公开(公告)号：US08020451B2

公开(公告)日：2011-09-20

申请号：US12217778

申请日：2008-07-09

申请人： Ali Regimand ,  Lawrence H. James ,  Peter D. Muse ,  Keith Landreth ,  Tianqing He

发明人： Ali Regimand ,  Lawrence H. James ,  Peter D. Muse ,  Keith Landreth ,  Tianqing He

IPC分类号： G01N3/12 ,  G01N15/08 ,  G01N9/14

CPC分类号： G01N9/36 ,  G01N33/42 ,  G01N2203/0005

摘要： An apparatus and method for determination of susceptibility of asphalt concrete materials to moisture damage. An asphalt sample of known bulk specific gravity (density) is placed inside a chamber filled with water, which is capable of heating the sample to a pre-determined temperature. The chamber is pressurized by introduction of air pressure to a flexible membrane that decreases the volume within a chamber containing the sample and water, increasing the pore pressure in the sample. The pressure is then released and allowed to come to ambient pressure. This process is repeated a predetermined number of times (cycles). When a selected number of cycles are complete, the asphalt sample is removed from the chamber and its bulk specific gravity (density) measured again. The difference between the density before and after conditioning is an excellent method of rating the degree at which moisture would deteriorate asphalt samples due to introduction of moisture. The cyclic nature of the increased/decreased pore pressure is observed to significantly decrease bulk specific gravity (density) for poor quality asphalt designs. Furthermore, the sample conditioned by this method can be used for other conventional mechanical test methods, such as tensile strength and modulus determination. Computerized controls are used to automate the procedure and to record and display data from sensors.

摘要翻译： 一种用于确定沥青混凝土材料对水分损伤的敏感性的装置和方法。 将已知体积比重（密度）的沥青样品放置在填充有水的室内，其能够将样品加热至预定温度。 通过将空气压力引入柔性膜来加压腔室，该柔性膜减少了包含样品和水的室内的体积，增加了样品中的孔隙压力。 然后释放压力并使其达到环境压力。 该过程重复预定次数（周期）。 当选定数量的循环完成时，将沥青样品从室中取出，并再次测量其体积比重（密度）。 调节前后的密度之间的差异是评价由于引入水分引起的水分会使沥青样品劣化的程度的优良方法。 观察到增加/降低的孔隙压力的循环性质，对于劣质沥青设计，体积比重（密度）显着降低。 此外，通过该方法调理的样品可用于其它常规的机械测试方法，例如拉伸强度和模量测定。 计算机化控件用于自动化程序，并记录和显示传感器的数据。

公开(公告)号：US20100005898A1

公开(公告)日：2010-01-14

申请号：US12217778

申请日：2008-07-09

申请人： Ali Regimand ,  Lawrence H. James ,  Peter D. Muse ,  Keith Landreth ,  Tianqing He

发明人： Ali Regimand ,  Lawrence H. James ,  Peter D. Muse ,  Keith Landreth ,  Tianqing He

IPC分类号： G01N3/00

CPC分类号： G01N9/36 ,  G01N33/42 ,  G01N2203/0005

摘要： An apparatus and method for determination of susceptibility of asphalt concrete materials to moisture damage. An asphalt sample of known bulk specific gravity (density) is placed inside a chamber filled with water, which is capable of heating the sample to a pre-determined temperature. The chamber is pressurized by introduction of air pressure to a flexible membrane that decreases the volume within a chamber containing the sample and water, increasing the pore pressure in the sample. The pressure is then released and allowed to come to ambient pressure. This process is repeated a predetermined number of times (cycles). When a selected number of cycles are complete, the asphalt sample is removed from the chamber and its bulk specific gravity (density) measured again. The difference between the density before and after conditioning is an excellent method of rating the degree at which moisture would deteriorate asphalt samples due to introduction of moisture. The cyclic nature of the increased/decreased pore pressure is observed to significantly decrease bulk specific gravity (density) for poor quality asphalt designs. Furthermore, the sample conditioned by this method can be used for other conventional mechanical test methods, such as tensile strength and modulus determination. Computerized controls are used to automate the procedure and to record and display data from sensors.

摘要翻译： 一种用于确定沥青混凝土材料对水分损伤的敏感性的装置和方法。 将已知体积比重（密度）的沥青样品放置在填充有水的室内，其能够将样品加热至预定温度。 通过将空气压力引入柔性膜来加压腔室，该柔性膜减少了包含样品和水的室内的体积，增加了样品中的孔隙压力。 然后释放压力并使其达到环境压力。 该过程重复预定次数（周期）。 当选定数量的循环完成时，将沥青样品从室中取出，并再次测量其体积比重（密度）。 调节前后的密度之间的差异是评价由于引入水分引起的水分会使沥青样品劣化的程度的优良方法。 观察到增加/降低的孔隙压力的循环性质，对于劣质沥青设计，体积比重（密度）显着降低。 此外，通过该方法调理的样品可用于其它常规的机械测试方法，例如拉伸强度和模量测定。 计算机化控件用于自动化程序，并记录和显示传感器的数据。

