From the study: > In addition to the features described above, aggregate-scale relict lime clasts, also referred to as remnant lime or lime lumps, are a ubiqui

From the study: > In addition to the features described above, aggregate-scale relict lime clasts, also referred to as remnant lime or lime lumps, are a ubiquitous and conspicuous feature of both architectural and maritime Roman concretes. The presence of these distinctive bright white features has been previously attributed to several scenarios including incomplete or over-burning during the calcining of lime (20), carbonation before concrete preparation (30), incomplete dissolution during setting (12), or insufficient mixing of the mortar (14). 20: https://www.sciencedirect.com/science/article/abs/pii/S0008884605003145 https://www.sciencedirect.com/science/article/abs/pii/S00088... 30: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1475-4754.1997.tb00786.x https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1475-4754.... 12: https://www.amazon.com/Building-Eternity-Technology-Concrete-Engineering/dp/1789256364 https://www.amazon.com/Building-Eternity-Technology-Concrete... 14: https://www.cambridge.org/core/journals/journal-of-roman-archaeology/article/abs/reproducing-a-roman-maritime-structure-with-vitruvian-pozzolanic-concrete/E45CF9F36785D1995D1EEF5D9895E93C https://www.cambridge.org/core/journals/journal-of-roman-arc...