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Cementitious Grouts for Semi-Flexible Pavement Surfaces-A Review
Muhammad Imran Khan1,2, Muslich Hartadi Sutanto2, Nur Izzi Md Yusoff3
1Department of Transportation & Geotechnical Engineering, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan.
Materials (Basel, Switzerland)
|August 12, 2022
Summary
Semi-flexible pavements offer advantages over traditional types. This review details how cementitious grout composition impacts their performance, offering recommendations for optimal design.
Area of Science:
- Civil Engineering
- Materials Science
Background:
- Semi-flexible pavement, or grouted macadam, is a hybrid pavement type gaining traction globally.
- It combines an open-graded asphalt mixture with cementitious grout, offering benefits over rigid and conventional flexible pavements.
Purpose of the Study:
- To comprehensively review cementitious grouts used in semi-flexible pavement layers.
- To analyze the impact of grout composition on the performance of these hybrid pavement systems.
Main Methods:
- Literature review of laboratory and field experiments on semi-flexible pavement performance.
- Analysis of various cementitious grout compositions, including water/cement ratio, superplasticizers, polymers, and admixtures.
- Discussion on the influence of byproducts and additives on grout mechanical properties.
Main Results:
- Grout composition significantly affects the performance of both the grout and the semi-flexible mixture.
- Byproducts and additives can alter the mechanical properties of the cementitious grouts.
Conclusions:
- The study provides a summary of current research on cementitious grouts for semi-flexible pavements.
- Recommendations for optimal cementitious grout compositions are suggested based on the reviewed literature.
Keywords:
cementitious groutgrouted macadamgrouting abilityporous asphalt mixturesemi-flexible pavementMore Related Videos
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