Liu, Xiaohai published the artcileImprovement in chloride immobilization of cement-metakaolin system by triisopropanolamine, Product Details of C9H21NO3, the publication is Applied Clay Science (2020), 105656, database is CAplus.
Metakaolin (MK) is a widely used admixture in chloride immobilization which is conducive to the durability of reinforced concrete. In this study, triisopropanolamine (TIPA) was added into cement-MK system to improve the chloride immobilization by expediting the pozzolanic reaction of MK. The effect of TIPA on hydration of binder composed of 90% Portland cement and 10% MK was investigated, and the hydration behavior was characterized by thermogravimetric anal., X-ray diffraction, NMR spectroscopy, and mercury intrusion porosimetry, based on the evaluation of pozzolanic reaction of MK by ion dissolution Results indicated that TIPA promoted the hydration of both MK and cement, and chloride immobilization was also improved. The mechanism for the improvement was involved in three aspects: a) TIPA facilitated the dissolution of aluminum from MK to obtain more chloroaluminate salts, strengthening chem. binding; b) TIPA accelerated hydration of cement and MK for more C-S-H gel, conducive to the phys. adsorption; c) TIPA increased the amount of hydrates to refine the pore structure, hindering the migration of chloride ion. This investigation provided one new method for improving the pozzolanic reaction of MK to enhance chloride immobilization of cement-MK system.
Applied Clay Science published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Product Details of C9H21NO3.
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