正诚工程质量检测有限公司 | 马歇尔试样电动击实机的击实运动机构 |
CN205280481U (zh) * | 2015-12-19 | 2016-06-01 | 长安大学 | 一种控温马歇尔击实仪 |
CN205317546U (zh) * | 2015-12-17 | 2016-06-15 | 衢州峥嵘环保科技有限公司 | 一种马歇尔气动击实仪 |
CN205538379U (zh) * | 2016-01-15 | 2016-08-31 | 平顶山市公路工程公司 | 一种新型马歇尔试模模具 |
CN206378345U (zh) * | 2017-01-19 | 2017-08-04 | 长安大学 | 一种车辙板试样击实仪 |
CN206430960U (zh) * | 2017-01-12 | 2017-08-22 | 长安大学 | 一种自动保温的马歇尔击实仪 |
CN206523373U (zh) * | 2017-03-07 | 2017-09-26 | 广州大学 | 一种带温控的马歇尔试验仪 |
CN107238520A (zh) * | 2017-05-20 | 2017-10-10 | 浙江交科工程检测有限公司 | 一种马歇尔击实仪 |
CN107449343A (zh) * | 2017-09-07 | 2017-12-08 | 山东交通学院 | 一种用于测量马歇尔试件高度和温度的试验装置及方法 |
CN206756573U (zh) * | 2017-05-10 | 2017-12-15 | 江苏金恒信息科技股份有限公司 | 一种冲击实验装置以及冲击实验系统 |
CN207894686U (zh) * | 2018-01-29 | 2018-09-21 | 山东交通学院 | 可控击实温度的沥青混合料马歇尔击实仪 |
-
2018
- 2018-01-29 CN CN201810084411.1A patent/CN107991158B/zh active Active
Patent Citations (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2728181A1 (de) * | 1977-06-23 | 1979-01-04 | Karl Prof Dipl Ing Listner | Verfahren und vorrichtung zur herstellung von probekoerpern aus nichtgiessfaehigen bituminoesen massen |
US5236525A (en) * | 1992-02-03 | 1993-08-17 | Rockwell International Corporation | Method of thermally processing superplastically formed aluminum-lithium alloys to obtain optimum strengthening |
US20040129478A1 (en) * | 1992-05-05 | 2004-07-08 | Breed David S. | Weight measuring systems and methods for vehicles |
US5323655A (en) * | 1993-04-23 | 1994-06-28 | Troxler Electronic Laboratories, Inc. | Method and apparatus for compacting material samples |
EP0695419A1 (en) * | 1993-04-23 | 1996-02-07 | Troxler Electronic Lab Inc | METHOD AND DEVICE FOR COMPRESSING MATERIAL SAMPLES |
EP1484699A2 (en) * | 2001-08-10 | 2004-12-08 | Xencor | Protein design automation for protein libraries |
US20140009170A1 (en) * | 2003-10-24 | 2014-01-09 | Troxler Electronic Laboratories, Inc. | Pavement Material Microwave Moisture-Density Measurement Methods and Apparatuses |
US20100108379A1 (en) * | 2008-10-13 | 2010-05-06 | David Alston Edbury | Systems and methods of forming subsurface wellbores |
CN101539567A (zh) * | 2009-04-14 | 2009-09-23 | 江南大学 | 全自动石油沥青针入度测量仪 |
CN201945506U (zh) * | 2010-12-20 | 2011-08-24 | 长安大学 | 一种智能控温全自动马歇尔稳定度试验仪 |
CN202041412U (zh) * | 2011-05-14 | 2011-11-16 | 张天国 | 一种沥青混合料击实装置 |
CN202562819U (zh) * | 2012-04-28 | 2012-11-28 | 长沙理工大学 | 透水性沥青混合料水稳定性的测试装置 |
CN202599759U (zh) * | 2012-05-24 | 2012-12-12 | 甘肃路桥建设集团养护科技有限责任公司 | 一种自动高强度马歇尔稳定度流值测试装置 |
CN103454212A (zh) * | 2013-08-19 | 2013-12-18 | 长安大学 | 一种模拟机械除冰的测试装置及其测试方法 |
