to aerate concrete

См. также в других словарях:

• aerated concrete — noun Lightweight concrete made by a process which traps gas bubbles in the mix • • • Main Entry: ↑aerate …   Useful english dictionary

• environmental works — ▪ civil engineering Introduction       infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …   Universalium

• Alton, Rhode Island — Alton is a small village (about 250 residents) within the town of Richmond, Rhode Island. It is located about one hour south of Providence, the state s capital. St. Thomas Episcopal Church is a gathering place for community members in the center… …   Wikipedia

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• Whitewater — is formed in a rapid, when a river s gradient drops enough to disturb its laminar flow and create turbulence, i.e. form a bubbly, or aerated and unstable current; the frothy water appears white. The term is also used loosely to refer to less… …   Wikipedia

• Constructed wetland — Vertical Flow type of Constructed Wetlands A constructed wetland or wetpark is an artificial wetland, marsh or swamp created as a new or restored habitat for native and migratory wildlife, for anthropogenic discharge such as wastewater,… …   Wikipedia

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• Coarse bubble diffusers — PVC MaxAir coarse bubble diffuser in concrete basin. Courtesy of Environmental Dynamics Inc. Coarse bubble diffusers are a pollution control technology used to aerate and or mix wastewater for sewage treatment. They produce 1/4 to 1/2 inch… …   Wikipedia