Portland Cement (1824)

The second industrial age also saw the reemergence of concrete and higher-strength artificial cements.

Decorative use of Portland Cement panels on London’s Grosvenor estate, Westminster.

image source: https://en.wikipedia.org/wiki/Portland_cement#/media/File:Grosvenor_estate,_Westminster,_London.jpg

Martin’s Creek Portland Cement Company Locomotive,Pennsylvania,1903

image source: https://search.creativecommons.org/photos/adfbda69-a3f7-45cc-8261-afd86e9b29bf

Lime mortar—made of lime, sand, and water—has been known since ancient times. It was improved in the late 18th century by British engineer John Smeaton, who added powdered brick to the mix and made the first modern concrete, known as Hydraulic Concrete.

William Aspdin patented the first true artificial cement, which he called Portland Cement, in 1824. The name was intended to recall the same high quality of Portland stone.

William Aspdin

image source:  https://en.wikipedia.org/wiki/File:William_Aspdin_Radford_cyclopedia_Volume_1.jpg

To make Portland cement, Aspdin burned limestone and clay together in a furnace; the clay provided silicon compounds, which when combined with water formed stronger bonds than the calcium compounds of limestone.

Nowadays a Portland cement cylinder is made by heating a mixture of raw materials to a calcination temperature above 600 °C (1,112 °F) and then a melting temperature, which is around 1,450 °C (2,640 °F) for modern cement, to sinter clinker materials.

Portland Cement

image source: https://search.creativecommons.org/photos/bcbaba5d-fd8d-4063-81e5-b4e83be41029 by Яick Harris

This compound is made from unprocessed common natural materials. Consequently, the characteristics of Portland cement clinker can vary from one cement factory to another. To limit variations in the technological properties of Portland cement, acceptance standards have now been developed.

A 10 MW cement mill, producing cement at 270 tonnes per hour.

image source: https://en.wikipedia.org/wiki/Portland_cement#/media/File:LDCementFM10MW.jpg

Info sources:



Ads Blocker Image Powered by Code Help Pro

Ads Blocker Detected!!!

We have detected that you are using extensions to block ads. Please support us by disabling these ads blocker.

Powered By
Best Wordpress Adblock Detecting Plugin | CHP Adblock