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2. Concrete sealer - Wikipedia

   en.wikipedia.org/wiki/Concrete_sealer

   In past decades attempts to protect concrete have included sealers ranging from wax to linseed oil. Today, high quality concrete sealers can block up to 99% of surface moisture. There are two main sealer categories: topical sealers (coatings) and penetrating sealers (reactive).

3. Shotcrete - Wikipedia

   en.wikipedia.org/wiki/Shotcrete

   Shotcrete, gunite (/ ˈ ɡ ʌ n aɪ t /), or sprayed concrete is concrete or mortar conveyed through a hose and pneumatically projected at high velocity onto a surface. This construction technique was invented by Carl Akeley and first used in 1907. [1]: 7 The concrete is typically reinforced by conventional steel rods, steel mesh, or fibers.

4. Sherwin-Williams - Wikipedia

   en.wikipedia.org/wiki/Sherwin-Williams

   Comex was the 4th largest paint manufacturer in North America. [39] After Mexican antitrust regulators voted against the deal twice, Sherwin-Williams bought Comex's US and Canadian divisions for $165 million on September 16, 2013. [40] PPG, US-based paint and coating company, acquired Comex's Mexican division for $2.3 billion.

5. Steel fibre-reinforced shotcrete - Wikipedia

   en.wikipedia.org/wiki/Steel_fibre-reinforced...

   Traditional rebars are generally used to improve the tensile strength of the concrete in a particular direction, whereas steel fibers are useful for multidirectional reinforcement. This is one of the reasons why steel fiber reinforced (shotcrete form) concrete successfully replaced weldmesh in lining tunnels. Less labour is required.

6. Cold spraying - Wikipedia

   en.wikipedia.org/wiki/Cold_spraying

   The ability for CS to deposit materials that are phase-sensitive or temperature-sensitive has positioned the technique to prepare coatings not possible with other thermal spray techniques. CS can generally be used to produce coatings of a wide variety of metals, alloys, and metal-based composites, including those materials that have an ...

7. Hydrophobic concrete - Wikipedia

   en.wikipedia.org/wiki/Hydrophobic_concrete

   When creating hydrophobic concrete through a coating process, a coating is sprayed or brushed onto a porous surfaces. In most cases, it is applied to a regular concrete slab that then undergoes a corrosive process to expose more of the concrete's capillaries. This can be achieved by water blasting the surface at about 3,000-4,000 psi.