| 【文章摘要】 Cementitious materials have been around for a very long time, with the ancient Romans often cited as the first accomplished engineers to exploit them via volcanic pozzolanas. Throughout the 1700s and 1800s, significant development took place in England and France. Ultimately, ordinary portland cement-named after the Isle of Portland in Dorset, England- dominated the world as the key ingredient for the most essential material for modern infrastructure: concrete. Arguably, ready mixed concrete (RMC) plants produce the highest-quality concrete and are now controlled by batching systems. |