![]() ![]() This review highlights the shift towards sustainable stabilisation of unsealed roads without considerable impact to current pavement practices, but at the effect of a sound understanding of stabilisation approaches and long-term performance data. Performance aspects of each technique are discussed to describe the benefits, limitations and suitability of soil stabilisers in unsealed roads. These techniques are reviewed and discussed to provide a critical overview of the stabilisation mechanisms, properties, performance and durability. ![]() The literature is categorized based on non-chemical and chemical additive techniques, covering mechanical stabilisation, chemical additives, alternative cementitious additives and bituminous additives used in unsealed road construction. This paper covers a comprehensive up to date literature review of various techniques for improving unsealed roads durability. Research studies have shown that the targeted application of additives and specific techniques to unsealed pavements can improve the engineering and geotechnical properties of the pavement structure. Given low traffic volumes, economic considerations cannot justify higher class paved roads and, as a result, are prone to distress in the form of surface and structural defects. ![]() Unsealed roads are still the backbone for many countries’ growth and development with many kilometres of road unpaved globally.
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