A5103142822- Innovative concrete reinforcement materials
- Concrete and Cement Materials Research
- Innovations in Concrete and Construction Materials
- Manufacturing Process and Optimization
- Structural Load-Bearing Analysis
- Structural Behavior of Reinforced Concrete
- Industrial Technology and Control Systems
- Textile materials and evaluations
- Concrete Properties and Behavior
- Additive Manufacturing and 3D Printing Technologies
- Research in Cotton Cultivation
- Scheduling and Optimization Algorithms
- Transport Systems and Technology
- Advanced Manufacturing and Logistics Optimization
- Image Processing and 3D Reconstruction
Northeastern University
2024
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering
2019
Nanjing Hydraulic Research Institute
2019
Asus (Taiwan)
1999
Hong Kong Polytechnic University
1998
High-strength shotcrete is always needed to strengthen rock support. However, it will reversely increase the crack risk. Crack normally goes against durability and shortens service life of shotcrete. The objective this article was improve resistance with expansive agent internal curing agent. C50 10% silica fume taken as reference mix composition. Ring test thermal stress simulating actual temperature, relative humidity, constraint were carried out directly assess resistance. Restrained...
Abstract High rebound rate and low construction efficiency are outstanding problems for traditional shotcrete. To solve these problems, Nano-scale admixture (NSA) was used to prepare high performance wet-mix Tests of sidewall overall were carried out study the effect NSA. A total eight mixtures measured assess impact factors such as active variety (silica fume NSA), NSA content (7.5%, 10% 12.5%) fineness (128nm, 137nm 147nm) on rate. The results indicated that shotcrete reduced by 17% 25%...
To explore the mass distribution characteristics of wet-mix shotcrete during spraying process and adhesion process, taking used for tunnel support as background, concrete spray in air attached to receiving surface were talked about by carrying out some tests at scale (spray scale). The differences between them compared relationship was analyzed. Besides, plastic viscosity regarded important factor, whose effect deeply investigated. results showed that three-dimensional shape impact section...
Cotton slivers have very low tensile strength and are liable to unexpected drafting breakage during processing. If the sliver stress is not appropriately controlled, poor roving evenness frequent end-breaks will occur. This paper reports on experimental determination of cotton at various processing stages influence major drawing parameters strength. The investigation also revealed a close relationship between depth sliver-processing (reflecting fibre-straightening fibre parallelisation)...
Influences of moisture content and loading rate on flexural toughness were experimentally studied for fiber reinforced shotcrete (FRSC) with steel or macro synthetic polypropylene fiber. According to the four-point bending test method specified in ASTM C1609 Chinese standard CECS 13, specimens after drying 0h, 16h, 24h 72h condition (20±2)°C (60±5)% relative humidity was tested at a 0.05 mm/min. For 72h, rates mm/min, 0.10 0.20 mm/min respectively. With decreasing, T100,2.0, first-peak...
Influences of moisture content and loading rate on flexural toughness were experimentally studied for fiber reinforced shotcrete (FRSC) with steel or macro synthetic polypropylene fiber. According to the four-point bending test method specified in ASTM C1609 Chinese standard CECS 13, specimens after drying 0h, 16h, 24h 72h condition (20±2)°C (60±5)% relative humidity was tested at a 0.05 mm/min. For 72h, rates mm/min, 0.10 0.20 mm/min respectively. With decreasing, T100,2.0, first-peak...