Accession Number:

ADA252848

Title:

Review of Measurement Techniques and Principles with Potential Application for Development of Device to Indicate Adequacy of Fresh Concrete Consolidation

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB

Personal Author(s):

Report Date:

1992-06-01

Pagination or Media Count:

24.0

Abstract:

A literature review and evaluation was performed to determine the potential of developing a device to measure degree of consolidation of freshly placed concrete in situ for improving quality control. Standard techniques exist to determine the air content of concrete as it comes from the mixer but not in situ. The features of an ideal device are discussed as a goal in the development of an optimum device. Measurement fundamentals such as resolution, accuracy, data storage, display, cost, ease of operation, etc. are discussed that relate to the development of such a device. The advantages and disadvantages of basing a device on the measurement of various phenomena such as electrical, optical, ultrasonic, nuclear, and other properties are discussed. Devices based on electrical resistivity, ultrasonics, and fiber optics show considerable promise, but more research is needed by independent organizations. It is believed that the technology exists to improve quality control and quality assurance measurements for in-place concrete. It should be possible to detect in situ whether the concrete needs revibration prior to hardening.

Subject Categories:

  • Construction Equipment, Materials and Supplies
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE