Compact Multi Gel Cast
- Known as:
- Compact Multi Gel Cast
- Catalog number:
- 2322600
- Category:
- -
- Supplier:
- Ato
- Gene target:
- Compact Multi Gel Cast
Related genes to: Compact Multi Gel Cast
- Gene:
- CAST NIH gene
- Name:
- calpastatin
- Previous symbol:
- -
- Synonyms:
- -
- Chromosome:
- 5q15
- Locus Type:
- gene with protein product
- Date approved:
- 1990-07-03
- Date modifiied:
- 2015-08-24
Related products to: Compact Multi Gel Cast
Related articles to: Compact Multi Gel Cast
- Asphalt serves as the core binder for heavy-load high-modulus pavements, and its viscoelasticity across a wide temperature range directly governs pavement-rutting resistance, low-temperature crack resistance and service life. Virgin asphalt contains abundant light fractions and exhibits insufficient stiffness at high temperatures. Modification with single styrene-butadiene-styrene block copolymer (SBS) fails to meet the anti-deformation requirements under heavy loads, while separate incorporation of nano-silica (nano-SiO) aggravates low-temperature brittleness. Existing studies lack comprehensive investigations into the rheological evolution laws and synergistic microscopic mechanisms of asphalt modified by combined SBS and nano-SiO. In this paper, virgin asphalt was adopted as raw material to prepare composite modified asphalt with gradient dosages. Integrated macroscopic performance tests and multi-scale microscopic characterizations were conducted for systematic analysis. High-temperature, low-temperature and fatigue performances were evaluated via conventional physical property tests, temperature sweep tests, multiple stress creep recovery (MSCR), linear amplitude sweep (LAS) and bending beam rheometer (BBR) tests. Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC) and thin-layer chromatography-flame ionization detection (TLC-FID) were utilized to analyze variations in functional groups, molecular weight and four fractions, to elaborate the two-phase synergistic modification mechanism. The results demonstrate that the combined incorporation of SBS and nano-SiO synchronously optimizes the comprehensive performances of asphalt. Compared with single-SBS-modified asphalt, the sample with optimal dosages achieves elevated high-temperature modulus and rutting factor, reduced permanent deformation, improved low-temperature stress relaxation capacity and remarkably decelerated fatigue damage accumulation rate. Microscopic characterizations verify that only physical interactions occur during modification without generating new substances. The nano-filler facilitates the aggregation of small molecules and increases the proportion of macromolecules; meanwhile, it physically adsorbs light fractions and induces apparent redistribution of asphalt components, raising the relative proportion of resins and asphaltenes in the organic asphalt phase, realizing moderate heavy-fraction enrichment of the asphalt system. This study clarifies the internal correlation between molecular fraction evolution characteristics and macroscopic rheological performances of asphalt co-modified by nano-SiO and SBS, which can provide theoretical references for formula design and engineering application of modified asphalt materials. - Source: PubMed
Publication date: 2026/08/15
Yin PengPan BaofengDong TianlingLiu TaoSun Shengkai - This work explores V-alloyed AlCoVFeNi high-entropy alloys that are solution-treated at 1000-1200 °C for five hours and water-quenched. Solidification of this high-entropy alloy follows the sequence face-centered cubic (FCC) → ordered L1 → body-centered cubic (BCC) → ordered B2. All treated alloys maintain dual FCC-BCC-B2 microstructures, with temperature altering only morphological features. At 1000 and 1100 °C, coherent spinodal decomposition takes place in FCC matrices to form rodlike precipitates with 20.3% lattice misfit; meanwhile, Ostwald ripening lengthens the precipitates from 1.41 to 2.11 μm. Spinodal decomposition is inhibited at 1200 °C, which is accompanied by coarsening and granulation of B2-ordered BCC grains. Slow atomic diffusion prevents recrystallization even above 0.4. Solution heat treatment dissolves the B2 phases to generate supersaturated solutions stronger than the as-cast counterparts. Elevated solution temperatures reduce hardness (243-190 MPa) and tensile strength (919-839 MPa) but boost elongation (26-35%). Fractures display mixed dimple-cleavage features. Overall, a five-hour solution treatment at 1100 °C plus water quenching delivers balanced strength (851 MPa) and ductility (33%), serving as the optimal heat treatment for this alloy. - Source: PubMed
