Hillsborough County Florida is using a mix of expanding polyurethane foam and conventional cement grout as a more cost effective means of filling sinkholes. Officials say the mix uses 30 to 40% less grout adding […]
August 11, 2011 MOUNT AIRY, NC—Gary Molstre, owner of Mudpumpers Mudjacking, Moorehead, MN, says there is no chance they are changing the company name, but they are definitely changing the material they use to repair highways and bridges to an engineered polyurethane foam system and they’ve coined a term for it: “foamjacking”.
Mudjacking, also called slab jacking, concrete lifting, concrete raising, and slab leveling, is the traditional method of fixing damaged concrete highways and bridge approach panels. The process was developed in the 1930s and involves pumping “mud” (everything from clay, sand, and loam, to Portland cement, fly ash, lime, casting plaster, and hot asphalt have been used) beneath concrete slabs that have become uneven, sunken, and/or pulled away from bridge approaches due to soil erosion and/or the soil being compacted or compressed from the sheer weight of the slab. Mudjacking involves drilling holes in the concrete and pumping “mud” and pressure beneath to lift the slab to its original place and keep it there. [Editor] Click th rough for the rest of the press release. [/Editor]
URETEK ICR was contacted regarding settlement in two identical 1.5 million bushel grain flat storage buildings. The overall structure dimensions were 600 ft. long by 135 ft. wide with a Quonset style roof . Below the floor of the storage buildings, a tunnel with conveyance system and a series of aeration tunnels were installed to facilitate moisture control and grain transport.
[Editor] Check out the rest of this contributed Article from Ty Taylor of URETEK ICR, a GeoPrac.net sponsor. Ty describes how the foundations were lifted and stabilized using the URETEK Method®[/Editor]