Study on the Effect and Mechanism of Alkali–Silica Reaction Expansion in Glass Concrete
Round 1
Reviewer 1 Report
The aim of this paper is of interest but authors should be improve some aspect:
Introduction. The authors would be well advised to go more deeply into the bibliography individually, as the way it is displayed, relevant information for the reader may be lost. The number of references is rather poor. A research article should have around 40 to verify that a thorough study of the current state of the art has been carried out.
Experiment. I would recommend the authors to rename the section to Materials and Methods to follow the editorial line of the journal. Some metrics are missing that could complete the work more, such as the water-cement ratio.
Results and analysis. The authors have made a correct evaluation of the results obtained.
Conclusions. The conclusions are somewhat poor. I would recommend the authors to go into more depth and to record the possible implications that their study could have for the feasibility of its application.
References. The number of references should be increased.
Author Response
Responses to the Reviewers’ comments
We sincerely appreciate the editor and the reviewers for your comments concerning our manuscript entitled “Study on the Effect and Mechanism of Alkali-Silica Reaction Expansion in Glass Concrete” (ID: 1277071). We have examined all the comments and addressed your concerns in the revised manuscript carefully. And the additions have been marked in red in the revised manuscript.
Any question, please contact me by email address. Thank you again for your kind help. I am looking forward to hearing from you soon.
Yours sincerely,
Prof. Dr. Yuanhao Wang
School of Civil and Architecture Engineering
Guilin University of Technology
No. 12, Jiangan road, Guilin 541004, Guangxi, China
E-mail: [email protected]
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Dear authors
I attach a pdf with many comments. Please in case of resubmission provide your comments on this same file.
Kind regards
Comments for author File: Comments.pdf
Author Response
Responses to the Reviewers’ comments
We sincerely appreciate the editor and the reviewers for your comments concerning our manuscript entitled “Study on the Effect and Mechanism of Alkali-Silica Reaction Expansion in Glass Concrete” (ID: 1277071). We have examined all the comments and addressed your concerns in the revised manuscript carefully. And the additions have been marked in red in the revised manuscript.
Any question, please contact me by email address. Thank you again for your kind help. I am looking forward to hearing from you soon.
Yours sincerely,
Prof. Dr. Yuanhao Wang
School of Civil and Architecture Engineering
Guilin University of Technology
No. 12, Jiangan road, Guilin 541004, Guangxi, China
E-mail: [email protected]
Author Response File: Author Response.pdf
Reviewer 3 Report
1. Chemical compositions for three different sizes of glass sand are needed. In Section 3.3, analysis of the expansion mechanism of glass concrete ASR was explained from lines 177-190. And Authors argued that when the glass sand with a larger particle size is mixed into the concrete as a fine aggregate, ASR occurs with OH-, K+ and Na+ ...
2.Because the ASR expansion % of GP8, GP9 mixes at 14 days are marginally greater than 0.1%, it is not good to explicitly express in Conclusions as wee as in Abstracts, (1) Glass powder with a cement of 20% and a particle size of 75um or less can effectively inhibit ASR expansion.
3. In Fig.4, for GP2, GP5, GP8 images, with the increase of glass sand content, authors need to show that the overall structure is loose and is made of many voids, as explained for the control specimens in Section 3.2.
4. From lines 176 to the end, as argued in question 1, chemical compositions for three different sizes of glass sand may be needed to verify authors’ theory.
5. In 2.2, lines 92-93, the ASR expansion % was measured at different ages (0d, 5d, 9d, 14d, 28d), however this paper shows only at 14 days. all data may be included in this paper.
6. Error bars are needed in Fig. 2.
7. For a main conclusion or recommendation from this ASR expansion test, at least compressive strength data for all the mixes may be needed. As a reader, I wonder whether as the glass powder increases in the mix with the addition of glass sand, the ASR expansion rate may be o.k., but what if the compressive strength values are decreased. Or if those data is published in other paper, please cite that reference and explain briefly here.
Author Response
Responses to the Reviewers’ comments
We sincerely appreciate the editor and the reviewers for your comments concerning our manuscript entitled “Study on the Effect and Mechanism of Alkali-Silica Reaction Expansion in Glass Concrete” (ID: 1277071). We have examined all the comments and addressed your concerns in the revised manuscript carefully. And the additions have been marked in red in the revised manuscript.
