Common use of Other Additives Clause in Contracts

Other Additives. The additives are any other materials that are added to the emulsion mix or to any of the component materials to provide the specified properties. The additives shall be supplied by the emulsion manufacturer to provide control of the set time in the field. Mix Design The Contractor shall submit a mix design certified by the latex modified emulsion manufacturer and present certified test results for the Engineer's approval. Compatibility of the aggregate and latex modified CSS-1h or CQS-1h shall be certified. The job mix formula shall provide a minimum Xxxxxxxx stability of 1,800 pounds and a flow of 6 to 16 units when tested according to modified ASTM procedures. Aggregate used in the job mix formula shall be of the material proposed by the Contractor for use on the project. Submit mix design to the Materials and Tests Unit for approval. The mix design shall conform to the International Slurry Surfacing Association’s ISSA A143, Section 5.2. The gradation of the aggregate shall be in accordance with the following: Screen Size Type II (% passing) Type III (% passing) Stockpile Tolerance 3/8" 100 100 #4 90 - 100 70 - 90 ± 5 #8 65 - 90 45 - 70 ± 5 #16 45 - 70 28 - 50 ± 5 #30 30 - 50 19 - 34 ± 5 #50 18 - 30 12 - 25 ± 4 #100 10 - 21 7 - 18 ± 3 #200 5 - 15 5 - 15 ± 2 The gradation of the aggregate stockpile shall not vary by more than the stockpile tolerance from the mix design gradation (indicated in the table above) while also remaining within the specification gradation band. The percentage of aggregate passing any 2 successive sieves shall not change from one end of the specified range to the other end. The aggregate will be accepted at the job location or stockpile based on 5 gradation tests sampled according to AASHTO T 2. If the average of the 5 tests is within the stockpile tolerance from the mix design gradation, the material will be accepted. If the average of those test results is out of specification or tolerance, the Contractor will be given the choice to either remove the material or blend additional aggregate with the stockpile material to bring it into compliance. Materials used in blending shall meet the required aggregate quality test specifications in Section 1012 of the 2012 Standard Specifications before blending and shall be blended in a manner to produce a consistent gradation. Aggregate blending may require a new mix design. Screening shall be required at the stockpile if there are any problems created by oversized materials in the mix. Type II aggregate gradation is used to fill surface voids, address surface distresses, seal and provide a durable wearing surface. Type III aggregate gradation provides maximum skid resistance and an improved wearing surface. This type of microsurfacing is appropriate for heavily traveled pavements or for placement on highly textured surfaces requiring larger size aggregate to fill voids. Type III microsurfacing shall be used for rut filling. The mineral aggregate shall be weighed by means of scale approved by the Engineer before delivery to the job site. Emulsified asphalt shall be weighed by means of approved scales or be measured by volume. Precautions shall be taken to insure that stockpiles do not become contaminated. Samples for gradation will be taken from aggregate stockpiles designated by the Contractor for use. Samples for asphalt content shall be taken from the completed mix. Samples of aggregate and filler will be taken at the job site. The frequency of sampling and testing will be established by the Engineer based upon the Department's current acceptance program. The asphalt content will be determined by AASHTO T 308 modified.

Other Additives. The additives are any other materials that are added to the emulsion mix or to any of the component materials to provide the specified properties. The additives shall be supplied by the emulsion manufacturer to provide control of the set time in the field. Mix Design The Contractor shall submit a mix design certified by the latex modified emulsion manufacturer and present certified test results for the Engineer's approval. Compatibility of the aggregate and latex modified CSS-1h or CQS-1h shall be certified. The job mix formula shall provide a minimum Xxxxxxxx stability of 1,800 pounds and a flow of 6 to 16 units when tested according to modified ASTM procedures. Aggregate used in the job mix formula shall be of the material proposed by the Contractor for use on the project. Submit mix design to the Materials and Tests Unit for approval. The mix design shall conform to the International Slurry Surfacing Association’s ISSA A143, Section 5.2. The gradation of the aggregate shall be in accordance with the following: Screen Size Type II (% passing) Type III (% passing) Stockpile Tolerance 3/8" 100 100 #4 90 - 100 70 - 90 ± 5 #8 65 - 90 45 - 70 ± 5 #16 45 - 70 28 - 50 ± 5 #30 30 - 50 19 - 34 ± 5 #50 18 - 30 12 - 25 ± 4 #100 10 - 21 7 - 18 ± 3 #200 5 - 15 5 - 15 ± 2 The gradation of the aggregate stockpile shall not vary by more than the stockpile tolerance from the mix design gradation (indicated in the table above) while also remaining within the specification gradation band. The percentage of aggregate passing any 2 successive sieves shall not change from one end of the specified range to the other end. The aggregate will be accepted at the job location or stockpile based on 5 gradation tests sampled according to AASHTO T 2. If the average of the 5 tests is within the stockpile tolerance from the mix design gradation, the material will be accepted. If the average of those test results is out of specification or tolerance, the Contractor will be given the choice to either remove the material or blend additional aggregate with the stockpile material to bring it into compliance. Materials used in blending shall meet the required aggregate quality test specifications in Section 1012 of the 2012 2018 Standard Specifications before blending and shall be blended in a manner to produce a consistent gradation. Aggregate blending may require a new mix design. Screening shall be required at the stockpile if there are any problems created by oversized materials in the mix. Type II aggregate gradation is used to fill surface voids, address surface distresses, seal and provide a durable wearing surface. Type III aggregate gradation provides maximum skid resistance and an improved wearing surface. This type of microsurfacing is appropriate for heavily traveled pavements or for placement on highly textured surfaces requiring larger size aggregate to fill voids. Type III microsurfacing shall be used for rut filling. The mineral aggregate shall be weighed by means of scale approved by the Engineer before delivery to the job site. Emulsified asphalt shall be weighed by means of approved scales or be measured by volume. Precautions shall be taken to insure that stockpiles do not become contaminated. Samples for gradation will be taken from aggregate stockpiles designated by the Contractor for use. Samples for asphalt content shall be taken from the completed mix. Samples of aggregate and filler will be taken at the job site. The frequency of sampling and testing will be established by the Engineer based upon the Department's current acceptance program. The asphalt content will be determined by AASHTO T 308 modified.