CRT glass is manufactured at very high temperature (above 1000 deg.). Therefore, CRT glass should be "Crystalline" in form which is mostly non-reactive. However, some of the researchers (like the following reference) reported alkali–silica reaction (ASR) while using CRT glass as fine aggregate in cement mortar. As CRT glass is in non-reactive form, how ASR problem occur in such mortar.
Ling, T.-C., Poon, C.-S. (2013) Effects of particle size of treated CRT funnel glass on properties of cement mortar. Materials and Structures; 46(1-2): 25-34.
Dear Amrul:
Cement ( 62-76% СаО, 20-23% SiO2, 4-7% А12О3, 2-5% Fе2О3, 1-5% MgO). 62-76% СаО, 20-23% SiO2, 4-7% А12О3, 2-5% Fе2О3, 1-5% MgO; Glass (Na2O PbO * 6SiO2).Cement and glass contain basic (Na2O) , acidic (SiO2) , amphoteric oxide (Аl2О3 ). When heating the basic oxide reacts with acidic oxide. The oxides are dissolved in the water. In the water they also react. The CRT glass is crushed into small particles. The crushed material is better able to interact chemically with another substance. Form strong covalent bonds cement mortar
Best Regards.
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