2015 - M-37 High Friction Surface Treatment (HFST)

8/18/2019 2015 - M-37 High Friction Surface Treatment (HFST)

1/12

M-37 High Friction SuTreatment (H

Presented by: Tr


2/12

Background and Project Details

• HFST is a new procedure for MDOT and its roads. This will be the firsNorth Region to use the HFST treatment.

• The Polymer Resin Binder was spread on the existing surface at 30 sq

• The Bauxite aggregate had to be laid within 5 minutes of the resin be

order to ensure proper adhesion.

• The surface was not to be disturbed until the resin has had ample timapproximately 3 hours.


3/12

Surface Preparation• The entire surface of the pavement required grinding in order to provide a adequa

the resin to adhere. This was done with a self contained small machine equipped wto collect debris.

•This machine also removed the existing pavement markings. Anything that was nby the machine was removed afterwards using a hand grinder.

• After the pavement was prepared all remaining debris was removed using backpa

Surface BeforeGrinding

Surface AfterGrinding

Surface BeforeGrinding

Surface AfterGrinding


4/12

Prepared cleaned su

Hand Grinding toremove PavementMarkings


5/12

Grinding Off Surface of Existing Pavem


6/12

Epoxy Application

• The polymer resin binder was hand mixed for 3 minutes prior to being place

• The binder was placed at a rate of 30 sqft per gallon of mix. Each tub of mix gallons of resin.

• The resin was spread over the area using a squeegee until it was evenly distr

Special shoes with 1” spi

to avoid disturbing the b


7/12

Application of thePolymer Resin Binder


8/12

Bauxite Aggregate Application• Bauxite is a very hard aggregate that is heated in kilns to remove moisture.

• When crushed Bauxite retains sharp edges which makes it ideal for skid resistance.

• The Bauxite aggregate was loaded into the pressurized sand spreader using a sky track load

• Within 5 minutes of the resin being placed, the bauxite was sprayed over the applied area.

• The aggregate was applied excessively(2-3 inches thick) to ensure total coverage of the ent

BauxiteAggregate


9/12

Bauxite Aggregate

Application


10/12

Recycle Excess Bauxite• After approximately 3 hours to cure, the excess bauxite was swept up into a loader bucket

• The used bauxite was poured into a funnel with a sieve in order to filter out any foreign mate

excess bauxite can be reused for further applications


11/12

Finished Product

High FrictionSurface

OrSu

High Friction

Surface


12/12

Project Information

•Job number: 126551A

• Contract ID: 28051-126551

• Item Number: 1507 058

• Special provision for High Friction Surface Treatment

• 12SP800(A)

• FHWA:APPR: 04-21-14

2015 - M-37 High Friction Surface Treatment (HFST)

Documents

Transcript of 2015 - M-37 High Friction Surface Treatment (HFST)