Annex 2C: ROCOND 375 DEFINITION An elastic joint sealant should be present in all sawn or preformed joints in concrete pavements. Joint sealants can be factory-molded sealants that are compressed and inserted into a prepared joint. Joint sealants can also be poured or gunned into the joint when supplied in the fluid state. The function of the joint sealant is to allow movement whilst excluding the lodgment of water and incompressible materials such as sand and silt in the joint. METHOD This item is rated within the selected single lane 50 meter gauging length. (Refer to “Procedure For Rating” in section 2.5.) Ten slabs within the gauging length are inspected on foot to allow assessment of the extent of joint sealant deterioration that is representative of all lanes. The transverse joint at the start of the slab and the adjacent longitudinal joint is considered. The extent of the deterioration is based on the amount of joint length showing loss or extrusion of the sealant over the total length of joints and is calculated by the Data Entry Spreadsheet (DESS). It may be necessary to continue beyond the end of the selected 50 m gauging length to reach this number. Where the rigid pavement joint is covered by an asphalt concrete overlay, the condition of the underlying pavement cannot be assessed and this should be recorded under the Rater’s comments. In the case of continuously reinforced concrete, which has no joints, the joint sealant deterioration should be rated as 0.