Investigation on Carbonation of Sulphoaluminate Cement with Layered Double Hydroxides
The increasing importance of the ecologically minded production of building materials makes it necessary to develop reasonable alternatives to the CO2—intense production of ordinary Portland cement (OPC).The development of new or modified concrete is an important part of existing strategies to improve performance and minimize life-cycle costs.In the present study, carbonation resistance properties of sulphoalu minate cement (SAC) concrete incorporating layered double hydroxides (LDHs) were investigated.X-ray diffraction (XRD) and IR-spectroscopy were employed to characterize the component and structural changes of LDHs and cement paste before and after carbonation test.Carbonation re sistance of concrete was experimentally evaluated.Finally, carbonation of Portland cement and SAC concrete was compared.The experimental re suits show that carbonation depth decreases remarkably with the addition of LDHs, especially the calcinated LDHs.Carbonation depth of SAC con crete is smaller than that of PC concrete regardless of curing time.
Sulphoaluminate cement Carbonation Layered double hydroxides
Haining Geng Ping Duan Wei Chen Zhonghe Shui
State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 43 State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 43
国际会议
武汉
英文
408-418
2013-10-23（万方平台首次上网日期，不代表论文的发表时间）