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Light Falling Weight Deflectometer
Standards: ASTM E2835-11, ASTM D4695, TB10414-2003 / TB10102-2004(China), TP BF-StB (Germany)
The falling weight deflectometer is used to measure the vertical deflection of the load plate response of a surface to an impulse load. the deflections is either correlated to pavement surface or used to determine characteristics of the materials used for the pavement foundation. It can quickly & precisely obtain the dynamic deformation modulus (Evd value) of soil and other construction materials.
The falling weight deflectometer provides an easy and cost effective solution to determine the soil bearing capacity and compaction quality, it can quickly obtain the Evd value, it's a common pavement test equipment.
The deflectometer is comprised of a loading mechanism, a loading plate, a electronic settlement measuring device.
Features
More actual of the roadbed soil condition compare with the Ev2 test
Imported sensors and parts guarantee high measuring accuracy
LCD display with backlight for high visibility
Easy operation, rapid test, one point only need 35s
Automatic calculate Evd value and display curve
Portable machine equipped with Bluetooth micro printer
USB data interface easy for connection with computer
Safe & environment friendly
Technical Specifications
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Application |
Soil type |
The soil and soil aggregate mixture with size not larger than 1/4 of the plate dia. |
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Pressure range |
10MPa-225MPa |
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Effective depth |
Normal condition 500mm |
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Measure device |
Loading device |
Drop hammer weight |
10kg |
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Max impact loading |
7.07kn |
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Impulse loading shape |
Half sinusoid |
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Impact duration time |
18±1ms |
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Material |
Zinc-plated steel/ alloy steel |
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Bearing plate |
Diameter |
300mm |
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Thickness |
20mm |
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Material |
Zinc-plate alloy steel |
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Electric sedimentation meter |
Sink testing range |
0.1-2.0mm±0.02mm |
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Storage amount |
2000 groups testing curve |
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Power supply |
Lithium battery, 18hrs continuous work time |
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Working ambient |
Working ambient |
-10 ~ +40ºC |
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Humidity |
<85%RH |
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Main machine case |
Material |
Engineering plastic |
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Net weight |
4.5kg |
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Overall dimension |
385×300×175mm |
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External packing case |
Material |
Aluminum alloy |
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Weight |
approx. 15kg (including 6kg drop hammer) |
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Overall dimension |
1220×395×380mm |
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