Mô phỏng quá trình thủy hóa xi măng có sử dụng tro bay, muội Silic bằng công cụ số VCCTL

Abstract

The Virtual Cement and Concrete Testing Laboratory (VCCTL) is a numerical tool developed by the National Institute of Standards and Technology (NIST) in 2001. Currently, the tool is still being improved by NIST, a system of universities and cement companies. The objective of the development of the VCCTL numerical tool is to predict the properties of fresh as well as hardened concrete based on concrete mixing conditions and sample curing conditions. VCCTL helps determine the optimal design of concrete mixes, reducing the number of inefficient samples that need to be carried out in the laboratory, thereby saving time and cost for construction. By simulating the hydration process of three types of cement slurry mix: 100% cement, 20% fly ash + 80% cement and 20% silica fume + 80% cement, the article will introduce about VCCTL as well as the necessary input parameters to simulate the hydration process of cement so that some mechanical properties of paste can be predicted