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Article
Peer-Review Record

Experimental Study on Stiffness Degradation of Organic Matter-Disseminated Sand under Cyclic Loading

Sustainability 2022, 14(18), 11793; https://doi.org/10.3390/su141811793
by Juan Du 1,2,*, Xingfei Jiang 1, Bingyang Liu 3, Lin Jia 4 and Yang Zhang 1,*
Reviewer 1:
Reviewer 2: Anonymous
Reviewer 3:
Sustainability 2022, 14(18), 11793; https://doi.org/10.3390/su141811793
Submission received: 25 June 2022 / Revised: 13 September 2022 / Accepted: 16 September 2022 / Published: 19 September 2022

Round 1

Reviewer 1 Report

Experimental Study on Stiffness Degradation of Organic Matter-Disseminated Sand under Cyclic Loading

This paper presents an interesting subject related to evaluate the effect of cyclic loading on the stiffness Degradation of Organic Matter-Disseminated Sand (OMDS) throughout a comprehanssive experimental programme then analysis the measured data to derive an empirical formula reflecting the rule of soil stiffness softening. The paper is well written and followed the logical sequence with clear methodology. The results obtained were worthwhile and have practical advantages.

 

Author Response

Thanks for the reviewers’ comments.

Author Response File: Author Response.pdf

Reviewer 2 Report

This manuscript investigated the stiffness degradation of organic matter disseminated sand (OMDS) under cyclic loading situations. The OMDS samples were artificially prepared with different moisture content and consolidation ratio. Stiffness degradation behavior was studied under different cyclic load mode and time. Overall, the manuscript was well prepared. I recommend to accept it after minor revisions. The detailed concerns are listed below.

(1) A schematic drawing is recommended to show the cyclic load modes and the sample setup in testing.

(2) Did the authors measure the stiffness degradation properties of the original OMDS with 12.23% moisture content? Manipulated moisture may have different adsorption status in OMDS.

(3) The degradation model of OMDS was achieved by regression analysis. It surely fit the experimental data well. In addition, models in reference are not specifically for OMDS and therefore it doesn’t fit the experimental data well. In summary, it is not meaningful to compare the regression model with other models in the references.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 3 Report

The authors studied the degradation of OMDS subjected to different cyclic loading cases. The following remarks were obtained.

1- Some of curves should have shorter horizontal axis. It's better to end the figures at the final points of measurements.

2- The authors didn't make any interpretation to the difference between the effects of type of cyclic wave. Why rectangular wave has the highest degradation index?

3- The authors should study the error percentage between the experimental and the different fitting models in a table.

4- The conclusion should present the scientific interpretation of the obtained results. For example, Why the moisture content and other parameters will accelerate the degradation?

After completing the previous comments, the manuscript could be reconsidered.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 3 Report

The authors have completed all comments and the manuscript may be accepted in its current form.

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