A novel type cold mix pavement material made with calcium-alginate and aggregates

Abstract

This paper has been prepared in the frame of a research focused on the development of Cold Mix pavement materials made with calcium-alginate Capsules (CMC) instead of with just bitumen emulsion, as it is normally made. The initial objective was to remove most of the water in cold mix asphalt by encapsulating bitumen droplets. The encapsulation method allowed the preparation of polynuclear capsules with bitumen emulsion encapsulated, which membrane was made of calcium-alginate. Capsules were mixed with aggregates at the ambient temperature. During mixing, the capsules containing bitumen emulsion would break, release their content and coat the aggregates. To study CMC, an extensive experimental programme has been carried out to evaluate the effect of compaction energy, cement content, curing time and binder type on the mechanical properties of CMC. It was found that CMC test samples increased their Marshall stability linearly with the increase of the compaction energy. Test samples could be demoulded immediately after compaction. Furthermore, the Marshall stability of CMC increased with the curing time, and the general strength improved with the increasing amount of capsules in the mixture. It was found that the bitumen in CMC did not have an important role on the strength of the pavement material, which came mainly from the alginate in the capsules. In short, cold mix pavement materials made with calcium-alginate (Ca-alginate) capsules is a novel material for pavements that has shown potential to be an alternative for conventional cold mix asphalt made with bitumen emulsion.

Concrete Asphalt Marshall Stability Using Concrete Objective Waste

“…(Ahmedzade et al, 2007) This mixture is better known as a hot-mix. (Alenezi et al, 2018) The dominant properties of asphalt concrete are more desirable and will determine the type of asphalt concrete chosen. (Gupta & Bellary, 2018) It is vital when designing the sidewall thickness.…”

Studi Perencanaan Perkerasan Lentur Dan Rencana Anggaran Biaya (Pada Proyek Ruas Jalan Karangtalun – Kalidawir Kabupaten Tulungagung)

“…Oleh karena itu dibutuhkan perkerasan jalan yang memadai dan layak untuk dipergunakan [2]. Perkerasan jalan menurut jenisnya dibagi menjadi tiga yaitu perkerasan lentur, perkerasan kaku dan perkerasan komposit [3].…”

A New Method of Mix Design for Cold Patching Asphalt Mixture

“…Bentonite (a kind of nano clay with strong water absorption) or microbial carbonate precipitation (MCP) has been added to CPAM with the objective of improving its capacity for moisture resistance. Moreover, these additives enhance the dehumidification and water damage prevention characteristics related to CPAM (Ling et al, 2016;Dong et al, 2018;Alenezi et al, 2019;Attaran Dovom et al, 2019). Besides, the use of cementing material instead of the emulsion can achieve the same effect.…”