Search results
Results from the WOW.Com Content Network
Self-leveling concrete was invented in 1952 by Axel Karlsson from Sweden. The first product was a combination of wood glue, fine sand and cement with additives. [1] It was called flytspackel, which directly translates to "floating putty". The term self-leveling can be traced back to a patent applied by the company Lafarge in 1997. [2]
Power screeds can be powered by gas, electricity or hydraulics. [citation needed] In concrete, prior to the mix drying, the concrete should be smoothed out on the desired surface. The compaction performance of the power concrete screed is mainly determined by the centrifugal force of the vibration force and only to a minor extent by the static ...
In civil engineering, concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured and is commonly performed at small businesses and private homes as well as at factories, warehouses, airports and on roads, highways and other infrastructure.
Self-consolidating concrete or self-compacting concrete (SCC) [1] is a concrete mix which has a low yield stress, high deformability, good segregation resistance (prevents separation of particles in the mix), and moderate viscosity (necessary to ensure uniform suspension of solid particles during transportation, placement (without external compaction), and thereafter until the concrete sets).
United States Navy Seabees use a screed (noun) to screed (verb) wet concrete. The form-work acts as screed rails.. In the United States, a person called a concrete finisher performs the process of screeding, which is the process of cutting off excess wet concrete to bring the top surface of a slab to the proper grade and smoothness.
Download as PDF; Printable version; In other projects Wikidata item; ... Self-levelling may refer to: Self-levelling suspension; Self-leveling paint; Self ...
The free floating screed has become standard because of the smoothing or averaging effect it can have on the existing base course. The free floating screed has a number of forces acting on it that, when in equilibrium, allow the depth behind the screed to be constant. Tow arm pull: the force exerted on the screed by the paver dragging it
Jackson 6700 switch tamping machine A Plasser & Theurer 09-16 CSM Tamper / Liner A MATISA tamper at Keighley in February 2017 Customer VolkerRail. A tamping machine or ballast tamper, informally simply a tamper, is a self-propelled, rail-mounted machine used to pack (or tamp) the track ballast under railway tracks to make the tracks and roadbed more durable and level.