美国NDT James Cor-Map钢筋锈蚀检测仪-仪器供应网

产品详情

美国NDT James Cor-Map钢筋锈蚀检测仪的详细资料

[美国NDT James C-CM-4000 Cor-Map钢筋锈蚀检测仪]


	名称	美国NDT James C-CM-4000 Cor-Map钢筋锈蚀检测仪
	型号	C-CM-4000 Cor-Map
	厂家	美国NDT James
	用途	简单而经济的测定钢筋潜在腐蚀位置的方法。高阻抗压表连接钢筋及参考极, 可量度半池势。

详细介绍

产品名称筋锈蚀检测仪

型号C-CM-4000

厂家美国NDT James

产品描述:

简单而经济的测定钢筋潜在腐蚀位置的方法。高阻抗压表连接钢筋及参考极, 可量度半池势。

A simple economical method for identifying areas of probable rebar corrosion.

Applications

Locate corroding steel reinforcement

Features & Benefits

Easy to use.

Detachable electrode extension pieces facilitate measurements in hard to reach locations.

High impedance digital meter is designed for tough field conditions.

Electrode is designed for use on horizontal, vertical and inverted positions.

Economical.

Conforms to ASTM C-876.

An economical method for identifying areas of corrosion ASTM C-876.

A high impedance voltmeter is connected between the reinforcing steel and a Cu-CuSO4 reference electrode on the concrete surface where a measurement can be made for the half-cell potential.

This measurement of the probability of corrosion activity. By testing at a fixed distance apart, a grid of half-cell potentials can be developed and areas delineated.

Technical

Corrosion, which is an electrochemical process, occurs in concrete when oxygen and moisture are present. The actual corrosion is an exchange of energy within different sections of the uncoated reinforcing steel. The relative energy levels can be determined in relation to a reference electrode with a stable electrochemical potential.

By connecting a high impedance voltmeter between the reinforcing steel and a reference electrode placed on the concrete surface, a measurement can be made for the half cell potential at the location of the reference cell. This then is a measurement of the probability of corrosion activity in the steel in the vicinity of the reference cell.

The reference cell is copper in a copper sulphate solution. By taking half cell potential measurements a fixed distance apart a grid of half cell potentials can be quickly made and thus areas delineated with a high probability of corrosion of the reinforcing steel.

To analyze the results, the measurements made with Cor Map™ can be plotted on a grid and lines of equipotential contours drawn, highlighting areas of possible corrosion activity.

For example the following guide is listed in ASTM

C-876 using a copper/copper sulphate half cell:

For readings of 350mV and greater there is a 95% chance of active steel corrosion

For readings 200 to 350mV there is a 50% chance of active steel corrosion

For readings less than 200mV there is only 5% chance of active steel corrosion

The method is particularly useful for:

Bridge Decks

Parking Garages

Concrete Piers & Docks

Substructure

Tunnel Lining

Foundations

Specifications

C-CM-4500	High impedance voltmeter
C-CM-4410	Electrode extension pieces each 18 inches (41 cm) long
C-CM-4400	Reference electrode including copper sulphate reservoir
C-CM-4210	Container of copper sulphate (capacity 250 ml)
C-CM-4220	Wetting agent reservoir (capacity 125 ml)
C-CM-4420	Dispensing sponge
C-CM-4300	Cable reel with 250 ft. (80 meters) cable
C-CM-4000	Complete system