Category:1071 Asphalt Release Agents, Fiber Additives and Liquid Anti-strip Additives
|Current General Services Specifications (MGS) By Subject|
This article establishes the procedures for inspection and acceptance of asphalt release agents for use in coating truck beds, fibers for stone mastic asphaltic (SMA) and liquid anti-strip additives.
- 1 1071.1 Apparatus
- 2 1071.2 Procedure
(a) One quart (1 liter) screw top cans that are clean, dry and free of all contaminants.
(b) One pint (0.5 liter) screw top cans that are clean, dry and free of all contaminants.
1071.2.1 Pre-Acceptance Lists
The manufacturers and brand names of asphalt release agents, fibers for asphaltic concrete and liquid anti-strip additives will be placed on the Pre-Acceptance List maintained by the Central Office in accordance with Sec 106.12 and the applicable specification. These lists are found in Asphalt Release Agents and Additives Pre-Acceptance List.
1071.2.2 Manufacturer and Brand Name Approval
If a manufacturer desires to have material added to the Pre-Acceptance List of release agents and additives, a certification and guarantee must be submitted to the State Construction and Materials Engineer in accordance with the requirements of Sec 1071. The certification and guarantee shall be accompanied by a one-quart (1 liter) sample of asphalt release agent, at least 5 pounds (2.3 kilograms) of fibers, or one pint (0.5 liter) of liquid anti-strip agent as applicable. Upon approval of the material, it will be placed on the applicable list.
1071.2.3 Basis of Acceptance
Material is accepted by the PAL criteria as indicated in EPG 106.1 Source of Supply and Quality Requirements. The State Construction and Materials Engineer will retain the original certification and guarantee. Additional certification is not necessary if the manufacturer and brand of material is clearly identified on the container or the documentation included with bulk shipments.
1071.2.4.1 Manufacturing Facility
Each producer will be assigned to a district office for Facility Review, Sampling and Testing in accordance with EPG 106.1 Source of Supply and Quality Requirements. During the visit, samples of material available at the facility should be obtained. Materials selected for sampling will typically be those that have been used in MoDOT work during the past month. Material originating at locations too far from the assigned district’s office is subject to sampling at an intermediate location or at the job site. It is the assigned district’s responsibility to coordinate with the supplier and other districts to assure the proper materials are sampled.
1071.2.4.2 Mixing Facility
The district may submit to the Laboratory representative samples of materials being used at any time when there is reason to do so.
A sample shall consist of a one-quart (1 liter) sample of asphalt release agent, at least 5 pounds (2.3 kilograms) of fibers, or one pint (0.5 liter) of liquid anti-strip agent. All samples shall be obtained by the manufacturer or contractor’s agent in accordance with the manufacturer’s sampling instructions. The inspector will observe the sampling process.
1071.2.5 Sample Record
The sample shall be recorded through AASHTOWARE Project (AWP) showing the manufacturer's name, the brand name and designation of the material, lot number, net quantity represented, and the location where the sample was obtained using the Sampled From and Sample Origin fields of AWP. The Other tab is also used for a Mixing Facility, if known. If the material is sampled after having a PAL ID assigned to it, the “Link To” field should be used to link the two sample records in AWP. Test results on random samples of material shall be reported by the Laboratory in accordance with EPG 106.1 Source of Supply and Quality Requirements.
For material shipped directly to a job site by a supplier, the supplier shall notify the State Construction and Materials Engineer prior to shipment using form GS13F3. When the material is shipped to a mixing facility, that facility shall notify the State Construction and Materials Engineer of its arrival using form GS13F2. When complete and correct information on the shipment is provided to the State Construction and Materials Engineer, a PAL ID number will be assigned to the material. That number shall be attached to the material container, or be immediately available at the plant, until the material is consumed. The plant inspector shall continue to show on the daily reports the information required by the Construction Inspection portions in the 400 Flexible Pavement articles.
Material purchased for maintenance work may be accepted and recorded using either the standard PAL process as outlined in the above paragraph or solely on the basis of the manufacturer and brand being on the Pre-Acceptance List. District Materials may report the receipt and acceptance of the material in AWP and will mark the containers with the sample ID number they assign.