A5038269546- Geothermal Energy Systems and Applications
- Adsorption and Cooling Systems
- Phase Change Materials Research
- Concrete and Cement Materials Research
- Grouting, Rheology, and Soil Mechanics
- Innovative concrete reinforcement materials
- Concrete Properties and Behavior
- Magnesium Oxide Properties and Applications
- Fluid Dynamics Simulations and Interactions
- Microbial Applications in Construction Materials
- Geotechnical Engineering and Soil Mechanics
- Drilling and Well Engineering
- Advanced Photocatalysis Techniques
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Stabilization
- Smart Materials for Construction
- Radioactive element chemistry and processing
- Recycling and utilization of industrial and municipal waste in materials production
- Coal and Its By-products
RISE Research Institutes of Sweden
2021-2024
Tennessee Technological University
2012-2017
In this study, a laboratory-scale prototype of borehole field has been designed and built to assess various innovative grouting products in fully controlled environment. Three novel grout formulations are developed evaluated: enhanced grout, mixture microencapsulated phase change material, shape stabilized material. The objective is evaluate the enhancement their thermal properties (i.e., conductivity energy storage capacity) compared those using commercial reference grout. Besides,...
This article presents the experimental results from a unique laboratory test-setup used to comparative study of heat transfer conditions in borehole exchangers with different grouts under controlled environment. The work was part larger, EU-funded project on advanced materials for pipes and grout, GEOCOND. Four grout columns formulations were cast tested cyclic heating cooling. One column using high thermal conductivity grout; two microencapsulated phase change material (MC-PCM) one...
The heavy metals leaching potential of lime fly ash cements was evaluated for one low loss on ignition (LLOI) and high (HLOI). Three different test methods were used: (1) a standard shaken (stirred) extraction test, (2) modified (3) EP-TOX test. Testing conducted the as-receive ashes samples cured 0, 7, 28, 84 days at 40°C. results show that such curing time sequences can be used to study rate sequestration by hydration product relative from ash. X-ray diffraction (XRD) characterize reaction...
Rice husk ash (RHA) having a porous sructure and high amount of amorphous silica nanoparticles (4 nm) decorated on the surface carbon nanosheets is suitable cheap candidate for use grout additive. In this study, neat RHA functionalized (f-RHA) with three different loadings were successfully incorporated into cement-bentonite based grouts by adjusting water to cement ratio. The workability developed RHA-based additives was analyzed in terms bleeding, density, flow spread, Marsh cone time....
Abstract This study summarizes molecular dynamics (MD) simulations and experiments using four ester‐based cement shrinkage reducing agents in pure water simulated pore solution. The esters were found to completely dissociate the alkaline solution form acid alcohol analogue compounds. analogues further be entirely responsible for surface tension reduction capacity of parent In addition, are not affected by relevant counterions present MD‐based analysis show that molecules stable hydrogen...
Dispersing Multi-Walled Carbon Nanotubes (MWCNTs) into concrete at low (<1 wt% in cement) concentrations may improve performance and properties provide enhanced functionalities. When MWCNT-enhanced is fragmented during remodelling or demolition, the stiff, fibrous carcinogenic MWCNTs will, however, also be part of respirable particulate matter released process. Consequently, systematic aerosolizing crushed concretes a controlled environment measuring this aerosol can give valuable insights...
Abstract The development of an innovative rock anchor prototype manufactured using high strength steel sheets produced locally in Sweden is the core PROWIND concept. Steel provide a design freedom to easily manufacture complex geometries, which can be advantageous enhance shear force transmission bond-length segment anchor. underlying challenge this concept has been solution meets requirements today and future technological advancements, all while keeping conventional installation practices...
Microencapsulated phase-change-materials (PCMs) incorporated in cementitious grout can be used as a source of energy storage geothermal systems. Differential scanning calorimetry (DSC) is widely technique to measure the latent heat or specific PCM-embedded materials. However, using milligram sample sizes (as required by DSC) material fails represent actual scale components. non-isothermal conduction microcalorimetry (MC) good alternative, since it accurately flow at least 1-10 g samples...
Microencapsulated phase-change-materials (PCMs) incorporated in cementitious grout can be used as a source of energy an underground thermal storage system. Differential scanning calorimetry (DSC) is widely technique to measure the latent heat or specific PCM-embedded materials. However, using milligram sample sizes (as required by DSC) material fails represent actual scale components. This reason why, present paper, non-isothermal conduction microcalorimetry (MC) was evaluated tool for...
Abstract When it comes to underground structures, water ingress from the surrounding formations leads several environmental, economic and sustainability issues. To obtain sealing, grouting of rock fractures is done. Today, in operations, which are commonly conducted almost all tunnel subsurface infrastructure projects, pressure applied static. This type might be suitable for large fracture apertures > 100 μm, but has been acknowledged that difficult sufficient penetration through smaller...