#Ss 1h asphalt emulsion manual#

Ship samples within 1 business day when the laboratory is within 50 miles, or within 2 business days when the laboratory is farther than 50 miles.įor asphaltic emulsion used as a tack coat, determine the following:

Use Form CEM-3701 “Test Result Summary,” to record the dates that samples were taken, shipped to the laboratory, test result was received from lab, and test result notification was sent to contractor.

If water has been added to the asphaltic emulsion, note on Form TL-0101, “Sample Identification Card,” the ratio of added water to the total mixture.

Sample asphaltic emulsion in accordance with Table 6-1.12, “Materials Acceptance Sampling and Testing Requirements: Bituminous Seals,” Table 6-1.13, “Materials Acceptance Sampling and Testing Requirements: Asphalt Concrete,' and the instructions in Section 6-203C, “Materials Accepted on the Basis of a Certificate of Compliance,” of this manual.

Make sure that asphaltic emulsion is not sprayed outside designated areas and that bituminous material does not drip from distribution equipment.

Before asphaltic emulsion is applied, check that the surface to be treated is clean and dry.

Check the temperature of the asphaltic emulsion to verify that it is within the specified range when applied.

Verify the receipt of a safety data sheet for each shipment of asphaltic emulsion to the job site.

If asphaltic emulsion is used before Caltrans’ sampling and testing is complete, obtain a certificate of compliance containing the specified information.

If the polymer content of polymer modified asphaltic emulsion is determined under California Test 401, 'Method of Test for Latex Concentration in Asphalt Emulsions,' verify that the contractor has submitted a sample to Materials Engineering and Testing Services.ĭuring the work, take the following steps:.

Make sure the contractor properly equips delivery trucks, storage tanks, and spreading equipment with specified devices for measuring volumes of asphaltic emulsion.

Dilution should be done by the manufacturer, not the contractor.

Examine the distributor truck to determine whether it meets the specified requirements.

#Ss 1h asphalt emulsion manual#

Refer to Section 6-202, “Responsibilities for Acceptance of Manufactured or Fabricated Materials and Products,” of this manual for additional information. Verify that Form CEM-3101, “Notice of Materials to Be Used,” includes asphaltic emulsion.Spray rates closer to 0.10 gallons per square yard promote uniform coverage.įor more information, refer to the Division of Construction’s Tack Coat Guidelines and the “Minimum Spray Application Rates of Original Undiluted and Diluted Emulsions” table at:īefore work begins, take the following steps: Rapid setting emulsions and polymer modified emulsions cannot be diluted.Īsphaltic emulsions (diluted or undiluted) used as a tack coat are typically applied at a rate of 0.05 to 0.15 gallons per square yard. Dilution allows the material to be sprayed at a higher rate, promoting uniform coverage while still maintaining minimum residual rates. Slow setting and quick setting asphaltic emulsions used as a tack coat can be diluted up to 1 part added water to 1 part original emulsion. The residual rate is the amount of bituminous material that remains on the pavement after water and emulsifying or stabilizing agents evaporate it is not the application rate from the distributor truck. When asphaltic emulsions are used as a tack coat for asphalt concrete, the application rate is specified in terms of a residual rate. In addition to the specifications for asphaltic emulsions in Section 94, of the Standard Specifications, refer to the requirements for asphaltic emulsions in other sections of the Standard Specifications-Sections 18, 24, 27, 37, 39, 54, 66 and 86-covering work in which asphaltic emulsions are used.Īsphaltic emulsions are composed of a bituminous material uniformly emulsified with water and an emulsifying or a stabilizing agent. Asphaltic emulsions are also used for other purposes, such as curing seals for lime stabilization and cement-treated base and for coating the surface of cement-treated permeable base to facilitate measuring the thickness of concrete pavement. They are used for seal coats and tack coat. Section 94 Asphaltic Emulsions 4-9401 GeneralĪsphaltic emulsions are described in Section 94, “Asphaltic Emulsions,” of the Standard Specifications.