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首页> 外文会议>Airfield and Highway Pavement Specialty Conference; 20060430-0503; Atlanta,GA(US) >BCD: A New Tool for Compaction Control
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BCD: A New Tool for Compaction Control

机译：BCD：压实控制的新工具

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摘要

Compacted soil is an essential element in the construction of highways, airports, buildings, sewers, and bridges. Even though soil density is not the most desired engineering property, it is used almost exclusively by the transportation industry to specify, estimate, measure, and control soil compaction because soil density can be easily determined via weight and volume measurements. However, there is a trend towards using the modulus as a compaction control parameter instead of dry density. The reasons are that the most common tool which measures the density in the field requires the use of a nuclear radiation source and that the modulus is used for the design of pavement instead of dry density. The Briaud Compaction Device (BCD) is a new instrument to obtain a soil modulus in only a few seconds. It consists of a cylindrical top case which includes the display and the electric processing unit, a hollow rod which transmits the load from the handles of the top of the plate, the load cell and a 150mm diameter metal plate below the load cell. This article describes the tool concept, the field and lab test procedure, the field work reading, the calibration and proposes a recommended procedure to using BCD for compaction project.
机译：压实的土壤是高速公路，机场，建筑物，下水道和桥梁建设中必不可少的元素。尽管土壤密度不是最理想的工程特性，但运输行业几乎只使用它来指定，估算，测量和控制土壤压实度，因为可以通过重量和体积测量轻松确定土壤密度。但是，存在使用模量代替干密度作为压实控制参数的趋势。原因是，最常用的测量现场密度的工具需要使用核辐射源，并且模量用于路面设计而不是干密度设计。 Briaud压实设备（BCD）是一种仅需几秒钟即可获得土壤模量的新型仪器。它由一个圆柱形的顶盖组成，该顶盖包括显示屏和电气处理单元，一根空心杆，用于传递来自板顶部手柄的载荷，称重传感器以及称重传感器下方的直径为150mm的金属板。本文介绍了工具概念，现场和实验室测试程序，现场工作读数，校准，并提出了将BCD用于压实项目的推荐程序。

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