The effects of nanomaterials on microstructures of sludge ash cement paste.
To broaden the beneficial reuse of sewage sludge, small amounts of nanomaterial were considered as additives to evaluate influences of nanomaterials on microstructures of sludge cement paste. Paste specimens were manufactured using different mix designs and cured for various ages. Tests such as scanning electron microscope, X-ray diffraction, transmission electron microscope, and mercury intrusion porosimetry were then performed. Results obtained indicated that the quantities of crystallization in hydrates rose with the increased amounts of nanomaterial added. Moreover, nanomaterial additives could make crystallizations denser, pore sizes smaller, and the number of pores decreased. Consequently, the strength of sludge cement paste became better as more amounts of nanomaterial were added.
Lin
Deng-Fong
DF
Department of Civil and Ecological Engineering, I-Shou University, Taiwan, Republic of China. dflin@isu.edu.tw
Tsai
Min-Chin
MC
D017743:Equipment Reuse; D008855:Microscopy, Electron, Scanning; D017348:Microscopy, Electron, Scanning Transmission; D049329:Nanostructures; D016062:Porosity; D012722:Sewage / Q000032:analysis*; D014961:X-Ray Diffraction
D012722:Sewage