Overview on cold cement bitumen emulsion asphalt

Fang, Xing; Hernandez, Álvaro García; Lura, Pietro

doi:10.21809/rilemtechlett.2016.23

Cited by 43 publications

(13 citation statements)

References 28 publications

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“…Moreover, Figure 9(b) shows the influence of the addition of 1% Portland cement on the Marshall force resisted, measured at different curing times in CMA and CMC materials. In it can be observed that cement addition improved the strength of all the materials studied, which is consistent with results found by Fang et al (2016), where the cement to increase the strength of CMA specimens.…”

Section: Effect Of Binder Type and Amount On The Mechanical Strength Of Cold Mixes At Different Curing Timessupporting

confidence: 90%

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

Alenezi

Norambuena-Contreras

Dawson

et al. 2019

Journal of Cleaner Production

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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.

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Section: Effect Of Binder Type and Amount On The Mechanical Strength Of Cold Mixes At Different Curing Timessupporting

confidence: 90%

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

Alenezi

Norambuena-Contreras

Dawson

et al. 2019

Journal of Cleaner Production

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“…Nowadays, environmental and economical requirements are pushing the development of eco-friendly and low-energy road paving materials. In this regard, bitumen emulsion mixtures play an important role because they are manufactured at ambient temperature and therefore, significantly reduce carbon dioxide emissions and energy consumption, with respect to hot and warm bituminous mixtures [1,2]. Bitumen emulsion mixtures are also widely used in cold recycling.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of bitumen emulsion–cement mortars: mechanical behaviour and relation to mixtures

2018

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Cold bitumen emulsion mixtures are ecofriendly materials for road pavement construction. Portland cement and other supplementary cementitious materials are added to the mixtures to improve their performance. In bitumen emulsion-cement (BEC) mixtures, the two binders affect the mechanical behaviour and the curing process. In this research, BEC mixtures are considered as multiphase composite materials consisting of a mortar matrix and coarse aggregate inclusions. The main objectives are to identify the composition of BEC mortar phase and to compare mixtures and mortars throughout the curing process. Starting from two BEC mixtures containing 80% reclaimed asphalt, eighteen mortars were manufactured by changing their water and air voids content. Then, two design composition were selected to analyse the curing process by monitoring indirect tensile strength (ITS), indirect tensile stiffness modulus (ITSM) and moisture loss. Results showed that the short-term ITS of mortars (1 day of curing) increased by reducing their water and their air voids content. During curing (from 1 to 28 days), the mechanical properties (ITS and ITSM) of mixtures and mortars increased in a similar way. Unique relationships were identified between mortar and mixture properties, regardless of bitumen to cement (B/C) ratio, curing time and curing condition. In terms of predictive behaviour, the design composition slightly underestimated mixture stiffness and overestimated mixture strength. Keywords Cold paving technologies Á Bitumen emulsion Á Cement Á Mortar Á Curing The original version of this article was revised due to a retrospective Open Access order.

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“…Thus, CBE mastic could show low fatigue and fracture resistance under high load cycles [ 17 ]. Therefore, the mechanism of filler reinforcement in CBE mastic plays a major role in controlling the distress and failure mechanisms in the CBE mixture [ 18 ]. During its service life, the CBE mixture is subjected to different distress.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Influence of the Chemical Nature of Fillers on Rheological and Fatigue Behavior of Bitumen Emulsion Mastic

Al-Mohammedawi

Mollenhauer

2020

Materials

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Cold Bitumen Emulsion (CBE) mixture technologies have been recently developed to lower pavement construction temperatures to reduce environmental costs and control gas emissions. Due to its poor early mechanical strength, active fillers (i.e., cement) have been used to obtain high early stiffness in order to have the potential for timely construction of the next layer. There is, however, a lack of understanding about the impact of active fillers on the viscoelastic behavior and fatigue damage resistance of CBE mastics. This study, therefore, aims to identify the influence of active fillers on the rheological properties and the resulting fatigue behavior of CBE mastic, supported by chemical analysis for the filler-bitumen emulsion. For this aim, bitumen emulsion was mixed separately with seven fillers/blended fillers to prepare the CBE mastics. Various experiments, including continuous pH monitoring tests (chemical reactivity of filler-bitumen emulsion), Strain Sweep (SS) tests, Temperature-Frequency Sweep (TFS) tests, Time Sweep (TS) tests, and Linear Amplitude Sweep (LAS) tests were conducted on the CBE binder and the prepared mastics. Results show that the rheological performance and the fatigue damage resistance depend not only on the filler inclusions but also on filler type and chemistry. On this basis, the rise in complex shear modulus and the decrease in the viscous component is associated with a significant enhancement in fatigue performance for specific fillers.

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Overview on cold cement bitumen emulsion asphalt

Cited by 43 publications

References 28 publications

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

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

Experimental study of bitumen emulsion–cement mortars: mechanical behaviour and relation to mixtures

A Study on the Influence of the Chemical Nature of Fillers on Rheological and Fatigue Behavior of Bitumen Emulsion Mastic

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