The present study investigates glass and cement compatibility with a view to use glass as a cement replacement. Amber, flint and green glasses were chosen due to their prevalence in the Greek market as packaging mater...The present study investigates glass and cement compatibility with a view to use glass as a cement replacement. Amber, flint and green glasses were chosen due to their prevalence in the Greek market as packaging materials. The factors under investigation were the pozzolanicity of the glass cullet, the hydration rate and the mechanical strength development of the cement pastes, as well as the expansion of the specimens due to alkali-silica reaction. Moreover, the potential enhancement of glass pozzolanic activity was examined. The results of the study were encouraging to show the potentiality of utilising glass cullet in cementitious products.展开更多
The properties of binary and ternary cement pastes containing glass powder (GP) were examined.Hydration at early age was evaluated using semi-adiabatic calorimetry and at late ages using non-evaporable water content a...The properties of binary and ternary cement pastes containing glass powder (GP) were examined.Hydration at early age was evaluated using semi-adiabatic calorimetry and at late ages using non-evaporable water content and thermogravimetric analysis.The transport characteristic was assessed by measuring electrical resistivity.The binary paste with slag showed the highest hydration activity compared to the binary pastes with GP and fly ash (FA).The results indicated that the pozzolanic behavior of the binary paste with GP was less than that of the binary pastes with slag or FA at late ages.An increase in the electrical resistivity and compressive strength of the binary paste with GP compared to other modified pastes at late ages was observed.It was shown that GP tends to increase the drying shrinkage of the pastes.Temary pastes containing GP did not exhibit synergistic enhancements compared to the respective binary pastes.展开更多
文摘The present study investigates glass and cement compatibility with a view to use glass as a cement replacement. Amber, flint and green glasses were chosen due to their prevalence in the Greek market as packaging materials. The factors under investigation were the pozzolanicity of the glass cullet, the hydration rate and the mechanical strength development of the cement pastes, as well as the expansion of the specimens due to alkali-silica reaction. Moreover, the potential enhancement of glass pozzolanic activity was examined. The results of the study were encouraging to show the potentiality of utilising glass cullet in cementitious products.
文摘The properties of binary and ternary cement pastes containing glass powder (GP) were examined.Hydration at early age was evaluated using semi-adiabatic calorimetry and at late ages using non-evaporable water content and thermogravimetric analysis.The transport characteristic was assessed by measuring electrical resistivity.The binary paste with slag showed the highest hydration activity compared to the binary pastes with GP and fly ash (FA).The results indicated that the pozzolanic behavior of the binary paste with GP was less than that of the binary pastes with slag or FA at late ages.An increase in the electrical resistivity and compressive strength of the binary paste with GP compared to other modified pastes at late ages was observed.It was shown that GP tends to increase the drying shrinkage of the pastes.Temary pastes containing GP did not exhibit synergistic enhancements compared to the respective binary pastes.