Any question, please contact me by email address. Thank you again for your kind help. I am looking forward to hearing from you soon.
Yours sincerely,
Prof. Dr. Yuanhao Wang
School of Civil and Architecture Engineering
Guilin University of Technology
No. 12, Jiangan road, Guilin 541004, Guangxi, China
E-mail: [email protected]
Reviewer 4 Report
This paper is reported the reaction mechanism of ASR expansion in Glass Concrete. The work presented here is interesting, however, few improvements are required prior to publish in this journal. Specific comments are:
- Authors need to improve introduction section while adding previous research findings related to this topic and then can emphasis the new knowledge/research gap addressing by this paper. Present format is weaker lack of highlighting gap in knowledge information.
- Microstructural images need to be more informative, so improve images adding details.
- Why adding glass increase ASR expansion? Need to explain very clearly.
- Conclusion section seems summary of whole manuscript while mixing with methodology, results and key findings of this study. Not well structured. Some key findings were missed in reporting so suggest re-focusing this section to improve while mentioning key scientific ideas briefly and concisely in point form.
Author Response
Responses to the Reviewers’ comments
We sincerely appreciate the editor and the reviewers for your comments concerning our manuscript entitled “Study on the Effect and Mechanism of Alkali-Silica Reaction Expansion in Glass Concrete” (ID: 1277071). We have examined all the comments and addressed your concerns in the revised manuscript carefully. And the additions have been marked in red in the revised manuscript.
Any question, please contact me by email address. Thank you again for your kind help. I am looking forward to hearing from you soon.
Yours sincerely,
Prof. Dr. Yuanhao Wang
School of Civil and Architecture Engineering
Guilin University of Technology
No. 12, Jiangan road, Guilin 541004, Guangxi, China
E-mail: [email protected]
Author Response File: Author Response.pdf
Round 2
Reviewer 2 Report
Dear authors I don't see addressed in the manuscript the comments from the first review, despite the fact that in your responses you claim that you did changes. I value my time very much, which is why after reaching half of your new version I stop the review.
If you send it again address all comments or I just won't read it.
Comments for author File: Comments.pdf
Author Response
We have responded in the PDF version. And the corresponding changes have been made in the article.
Author Response File: Author Response.pdf
Reviewer 3 Report
I wonder the authors look through my reviewing comments question by question.
Author Response
Responses to the Reviewers’ comments
We sincerely appreciate the editor and the reviewers for your comments concerning our manuscript entitled “Study on the Effect and Mechanism of Alkali-Silica Reaction Expansion in Glass Concrete” (ID: 1277071). We have examined all the comments and addressed your concerns in the revised manuscript carefully. You will find our point-by-point responses to all the comments in blue below and the additions have been marked in red in the revised manuscript.
Any question, please contact me by email address. Thank you again for your kind help. I am looking forward to hearing from you soon.
To the comments by Reviewer 3:
- Chemical compositions for three different sizes of glass sand are needed. In Section 3.3, analysis of the expansion mechanism of glass concrete ASR was explained from lines 177-190. And Authors argued that when the glass sand with a larger particle size is mixed into the concrete as a fine aggregate, ASR occurs with OH-, K+ and Na+ ...
Answer: Thank you very much for your comments. I believe that after you read the article carefully again, you will find that the chemical composition of three different sizes of glass sand has been listed in Table 1. According to the different grinding, the glass can be divided into three sizes (0～13 μm, 13～38 μm and 38～75 μm), but the chemical composition of the three kinds of glass is the same, but the size is different. In addition, we have restated the mechanism in the article: The inhibition mechanism of glass powder on ASR expansion may be due to the potential pozzolanic property of ground glass powder. When glass powder is mixed into concrete as an auxiliary cementitious material, SiO2 in glass powder is more involved in pozzolanic reaction, which consumes OH-, in solution and reduces ASR rate, thus reducing the formation of ASR gel and inhibiting ASR expansion.
2.Because the ASR expansion % of GP8, GP9 mixes at 14 days are marginally greater than 0.1%, it is not good to explicitly express in Conclusions as wee as in Abstracts, (1) Glass powder with a cement of 20% and a particle size of 75 μm or less can effectively inhibit ASR expansion.
Answer: Thank you very much for your comments. We have revised it in the article. I hope you will accept it.
