公开(公告)号：US20040057335A1

公开(公告)日：2004-03-25

申请号：US10667172

申请日：2003-09-19

Applicant: Barnstead/Thermolyne Corporation

Inventor： Mark D. Lockwood ,  Steven C. Peake

IPC: B01F011/00 ,  B01F013/06

CPC classification number: G01N5/02 ,  G01N21/4738

Abstract: A method of determining liquid absorption of an aggregate comprises providing a shaker apparatus, a vacuum source and a container; placing a sample of the aggregate in the container; adding liquid to the container sufficient to reach a calibration mark on the container; weighing the sample and liquid; mounting the container to the shaker apparatus; connecting the vacuum source to the container; agitating the sample and liquid with the shaker apparatus; applying a vacuum to the sample and liquid with the vacuum source; after the agitation and vacuum steps, adding liquid to the container sufficient to again reach the calibration mark on the container; again weighing the sample and liquid; and subtracting the initial weight of the sample and liquid from the final weight of the sample and liquid in order to determine the liquid absorption of the aggregate.

Abstract translation: 确定聚集体的液体吸收的方法包括提供振动器装置，真空源和容器; 将集料样品放在容器中; 向容器中加入足以达到容器上校准标记的液体; 称量样品和液体; 将容器安装到振动器装置上; 将真空源连接到容器; 用振动器装置搅拌样品和液体; 用真空源对样品和液体施加真空; 在搅拌和真空步骤之后，向容器中加入足以再次达到容器上校准标记的液体; 再称重样品和液体; 并从样品和液体的最终重量中减去样品和液体的初始重量，以确定聚集体的液体吸收。

公开(公告)号：US20030094574A1

公开(公告)日：2003-05-22

申请号：US10294856

申请日：2002-11-14

Applicant: Barnstead/Thermolyne Corporation

Inventor： Roger W. Earle SR. ,  Eric T. Garz ,  Peter O. Lee ,  Mark D. Lockwood ,  Jason J. Schmitt

IPC: G01J005/02

CPC classification number: G01N21/4738

Abstract: A method of determining liquid absorption of an aggregate comprises providing a sample of the aggregate, adding liquid to the sample, subjecting the sample to a light source signal, monitoring a light reflected signal reflected from the sample and controlling addition of liquid to the sample as a function of the light reflected signal. The apparatus comprises a support for supporting a sample of the aggregate, a liquid source for adding liquid to the sample, a light source which subjects the sample to a light source signal, a light sensor which senses a reflected light signal reflected from the sample and a processor/controller which controls addition of liquid from the liquid source as a function of the reflected light signal. The light source is preferably an infrared source and the light sensor is preferably an infrared detector. The sample is weighed in a dry state and in the saturated surface dry (nullSSDnull) state and the percent by weight of aggregate water absorption and hence aggregate binder absorption and/or bulk specific gravity is then calculated. A weighing device can be incorporated directly into the apparatus.