Revision with justification of criticisms
Reviewer #1: The paper titled as "Effects of Nano-silica and Rock Asphalt on Rheological Properties of Modified Bitumen" contains important information. In the study, nano-silica and rock asphalt were used separately and together in bitumen modification. But, how the rates of additives used are chosen is not explained. The BBR test should be performed on the PAV residue. But, the rheological evaluation was done only on the original binders. Experiments should also be carried out on short and long term aged samples in order to make detailed rheological evaluation. Although the use of nano-silica in the study increased the value of G*/sin <delta>, the performance grade high temperature value (PG 70) did not change. Therefore, it contributes to the formation of permanent deformation. The cause of this situation, which is not suitable for the literature, should be explained. Some minor errors identified in the study are indicated in the following file.
I think that it is not appropriate to print this work in Journal of Construction and Building Materials without stated corrections.




Reviewer #3: The paper presents a comprehensive study on the effect of different combinations of rock asphalt and nano-silica on binder properties at different proportions. The researchers have done a good amount of work to come to the conclusions made on the paper. The statistical analysis and discussions are corroborated by the data presented.

However, the authors need to thoroughly check the grammar of the paper. Typos like "conbinations", "creaking"and many more exist. Choice of wrong words also exist such as: In line 7 of the abstract, "viscometer" needs to replaced by "viscosity".

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