Publication date: 2026/08/21
Duan HongboYang WeiMa ZhijunLi Yuan - This study evaluated the effect of austempering on the microstructure, mechanical properties, and dry-sliding wear performance of EN-GJS-800-8 ductile iron produced as cross-step castings with wall thicknesses of 8, 17, 38, and 48 mm. As-cast and heat-treated specimens were examined by optical microscopy and quantitative image analysis, Brinell hardness, tensile and Charpy impact testing, ball-on-disk testing, and three-dimensional confocal profilometry. Austenitization at 880-890 °C for 2.5 h followed by austempering at 370-380 °C for 2 h produced an optically homogeneous acicular matrix consistent with ausferrite in all investigated sections and reduced the wall-thickness-related variation in hardness. The average hardness reached 296.4 HBW, the ultimate tensile strength 935 MPa, and elongation 8.6%. The mean Charpy impact energy increased from 5.12 to 10.06 J. The wear-track cross-sectional area decreased from approximately 2.98 × 10 to 210 μm, while the maximum track depth decreased from 43.5 to 3 μm. The selected heat-treatment cycle therefore improved strength, impact-energy absorption, and wear resistance while promoting a more uniform response across the casting sections. - Source: PubMed
Publication date: 2026/08/17
Jaroszek JarosławMiko EdwardNowakowski ŁukaszZaczyński Artur - Alternative fine aggregates are often assessed using compressive strength at a single reference age, which may conceal an early maximum followed by later strength loss. This preliminary screening study compared mortars containing river sand (RS), standard sand (StS), desert sand (DS), soil sand (SS), coal gangue sand (CGS), and metamorphic rock sand (MRS) under one nominal mixture design. For each aggregate, one mortar batch was prepared and nine 70.7 mm cubes were cast, with three specimens tested at 3, 7, and 28 d. RS, StS, DS, and SS continued to gain strength. Within the single CGS batch, strength decreased from 15.56 ± 0.31 MPa at 7 d to 11.68 ± 0.15 MPa at 28 d; within the single MRS batch, it decreased from 21.63 ± 0.48 MPa to 15.75 ± 0.20 MPa. The corresponding losses were 24.95% and 27.18%, and exploratory within-batch Tukey tests yielded < 0.001. These statistics describe specimen-level variation within the tested batches and do not establish batch-to-batch reproducibility. Representative 28 d SEM fields, raw-aggregate EDS, and qualitative XRD provide contextual observations but lack the temporal and spatial resolution needed to reconstruct a defect-formation process between 7 and 28 d. Because aggregate moisture state, absorption, flow, air content, and compaction were not independently controlled, the results identify a screening signal that requires independent-batch validation rather than a general material mechanism. - Source: PubMed
Publication date: 2026/08/13
Ji FengXing YuexiangFu JingYin HuiWang Gang - This study investigates the influence of joining technology on the microstructural evolution and mechanical properties of joints produced from extruded AA2017 aluminum alloy rods. Rotary Friction Welding (RFW) was compared with conventional TIG welding to evaluate the effects of solid-state and fusion-based joining mechanisms. The joints were characterized using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), electron backscatter diffraction (EBSD), hardness measurements, tensile testing, and fracture analysis. TIG welding produced a coarse-grained cast microstructure within the fusion zone, whereas RFW generated a fine-grained microstructure formed through intense thermomechanical deformation accompanied by crystallographic texture evolution. These distinct microstructural characteristics resulted in markedly different mechanical behavior. The RFW joints achieved an ultimate tensile strength of 247 MPa and an elongation to failure of 12.5%, compared with 160 MPa and 1.7%, respectively, for the TIG-welded joints. The results demonstrate that the joint formation mechanism is the primary factor governing the microstructural evolution and mechanical performance of AA2017 alloy joints. - Source: PubMed
Publication date: 2026/08/09
Noga PiotrKula AnnaWiewióra MarcelSkrzekut Tomasz