Research on Basalt Fiber Oil/Asphalt Absorption Performance and Test Methods Suitable for Asphalt Mixture with Different Structures

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

After a thorough review, it is evident that the manuscript requires a major revision to address several critical issues:

The paper contains grammatical errors and awkward phrasing. A careful proofreading and refinement of language are necessary for clarity and professionalism.

 

Incorporate the following studies into the literature review to provide a more comprehensive background for the readers, enhancing the overall context and relevance of the study:

-Swelling-degradation dynamic evolution behaviors of bio-modified rubberized asphalt under thermal conditions

-Exploring temperature-resilient recycled aggregate concrete with waste rubber: An experimental and multi-objective optimization analysis

 

Please provide a more detailed explanation of the temperature-dependent decrease in fiber asphalt absorption rate and its correlation to changes in asphalt viscosity.

 

In the comparison of the three test methods (standing, extrusion, and vibration), why does the standing method result in a significantly higher fiber asphalt absorption rate, and how does this affect its suitability for determining absorption rates in asphalt mixtures?

 

How does the volume ratio difference of LF and FBF asphalt mixture at different temperatures relate to their asphalt absorption rates, and how is this analysis relevant to the determination of fiber asphalt absorption rate for gap-graded asphalt mixture?

 

Why is 160°C recommended as the test temperature for determining fiber asphalt absorption rate, and how does this temperature align with the practical conditions of asphalt mixture paving and rolling?

 

Can you elaborate on the minimal effect of basalt fiber incorporation on the oil-stone ratio in dense-graded asphalt mixture and how the pressure conditions contribute to this observation?

 

Please provide more details on the complexity of the extrusion method for fiber absorb asphalt capacity testing in dense-graded asphalt mixture and how using kerosene as a substitute addresses this complexity

 

How does the apparent viscosity of SBS modified asphalt at various temperatures impact the fiber asphalt absorption rate, and in what way does the relationship between asphalt viscosity and fiber absorption rate vary with temperature?

 

Why is kerosene considered a suitable substitute for asphalt in the extrusion method for determining fiber absorb asphalt capacity in dense-graded asphalt mixture, and how does its viscosity influence the results?

Comments on the Quality of English Language

The paper contains grammatical errors and awkward phrasing. A careful proofreading and refinement of language are necessary for clarity and professionalism.

Author Response

Thank you for your comments.

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

coatings-2838250

 

Title: Research on Basalt Fiber Oil/Asphalt Absorption Performance and Test Methods suitable for Asphalt Mixture with Different Structures

 

 

The manuscript presents an intriguing exploration of the oil absorption capacity of basalt fibers in asphalt mixtures, with a focus on the morphology of the fibers and the choice of testing methods. While the study addresses critical aspects such as the influence of fiber morphology on oil absorption rates and the appropriate testing methods for different asphalt structures, there are several areas that require major revision and clarification. The authors should provide more comprehensive explanations for the choice of kerosene as a medium in oil absorption tests, elaborate on the mechanisms behind the superior performance of filamentous basalt fibers (FBF), and offer a more detailed rationale for the selection of specific test methods. Additionally, the manuscript lacks a coherent and concise summary of key findings and their practical implications for the use of basalt fibers in asphalt mixtures. Overall, the manuscript has potential, but substantial revisions are needed to enhance clarity, provide deeper insights into the experimental choices, and present a more cohesive conclusion that highlights the practical significance of the study's findings in the context of road construction and pavement service life improvement.

Comments:

