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Archive for the ‘Pavement Preservation’ Category

Surface Preparation Inspection Tests for Concrete and Pavements

Wednesday, June 21st, 2017

Surface Preparation Inspection Tests for Concrete and Pavements

To confirm the profiled surface is properly prepared, the inspector conducts the following field tests: Key Scrape, Tape Pull, Surface Profile, and Cut Depth. These tests are performed before, during, and after the surface is prepared, prior to the new coating or overlay application, with provisions provided under specifications and acceptable engineering practices.

Key Scrape Test: This test determines the surface integrity prior to starting any surface profiling or preparation work. With the serrated side of a key, lightly scrape the surface. If the key dislodges aggregate or some of the surface, it would receive a failing “F” grade. A passing “P” grade indicates the surface is structurally sound.

Should the key test fail after the surface-profiling work, the inspector shall give immediate notice for the contractor to remedy at contractor’s expense prior to receiving acceptance notice. The contractor shall not be held responsible for the repair of any pre-existing failed surface conditions under or adjoining the coating or repair material. If discovered, the contractor shall notify the engineer of the defect to take corrective action as specified under the contract plans.

Tape Pull Test: This test is used to determine surface cleanliness prior to the coating application. Cut a 10” length of duct tape and hand tamp the adhesive side to the prepared area. Quickly peel the tape off the surface and reposition the tape with the adhesive side up. Measure the captured dirt/debris and record the results. If dirt covers more than 1”, representing 10% of the overall coverage area, the surface requires additional cleaning. Continue cleaning until the inspector gives a passing “P” grade.

Surface Profile Comparison: Confirm that the desired profile (SP#1-10) of the surface has been achieved by visually inspecting and comparing the prepared surface and outlying areas to the profiles depicted by replica profile pads, replica putty, replica tape, or SP photos. Record all findings in a journal. Should the profiles not meet the specified range, the inspector shall give immediate notice for the contractor to remedy at contractor’s expense.

Cut Depth Test for Surface Shaving or Grooving: Measure the slot cut depths using depth plates or a dial depth gauge. Take several measurements to obtain an average to accurately measure the depth of the slot. Should the slot dimensions and surface conditions not be met, the inspector shall give immediate notice for the contractor to remedy at contractor’s expense. 


Note:

Prep-before-coating specifications should be intentionally separate from the materials application specification portion of the project to assure all parties (contractor, engineer, and inspector) have clear guidelines and expectations on what is and is not acceptable surface conditions for the new application. The specifications should describe the prep process controls to achieve the correct SP roughness, surface soundness and cleanliness to assure the successful bond between the binder and the surface.

The details of the location of the prepared surface work shall be designated on the plan drawings, or as required by the engineer. The contractor and engineer should evaluate the surfaces prior to commencing work so that all parties can acknowledge and record existing concrete and/or joint conditions. The contractor shall schedule and coordinate the surface-prep work with the engineer prior to the start of any coating, marking, repair, or overlay work.

Definitions:

Surface Profile (SP) is the measure of the average distance from the peaks of the surface to the valleys as seen through a cross-sectional view of the hard surface.

The dimension is defined pictorially and through physical samples in the SP Profile Chart as is expressed by a Surface Profile Number SP1 – 10 (SP1 is a nearly flat, smooth surface; SP10 is extremely rough with amplitude greater than 1⁄4”). Surface profiles can be accomplished by a variety of tools, equipment, and materials, and is dependent upon the type of surface to be prepared, plus the type of system and material thickness to be installed. All factors play an important role in the selection process.

For further details, please contact your SMITH Rep.

Visit SMITH Stocking Dealers and Remove Faster

Monday, June 19th, 2017

Do you want to make your hard work of preparing concrete and asphalt surfaces, faster and easier?

Visit an Authorized SMITH Stocking Dealer!

SMITH partners with top pavement maintenance and concrete flooring maintenance dealers and resellers with a proven track record of delivering high-performance solutions to their customers.

Our dealer network is comprised of experienced professionals who stock, promote, sell, and service the SMITH brand to their qualified customer network with excellent showroom facilities and in-the-field product demonstration throughout their territory.

Why SMITH?

The SMITH brand is a reliable surface-prep solution consisting of a fast, easy, and cost-effective rotary and drum-style surface conditioners designed to support installation and repair of coatings, flooring and pavement marking systems. When applied with the proven SMITHing process, surfaces become safer and sustainable.

If you work on concrete or asphalt roadways, parking areas, sidewalks, floors, balconies and decks, a SMITH is the preferred choice by professionals to:

  • Remove walkway trip-hazards or uneven surfaces
  • Wipe-out flaking paints and coatings 
  • Surface-Prep overlayments for lasting surface bonds
  • Groove or grind into surfaces 
  • Erase stripes without grooves or undulations. 
  • Eliminate water pooling and edge flow lines 
  • Abrade non-skids and increase surface traction.
  • Eradicate glues, surface marks and material build-ups 
  • Mill, Plane, Reduce, Route, Scabble, Cut, Clean and more . . .

To find an authorized SMITH Dealer, please click here.

Mention code “CutterSmithy” for a special first order discount.

Marking Removal 101, Rotary or Drum, what to use on pavements and floors

Thursday, June 1st, 2017

Marking Removal – Drum or Rotary?

marking removal

On March 22, 2017, Steven Smith presented “Marking Removal 101” at the ATSSA How-To Conference to help stripers decide which style of pavement-marking remover (drum or rotary) is best.

This presentation will help the user select the right equipment to remove and replace pavement markings cost-effectively without ghost lines or grooves.

Leaving grooves when removing markings makes driving and biking unsafe. Grooving also causes pavement surfaces to rut and fail prematurely.


 
© 2017 SMITH Surface-Prep Solutions - 1610 S. Dixie Highway, Pompano Beach, FL 33060-8913
Toll Free: 1-800-653-9311 | Ph: 954-941-9744 | Fax: 954-545-0348
Specifications and data are subject to change without notice.