Chemistry is an experimental science, Application In Synthesis of 2,4-Dichlorobenzaldehyde, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 874-42-0, Name is 2,4-Dichlorobenzaldehyde, molecular formula is C7H4Cl2O, belongs to chlorides-buliding-blocks compound. In a document, author is Hou, Wei.
Determination of sulfate content in OPC and CSA cement by sodium carbonate extraction method
The penetration of sulfate ions into the concrete often causes durability problems such as spalling, cracking, and strength loss. Traditional methods for sulfates content test in cement-based materials, a large number of toxic and high-risk chemical reagents such as hydrochloric acid, barium chloride, barium chromate are used. In this research, the sodium carbonate extraction (SCE) method was used to determine the sulfates content in Ordinary Portland cement (OPC) and Calcium sulphoaluminate (CSA) cement while the gravimetric method was used as standard method to evaluate the accuracy of SCE method. The optimum SCE method operation conditions were determined as 0.30 mol/L sodium carbonate solution, liquid-solid ratio at 100:1 and particle size smaller than 500 mu m. The results indicated that the replacement of gravimetric method with SCE method for sulfates content test is acceptable in CSA cement but improper for Portland cement system. Through the FTIR, XRD, and TG-DSC analysis, it was found that the absorption of sulfate ions by C-S-H gels was responsible for the failure of SCE method in Portland cement system. (C) 2020 Elsevier Ltd. All rights reserved.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 874-42-0. Application In Synthesis of 2,4-Dichlorobenzaldehyde.