Damage Model and Experimental Study of a Sand Grouting-Reinforced Body under Seepage

Round 1

Reviewer 1 Report

The topic is very interesting however a number of comments should be addressed:  1- the language is very poor and will require significant review and preferable to be through a professional body. 2- Microscopic analysis or SEM will improve the analysis and its trustability.  2- What are the standards or specifications that are used in each test? Are they mentioned in the references?  3- Both the conclusion and abstract sections shall highlight the practical finding from the analysis and how it can help the industry? 4- List of references are to be updated considering the specifications, case studies if available, practical applications. 

Author Response

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Reviewer 2 Report

Review on Damage Model and Experimental Study of a Sand Grouting-2 Reinforced Body under seepage

 

Research on the permeation pressure, duration, and damage variables in grouting-reinforced body damage is critical to maintaining extended tunnel life safety. This paper uses primitive to describe the mechanical properties of grouting-reinforced body under seepage erosion. The damage mechanical model of grouting-reinforced body under seepage is established by designing deterioration experimental of grouting-reinforced body under seepage and obtaining the variable of the grouting-reinforced body damage variable with the permeation water pressure. The relationship between the permeability and damage variables of grouting-reinforced body under seepage are also studied in this paper.

 

Positive Points of the Study

• Based on the effective stress and damage mechanics, using the description of the mechanical properties of grouting-reinforced body under the action of seepage erosion by the primitive body, a mechanical model of grouting-reinforced body damage under the action of seepage is established.
• Based on the relationship between the permeability of the medium and the damage variable, the test model is designed to verify the relationship between the grouting reinforced body permeability and the damage variable under the action of seepage.
• It can be seen from the figure 7 that the damage variable caused by the deterioration of the grouting-reinforced body caused by the seepage effect increases with time.

 

Areas for Improvement

• The quantitative relationship between grouting-reinforced body osmotic pressure, time, and damage variables might have determined using the proposed mechanical model for grouting-reinforced body damage under the action of seepage.
• The influence of micro-crack pores on the grouting-reinforced body porosity needs to address in more detail.

• The reader may face difficulty in understanding because there are logical connections between topics that are not always evident in the text.

 

Author Response

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Reviewer 3 Report

The paper highlights practical problem of seepage of grouts in underground engineering structures. The developed model considers non-uniformity nature of sand layers.

The study establishes a very good model based on the effective stress and damage mechanics, using the description of mechanical properties of grouting-reinforced body under the action of seepage erosion by the primitive body, a mechanical model of grouting-reinforced body damage under the action of seepage.

The findings of the study are very well articulated along with the experimentation carried out. However, conclusion # 2 need slight modification to make it more meaningful statement. 

Author Response

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Round 2

Reviewer 1 Report

The modifications have been limited to one sentence added to the conclusion, one additional citation and removing one paragraph.  

No significant review was noticed. 

Language still requires sufficient review. 

Author Response

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