The opening of the state-of-the-art Pacific Seas Aquarium at the Point Defiance Zoo & Aquarium in July 2018 – powered by the PENETRON ADMIX-treated pumphouse – is a milestone for the Tacoma, WA, institution.
EAST SETAUKET, N.Y. (PRWEB) July 16, 2018
The opening of the state-of-the-art Pacific Seas Aquarium at the Point Defiance Zoo & Aquarium in July 2018 – powered by the PENETRON ADMIX-treated pumphouse – is a milestone for the Tacoma, WA, institution.
The new 35,000-square-foot (3,200 m2) Pacific Seas Aquarium at the Point Defiance Zoo & Aquarium in Tacoma, WA showcases marine life from the North Pacific. The stunning 275,000-gallon Baja Bay habitat will be home to an amazing array of tropical fish and visitors will see three new species never seen at the zoo: green sea turtles, scalloped hammerhead sharks, and spotted eagle rays. The almost $200 million project, the largest in the 112-year history of Metro Parks Tacoma, was funded by a bond issue approved by voters in 2014.
“It replaces the 55-year-old North Pacific Aquarium, which played a crucial role in the growth of the zoo and in teaching our guests about the fish and other sea animals that live in Puget Sound and the waters of the northern Pacific Ocean,” says John Houck, Deputy Director of Point Defiance Zoo & Aquarium.
However, over the years, the concrete structure of the old aquarium has been visibly deteriorating. Not surprisingly, because the facility’s concrete had been exposed to constant seawater for such a long time, the matrix also became more permeable, making the concrete susceptible to ever more deterioration. Cracks, spalls, mortar erosion, and corrosion stains are visible signs of concrete deterioration that cause increased porosity and decreased strength.
Selecting the Right Concrete Mix
“Understanding how concrete deteriorates in contact with seawater and thereby carefully selecting a mix design can help ensure the maximum service life of a concrete structure,” says Christopher Chen, Director of The Penetron Group.
Attack by most of these processes is minimized by reducing concrete permeability. Low permeability helps keep aggressive chemicals out, slows the leaching of soluble materials (lime, etc.), and limits carbonation (to protect reinforcing steel from corrosion).
Less Permeability, More Durability
“Any design enhancement or construction measure that reduces permeability will invariably improve concrete durability,” adds Christopher Chen.
Holroyd Concrete of Tacoma, WA, the project’s ready-mix supplier, specified PENETRON ADMIX SB (in premeasured, soluble bags) for the concrete used for the aquarium pump station, which keeps the saltwater circulating through the aquarium tanks. The contractor, McClure and Sons, also used PENEBAR SW swellable waterstop to seal the construction joints, PENETRON slurry replaced the air entrainment process for the pump station walls to reduce the propensity for bug holes in the new concrete, and PENECRETE MORTAR was applied to patch any voids (tie holes, bug holes, etc.) in the concrete.
Concrete Lasts 3x Longer
When PENETRON ADMIX is added to a concrete mix, it reduces permeability by permanently sealing microcracks, pores and capillaries, effectively protecting the concrete against water penetration and the effects of deterioration. The crystalline admixture also reduces shrinkage and provides self-healing of cracks over the service life of the structure. According to ACI guidelines for permeability-reducing admixtures for hydrostatic conditions(PRAH), PENETRON ADMIX provides a reduction of 70% or more in concrete permeability.
“Because Penetron crystalline technology produces an integral crystalline formation, the service life of Penetron-treated concrete is about three times that of conventional concrete,” concludes Christopher Chen.
The Penetron Group is a leading manufacturer of specialty construction products for concrete waterproofing, concrete repairs and floor preparation systems. The Group operates through a global network, offering support to the design and construction community through its regional offices, representatives and distribution channels.
For more information on Penetron waterproofing solutions, please visit penetron(dot)com or Facebook(dot)com/ThePenetronGroup, email CRDept(at)penetron(dot)com or contact the Corporate Relations Department at 631-941-9700. Reported by PRWeb 6 hours ago.
EAST SETAUKET, N.Y. (PRWEB) July 16, 2018
The opening of the state-of-the-art Pacific Seas Aquarium at the Point Defiance Zoo & Aquarium in July 2018 – powered by the PENETRON ADMIX-treated pumphouse – is a milestone for the Tacoma, WA, institution.
The new 35,000-square-foot (3,200 m2) Pacific Seas Aquarium at the Point Defiance Zoo & Aquarium in Tacoma, WA showcases marine life from the North Pacific. The stunning 275,000-gallon Baja Bay habitat will be home to an amazing array of tropical fish and visitors will see three new species never seen at the zoo: green sea turtles, scalloped hammerhead sharks, and spotted eagle rays. The almost $200 million project, the largest in the 112-year history of Metro Parks Tacoma, was funded by a bond issue approved by voters in 2014.
