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Deflection can be measured above the center of the load plate, which in turn must be in contact with the unbound material under the plate.
International standard ASTM E for Light Weight Deflectometer HMP LFG
The original calculation program, based on finite difference method which enables the description of wave propagation in cylindrical soil solid under impact load, was used. Remember me for one month.
Content only available by subscription. Published by Elsevier Ltd. Link to Active This link will always route to the current Active version of the standard.
Some manufacturers provide a one-year warranty for their E235-11, so they can perform the necessary repairs or recalibration as required. In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise.
Keywords stiffness modulus of the ground.
ASTM E2835-11 international standard
Recommended articles Citing articles 0. But before you can use an LWD, you need to make sure that it is calibrated to ASTM E, an international standard for calibrating this type of device.
The identification was carried out on the basis of displacements recorded during impact test. Print 1 2 3 4 5 page sstarting from page current page. Enter your personal account email address to request a password reset: If you like to setup a quick demo, let us know at support madcad.
Soil compaction quality can be determined by using a light weight deflectometer, a reliable and noninvasive testing device used in a wide range of applications like civil engineering, earthworks, construction, and landscaping.
Under a Creative E2835-111 license. For gravel surfaces it is recommended that a thin layer of fine sand be placed over the test point.
The method covers the measurement of deflection of the load plate rather than the deflection of the surface of the pavement or foundation layers see Note 1. E28351-1 Version s – view previous versions e28351-1 standard. Search book title Enter keywords for book title search.
Register for a trial account. The electronic file may not be reproduced in any way. LWDs are lightweight and portable devices that can provide a more accurate data on the rigidity asgm unbound materials before, during, or after construction.
Some uses of the data include quality control and quality assurance of compacted layers, and for structural evaluation of load carrying capacity see Note 2 and Guide. This way, you ashm be sure that you are using a device that can withstand extreme temperatures, dust, vibrations, and rain. Therefore, care must be asmt when analyzing the results because the data obtained by the Portable Impulse Plate Load Test may be obtained under substantially different conditions than when a heavy moving wheel load passes over the pavement surface after construction is complete.
ASTM E testing methods can determine the plate deflection, which results from the application of impulse load. Enter your account email address to request a password reset: This completely uniform contact can depict the load plate deflection that is like the deflection of the unbound material’s surface. The standard is internationally recognized for measuring deflections using a portable impulse plate load apparatus. The deflection is measured at the center of the top of the load plate see Note 1.
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Light Falling Weight Deflectometer, ASTM E | TERRATEST
Posted by Frank Georg Schulz at The paper presents a method of the stiffness modulus identification of the soil built-in embankment, tested by the Light Falling Weight Deflectometer ZFG All devices must go through testing and pass internationally acceptable calibration standards before being made available. Abstract The paper presents a method of the stiffness modulus identification of the soil built-in embankment, tested by the Light Falling Weight Deflectometer ZFG Author links open overlay panel Wojciech Gosk.
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