Peat soil improvement using cement and quarry dust

Abstract Peat soil is one of the types available in Malaysia, which has a high compressibility and low shear strength. Thus, peat considered inappropriate to support construction site its natural state. Among methods suitable for stabilization using cement. However, quantity cement required quite large made this method not too environmentally friendly due carbon dioxide, CO 2 emission from production. Therefore, study, quarry dusts are used partially substitute ordinary Portland stabilization. Quarry were expected potentially act as pozzolan (containing cementitious properties replace cement). Laboratory testing determine physical, chemical mechanical carried out investigate strength, acidity microstructure treated untreated soil. For properties, Unconfined Compressive Strength test (UCS), was conducted strength., Chemical (Scanning Electron Microscope (SEM) Energy Dispersive X-Ray (EDX)) tests assess mechanism strength gain stabilized The results obtained show that by replacing with 5% dust, increases 47 684 kN/m , loading such car park area outdoor sport court. microstructural also PC PCQ5 calcium, Ca decreases an effect on increasing decreasing acidity.