This is a very weak material that was used essentially in the making of foundations and in buildings for the populace. Conventional mineralogical analysis does not provide satisfactory explanation of the hardening mechanism. Yet, owing to the powerful MAS-NMR Spectroscopy investigation of these archaeological cements, one was able to distinguish two geopolymeric archaeological Roman cement analogues, dating to the 2nd.
Concrete experts talk today about how to make concrete durable.
Many ancient Roman concrete buildings are still in use after more than 2000 years. Technical keywords related to these high-performance cements have not been properly understood before recent linguistic studies and the development of geopolymeric cements shed new light and new interpretation on these texts. Ancient Egypt's legendary reputation as master of the stone arts spans almost the entire history of civilization. The evidence presented here, however, demonstrates that the ancient artists knew how to convert ores and minerals into a mineral binder for producing stone artefacts, such as statues that were not carved but rather cast in molds, synthetic stone statues. The stele is the autobiography of the sculptor Irtysen who lived under one of the Mentuhotep Pharaohs, 11th.