Remarks Based on Nanoindentation Results

Based on the results presented in this study, the following conclusions can be made:

• In all three mixes, the hardness value of aggregate increases due to moisture conditioning. Probably, wet condition modifies aggregate surface mineral in a way that increases the hardness value in wet conditioned aggregate.

• The mastics of SP-B and SP-C have shown similar behaviour, that is hardness value decreases in mastic due to wet condition. Both of these mastics contain a PG 70-22 binder. However, the mastic of SP-III has show opposite trend. Its hardness increases due to moisture conditioning. This mastic contains a higher performing grade (PG 76-28) binder.

• The modulus or stiffness values obtained from nanoindentation did not show any relation with moisture damage.

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