公开(公告)号：US08312776B2

公开(公告)日：2012-11-20

申请号：US13108488

申请日：2011-05-16

申请人： Ali Regimand ,  Lawrence H. James ,  Peter D. Muse ,  Keith Landreth ,  Tianqing He

发明人： Ali Regimand ,  Lawrence H. James ,  Peter D. Muse ,  Keith Landreth ,  Tianqing He

IPC分类号： G01N3/12 ,  G01N15/08 ,  G01N9/14

CPC分类号： G01N9/36 ,  G01N33/42 ,  G01N2203/0005

摘要： An apparatus and method for determination of susceptibility of asphalt concrete materials to moisture damage. An asphalt sample of known bulk specific gravity (density) is placed inside a chamber filled with water, which is capable of heating the sample to a predetermined temperature. The chamber is pressurized by introduction of air pressure to a flexible membrane that decreases the volume within a chamber containing the sample and water, increasing the pore pressure in the sample. The pressure is then released and allowed to come to ambient pressure. This process is repeated a predetermined number of times (cycles). When a selected number of cycles are complete, the asphalt sample is removed from the chamber and its bulk specific gravity (density) measured again. The difference between the density before and after conditioning is an excellent method of rating the degree at which moisture would deteriorate asphalt samples due to introduction of moisture. The cyclic nature of the increased/decreased pore pressure is observed to significantly decrease bulk specific gravity (density) for poor quality asphalt designs. Furthermore, the sample conditioned by this method can be used for other conventional mechanical test methods, such as tensile strength and modulus determination. Computerized controls are used to automate the procedure and to record and display data from sensors.

摘要翻译： 一种用于确定沥青混凝土材料对水分损伤的敏感性的装置和方法。 将已知体积比重（密度）的沥青样品放置在充满水的室内，其能够将样品加热至预定温度。 通过将空气压力引入柔性膜来加压腔室，该柔性膜减少了包含样品和水的室内的体积，增加了样品中的孔隙压力。 然后释放压力并使其达到环境压力。 该过程重复预定次数（周期）。 当选定数量的循环完成时，将沥青样品从室中取出，并再次测量其体积比重（密度）。 调节前后的密度之间的差异是评价由于引入水分引起的水分会使沥青样品劣化的程度的优良方法。 观察到增加/降低的孔隙压力的循环性质，对于劣质沥青设计，体积比重（密度）显着降低。 此外，通过该方法调理的样品可用于其它常规的机械测试方法，例如拉伸强度和模量测定。 计算机化控件用于自动化程序，并记录和显示传感器的数据。

公开(公告)号：US20110214484A1

公开(公告)日：2011-09-08

申请号：US13108488

申请日：2011-05-16

申请人： Ali Regimand ,  Lawrence H. James ,  Peter D. Muse ,  Keith Landreth ,  Tianqing He

发明人： Ali Regimand ,  Lawrence H. James ,  Peter D. Muse ,  Keith Landreth ,  Tianqing He

IPC分类号： G01N15/08

CPC分类号： G01N9/36 ,  G01N33/42 ,  G01N2203/0005

摘要： An apparatus and method for determination of susceptibility of asphalt concrete materials to moisture damage. An asphalt sample of known bulk specific gravity (density) is placed inside a chamber filled with water, which is capable of heating the sample to a predetermined temperature. The chamber is pressurized by introduction of air pressure to a flexible membrane that decreases the volume within a chamber containing the sample and water, increasing the pore pressure in the sample. The pressure is then released and allowed to come to ambient pressure. This process is repeated a predetermined number of times (cycles). When a selected number of cycles are complete, the asphalt sample is removed from the chamber and its bulk specific gravity (density) measured again. The difference between the density before and after conditioning is an excellent method of rating the degree at which moisture would deteriorate asphalt samples due to introduction of moisture. The cyclic nature of the increased/decreased pore pressure is observed to significantly decrease bulk specific gravity (density) for poor quality asphalt designs. Furthermore, the sample conditioned by this method can be used for other conventional mechanical test methods, such as tensile strength and modulus determination. Computerized controls are used to automate the procedure and to record and display data from sensors.

摘要翻译： 一种用于确定沥青混凝土材料对水分损伤的敏感性的装置和方法。 将已知体积比重（密度）的沥青样品放置在充满水的室内，其能够将样品加热至预定温度。 通过将空气压力引入柔性膜来加压腔室，该柔性膜减少了包含样品和水的室内的体积，增加了样品中的孔隙压力。 然后释放压力并使其达到环境压力。 该过程重复预定次数（周期）。 当选定数量的循环完成时，将沥青样品从室中取出，并再次测量其体积比重（密度）。 调节前后的密度之间的差异是评价由于引入水分引起的水分会使沥青样品劣化的程度的优良方法。 观察到增加/降低的孔隙压力的循环性质，对于劣质沥青设计，体积比重（密度）显着降低。 此外，通过该方法调理的样品可用于其它常规的机械测试方法，例如拉伸强度和模量测定。 计算机化控件用于自动化程序，并记录和显示传感器的数据。