Highway Research Record

I.HIGHWAY PLANNING, MANAGEMENT, PERFORMANCE EVALUATION AND INSTRUMENTATION
4.INSTRUMENTATION AND MICRO-PROCESSOR APPLICATION
ON GOING PROJECTS
Development of Micro-Processor System for Roller Mounted Nuclear Density Gauge

Date of Start: July 2002
Central Road Research Institute, New Delhi (R,S,I)

Present Status and Progress
Laboratory studies with the gauge have been carried out on the following density standards:
(i) Sandstone
(ii) Marble
(iii) Glass
(iv) Plaster of Paris
(v) Wax

A correlation between Gamma counts and density has been determined. The regression equation is
D = 6.5647 – 0.00525C
Where D is the density and C is the Gamma counts. Further field works on the project are in progress.