Melting process of nanoparticle enhanced PCM through storage cylinder incorporating fins

Approaches for expedition of discharging of PCM involving nanoparticles and radial fins

Nanoparticles for phase change process of water utilizing FEM

Heat recovery application of nanomaterial with existence of turbulator

Use and misuse of the Kubelka-Munk function to obtain the band gap energy from diffuse reflectance measurements

The NOx degradation performance of nano-TiO2 as a coating material for the road environment was evaluated in this research. The nano-TiO2 coating materials for both road surface and roadside were prepared by using anatase nano-TiO2, activated carbon powder, silane coupling agent and deionized water. The impact of varying amounts of coating material and silane coupling agent were evaluated. The road environment of NOx degradation was simulated by the photocatalytic test system designed by the research team. For the road surface coating, the photocatalytic degradation experiments of NO under different radiation intensities were carried out. The results show that the material has good photocatalytic degradation performance, and the proper amount of silane coupling agent can enhance the bonding performance of the material and asphalt mixture. For the roadside coating, sodium dodecylbenzene sulfonate was selected as the surfactant to carry out the photocatalytic degradation experiment of NO2 with different dosages of surfactant. The results showed that when the mass ratio of nano-TiO2 and surfactant was about 1:2, the catalytic degradation effect of the material was the best.

https://www.mdpi.com/2079-4991/10/5/897/pdf

The NOx Degradation Performance of Nano-TiO2 Coating for Asphalt Pavement

Crater depth is a vital issue in dynamic compaction (DC) because it is a controlling parameter in DC and a characterization index of soil properties. A continuous mathematical model capturing the time-domain process of tamper displacement is presented in this paper. The model is simple and the parameters involved are easy to obtain. It was found that the accumulated crater depth increases but its increment in the crater depth decreases with multiple impacts. Three groups of large-scale DC tests with 10,000 kN∙m were conducted to evaluate the performance of the proposed model. The results showed that the proposed model captures the typical trends in the tamper displacement of single and multiple impacts. In addition, a concept of the crater depth ratio is proposed based on the proposed model, and the concept is used to evaluate the efficiency of DC and to predict the optimum tamping number of DCs.

Time-Domain Analysis of Tamper Displacement during Dynamic Compaction Based on Automatic Control

Study on pollution characteristics of urban pavement runoff.

Evaluation of different modulus input on the mechanical responses of asphalt pavement based on field measurements

The strength characteristics of asphalt mixture is crucial for the design and construction of asphalt roads. A strength model considering the effect of temperature is presented in this paper based on unified strength theory (UST). Firstly, direct tensile tests, uniaxial compression tests and anti-shear property tests of asphalt mixture were carried out respectively at different temperatures. Key mechanical parameters were obtained, including tensile strength (σt), compressive strength (σc) and shear strength (τ0) at different temperatures. Besides, the temperature sensitivity of σt, σc and τ0 was systematically analyzed. The results showed that the UST parameters of tensile-compression strength ratio α and failure criterion parameter b have a linear relationship with temperature t. A theoretical model to describe strength characteristics with the temperature of asphalt mixture was developed finally. The developed model was validated via applicability analysis. and it will provide theoretical support for the study of strength characteristics of asphalt mixture and engineering practice.

/pdf/a-unified-strength-model-of-asphalt-mixture-considering-2nfwsz0qhe.pdf

Li Xi

Papers

The NOx Degradation Performance of Nano-TiO2 Coating for Asphalt Pavement

Time-Domain Analysis of Tamper Displacement during Dynamic Compaction Based on Automatic Control

Study on pollution characteristics of urban pavement runoff.

Evaluation of different modulus input on the mechanical responses of asphalt pavement based on field measurements

A Unified Strength Model of Asphalt Mixture Considering Temperature Effect