Correlation Between DCP And CBR On Subbase With GGBFS As Replacement For Fine Aggregate

Astaningrum, Felisitas Nindi and Lulie, Yohannes Correlation Between DCP And CBR On Subbase With GGBFS As Replacement For Fine Aggregate. [Research]

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Abstract

Subbase is a layer of construction that continues the load from the base to the sub grade in the form of compacted grained material. The government's new roads needs of a large amount of natural aggregate to fulfill the target. The use of natural aggregate for construction which is done massively and continuously will make it scarce. The replacement of fine aggregate with waste material such as ground granulated blast furnace slag (GGBFS) will prevent the environmental imbalance. When replacement is conducted? t~e str~ngth. of the new subbase need to test using California bearing ratio (CBR). CIVIl engmeermg always encounter difficulties in obtaining representative CBR values for pavement layers because the CBR test is time consuming and it cannot be easily determined in the field. While using DCP test just takes a very short time for analysis and interpretation. In this study, the correlation between DCP and CBR values of will be conducted to evaluate the relationship between them are strong or weak due to alternative test of subbase strength

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