He used limestone and clay as raw materials, mixed them in a certain proportion, calcined the mature materials in a vertical kiln similar to lime burning, and then made cement by grinding. Because the color of hardened cement is similar to the stone used in construction in Portland, England, it is named Portland cement. It has outstanding architectural performance and epoch-making significance in the history of cement.
Extended data:
Cement is divided into:
(1) Ordinary cement: cement commonly used in general civil engineering. General purpose cement mainly refers to six kinds of cement specified in GB 175—2007, namely portland cement, ordinary portland cement, slag portland cement, pozzolanic portland cement, fly ash portland cement and composite portland cement.
(2) Special cement: cement for special purpose. For example: G-class oil well cement and road portland cement.
(3) Characteristic cement: a kind of cement with outstanding performance. Such as: quick-hardening portland cement, low-heat slag portland cement, expanded sulphoaluminate cement, phosphoaluminate cement and phosphate cement.
Baidu encyclopedia _ cement