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Ceveat Emptor! Preparing Cementitious Mortars for Support HighPerformance Lining Systems: Broom Finish or Blasted Surface?

Ceveat Emptor! Preparing Cementitious Mortars for Support HighPerformance Lining Systems: Broom Finish or Blasted Surface?
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Cementitious repair mortars are commonly used to rehabilitate deteriorated wastewater concrete infrastructure prior to the application of high-performance lining systems. Commonly such repair mortars receive a broom finish creating a “profiled” surface prior to the application of a spray applied protective lining system. Other recommendations require that that the cementitious mortars receive a blasted (mechanically profiled) surface to impart a mechanical profile prior to top coating with a similar lining system. In the following paper the authors summarize the results of an investigation to quantitatively assess adhesion of a protective lining when applied to a broom finish surface verses a blasted surface.

Product Number: 41209-497-SG
Author: Vaughn O’Dea, Rick Schwab
Publication Date: 2009
Industry: Coatings
$0.00
$20.00
$20.00

Cementitious repair mortars are commonly used to rehabilitate deteriorated wastewater concrete infrastructure prior to the application of high-performance lining systems. Commonly such repair mortars receive a broom finish creating a “profiled” surface prior to the application of a spray applied protective lining system. Other recommendations require that that the cementitious mortars receive a blasted (mechanically profiled) surface to impart a mechanical profile prior to top coating with a similar lining system. In the following paper the authors summarize the results of an investigation to quantitatively assess adhesion of a protective lining when applied to a broom finish surface verses a blasted surface.

Cementitious repair mortars are commonly used to rehabilitate deteriorated wastewater concrete infrastructure prior to the application of high-performance lining systems. Commonly such repair mortars receive a broom finish creating a “profiled” surface prior to the application of a spray applied protective lining system. Other recommendations require that that the cementitious mortars receive a blasted (mechanically profiled) surface to impart a mechanical profile prior to top coating with a similar lining system. In the following paper the authors summarize the results of an investigation to quantitatively assess adhesion of a protective lining when applied to a broom finish surface verses a blasted surface.

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Successful coating and lining application on concrete substrates are contingent, in part, on the basic design and installation of the concrete itself. Protective coatings and linings are effected by the amount and movement of water in the concrete, the compressive and tensile strength of the concrete and the concrete's ability to resist cracking from internal and external forces. Through attention to sub-grade conditions, water cement ratios, aggregate grading and content, and finish and cure techniques, probability of successful coating and lining application can be greatly increased.
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