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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-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]
The mix is prepared on site using a specialized truck. The truck contains a tank for water, a mixing tank, a holding tank, a pump, and a conveyor for the sand and calcined gypsum. A hopper for the sand and gypsum is mounted externally on the vehicle. [8] To prepare the mix, the sand and calcined gypsum are added to the hopper and mixed.
Landscape fabric is not required in every application. All compaction is usually performed with a plate compactor or hand tamper. All sand-containing materials (e.g., concrete sand, rock dust, or minus crushed rock) must be soaked with water for effective compaction. The base layer should be 6" deep for walkways, or 12" deep for driveways. [10]
This sheet-pan chicken and mushroom recipe features kale, mushrooms and beans—all prebiotic foods that offer plenty of fiber to help you maintain a healthy gut. View Recipe Fajita-Inspired Pasta ...
Bokksu snack crates ship treats from Japan, including sweets, teas, crunchy finds, and delicacies. The Bokksu staff curates each box after extensive in-house testing, ensuring each offering is ...
Sales plunged as the company was starved of the cash needed to invest in stores to make them attractive to shoppers. In 2018, after years of closing hundreds of stores, the company filed for ...
Enough resin is used to allow each aggregate particle to adhere to one another and to the base yet leave voids for water to permeate through. Resin bound paving provides a strong and durable surface that is suitable for pedestrian and vehicular traffic in applications such as pathways, driveways, car parks and access roads [citation needed].