Search Results for concrete

...The new tilt-up concrete at a warehouse showed areas of blistered coating almost immediately after completion. The exterior, tilt-up concrete panel walls of a warehouse in the northeast United States were exhibiting widespread areas of blistered coating. Some blistered coating was so advanced...

...The coatings of a newly constructed concrete trench were already peeling and blistering. A proof of concept got to the heart of the problem and provided remediation. The failure investigation started with an email and ended with blisters the size of basketballs. When the blisters popped, water...

...This chapter summarizes and discusses fundamental aspects about the corrosion of reinforcing steel in concrete including transport processes that promote dissolution and activation of steel embedded in the composite material, electrochemical concepts, and internal and environmental factors...

... of degradation, these lifecycle costs may recur within one to two generations. Effective corrosion control through understanding degradation of reinforced concrete, and then optimizing the composition and implementation of corrosion protection, can extend the lifetime of existing structures and decrease net...

...Concrete fundamentals. Concrete is a low–cost composite material used globally to make products like pipe, tanks, manholes, channels, etc., and to construct buildings and structures of all shapes and sizes. This chapter reviews concrete’s general properties, types of concrete deterioration found...

...Preventing Coating Failure Due to Cracks in Concrete. This appendix acquaints the reader with common causes of cracking in concrete substrates and explains when cracking in concrete slated to be coated is expected to propagate through or “reflect” in the coating. Major causes of cracking...

...Blistering of Coatings Due to Moisture in Concrete. Migration of moisture and water vapor through concrete walls and slabs causes problems in coatings and linings, especially osmotic blistering and delamination. Osmotic blistering particularly affects low–permeability linings on concrete surfaces...

...Objective Concrete is one of the most difficult surfaces to coat, due mainly to its wide range of properties. Steel is fairly uniform in texture, and workers are familiar with the proper ways to prepare and coat it. Comparatively, concrete is quite porous in texture, with differences in density...

...Suggested Literature for Coatings Over Concrete Suggested Literature for Coatings Over Concrete ACI 515.1R Latest Version . “ A Guide to the Use of Waterproofing Dampproofing, Protective and Decorative Barrier Systems for Concrete .” Detroit, MI, USA : ACI . ACI 201.1R Latest Version...

...Introduction Concrete may provide the largest surface area of all construction materials. While major emphasis has been placed on the use of steel as a surface for corrosion-resistant coatings, it is believed that the total area of concrete surfaces is even greater, although there is a substantial...

...Surface preparation and evaluation of concrete substrate conditions are critical to the successful installation of an epoxy floor coating system. Improper concrete slab composition, finishing, curing, and surface preparation can lead to delamination and overall system failure. Surface preparation...

... — the slab was already 15 years old and had not proven troublesome in the past. As for the LVT, it is considered a moisture-sensitive floor covering material, and as such, a series of concrete moisture testing was proposed and accepted. The LVT manufacturer specified the use of calcium chloride concrete...

...References References 1 Report of the World Commission on Environment and Development: Our Common Future, G. H. Brundtland, Chair ( 1987 ) http://www.un-documents.net/our-common-future.pdf . 2 WARM (Waste Reduction Model) Report on Concrete ( 2010 ), U.S. Environmental Protection...

...When the floor of a climate-controlled building that holds national archives started to fall, a solution had to be found. Everyone knows that substrate conditions and preparation are the key to successful coating installations. When it comes to floor coatings on concrete slabs, moisture is always...

...8.6 References 8.6 References 1 Bertolini , L. , B.   Elsener , P.   Pedeferri , E.   Redaelli , and R.B.   Polder , Corrosion of Steel in Concrete: Prevention, Diagnosis, Repair ( Weinheim, Germany : John Wiley & Sons , 2013 ). 2 ASTM C150/C150M-18...

...If concrete is so easy to paint, then why are there so many exterior coating failures? This chapter may shed some light on the issue. People often say, “Concrete is easy to paint because it’s so stable.” If that’s so, then why do we see so many exterior coating failures on concrete buildings...

...References References 1 ICRI Guideline No. 03732 , “ Selecting and Specifying Concrete Surface Preparation for Sealers, Coatings, and Polymer Overlays ” ( Sterling, VA, USA : International Concrete Repair Institute , 1990 ). 2 R.   Nixon , “ Coating Selection and Important Properties...