Evaluation of Moisture Damage in Asphalt Mixtures at Macro- and Nanoscales

The use of waste materials has been increasingly conceived as a sustainable alternative to conventional materials in the road construction industry, as concerns have arisen from the uncontrolled exploitation of natural resources in recent years. Re-refined acidic sludge (RAS) obtained from a waste material—acidic sludge—is an alternative source for bitumen. This study’s primary purpose is to evaluate the resistance of warm mix asphalt (WMA) mixtures containing RAS and a polymeric additive against moisture damage and rutting. The modified bitumen studied in this research is a mixture of virgin bitumen 60/70, RAS (10, 20, and 30%), and amorphous poly alpha olefin (APAO) polymer. To this end, Marshall test, moisture susceptibility tests (i.e., tensile strength ratio (TSR), residual Marshall, and Texas boiling water), resilient modulus, and rutting assessment tests (i.e., dynamic creep, Marshall quotient, and Kim) were carried out. The results showed superior values for modified mixtures compared to the control mix considering the Marshall test. Moreover, the probability of a reduction in mixes’ moisture damage was proved by moisture sensitivity tests. The results showed that modified mixtures could improve asphalt mixtures’ permanent deformation resistance and its resilience modulus. Asphalt mixtures containing 20% RAS (substitute for bitumen) showed a better performance in all the experiments among the samples tested.

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Moisture damage analysis based on adhesive failure in asphalt mixtures

International Journal of Pavement Engineering ◽

10.1080/10298436.2020.1862840 ◽

2021 ◽

pp. 1-11

Author(s):

Bhaskar Pratim Das ◽

Anjan Kumar Siddagangaiah

Keyword(s):

Moisture Damage ◽

Asphalt Mixtures ◽

Damage Analysis ◽

Adhesive Failure

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AN OVERVIEW OF MOISTURE DAMAGE PERFORMANCE TESTS ON ASPHALT MIXTURES

Jurnal Teknologi ◽

10.11113/jt.v78.9497 ◽

2016 ◽

Vol 78 (7-2) ◽

Cited By ~ 1

Author(s):

Fauzan Mohd Jakarni ◽

Muhammad Fudhail Rosli ◽

Nur Izzi Md Yusoff ◽

Md Maniruzzaman A Aziz ◽

Ratnasamy Muniandy ◽

...

Keyword(s):

Moisture Damage ◽

Test Methods ◽

Asphalt Mixtures ◽

Performance Tests ◽

Cohesive Failure ◽

Modified Bitumen ◽

Traffic Loading ◽

Construction Methods ◽

Evaluation Phase ◽

Two Phases

This paper presents a review of moisture damage performance tests on asphalt mixtures. The moisture damage remains to be a detriment to the durability of the Hot Mix Asphalt (HMA) pavement. Moisture damage can be defined in forms of adhesive failure between bitumen and aggregates and cohesive failure within bitumen. Aggregate mineralogy, bitumen characteristics and anti-stripping additive dominantly influence the performance of asphalt mixtures towards moisture damage alongside construction methods, climate and traffic loading. Various laboratory test methods have been developed to quantify the moisture damage performance of asphalt mixtures by resembles the action in the field, including qualitative test such as Boiling Water Test (ASTM D3625) and quantitative tests such as Modified Lottman Test (AASHTO T283). Both of these tests consist of two phases, which are conditioning and evaluation phase. This paper will review the effectiveness of the selected available tests based on various asphalt mixtures materials. Generally, this study indicates that asphalt mixtures consisted of limestone aggregates, modified bitumen and addition of anti-stripping additives will provide more resistant towards moisture damage.

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Coupling of oxidative ageing and moisture damage in asphalt mixtures

Road Materials and Pavement Design ◽

10.1080/14680629.2015.1030835 ◽

2015 ◽

Vol 16 (sup1) ◽

pp. 265-279 ◽

Cited By ~ 34

Author(s):

Prabir Kumar Das ◽

Hassan Baaj ◽

Niki Kringos ◽

Susan Tighe

Keyword(s):

Moisture Damage ◽

Asphalt Mixtures ◽

Oxidative Ageing

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Effectiveness of Loaded Wheel Tracking Test to Ascertain Moisture Susceptibility of Asphalt Mixtures

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/03611981211036355 ◽

2021 ◽

pp. 036119812110363

Author(s):

Moses Akentuna ◽

Louay N. Mohammad ◽

Sanchit Sachdeva ◽

Samuel B. Cooper ◽

Samuel B. Cooper

Keyword(s):

Asphalt Binder ◽

Asphalt Mixture ◽

Moisture Damage ◽

Asphalt Mixtures ◽

Asphalt Binders ◽

Creep Recovery ◽

Moisture Susceptibility ◽

Freeze Thaw ◽

Wheel Tracking ◽

Mixture Samples

Moisture damage of asphalt mixtures is a major distress affecting the durability of asphalt pavements. The loaded wheel tracking (LWT) test is gaining popularity in determining moisture damage because of its ability to relate laboratory performance to field performance. However, the accuracy of LWT’s “pass/fail” criteria for screening mixtures is limited. The objective of this study was to evaluate the capability of the LWT test to identify moisture susceptibility of asphalt mixtures with different moisture conditioning protocols. Seven 12.5 mm asphalt mixtures with two asphalt binder types (unmodified PG 67-22 and modified PG 70-22), and three aggregate types (limestone, crushed gravel, and a semi-crushed gravel) were utilized. Asphalt binder and mixture samples were subjected to five conditioning levels, namely, a control; single freeze–thaw-; triple freeze–thaw-; MiST 3500 cycles; and MiST 7000 cycles. Frequency sweep at multiple temperatures and frequencies, and multiple stress creep recovery tests were performed to evaluate asphalt binders. LWT test was used to evaluate the asphalt mixture samples. Freeze–thaw and MiST conditioning resulted in an increase in stiffness in the asphalt binders as compared with the control. Further, freeze–thaw and MiST conditioning resulted in an increase in rut depth compared with the control asphalt mixture. The conditioning protocols evaluated were effective in exposing moisture-sensitive mixtures, which initially showed compliance with Louisiana asphalt mixture design specifications.

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