Troxler RoadReader Plus 3450 - Chapter 1. Introduction to the Model 3450; Introduction

1–2
INTRODUCTION
Troxler has combined the proven technology of its 3400
(moisture/density) and 4640 (thin layer density) gauges to produce
the Troxler Model 3450 RoadReader Plus. The 3450 meets or
exceeds all applicable American Society of Testing and Materials
(ASTM) standards (or corresponding equivalent), including:
♦ ASTM D-2922: Standard Test Methods for Density of Soil and
Soil-Aggregate in Place by Nuclear Methods (Shallow Depth).
♦ ASTM D-2950: Standard Test Method for Density of Bituminous
Concrete in Place by Nuclear Method.
♦ ASTM D-3017: Standard Test Method for Water Content of Soil
and Rock in Place by Nuclear Methods (Shallow Depth).
With the 3450, the operator can quickly and precisely measure the
moisture content and density of construction materials. The gauge’s
features include:
♦ Three measurement modes (soil, asphalt, and thin layer) for
precise compaction control readings in most construction
materials:
Soil Mode: For moisture/density determinations in soil, soil-
stone materials in layers of 4 inches or greater.
Asphalt Mode: For density determinations in asphalt or
hardened concrete layers of 4 inches or greater.
Thin Layer Mode: For density determinations in asphalt layers
of less than 4 inches.
♦ Special calibration offsets (wet density, moisture, and trench) to
expand measurement possibilities, and to enhance gauge
readings on materials that may fall outside the range of factory
calibration.
♦ Over 30 functions to facilitate all phases of testing compaction
on construction materials.
♦ A backlit liquid crystal display (LCD) to help the operator read
the display during night construction.