CN103698180A (zh) * | 2013-12-16 | 2014-04-02 | 长安大学 | 一种马歇尔自动击实装置及试验方法 |
CN203616185U (zh) * | 2013-12-16 | 2014-05-28 | 长安大学 | 一种改进的马歇尔自动击实仪 |
CN203745256U (zh) * | 2014-01-25 | 2014-07-30 | 长安大学 | 一种基于万能试验机的沥青混合料马歇尔试件脱模用器具 |
CN203798668U (zh) * | 2014-02-17 | 2014-08-27 | 高天才 | 沥青混合料马歇尔试验仪 |
CN104155212A (zh) * | 2014-08-26 | 2014-11-19 | 深圳市太科检测有限公司 | 一种水泥凝结时间自动测定仪 |
CN204116115U (zh) * | 2014-10-13 | 2015-01-21 | 长安大学 | 一种能够保持沥青混合料温度稳定性的马歇尔试模装置 |
CN204439434U (zh) * | 2015-02-11 | 2015-07-01 | 长安大学 | 一种马歇尔自动击实仪 |
CN104729898A (zh) * | 2015-03-07 | 2015-06-24 | 盐城工学院 | 沥青混合料振动旋转压实仪 |
CN204855230U (zh) * | 2015-07-29 | 2015-12-09 | 温州市正诚工程质量检测有限公司 | 马歇尔试样电动击实机的击实运动机构 |
CN205317546U (zh) * | 2015-12-17 | 2016-06-15 | 衢州峥嵘环保科技有限公司 | 一种马歇尔气动击实仪 |
CN205280481U (zh) * | 2015-12-19 | 2016-06-01 | 长安大学 | 一种控温马歇尔击实仪 |
CN205538379U (zh) * | 2016-01-15 | 2016-08-31 | 平顶山市公路工程公司 | 一种新型马歇尔试模模具 |
CN206430960U (zh) * | 2017-01-12 | 2017-08-22 | 长安大学 | 一种自动保温的马歇尔击实仪 |
CN206378345U (zh) * | 2017-01-19 | 2017-08-04 | 长安大学 | 一种车辙板试样击实仪 |
CN206523373U (zh) * | 2017-03-07 | 2017-09-26 | 广州大学 | 一种带温控的马歇尔试验仪 |
CN206756573U (zh) * | 2017-05-10 | 2017-12-15 | 江苏金恒信息科技股份有限公司 | 一种冲击实验装置以及冲击实验系统 |
CN107238520A (zh) * | 2017-05-20 | 2017-10-10 | 浙江交科工程检测有限公司 | 一种马歇尔击实仪 |
CN107449343A (zh) * | 2017-09-07 | 2017-12-08 | 山东交通学院 | 一种用于测量马歇尔试件高度和温度的试验装置及方法 |
CN207894686U (zh) * | 2018-01-29 | 2018-09-21 | 山东交通学院 | 可控击实温度的沥青混合料马歇尔击实仪 |
Non-Patent Citations (4)
Title |
---|
MANJUNATH K.R.ET: "Performance and Evaluation on Marshall Stability Properties of Warm Mix Asphalt Using Evotherm and Cecabase Rt®-A Chemical Additive", 《INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY》 * |
刘朝晖等: "沥青混合料大型马歇尔击实试验与路用性能研究", 《长沙理工大学学报》 * |
弥海晨等: "乳化型温拌沥青混合料性能试验方法研究", 《中外公路》 * |
马秋馥等: "带温控的马歇尔稳定度试验仪的智能实现", 《剂量检测与监测》 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110542602A (zh) * | 2019-09-27 | 2019-12-06 | 深圳市市政工程总公司 | 纤维温拌沥青混合料试件的制备设备 |
CN110633550A (zh) * | 2019-09-27 | 2019-12-31 | 深圳市市政工程总公司 | 聚酯纤维温拌沥青混合料的最佳油石比设计方法 |
CN110542602B (zh) * | 2019-09-27 | 2024-05-31 | 深圳市政集团有限公司 | 纤维温拌沥青混合料试件的制备设备 |
CN111562152A (zh) * | 2020-05-19 | 2020-08-21 | 河北建筑工程学院 | 一种一体式土体模件制作装置 |
CN111562152B (zh) * | 2020-05-19 | 2023-05-16 | 河北建筑工程学院 | 一种一体式土体模件制作装置 |
CN112665949A (zh) * | 2021-01-26 | 2021-04-16 | 济南鲁桥工程检测有限公司 | 一种高效率马歇尔自动击实仪 |
CN112665949B (zh) * | 2021-01-26 | 2022-07-26 | 济南鲁桥工程检测有限公司 | 一种高效率马歇尔自动击实仪 |
CN115014977A (zh) * | 2022-06-02 | 2022-09-06 | 无锡市城市道桥科技有限公司 | 一种钢渣沥青混合料水稳定性测试工艺 |
CN115014977B (zh) * | 2022-06-02 | 2023-11-28 | 无锡市城市道桥科技有限公司 | 一种钢渣沥青混合料水稳定性测试工艺 |
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