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    • 1. 发明授权
    • System and method for conditioning and detection of moisture damage in asphalt mixes
    • 调理和检测沥青混合料中水分损害的系统和方法
    • US08020451B2
    • 2011-09-20
    • US12217778
    • 2008-07-09
    • Ali RegimandLawrence H. JamesPeter D. MuseKeith LandrethTianqing He
    • Ali RegimandLawrence H. JamesPeter D. MuseKeith LandrethTianqing He
    • G01N3/12G01N15/08G01N9/14
    • G01N9/36G01N33/42G01N2203/0005
    • 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.
    • 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。
    • 2. 发明授权
    • Systems and methods for assessing the presence of and/or the level of anti-stripping constituents in asphalt binders or asphalt mixtures
    • 用于评估沥青结合料或沥青混合料中抗剥离成分的存在和/或水平的系统和方法
    • US07098034B2
    • 2006-08-29
    • US10327833
    • 2002-12-23
    • Tianqing HeAli RegimandPeter D. MuseLawrence H. James
    • Tianqing HeAli RegimandPeter D. MuseLawrence H. James
    • G01N33/24G01N21/00
    • G01N33/42
    • Methods, systems, and computer program products analyze asphalt samples for anti-stripping agents by: obtaining a sample comprising asphalt binder material; sensing a selected parameter associated with the sample (such as the acidity and/or alkalinity of the sample); and analyzing the sensed parameter to assess at least one of: (a) the presence of at least one anti-stripping agent in the sample; and (b) the level of at least one anti-stripping agent in the sample. The sample can be heated so that it emits exhaust gas and the exhaust gas (directly or indirectly) interrogated to determine its pH, or other constituents or properties, such as ammonia. Pre-defined mathematical relationships can be used to correlate the measured sensed data to the concentrations of the anti-stripping agent(s) in the sample undergoing analysis. The evaluation can be carried out in a generally automated rapid manner so that the test can be completed in about 10 minutes or less. Related devices and kits are also described.
    • 方法,系统和计算机程序产品通过以下方式分析沥青样品的抗剥离剂:获得包含沥青粘合剂材料的样品; 感测与样品相关的选定参数(例如样品的酸度和/或碱度); 以及分析感测参数以评估以下至少一个:(a)样品中存在至少一种抗剥离剂; 和(b)样品中至少一种抗剥离剂的含量。 可以加热样品使其排放废气,并且排除废气(直接或间接地)询问以确定其pH或其它成分或性质,例如氨。 可以使用预定义的数学关系将测量的感测数据与正在进行分析的样品中的抗剥离剂的浓度相关联。 评估可以通常以自动快速的方式进行,使得测试可以在约10分钟或更短的时间内完成。 还描述了相关设备和套件。
    • 4. 发明授权
    • Asphalt content gauge with compensation for sample temperature deviations
    • 沥青含量计,补偿样品温度偏差
    • US4874950A
    • 1989-10-17
    • US175144
    • 1988-03-30
    • Ali Regimand
    • Ali Regimand
    • G01N23/02G01N23/222G01N33/42
    • G01N23/025Y10T16/5357
    • The present invention relates to an improvement in a nuclear measuring gauge for measuring the composition of a hydrogen containing material by counting neutrons which are thermalized by the presence of the hydrogen in the material. The present invention is based upon the recognition that in measuring samples, such as hot asphalt, with such a gauge, the error which is introduced by temperature variations in a sample is a function of not only the temperature of the sample but also its hydrogen content. In accordance with the present invention, this inaccuracy is compensated for by applying to the measurement a correction factor which is a function of both the temperature of the sample and its hydrogen content.
