Ernesto Silitonga, Harun Sitompul, Rumilla Harahap, Nono Sebayang, Ronal Butar-Butar, Iskandar Tambunan
Various binders such as pozzolanic binder already known for its ability on enhancing the physical characteristic on concrete or soil stabilization. Pozzolanic reaction requires several primary factors to provide maximum improvement on physical characteristic. This research is aimed to identify the effect of the origin characteristics (physical and mineralogical) of pozzolanic binder on increasing the strength on engineering properties in soil improvement work. Two type of fly ashes are utilized in this study with different types of physical and mineralogical characteristic. Laser Granulometric test, and mineralogical test are realized to identify the characteristics of each fly ash utilized. To determine the effect of the binder addition (with different characteristics), several tests are performed such as unconfined compressive test, tensile strength test are realized to identify the effect of fly ash addition. The results show that binder with higher SiO2, Fe2O3 and Al2O3 content produces higher strength. © Published under licence by IOP Publishing Ltd.
Universitas Negeri Medan, Jl. Willem Iskandar Pasar V Medan Estate, North Sumatera, 20221, Indonesia
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