Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 98946-18-0, Name is tert-Butyl trichloroacetimidate, molecular formula is , belongs to chlorides-buliding-blocks compound. In a document, author is Alnuaim, Ahmed, Recommanded Product: 98946-18-0.
Sustainable application of processed TBM excavated rock material as green structural concrete aggregate
In this study, we investigate the potential use of the material excavated by tunnel boring machines (TBMs) as structural concrete aggregate. Accordingly, several experimental and statistical investigations on the mechanically and thermally processed material were carried out. The raw TBM excavated material contained a considerable amount of macro-micro quartz sand. Additionally, the poor-grain size distribution of the TBM material and its weak interface bonding demonstrated the impracticality of using it as a sand filler. Microstructural investigations of the crushed limestone material revealed that around 20% of it was composed of calcium carbonate, whereas no pozzolanic compounds were observed. The results indicate that the TBM excavated material can be used as a structural concrete aggregate. The properties of the fresh TBM-aggregate-based concrete were well within the acceptable range. The porosity and chloride diffusivity of the TBM-aggregate-based concrete mixtures were slightly higher than those of the control mixture. The aggregate processing method had a negligible influence on the strength and durability of the concrete. Furthermore, the concrete porosity and permeability exhibited a decreasing trend with the increase in the TBM aggregate content. The compressive strength of the TBM aggregate concrete was less than that of the control mixture. However, thermal treatment of the TBM aggregate can reduce this loss in strength. In addition, reasonably reliable isoresponse models were developed to predict the strength and durability of the TBM-aggregate-based concrete. (C) 2020 Elsevier Ltd. All rights reserved.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 98946-18-0, in my other articles. Recommanded Product: 98946-18-0.