Bio-carbonated or pre-bio-carbonated reactive magnesium cement method for rapid pavement repair.
Saved in:
| Title: | Bio-carbonated or pre-bio-carbonated reactive magnesium cement method for rapid pavement repair. |
|---|---|
| Authors: | Cui, Hui-Yue1,2 (AUTHOR), He, Xiang2 (AUTHOR), Chu, Jian2 (AUTHOR) cjchu@ntu.edu.sg, Dong, Zhi-Li3 (AUTHOR), Lam, Kok-Pang4 (AUTHOR) |
| Source: | Acta Geotechnica. Jun2025, Vol. 20 Issue 6, p2999-3010. 12p. |
| Subjects: | Ultrasonic testing, Civil engineering, Pavement maintenance & repair, Road maintenance, Portland cement |
| Abstract: | When cement or similar binders are used for road repair, it takes a relatively long time to gain strength. A new method using bio-carbonated reactive magnesium cement (RMC) grout or pre-bio-carbonated RMC grout for rapid pavement repair or stabilization is proposed in this paper. To evaluate the effectiveness of the proposed method, five model tests were carried out by injecting bio-carbonated RMC grout at 5 different liquid-to-binder ratios into base or subbase materials. Two other model tests were also conducted using the pre-bio-carbonated RMC grout and ordinary Portland cement, respectively. After grouting, the change in the properties of the grouted base was assessed through temperature and ultrasonic pulse velocity changes. Plate load tests were also carried out 24 h after the treatment to assess the performances of the treatments. The model test results showed that the liquid-to-binder ratio had a great effect on the flowability of bio-carbonated RMC and the optimal liquid-to-binder ratio for bio-carbonated RMC grouting was between 6 and 8, within which the filling rate could be maintained uniform, and the pavement treated gain a relatively high strength in the failure load range of 1.6–3.1 kN. Compared with the treatment using bio-carbonated RMC, the treatment using the pre-bio-carbonation RMC method could accelerate the setting time and reduce the treatment time from 13 to 3 h and it also increased the failure load by 2.4 times and the reaction modulus of the pavement by 2.6 times. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Geotechnica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | When cement or similar binders are used for road repair, it takes a relatively long time to gain strength. A new method using bio-carbonated reactive magnesium cement (RMC) grout or pre-bio-carbonated RMC grout for rapid pavement repair or stabilization is proposed in this paper. To evaluate the effectiveness of the proposed method, five model tests were carried out by injecting bio-carbonated RMC grout at 5 different liquid-to-binder ratios into base or subbase materials. Two other model tests were also conducted using the pre-bio-carbonated RMC grout and ordinary Portland cement, respectively. After grouting, the change in the properties of the grouted base was assessed through temperature and ultrasonic pulse velocity changes. Plate load tests were also carried out 24 h after the treatment to assess the performances of the treatments. The model test results showed that the liquid-to-binder ratio had a great effect on the flowability of bio-carbonated RMC and the optimal liquid-to-binder ratio for bio-carbonated RMC grouting was between 6 and 8, within which the filling rate could be maintained uniform, and the pavement treated gain a relatively high strength in the failure load range of 1.6–3.1 kN. Compared with the treatment using bio-carbonated RMC, the treatment using the pre-bio-carbonation RMC method could accelerate the setting time and reduce the treatment time from 13 to 3 h and it also increased the failure load by 2.4 times and the reaction modulus of the pavement by 2.6 times. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 18611125 |
| DOI: | 10.1007/s11440-024-02529-z |
