A5062637209- Concrete and Cement Materials Research
- Innovative concrete reinforcement materials
- Concrete Properties and Behavior
- Magnesium Oxide Properties and Applications
- Advanced ceramic materials synthesis
- Innovations in Concrete and Construction Materials
- Recycling and utilization of industrial and municipal waste in materials production
- Fire effects on concrete materials
- Smart Materials for Construction
- High-Velocity Impact and Material Behavior
- Concrete Corrosion and Durability
- Grouting, Rheology, and Soil Mechanics
- Recycled Aggregate Concrete Performance
- Structural Response to Dynamic Loads
- Rock Mechanics and Modeling
- Metal Extraction and Bioleaching
- Integrated Circuits and Semiconductor Failure Analysis
- Ion-surface interactions and analysis
- Advanced Surface Polishing Techniques
- Asphalt Pavement Performance Evaluation
Southeast University
2013-2025
Materials Science & Engineering
2018
The Synergetic Innovation Center for Advanced Materials
2018
In this research, silane coupling agent was used to modify the surface of nano-SiO2, particles and effects modified nano-SiO2 on mechanical properties high-performance cement-based composites its mechanism were systematically studied. The results indicated that optimum modification parameters a content 10%, reaction temperature 65 °C, time 8 h. Compared with unmodified promoted accelerated hydration process cement. pozzolanic effect, filling nucleation effect made microstructure composite...
The cement-based materials widely used in infrastructure construction, such as bridges and ports, are subjected to seawater erosion medium during their service life, durability has always been a concern. diffusion coefficient of chloride ions is an important indicator the research materials’ durability, pore structure one most fundamental reasons affecting behavior ions. In this paper, Mercury intrusion porosimetry (MIP), Nuclear magnetic resonance (NMR), Nitrogen adsorption method (NAD)...
The effects of metakaolin (MK) on the mechanical and microstructural properties ultra-high performance cement-based composite (UHPCC) were studied in this paper. microstructure UHPCC was investigated via XRD, SEM, nanoindentation, X-ray CT, other different analytical testing methods. results indicated that improved with adding MK. Blended mortars 10% MK showed highest compressive flexural strengths comparison to others. As a result Ca(OH)2 consumption through pozzolanic reaction MK,...
Good workability and mechanical properties are both important for ultra-high performance cement-based composites (UHPCC). To achieve this goal, UHPCC was produced through a cost-effective approach of substituting cement with mineral admixtures. Based on Modified Andreasen Andersen grading (MAA) model orthogonal experimental design, key factors were identified analyzed. The effect the sand-to-binder ratio bulk packing density examined, while impact water-to-binder systematically studied....
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Silica fume (SF) is a valuable nanoscaled industrial by‐product used in cementitious materials owing to its filling and pozzolanic effect. However, the heavy agglomeration of SF severe common problem. In this study, surface modification with polyacrylic acid (PAA) was applied on achieve better dispersion optimize hydration process cement at early age. The particle size distribution properties SF, as well modified were investigated. results demonstrated that particles efficiently mitigated by...
The effects of the addition rice husk ash (RHA) on mechanical and microstructural properties an ultra-high performance cement-based composite (UHPCC) was studied. microstructure UHPCC investigated using X-ray diffraction, mercury intrusion porosimetry, scanning electron microscopy other analytical test methods. results showed that improved with RHA. Mortars blended 15% RHA highest compressive flexural strengths. For mortars reinforced 3% steel fibres by volume, both strengths were remarkably...
Silica fume (SF) is an essential component in ultra-high-performance concrete (UHPC) to compact the matrix, but nucleus effect also causes rapid hydration, which results high heat release and large shrinkage. In this paper, carboxylic agents, including polyacrylic acid polycarboxylate superplasticizer, were used surface modify SF adjust activity mitigate hydration at early time promote continuous for a long period. The dispersion properties of modified (MSF), as well strength pore structure...
The coupling acid rain and carbonization significantly accelerated the corrosion at alternant condition, increased ratio of macro capillary pores.