Papers

@article{orosa_stresstemperature_2023,

title = {A stress–temperature superposition approach to study the nonlinear resilient behavior of cold recycled mixtures (CRM) with active filler addition},

author = {Pablo Orosa-Iglesias and Ignacio Pérez-Pérez and Ana M. Rodríguez-Pasandín and John E. Haddock},

url = {https://www.sciencedirect.com/science/article/pii/S0950061823011522},

doi = {10.1016/j.conbuildmat.2023.131439},

issn = {0950-0618},

year  = {2023},

date = {2023-06-01},

urldate = {2026-08-13},

journal = {Construction and Building Materials},

volume = {384},

pages = {131439},

abstract = {The asphalt paving sector is currently embracing and enhancing cold mixture technologies to reduce carbon emissions and decarbonize its operations. Cold recycled mixtures (CRM) have proven to be a promising alternative in road construction and rehabilitation, becoming a primary research focus. This study evaluates the effects on compactability and volumetric properties of adding 1% Portland cement or 1% hydrated lime to CRM made with 100% reclaimed asphalt pavement and bitumen emulsion. Dynamic triaxial tests with different confinement pressures (ranging from 20 to 200 kPa) and temperatures (5, 15, 25, and 35 °C) were used to determine the influence of these active filler additions on the resilient modulus (Mr) of the mixtures. All the mixtures exhibited increased Mr values at lower temperatures and reduced stress–dependency. Cement addition had the most favorable effect on compactability, reducing the necessary compaction energy, while mixtures with hydrated lime had more substantial increases in Mr and reduced stress dependencies. Finally, the results were analyzed by plotting master curves using a proposed novel approach called Stress–Temperature Superposition Principle (STSP), which allows for simpler and more straightforward analyses.},

keywords = {Active filler, Bitumen emulsion, Cold recycling mix, Reclaimed asphalt pavement, resilient modulus, Triaxial testing},

pubstate = {published},

tppubtype = {article}

}

@article{orosa_short-term_2022,

title = {Short-term resilient behaviour and its evolution with curing in cold in-place recycled asphalt mixtures},

author = {Pablo Orosa-Iglesias and Ignacio Pérez-Pérez and Ana M. Rodríguez-Pasandín},

url = {https://www.sciencedirect.com/science/article/pii/S0950061822002513},

doi = {10.1016/j.conbuildmat.2022.126559},

issn = {0950-0618},

year  = {2022},

date = {2022-03-01},

urldate = {2026-08-11},

journal = {Construction and Building Materials},

volume = {323},

pages = {126559},

abstract = {This study evaluates the short-term resilient behaviour of cold in-place recycled (CIR) asphalt mixtures with bitumen emulsion when they are more similar to non-cohesive granular materials than to conventional hot mixtures. Gyratory compacted CIR specimens were manufactured using different proportions of bituminous emulsion and water, and dynamic triaxial tests were conducted at different curing times. The resilient moduli were obtained experimentally and fitted using three numerical models. Characteristic nonlinear elastic behaviour and an increase in stiffness with curing time were observed. Water loss during curing and stiffness increase were found to be related. Mixtures with 2.50% residual bitumen and 2.75% added water showed the best short-term stiffness evolution.},

keywords = {Asphalt mixture, Bitumen emulsion, Cold in-place recycling (CIR), Gyratory compactor, Nonlinear elastic behaviour, Reclaimed asphalt pavement (RAP), Resilient behaviour, resilient modulus, Triaxial testing},

pubstate = {published},

tppubtype = {article}

}

@article{galan_evaluation_2020,

title = {Evaluation of the Resilient Modulus of Hot-Mix Asphalt Made with Recycled Concrete Aggregates from Construction and Demolition Waste},

author = {Juan José Galán-Díaz and Luís M. Silva and Ana M. Rodríguez-Pasandín and Ignacio Pérez-Pérez},

url = {https://www.mdpi.com/2071-1050/12/20/8551},

doi = {10.3390/su12208551},

issn = {2071-1050},

year  = {2020},

date = {2020-01-01},

urldate = {2026-08-06},

journal = {Sustainability},

volume = {12},

number = {20},

pages = {8551},

publisher = {Multidisciplinary Digital Publishing Institute},

abstract = {This paper reports the influence of the percentage of recycled aggregate (RCA) from construction and demolition waste (C&DW) together with the percentage of binder (L), curing time (t) and temperature (T) of the samples on the stiffness of a hot asphalt mixture. The study was carried out using the response surface methodology (RSM). The resilient modulus was chosen to estimate the stiffness of the mixture. The percentages of RCA studied were 0% (control), 5%, 10%, 20% and 30%, whilst 3.5%, 4% and 4.5% were those chosen for the binder content. Before compacting the samples, they were left into the oven to cure. Curing time, or pretreatment time, were set at 0 (control), 2 and 4 h. The samples were subjected to temperatures of 0, 10 and 20 °C. The natural aggregate is of the hornfels type. All the specimens studied showed high stiffness at low temperatures. According to this research, temperature proved to be the most influential factor on the decrease in the resilient modulus and, conversely, the percentage of recycled aggregate is not a significant factor in the range of values studied.},

keywords = {Construction and demolition waste, hot-mix asphalt, recycled concrete aggregate, resilient modulus, response surface methodology},

pubstate = {published},

tppubtype = {article}

}