- In Fig.4, for GP2, GP5, GP8 images, with the increase of glass sand content, authors need to show that the overall structure is loose and is made of many voids, as explained for the control specimens in Section 3.2.
Answer: Thank you very much for your comments. Through the comparison, it is not difficult to find that with the increase of the amount of glass powder, the loose structure and "paper-like" ASR gel gradually decreases, and the microstructure of the mortar rod becomes denser and denser, indicating that the reaction products are more C-S-H gel. It further validates the inference in the above experiments that "the increase of glass powder content will enhance the inhibitory effect on ASR expansion".
- From lines 176 to the end, as argued in question 1, chemical compositions for three different sizes of glass sand may be needed to verify authors’ theory.
Answer: Thank you very much for your comments. Like the answer to the first question, the chemical composition of three different sizes of glass sand is listed in Table 1.
- In 2.2, lines 92-93, the ASR expansion % was measured at different ages (0d, 5d, 9d, 14d, 28d), however this paper shows only at 14 days. all data may be included in this paper.
Answer: Thank you very much for your comments. According to ASTM C1260-01 "Standard Test Method for Alkali Potential Reactivity of Aggregate-Mortar Stick Method" and TB /T2922.5-2002 "Rapid Mortar Rod Method for Alkaline Reactivity Test Method of Aggregate for Railway Concrete", When the swelling rate of the mortar rod 14 d is greater than the standard value of 0.1%, the tested fine aggregate has potential ASR hazards. While the expansion rate of the reference group specimens at 14 days is 0.124%, which is greater than the standard requirement that the expansion rate is lower than 0.1% at 14 days as required by the specification. This indicates that the river sand produced locally in Guilin has potential ASR hazards. Therefore, the 14-day test is representative.
- Error bars are needed in Fig. 2.
Answer: Thank you very much for your comments. This value is the graph drawn by the average value obtained after three tests at that time, so we did not add error lines when drawing. Because there is no similar literature.
- For a main conclusion or recommendation from this ASR expansion test, at least compressive strength data for all the mixes may be needed. As a reader, I wonder whether as the glass powder increases in the mix with the addition of glass sand, the ASR expansion rate may be o.k., but what if the compressive strength values are decreased. Or if those data is published in other paper, please cite that reference and explain briefly here.
Answer: Thank you very much for your suggestion. This question is very interesting and I would like to study it further in the next experiment. At present, there is no similar research in the literature, which is worthy of further study. Thank you very much for your advice.
Author Response File: Author Response.pdf
Round 3
Reviewer 2 Report
please, as before, in case of resubmission add your responses on the same attached pdf.
As general comment, improve your writing. The article is difficult and frustrating to read. if I receive a new review with the same quality I will unfortunately recommend its rejection.
Comments for author File: Comments.pdf
Author Response
We have added a reply to the pdf of the same attachment, and the changes can be found in the manuscript.
Author Response File: Author Response.pdf
Reviewer 3 Report
Questions 2, since 0.1% increase is meaningless, I asked not to explictly express in Conclusions and Abstracts. Authors agreed to, but they did not changed it.
Question 3, in Fig. 2, I asked to include error bars in the graph. It provides scattered experimental statistics or variations.
Author Response
We sincerely appreciate the editor and the reviewers for your comments concerning our manuscript entitled “Study on the Effect and Mechanism of Alkali-Silica Reaction Expansion in Glass Concrete” (ID: 1277071). We have examined all the comments and addressed your concerns in the revised manuscript carefully. You will find our point-by-point responses to all the comments in blue below and the additions have been marked in red in the revised manuscript.
Any question, please contact me by email address. Thank you again for your kind help. I am looking forward to hearing from you soon.
Author Response File: Author Response.pdf
Round 4
Reviewer 3 Report
O.k.
Author Response
We sincerely appreciate the editor and the reviewers for your comments concerning our manuscript entitled “Study on the Effect and Mechanism of Alkali-Silica Reaction Expansion in Glass Concrete” (ID: 1277071). We have perfected the article again, and the changes have been marked in red. I hope it's acceptable.
Any question, please contact me by email address. Thank you again for your kind help. I am looking forward to hearing from you soon.
This manuscript is a resubmission of an earlier submission. The following is a list of the peer review reports and author responses from that submission.
