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Year 2022, Volume: 18 Issue: 1, 1 - 9, 30.06.2022

Abstract

References

  • [1] Dong K., Gi-Joon P., Huy L., and Doyoung M., “Fresh and hardened properties of steel fiber-reinforced grouts containing ground granulated blast-furnace slag,” Construction and Building Materials, 122, 332-342, 2016.
  • [2] Shucai L., Fei S., Rentai L., Qingsong Z. and Zhaofeng L., “Investigation on fundamental properties of microfine cement and cement-slag grouts,” Construction and Building Materials, 153, 965-974, 2017.
  • [3] Doo-Yeol Y., Ryu, Gum-Sung Y., Tianfeng Y. and Kyung-Taek K., “Mitigating shrinkage cracking in post tensioning grout using shrinkage-reducing admixture,” Cement and Concrete Composites, 81, 97-108, 2017.
  • [4] Manisha V., K.B. A. and Dhanya S., “Effects of fillers on the properties of cement grouts,” Construction and Building Materials, 246, 118346, 2020.
  • [5] Ministry of Road Transport and Highways (Fifth revision), Indian Road Congress, 2013.

Evaluation of Fresh State and Mechanical Properties of Cementitious Grouts

Year 2022, Volume: 18 Issue: 1, 1 - 9, 30.06.2022

Abstract

Many construction activities, such as prestressed cable ducts (internal or external) for structural elements, masonry and RCC structure repair and reconstruction, shoring and soil stabilization, geotechnical applications, and so on, use cement grouting. These grouts comprise basic elements such as cement, sand if used, water and, possibly, admixture(s) along with non-shrink chemical admixtures. They exhibit higher compressive strength compared to other materials. Varying the mix proportions and dosages of the different additives used can easily change the rheology and characteristic properties of the grout. Grouting of cable ducts of prestressed structures to fill in the voids or gaps between the ducts and prestressing strands is a large-scale application of cement grouts. Damages such as corrosion and rupture of prestressing tendons/strands due to insufficient grouting and/or chloride attacks from airborne salts, use of de-icing salts, or use of sea sand in the concrete can cause these structures to deteriorate in strength and durability. In such situations, there is a possibility that this sea water or de-icing salt may penetrate into the ducts, thus corroding the prestressing strands/cables. The entire structure's tensile load carrying capacity is mainly dependent upon the tensile stress carrying capacity of cables/strands. As a result, the alkaline/passive layer, i.e. grout, must be thoroughly mixed and injected into the ducts in order for it to achieve the desired properties after hardening. Bleeding occurs when using pure cement grout, reducing the w/c ratio but increasing strength. As a result, admixtures such as Cebex 100, Cebex 200, and Cebex EN or equivalent will be added to the pure cement grout to improve its rheological properties such as bleeding, compressive strength, and durability properties such as shrinkage and permeability, and their properties will be investigated. Understanding the performance of cementitious grouts based on dosage and other additives at a major River Bridge Project in Goa is the goal of this research.

References

  • [1] Dong K., Gi-Joon P., Huy L., and Doyoung M., “Fresh and hardened properties of steel fiber-reinforced grouts containing ground granulated blast-furnace slag,” Construction and Building Materials, 122, 332-342, 2016.
  • [2] Shucai L., Fei S., Rentai L., Qingsong Z. and Zhaofeng L., “Investigation on fundamental properties of microfine cement and cement-slag grouts,” Construction and Building Materials, 153, 965-974, 2017.
  • [3] Doo-Yeol Y., Ryu, Gum-Sung Y., Tianfeng Y. and Kyung-Taek K., “Mitigating shrinkage cracking in post tensioning grout using shrinkage-reducing admixture,” Cement and Concrete Composites, 81, 97-108, 2017.
  • [4] Manisha V., K.B. A. and Dhanya S., “Effects of fillers on the properties of cement grouts,” Construction and Building Materials, 246, 118346, 2020.
  • [5] Ministry of Road Transport and Highways (Fifth revision), Indian Road Congress, 2013.
There are 5 citations in total.

Details

Primary Language English
Subjects Engineering
Journal Section Articles
Authors

Yogita Gaude 0000-0002-8054-6972

Publication Date June 30, 2022
Submission Date June 15, 2021
Published in Issue Year 2022 Volume: 18 Issue: 1

Cite

APA Gaude, Y. (2022). Evaluation of Fresh State and Mechanical Properties of Cementitious Grouts. Electronic Letters on Science and Engineering, 18(1), 1-9.