    • 本发明涉及用于通过计数由材料中的氢存在而热化的中子的用于测量含氢材料的组成的核测量计的改进。 本发明基于以下认识:在用这种量规测量诸如热沥青的样品时,由样品中的温度变化引入的误差不仅是样品的温度而且其氢含量 。 根据本发明,通过将测量温度和其氢含量两者的函数的校正因子应用于测量来补偿该不准确性。
    • 6. 发明申请
    • System and method for conditioning and detection of moisture damage in asphalt mixes
    • 调理和检测沥青混合料中水分损害的系统和方法
    • US20100005898A1
    • 2010-01-14
    • US12217778
    • 2008-07-09
    • Ali RegimandLawrence H. JamesPeter D. MuseKeith LandrethTianqing He
    • Ali RegimandLawrence H. JamesPeter D. MuseKeith LandrethTianqing He
    • G01N3/00
    • G01N9/36G01N33/42G01N2203/0005
    • 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.
    • 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。
    • 8. 发明授权
    • Nuclear gauge with compensation for sample irregularities
    • 核尺度补偿样品不规则
    • US5532492A
    • 1996-07-02
    • US321546
    • 1994-10-12
    • Tianqing HeAli Regimand
    • Tianqing HeAli Regimand
    • G01N23/09
    • G01N23/09
    • A neutron gauge is described for determining the moisture content of a moisture containing material. Samples of the moisture containing material are confined in a sample pan and a sample cover with sufficient neutron moderating activity is pressed against the sample. The cover, sample, and sample pan are placed in the same location in the gauge with respect to the neutron source and detector for each measurement to compensate for volume variations in the sample. The sample can be weighed to compensate for density variations. The sample pan cover can include a cadmium sheet for direct contact with the sample to shield the sample from neutrons thermalized by the cover.
    • 描述了用于确定含水分材料的含水量的中子计。 将含水分的材料的样品限制在样品盘中,并将具有足够的中子调节活性的样品盖压在样品上。 盖子,样品和样品盘相对于中子源和检测器放置在量规中的相同位置,用于每次测量以补偿样品中的体积变化。 可以称量样品以补偿密度变化。 样品盘盖可以包括用于与样品直接接触的镉片,以将样品遮蔽由盖子热化的中子。
    • 10. 发明授权
    • Apparatus and method for accurately measuring the density of materials
with rough surfaces by radiation backscatter
    • 用于通过辐射反向散射精确测量具有粗糙表面的材料的密度的装置和方法
    • US4701868A
    • 1987-10-20
    • US681303
    • 1984-12-13
    • Ali Regimand
    • Ali Regimand
    • G01N9/24G01N23/203G06F15/52G01V5/00
    • G01N23/203G01N9/24
    • The present invention provides a nuclear radiation backscatter gauge and method by which an accurate determination of the density of a test material can be made, even though the test material may have surface irregularities or voids which would otherwise contribute significant error to the density measurement. The invention is based upon the use of a nuclear density gauge which is specially designed for measuring thin layers, and which is characterized by having a source and at least two separate detector systems mounted in geometrically differing relationships with respect to the source. Through the use of this type of gauge, in combination with a pad or block of known thickness and density, a measurement is made of the density of a top zone of a predetermined thickness which is greater than the thickness of the block and which thus encompasses not only the block but also an upper portion of the underlying material where the surface voids and irregularities exists. A density measurement is also made of the composite material, i.e. the block and the underlying material. The density of the composite material and the density of the top zone are then used to accurately determine the density of the material as it exists below the level of surface irregularities and voids.
    • 本发明提供了一种核辐射反向散射表和方法,通过该核辐射反向散射表和测量材料的密度的精确确定,即使测试材料可能具有表面不规则性或空隙,否则其将对密度测量产生显着误差。 本发明基于使用专门设计用于测量薄层的核密度计,其特征在于具有源和至少两个单独的检测器系统,该检测器系统相对于源以几何上不同的关系安装。 通过使用这种类型的量规,与具有已知厚度和密度的垫或块结合,测量具有大于块的厚度的预定厚度的顶部区域的密度,并因此包围 不仅块体而且存在表面空隙和不规则性的下层材料的上部。 密度测量也由复合材料制成,即块体和下层材料。 然后使用复合材料的密度和顶部区域的密度来准确地确定材料的密度,因为其存在于表面不规则和空隙的水平之下。