Journal of Building Engineering ( IF 6.4 ) Pub Date : 2020-07-11 , DOI: 10.1016/j.jobe.2020.101596 Kiki Dwi Wulandari , Januarti Jaya Ekaputri , Triwulan , Setyo Budi Kurniawan , Widya Emilia Primaningtyas , Siti Rozaimah Sheikh Abdullah , Nur ‘Izzati Ismail , Muhammad Fauzul Imron
This present study analyzed the effect of Rhizopus oligosporus and Sporosarcina pasteurii addition on the properties and surface morphology of fly ash-based geopolymer paste mixtures as a green sustainable material. The addition of bottom ash and a foaming agent were also conducted to improve the paste quality. Compressive strength, porosity, X-Ray Diffractometry (XRD) and Scanning Electron Microscopy (SEM) tests were performed sequentially. The addition of microbes can improve the compressive strength of specimens by up to 43.75%. All microbe-added specimens exhibited a higher amount of closed porosity compared to the non-microbe-added specimens which also responsible to the higher compressive strength. The addition of foaming agent and bottom ash to the mixtures showed a negative effect to the inoculated microbes. SEM analysis showed the initial result of the potential of R. oligosporus and S. pasteurii as a self-healing agent for fly ash-based geopolymer pastes.
中文翻译:
添加微生物对粉煤灰基聚合物糊料性能和表面形态的影响
本研究中分析了影响少孢根霉和Sporosarcina巴斯德此外,粉煤灰基地质聚合物糊状混合物作为绿色可持续材料的特性和表面形态也很重要。还进行了底灰和发泡剂的添加以改善糊的质量。依次进行抗压强度,孔隙率,X射线衍射(XRD)和扫描电子显微镜(SEM)测试。微生物的添加可以将样品的抗压强度提高多达43.75%。与未添加微生物的样品相比,所有添加了微生物的样品均表现出更高的封闭孔隙率,这也导致较高的抗压强度。向混合物中添加发泡剂和底灰对接种的微生物显示出负面影响。扫描电镜分析显示低聚孢子虫和巴氏葡萄球菌(S. pasteurii)作为粉煤灰基地聚合物浆料的自修复剂。