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Putzmeister was founded by Karl Schlecht in 1958. [3] Schlecht designed a mortar machine based on his diploma thesis at the University of Stuttgart. [4]In 1986, Putzmeister 52Z's were used in the Chernobyl nuclear accident, pumping over 300,000 m 3 (390,000 cu yd) of concrete to entomb reactor number 4, setting a world record at the time for volume pumping.
The station is known by the world record in high-rise concrete pumping during the reconstruction in 1994. The achieved record was 532m. [2] During construction of the plant, there was discovered the remains of a Bronze Age pile-dwelling village (over 10 000 piles) on the east of the Lake Ledro. [6]
The world record for concrete pumping was set on 7 August 2009 during the construction of the Parbati Hydroelectric Project, near the village of Suind, Himachal Pradesh, India, when the concrete mix was pumped through a vertical height of 715 m (2,346 ft). [155] [156]
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Groundwater pumping has been causing the land to sink at a record pace in California's San Joaquin Valley. New research suggests ways of addressing the problem.
A prime example is on February 15, 2014, Conco broke the Guinness World Record for the largest continuous mat pour to date in just 18 + 1 ⁄ 2 hours. The event was verified by an official Guinness World Records adjudicator who was on site during the pour. [4]
The business group is the world's second largest concrete pump manufacturer, behind Putzmeister, another German manufacturer and subsidiary of the Sany Group. [6] [2] [7] Product-wise, XCMG's 3,600-tonne, 88,000 tonne-meter rated lattice boom crawler crane for power generation plants and petrochemical facilities began its production that year.
Schwing Concrete pump. The Schwing Group was founded as a medium-sized enterprise on 17 March 1934, by Friedrich Wilhelm Schwing (* 1909; † 1992), a locksmith from Wanne-Eickel. In 1957, Schwing built the world's first oil-hydraulic two-cylinder concrete pump. Starting in 1964, the company also built the first large concrete mixers.