scope:

The methods given cover the examination of epoxy resin adhesives for use in bonding traffic markers to pavements, cured concrete to cured concrete, and fresh concrete to cured concrete, and are divided into two parts:

Part I (Sections 3 through 25) covers M 235M/M 235, Class I and II, and M 237, Class I adhesives. (See Figure 1.)

Part II (Sections 26 through 35) covers M 235M/M 235, Class III and M 237, Class II adhesives. (See Figure 1.)

The values stated in SI units are to be regarded as the standard.

The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of R 18 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with R 18 alone does not completely assure reliable results. Reliable results depend on many factors; following the suggestions of R 18 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.