A-1 Landscaping and Construction, Inc. 7/20/2016

I 1 t 2 This section is supplemented with the following new paragraph: 3 4 The requirements of Section 1-06.6 do not apply to the portland cement and fine aggregate I 5 used in sand slurry. 6 7 5-04.3(5)C Crack Sealing I 8 This section's content is deleted and replaced with the following new subsections: 9 10 5-04.3(5)C1 General Ii 1 When the Proposal includes a pay item for crack sealing, all cracks and joints 1/4 inch in 12 width and greater shall be sealed. Cracks and joints shall be thoroughly clean, dry and free 13 of all loose and foreign material when filled with crack sealant material. Immediately prior to I 14 filling a crack or joint with the sealant material a hot air lance shall be used to dry and warm 15 the pavement surfaces within the crack or joint. Pavement shall not be overheated and 16 direct flame dryers shall not be used. Routing cracks and joints is not required. 17 I18 Where cracks and joints are to be filled with sand slurry thoroughly mix the components 19 and pour the mixture into the cracks and joints until full. Additional CSS-1 emulsified 20 asphalt may be added to the sand slurry as needed for the mixture to be workable to I 21 completely fill the crack or joint. Strike off the sand slurry flush with the existing pavement 22 surface and allow the mixture to cure. Cracks or joints that were not completely filled shall 23 be topped off with additional sand slurry. Do not place the HMA overlay until the slurry has I 24 fully cured. 25 26 Where cracks and joints are to be filled with hot poured sealant the material shall be I 27 applied in accordance with these requirements and the manufacturer's recommendations. 28 The manufacturer's recommendations shall be furnished to the Engineer prior to the start of 29 work and shall include recommended heating time and temperatures, allowable storage I 30 31 time and temperatures after initial heating, allowable reheating criteria, and application temperature range. 32 I33 Crack sealing with hot poured sealants shall be controlled to confine the material within the 34 crack or joint. Any overflow of sealant shall be cleaned from the pavement surface. If, in 35 the opinion of the Engineer, the Contractor's method of sealing the cracks and joints with 36 hot poured sealant results in an excessive amount of material on the pavement surface, the 37 operation shall be stopped and corrected to eliminate the excess material. 38 39 5-04.3(5)C2 Crack Sealing Areas Prior to Paving I 40 In areas where HMA will be placed the cracks and joints shall be filled with sand slurry. 41 42 5-04.3(5)C3 Crack Sealing Areas Not to be Paved I 43 In areas where HMA will not be placed the cracks and joints shall be filled as follows: 44 45 1. Cracks 1/4 inch to 1 inch in width shall be filled with hot poured sealant. I 46 47 2. Cracks and joints greater than 1 inch in width shall be filled with sand slurry. 48 I 49 5-04.3(5)C4 Crack Sealing Areas Prior to a Bituminous Surface Treatment 50 In areas where a BST will be placed the cracks and joints shall be filled per Section 5- 51 04.3(5)C3. I52 I RIVERFRONT DEVELOPMENT NORTH WETLAND COMPLEX 3