Manufacturing of Low-Carbon Binders Using Waste Glass and Dredged Sediments: Formulation and Performance Assessment at Laboratory Scale
, Walid Maherzi 1,2, Mahfoud Benzerzour 1,2, Yannick Mamindy-Pajany 1,2, Arne Peys 3 and Nor-Edine Abriak 1,2Round 1
Reviewer 1 Report
- Lines 135 – 136 “…values were measure dafter stabilization.” Please correct.
2. Line 180: Replace the “Table 1. Chemical composition of DS, RWG, and MK (measured by XRF, values in wt%).” with “Table 1. Chemical composition of DS, RWG and MK (measured by XRF, values in wt %).”
In the “Table 1. Chemical composition of DS, RWG and MK (measured by XRF, values in wt %)”, please include the following information: 1. detection limit for each compound; 2. error for each compound; 3. standard deviation of the results presented.
3. Insert a Table with “Elemental chemical composition of DS, RWG and MK”. Please include the following information: 1. detection limit for each element; 2. error for each element; 3. standard deviation of the results.
4. Line 253: Replace the “Figure 5. Evolution of phase composition at different temperatures of calcination given by XRD Analysis” with “Figure 5. Evolution of phase composition at different temperatures of calcinations given by XRD Analysis”. In the legend, please replace ”F:feldspars” with “F:feldspath”.
5. Lines 137-142: “Mortar specimens were leached to evaluate the mobility of MMTE after filtering. The leachates were measured with an inductively coupled plasma atomic emission spectrometer (ICP-AES) with an Agilent Technologies SPS4 Autosampler. Compressive strength were measured on 4×4×16cm³ prisms in accordance with the standard [24] after 1, 7, and 28 days at 60 °C. A 15 ton INSTRON press was used with a load speed of144kN/min.
Line 394 “Figure 13. Compressive strength of mortars at 7 days of curing at 60°C.”
Insert a Figure with “Compressive strength of mortars at 1, 7 and 28 days”.
6. Line 431 “Table 5. Environmental leaching test results” – Hg missing.
In the Table 5, please insert a column with the allowed limits for each element.
Comments for author File: 
Comments.pdf
Author Response
Dear reviewer,
We thank you for your valuable input. In the table below, you will find our strategy to improve the paper based on your comments. The comments are repeated on the left and our reply is added on the right.
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1 |
Lines 135 – 136 “…values were measure dafter stabilization.” Please correct. |
The correction has been realized. Please see lines 139-141. |
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2 |
2. Line 180: Replace the “Table 1. Chemical composition of DS, RWG, and MK (measured by XRF, values in wt%).” with “Table 1. Chemical composition of DS, RWG and MK (measured by XRF, values in wt %).”
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The replacement has been realized. Please see line 193. |
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In the “Table 1. Chemical composition of DS, RWG and MK (measured by XRF, values in wt %)”, please include the following information: 1. detection limit for each compound; 2. error for each compound; 3. standard deviation of the results presented. |
The elemental chemical composition is measured by Standardless Quantitative Analysis. |
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Insert a Table with “Elemental chemical composition of DS, RWG and MK”. Please include the following information: 1. detection limit for each element; 2. error for each element; 3. standard deviation of the results. |
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Line 253: Replace the “Figure 5. Evolution of phase composition at different temperatures of calcination given by XRD Analysis” with “Figure 5. Evolution of phase composition at different temperatures of calcinations given by XRD Analysis”. In the legend, please replace ”F:feldspars” with “F:feldspath”. |
The correction has been realised. Please see lines 265-267. |
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Lines 137-142: “Mortar specimens were leached to evaluate the mobility of MMTE after filtering. The leachates were measured with an inductively coupled plasma atomic emission spectrometer (ICP-AES) with an Agilent Technologies SPS4 Autosampler. Compressive strength were measured on 4×4×16cm³ prisms in accordance with the standard [24] after 1, 7, and 28 days at 60 °C. A 15 ton INSTRON press was used with a load speed of 144kN/min Line 394 “Figure 13. Compressive strength of mortars at 7 days of curing at 60°C.”Insert a Figure with “Compressive strength of mortars at 1, 7 and 28 days”.
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The correction has been realized, the compressive strength of mortars are realized at 7 days / 60°C. The properties are around 95% at this condition cure and for same activator [1]. Please see lines 141-147. |
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6. Line 431 “Table 5. Environmental leaching test results” – Hg missing. |
The equipment required for this analysis in our laboratory is not specifically adapted for Hg. |
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In the Table 5, please insert a column with the allowed limits for each element |
The Detection Limit (DL) for the ICP-AES has been added for each element (DL in mg/kg). Please see line 454. |
Author Response File: Author Response.pdf
Reviewer 2 Report
Great job. The article was written very professionally and to the point. It is difficult to point to any shortcomings or oversights. The topic of the use of waste (sand and waste from the production of water glass) is very timely and of great value. The number of research / analyzes carried out is very large and the comments and conclusions are comprehensive and accurate.
