The important properties required in sealing compounds are that it can be applied without difficulty, are not unduly affected by temperatures variation, adhere strongly to the concrete, and resist any tendency to flow out of the joint under hot weather conditions or loss of resiliency during cold weather conditions.
Under certain circumstances some of the properties are less important that the others. Where the road or runway is not heavily cambered, a lower value of resistance to flow may be accepted; in situations where loose grit is never present in quantity on the surface. |