“It replaces the 55-year-old North Pacific Aquarium, which played a crucial role in the growth of the zoo and in teaching our guests about the fish and other sea animals that live in Puget Sound and the waters of the northern Pacific Ocean,” says John Houck, Deputy Director of Point Defiance Zoo & Aquarium.
However, over the years, the concrete structure of the old aquarium has been visibly deteriorating. Not surprisingly, because the facility’s concrete had been exposed to constant seawater for such a long time, the matrix also became more permeable, making the concrete susceptible to ever more deterioration. Cracks, spalls, mortar erosion, and corrosion stains are visible signs of concrete deterioration that cause increased porosity and decreased strength.
Selecting the Right Concrete Mix
“Understanding how concrete deteriorates in contact with seawater and thereby carefully selecting a mix design can help ensure the maximum service life of a concrete structure,” says Christopher Chen, Director of The Penetron Group.
Attack by most of these processes is minimized by reducing concrete permeability. Low permeability helps keep aggressive chemicals out, slows the leaching of soluble materials (lime, etc.), and limits carbonation (to protect reinforcing steel from corrosion).
Less Permeability, More Durability
“Any design enhancement or construction measure that reduces permeability will invariably improve concrete durability,” adds Christopher Chen.
Holroyd Concrete of Tacoma, WA, the project’s ready-mix supplier, specified PENETRON ADMIX SB (in premeasured, soluble bags) for the concrete used for the aquarium pump station, which keeps the saltwater circulating through the aquarium tanks. The contractor, McClure and Sons, also used PENEBAR SW swellable waterstop to seal the construction joints, PENETRON slurry replaced the air entrainment process for the pump station walls to reduce the propensity for bug holes in the new concrete, and PENECRETE MORTAR was applied to patch any voids (tie holes, bug holes, etc.) in the concrete.
Concrete Lasts 3x Longer
When PENETRON ADMIX is added to a concrete mix, it reduces permeability by permanently sealing microcracks, pores and capillaries, effectively protecting the concrete against water penetration and the effects of deterioration. The crystalline admixture also reduces shrinkage and provides self-healing of cracks over the service life of the structure. According to ACI guidelines for permeability-reducing admixtures for hydrostatic conditions(PRAH), PENETRON ADMIX provides a reduction of 70% or more in concrete permeability.
“Because Penetron crystalline technology produces an integral crystalline formation, the service life of Penetron-treated concrete is about three times that of conventional concrete,” concludes Christopher Chen.
The Penetron Group is a leading manufacturer of specialty construction products for concrete waterproofing, concrete repairs and floor preparation systems. The Group operates through a global network, offering support to the design and construction community through its regional offices, representatives and distribution channels.
For more information on Penetron waterproofing solutions, please visit penetron(dot)com or Facebook(dot)com/ThePenetronGroup, email CRDept(at)penetron(dot)com or contact the Corporate Relations Department at 631-941-9700. Reported by PRWeb 6 hours ago.
Further tests will be carried out on the water at Marine Lake in Clevedon after E. Coli was found in the water
Reported by Bristol Post 2 hours ago.
SEOUL, South Korea, July 17, 2018 /PRNewswire/ -- Shinil Group said on July 15, 2018, at 09:48, that it had found the Dmitrii Donskoii, a Russian armored cruiser ship that had sunk near the Ulleungdo of South Korea for 113 years. The stern of Donskoii was first discovered at 1.3km, N37 Degrees-29'.2" E130 Degrees-56'.3" and depth of 434m from Ulleungdo Island. Dmitrii Donskoii, the first-class armored cruiser of the Russian Baltic Fleet, which left the Baltic Sea in 1885, had sailed the oceans for 20 years, and in May 1905 the Baltic Fleet, the strongest Russian fleet, encountered the Battle of Tsushima, where 38 Baltic ships and 89 Japanese ships warred. Dmitrii Donskoii, a 5,800-ton ironclad cruiser, was one of the 38 main Baltic fleet vessels that departed from the Baltic Sea.Russian first-class armored cruiser Donskoi
FUZHOU, China, July 17, 2018 /PRNewswire/ --* Pingtan Marine Enterprise Ltd. (Nasdaq: PME)* ("Pingtan" or the "Company"), a global fishing company based in the People's Republic of China (PRC), today announced that the Company has declared a quarterly cash dividend of $0.01 per ordinary share outstanding, payable in cash on or about August 15, 2018 to shareholders of record on July 31, 2018. This marks the fifteenth consecutive quarterly dividend paid by Pingtan. Including this quarterly cash dividend, the cumulative quarterly cash dividends paid to shareholders by the Company will exceed $11.8 million. The Company reviews its dividend policy regularly and any future dividends will be at the discretion of the board of directors after taking into account of the Company's cash flow, earnings, investment updates, financial position and other relevant matters.
