Continuous Loading Consolidation Testing Using a Microcomputer for Control and Data Acquisition

by Christopher J. Hill, Civil Systems Consulting, San Mateo, CA, USA,



Document Type: Proceeding Paper

Part of: Computing in Civil Engineering

Abstract:

An overview of some of the methods of one-dimensional consolidation testing currently in use is presented, including the load-increment test, the constant rate of strain test, the constant pore-pressure gradient test, and the continuous loading test. The principle of the continuous loading test is discussed, and the apparatus used to perform the test is described. The performance of the test requires constant monitoring of the pore pressure at the base of the specimen, and control of the axial load on the sample to maintain a constant ratio between the axial load and the pore pressure at the base of the specimen. Previously, these tests have been performed using a minicomputer to monitor the pore pressure and control the axial load, but use of relatively inexpensive microcomputer makes the system practical for virtually any soils laboratory.

Subject Headings: Load tests | Axial loads | Soil tests | Pore pressure | Consolidated soils | Material tests | Data collection

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