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DURABLE ASPHALT REPAIR MIX DARM® SPECIFICATIONS DESCRIPTION DARM® is a plant mixed, high performance asphalt patching material capable of storage for 96 months or longer. It is composed of laboratory approved mineral aggregates and a petroleum based liquid blend capable of coating aggregates without stripping and have stripping resistance of retained coating of not less than 98 percent. The durable asphalt repair shall be uniform, remain flexible and cohesive to 25° and 120° and be capable of retaining adhesive qualities in wet applications. DARM® will be able to repair asphalt, concrete, surface treated roads and shall not require removal and replacement if the asphalt is overlaid. MATERIALS
The aggregates shall consist of 100 percent crushed stone or a laboratory approved equivalent under ASTM C-136. All aggregates are to be from approved sources and representative samples of both fine and coarse aggregate shall be from the plant site and laboratory tested. Sampling and testing methods will be in accordance with accepted local practice. Gradation analysis to comply with all local requirements. Recommended gradation analysis is:
All aggregate percentages are based on the total weight of aggregate. ASTM C-88 Soundness Loss 12.0 percent MAX ASTM C-131 Los Angeles Abrasion 40.0 percent MAX ASTM C-117 -200 Sieve (by wash) 2.0 percent MAX ASTM C-127,128 Absorption 1.0 — 2.0 percent MAX ASTM C-127,128 Specific Gravity 2.55 — 2.75 percent MAX ASTM C-123 Soft Aggregates 3.0 percent MAX
The petroleum liquid blend shall meet the following requirements: ASTM D-1310 Flashpoint (TOC) 250° F Minimum ASTM D-2170 Kinematic Viscosity(140°F) 300-4000 ASTM D-95 Water .2 percent MAX ASTM D-402 Distillate Test to 457° F None to 500° F 0-5 percent to 600°F 0-25 percent Residue distillate at 680° F 72-95 percent RESIDUE TESTS ASTM D-2171 ABS Viscosity at 140° F 125-425 poises ASTM D-5 Penetration 200 Minimum ASTM D-113 Ductility at 39° F .4 in/Min 100 Minimum ASTM D-2042 Solubility in Tricliloroethylene 99 percent Minimum No additives, modifiers or extra ingredients are to be introduced into the liquid blend at any time. PLANT MIX This cold mix will consist of aggregates meeting material as specified in Section A. Aggregate and the petroleum liquid blend meeting material specified in Section B. Petroleum Liquid as indicated in the mix formula. The petroleum liquid blend will be accepted at the plant site as provided by the manufacturer. The preferred mixing ratio shall be 2-9 percent liquid blend per finished ton (2000 lbs) of mixed material. All aggregate percentages are based on the total weight of the aggregate. The petroleum liquid blend content is based on the total weight of the mix. The job mix formula information will provide: Aggregate gradation band and aggregate type Petroleum liquid — amount and type Temperature ranges for material preparation PLANT PREPARATION AND OPERATION The mixture is produced through a conventional hot asphalt plant. The final mixture will be tested in accordance with the on-site quality control requirements. ENVIRONMENTAL TOXICITY TESTING DARM® must have an independent test conducted by a certified laboratory as to toxicology results in a Static Acute Bio Assay Procedure for Hazardous Materials which determines the effect on runoff into waterways, lakes, ponds and groundwater. DARM® contains some petroleum products that are listed under the California Proposition 65 chemical warning. These chemicals are known to the state to cause cancer, birth defects or other reproductive harm. Use caution when handling all petroleum products and avoid prolonged exposure whenever possible. STOCKPILE INSPECTION The stockpile area should be a hard surface, preferably paved with concrete or an asphalt surface. SPECIFICATION SAMPLING A sample of the DARM® liquid blend will be retained for a period of three (3) years. QUALITY CONTROL A quality control report will be prepared before, during and after the production run. On site tests will be completed which include Spot Test, Strip Resistance, Coating Observation and Roll Test. STOCKPILING DARM® may be stockpiled for one (1) or more years uncovered. DARM®, when applied according to our directions to deteriorated concrete or asphalt surfaces, is guaranteed to adhere to the repaired area until the surrounding pavement area fails. DARM®
is manufactured and distributed by DARM® Material Safety Data Sheet (MSDS) is available on request. |
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