I cannot criticize any part of this article. I could only list the positive qualities and that is not the purpose of the review. I have been working on geopolymers and alkaline activated materials for over 10 years and for me this publication is very interesting.
Author Response
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Reviewer 2 |
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Great job. The article was written very professionally and to the point. It is difficult to point to any shortcomings or oversights. The topic of the use of waste (sand and waste from the production of water glass) is very timely and of great value. The number of research / analyzes carried out is very large and the comments and conclusions are comprehensive and accurate.
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Thank you very much for your Encouragement. |
Author Response File: Author Response.pdf
Reviewer 3 Report
Formulas can be rearranged to make easier to follow (line 227)
Table 1 and Table 2 can be separated and info about table 2 can be written after table 1 followed by table 2.
Author Response
Dear reviewer,
We thank you for your valuable input. In the table below, you will find our strategy to improve the paper based on your comments. The comments are repeated on the left and our reply is added on the right.
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1 |
Formulas can be rearranged to make easier to follow (line 227) |
Formulas have been rearranged. Please see lines 234-239. |
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2 |
Table 1 and Table 2 can be separated and info about table 2 can be written after table 1 followed by table 2. |
The separation and the rearrangement have been realized. Please see lines 179-194. |
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
- Insert a Table with “Elemental chemical composition of DS, RWG and MK”.
- Line 406: “Figure 13. Compressive strength of mortars at 7 days of curing at 60°C.”Insert a Figure with “Compressive strength of mortars at 1, 7 and 28 days”.
- Line 449: “Table 5. Environmental leaching test results” – Hg missing.
- Line 559: [25] NF EN 196-1, Methods of testing cement - Part 1: Determination of strength, 2005. - Is the standard NF EN 196-1:2005 in force?
Author Response
Dear reviewer,
We thank you for your valuable input. In the table below, you will find our strategy to improve the paper based on your comments. The comments are repeated on the left and our reply is added on the right.
|
1 |
Insert a Table with “Elemental chemical composition of DS, RWG and MK”. |
The chemical composition of DS, RWG and MK has presented in table 2. Please see line 195 (Table 2) |
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2 |
Line 406: “Figure 13. Compressive strength of mortars at 7 days of curing at 60°C.”Insert a Figure with “Compressive strength of mortars at 1, 7 and 28 days
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In a previous study, Bouchicki et al. [1] have shown that the mechanical strengths of mortars do not change or shortly after 7 days of cure at 60 ° C. Please see lines 141-147. |
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Table 5. Environmental leaching test results” -Hg missing. |
The leaching result obtained for Hg has been added in table 5. Please see Table 5 |
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Line 559: [25] NF EN 196-1, Methods of testing cement - Part 1: Determination of strength, 2005. - Is the standard NF EN 196-1:2005 in force?
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This standard method applied in Europe to determine the compressive strength of mortars. The reference has been rectified by “standard NF EN 196-1:2016”. Please see line 570 [25]. |
[1] A. Bouchikhi, Y. Mamindy-Pajany, W. Maherzi, C. Albert-Mercier, H. El-Moueden, M. Benzerzour, A. Peys, N. Abriak, Use of residual waste glass in an alkali-activated binder – Structural characterization, environmental leaching behavior and comparison of reactivity, Journal of Building Engineering. (2020) 101903. doi:10.1016/j.jobe.2020.101903.
Author Response File: Author Response.pdf
Round 3
Reviewer 1 Report
- Insert a Table with “Chemical compositions for each chemical element of DS, RWG and MK”.
Table 2 (line 320) shows the chemical composition of DS, RWG and MK.
The chemical composition for each chemical element does not occur.
- Line 731: “Figure 13. Compressive strength of mortars at 7 days of curing at 60°C.” Please complete the Figure 13 with “Compressive strength of mortars at 1 and 28 days”.
Author Response
Dear colleague,
Thank you very much for your valuable input. In the table below, you will find our response and modifications to improve the paper based on your comments.
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1 |
Insert a Table with “Chemical compositions for each chemical element of DS, RWG and MK” |
The elemental chemical composition of DS, RWG and MK has added in table 2. Please see line Table 2. |
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2 |
Line 731: “Figure 13. Compressive strength of mortars at 7 days of curing at 60°C.” Please complete the Figure 13 with “Compressive strength of mortars at 1 and 28 days”. |
The compressive strength of mortars were realized only at 7 days / 60 ° C. In this conditions of cure, the compressive strength at 7 days are around 95% compared with the strenghts at 28 days (Bouchikhi et al [1]). Please see lines 141-148. In this study, the aim was to see the impact of the use of byproducts (DS, rwg) in geopolymer formulations. For this, the mechanical properties were measured at 7 days. |
[1] A. Bouchikhi, Y. Mamindy-Pajany, W. Maherzi, C. Albert-Mercier, H. El-Moueden, M. Benzerzour, A. Peys, N. Abriak, Use of residual waste glass in an alkali-activated binder – Structural characterization, environmental leaching behavior and comparison of reactivity, Journal of Building Engineering. (2020) 101903. doi:10.1016/j.jobe.2020.101903.
