Influence of slag on the hydration of sulphoaluminate cement under different temperatures
LIU Gang
LIAO Yishun
CHENG Yi
LI Shuangquan
Abstract：The influence law of slag on the setting time,compressive strength,chemical shrinkage,electrical resistivity and hydration products of sulphoaluminate cement under the temperatures of 30 ℃ and 50 ℃ were investigated respectively.The results showed that when the temperature was 30 ℃,the setting time of cement paste was shorten obviously with slag,the value of the chemical shrinkage and the electrical resistivity also decreased obviously.When the content of slag was 10％,the compressive strength of cement paste of 3 d and 28 d remained unchanged roughly.When the temperature was 50 ℃,the setting time of cement paste was obviously less than that under 30 ℃,the value of chemical shrinkage decreased,the compressive strength of cement paste of control group of 28 d decreased obviously,and the strength of cement paste of 28 d when the dosage of slag was 10％ also decreased obviously,the amount of ettringite after 28 d of hydration was obviously less than that of 3 d.
Keywords：sulphoaluminate cementslagtemperatureettringiteelectrical resistivity
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 22-26 )