Investigation of Coarse Aggregate Strength for Use in Stone Matrix Asphalt

Celaya, Brandon Joseph; Haddock, John E.

doi:10.5703/1288284313400

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…A study was conducted in 2007 at the University of Oklahoma in the form of PhD dissertation. In this study, a basic method was used based on properties of surface free energy of bitumen and aggregates to describe bitumen-aggregate interfacial relationships in the moisture damage process [27]. In another study, a qualitativequantitative method based on surface energy was used to assess moisture damage.…”

Section: Literature Reviewmentioning

confidence: 99%

Examining the Effect of Dry Resin on Moisture Sensitivity of Asphaltic Mixtures

Jajin

Hamedi

2018

CivileJournal

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Moisture damage in asphaltic mixtures is defined by the loss of durability and resistance caused by the effect of moisture. The most common way to improve moisture damage in asphaltic mixtures is to use anti-strip additives. This study tended to use dry resin polymer additive to make a moisture-resistant asphaltic mixture. Two types of aggregate indicating different sensitivities against moisture were studied. In order to compare the effect of this material with other anti-strip additives, this study evaluated the effect of hydrated lime on reducing moisture damage and comparing its effect with dry resin polymer additive. The effect of these materials was evaluated by mechanical and thermodynamic concepts using indirect tensile ratio and surface free energy. The results indicated that dry resin polymer used in this study increased alkaline content and reduced acidic content of bituminous surface free energy, resulting in more adhesion between acidic aggregates which are more sensitive to resistance. It also improved bitumen-aggregate adhesion and reduced strip rate. Moreover, hydrated lime as an aggregate anti-strip agent and dry resin polymer as a bituminous modifier significantly increased the resistance of warm asphalt mixtures against moisture. The results of this study show that dry resin polymer can be used as an anti-strip agent instead of hydrated lime with operational problems.

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Section: Literature Reviewmentioning

confidence: 99%

Examining the Effect of Dry Resin on Moisture Sensitivity of Asphaltic Mixtures

Jajin

Hamedi

2018

CivileJournal

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“…A Figura 2.4 apresenta a macrotextura típica de uma mistura SMA em pista (TMN 11 mm). Segundo Celaya & Haddock (2006), a mistura SMA é considerada "Premium" na pavimentação. Ainda segundo esses autores, estima-se que a vida de serviço seja estendida em 20 a 30% a mais se comparada com as misturas densas convencionais, pela elevada resistência à deformação permanente (contato pedrapedra dos agregados graúdos) e pelo incremento da durabilidade (maior quantidade de ligante asfáltico).…”

Section: Sma Convencionalunclassified