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This cement was made at the Portland Cementfabrik Stern at Stettin, which was the first to use a Hoffmann kiln. [9] The Association of German Cement Manufacturers issued a standard on portland cement in 1878.
Portland cement blends are often available as inter-ground mixtures from cement producers, but similar formulations are often also mixed from the ground components at the concrete mixing plant. Portland blast-furnace slag cement , or blast furnace cement (ASTM C595 and EN 197-1 nomenclature respectively), contains up to 95% ground granulated ...
There he introduced a new and substantially stronger cement, using a modified recipe for cement-making, the first "modern" Portland cement. [4] In 1844 Joseph retired, transferring his share of the business to James. James moved to a third site at Ings Road in 1848, and this plant continued in operation until 1900.
From 1860, he set up cement plants at Altona and Lagerdorf, these being the first plants to make modern Portland cement outside the UK. [6] He died at Itzehoe near Hamburg on 11 April 1864. [3]: 203 The Northfleet plant continued making Portland cement on a small scale as Robins & Co. Ltd. until it was taken over by APCM (Blue Circle) in 1900 ...
One of the first concrete mixers ever was developed in 1900 by T.L. Smith in Milwaukee. The mixer already exhibited the still common basic construction with a tiltable conical drum (as double cone at that time) with blades. On February 9, 1904, the first portable concrete mixer was patented by Richard Bodlaender, an inventor from Breslau ...
Stephen invented a self-discharging motorized transit mixer that was the predecessor of the concrete mixer truck and applied for a patent in 1916. [2] However, the patent was rejected in April 1917 by the patent office because it was believed that a truck could not support the weight of a concrete mixer on top of it. [5]
Starbucks has made a big change to its iced coffee — and people online have already noticed. Starbucks revealed to TODAY.com that it rolled out a major recipe update to its iced coffee starting ...
He continued to find new uses for the material, and obtained more patents — iron-reinforced concrete pipes and basins (1868); iron-reinforced concrete panels for building façades (1869); bridges made of iron-reinforced concrete (1873); reinforced concrete beams (1878). In 1875, the first iron-reinforced concrete bridge ever built was ...