1. Line 15: Considering the critical role of oil/asphalt absorption in road performance, how does the choice of kerosene as a medium for oil absorption tests accurately reflect the conditions experienced by basalt fibers in asphalt mixtures? The rationale behind selecting kerosene as the medium for oil absorption tests should be justified, considering its relevance to the actual working conditions of basalt fibers in asphalt mixtures.
2. Line 20: In comparing filamentous basalt fiber (FBF) and bundled basalt fiber (BBF), can you elaborate on the mechanisms that make FBF more suitable for uniform dispersion in asphalt, and how does this impact its oil absorption capacity? Understanding the factors influencing the dispersion of FBF in asphalt will provide valuable insights into its superior performance compared to BBF.
3. Line 32: How does the inability of kerosene to reflect the ability of fiber to adsorb asphalt at higher temperatures (>180℃) impact the overall assessment of basalt fiber's performance in asphalt mixtures? Clarify the implications of the temperature limitation of kerosene in characterizing the adsorption capacity of fibers.
4. Line 110: What specific properties of bundled basalt fiber (BBF) make it an appropriate choice for the study, and how do these properties influence its oil absorption characteristics? Provide details on the key properties of BBF that make it a relevant material for this study.
5. Line 118: Can you elaborate on the rationale behind the preparation process for filamentous basalt fibers (FBF) and how this process simulates the real dispersion state of basalt fibers in asphalt mixtures? A detailed explanation of the preparation process will enhance the understanding of how FBF mimics real-world conditions.
6. Line 129: Considering lignin fiber (LF) as a comparative material, how does its chemical stability and water absorption properties affect its oil absorption capacity in comparison to basalt fibers? Provide insights into the unique characteristics of LF and how they contribute to its oil absorption behavior.
7. Line 140: Explain the rationale behind choosing vibration, extrusion, and centrifugation methods for determining fiber oil absorption rate and how these methods capture different stress states of fibers in asphalt mixtures. Discuss the reasons for selecting each test method and their relevance to different stress states.
8. Line 155: What is the significance of studying the difference in fiber adsorption capacity for SBS modified asphalt at different test temperatures, and how does it impact the understanding of fiber performance in varying environmental conditions? Provide insights into the importance of temperature variation in assessing fiber adsorption capacity.
9. Line 262: Elaborate on the observed difference in K values for two fiber asphalt mixtures and its impact on adjusting the gradation to meet the porosity index. How does this relate to the overall performance of basalt fiber asphalt mixtures? Clarify the implications of the observed difference in K values on the practical application of basalt fiber asphalt mixtures.
10. Line 268: Discuss the rationale for using a combination of extrusion and centrifugation methods to determine the fiber oil absorption rate for dense-graded asphalt mixtures and how this choice aligns with the expected stress states of fibers in this structure. Explain why the combination of extrusion and centrifugation methods is appropriate for dense-graded asphalt mixtures.
11. Line 284: How does the research on the test method of fiber absorb asphalt contribute to understanding the practical application of basalt fiber in asphalt mixtures? Provide insights into the practical implications of the research on fiber absorb asphalt test methods.
12. Line 296: Explain the observed decrease in fiber asphalt absorption rate with an increase in temperature. How does this information contribute to the understanding of fiber performance in varying temperature conditions? Clarify the relationship between temperature and fiber asphalt absorption rate.
13. Line 319: Discuss the limited impact of basalt fiber incorporation on oil-stone ratio in dense-graded asphalt mixtures. How does the pressure experienced by fibers in this structure contribute to this observation? Elaborate on the reasons for the limited impact of basalt fiber on oil-stone ratio in dense-graded asphalt mixtures.
14. Line 328: Explore the reasons behind suggesting the use of kerosene instead of asphalt for the determination of fiber absorb asphalt capacity in dense-graded asphalt mixtures. How does this choice affect the accuracy of measurements? Provide rationale for choosing kerosene over asphalt in the extrusion method for dense-graded asphalt mixtures.
15. Line 330: How does the apparent viscosity of SBS modified asphalt at various temperatures influence the results of the fiber asphalt absorption rate test, and what are the implications for the accuracy of measurements? Discuss the relationship between apparent viscosity and the accuracy of fiber asphalt absorption rate measurements.
16. Line 335: Explain the observed proportional relationship between fiber asphalt adsorption capacity and asphalt viscosity. How does this relationship impact the overall assessment of fiber performance in asphalt mixtures? Clarify the significance of the proportional relationship between fiber asphalt adsorption capacity and asphalt viscosity.
17. Line 348: Discuss the ability of kerosene to indirectly evaluate the ability of fiber to absorb asphalt. How does this indirect evaluation align with the practical application of fibers in asphalt mixtures? Elaborate on the practical implications of using kerosene as an indirect evaluator of fiber's ability to absorb asphalt.
18. Line 354: Summarize the key conclusions and their implications for the practical use of basalt fibers in asphalt mixtures. How do these findings contribute to improving road performance and prolonging pavement service life? Provide a concise summary of the main conclusions and their practical implications for the field of road construction.

Comments on the Quality of English Language

 Minor editing of English language required. 

Author Response

Thank you for your comments.

Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

Keywords the first one is too general, the last one too specific

The first two sentences are of a general nature and there is no need to cite the literature, as many as seven literature sources that deal with specific research are recorded

all references 1-13 must be cited after the third sentence. But 13 sources are too many, just pick a few

Table 1: What "After RTFOT" means?

Lines 243-254: Here is a description of the calculation method, it should be under research methods.

Author Response

Thank you for your comments.

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

The revised version of the paper meets the criteria for acceptance. 

Reviewer 2 Report

Comments and Suggestions for Authors

the revised manuscript can be accepted. 

Comments on the Quality of English Language

Minor editing of English language required.