Abstract:
Steel Slag is a By-Product from the Iron or Steel Industry Manufacturing. The recycling and utilization of steel slag in base or sub-base, a previously refered to waste product, is a major contributing factor to the reduction in depletion of the earth's natural aggregate resources in Thailand. Best properties of stcel slag are high strcngth, maximum durability and good permeability but non unconfined co~npressi\.e strcngth. So, that thesis is study in case by ccinent stabilization to improved some characteristic of steel slag to compare soil cement base standard of Dcpart~nent of High~xlay, which consider unconfined co~npressibe strcngth at 7 days only. This steel slag samples became from Chonburi Steel Mill Services Limited, Chonburi Industrial Estate (Bowin). Cemcnt contents for steel slag are 1 and 2 percent weight of steel slag. The molded specimens are compacted by Standard and Modified Proctor, cured are 3, 7, 14 and -28 days before Unconfined Compression and Unsoaked CBR Test. Results of data analysis show that cement stabilized steel slag will be increase up Unconfined Compressive Strength and Unsoakcd CBR by increase of cement content and curing days. Beginning to 14 days and after 14 days cured are Palabola and Linear Model Trend from relation of UCS, Unsoaked CBR versus cement eontent.. Furthermore, relationship between UCS vs E,,, UCS vs Unsoaked CBR and Unsoaked CBR vs E,, both compacted methods are Linear Model trend. Results indicated that steel slag mixed with 2 percent by wcight will give an unconfined colnpressive strength of 24.03 kg/cm- after curing for 7 days, Unsoaked CBR ~aluc higher than 324 percent for the some curing period. Bccause of steel slag had high strcngth at first, when lightly cement mixed to encouraging UCS and Unsoaked CBR higher value evident.