The aim of this paper is to numerically investigate the effect of size distribution and shape of elastic inclusions on the long-term creep of concrete. Several microstructures with prescribed size distribution and spherical or polyhedral shape of inclusions are generated. By using the 3D numerical ...
The objective of this study is to visualize and simulate microscale properties of asphalt concrete with three-dimensional discrete element models under mec... L Yu,Z You - 《Journal of Computing in Civil Engineering》 被引量: 109发表: 2009年 Unified Method to Quantify Aggregate Shape Angularity ...
Particle size distribution and shape properties are known to significantly influence the mechanical properties, e.g. strength, permanent deformation and packing density, of aggregates. Image analysis is a more efficient and accurate approach to quantify the particle size and shape compared with the man...
The use of CBA as aggregate improves the texture of the concrete by adding more irregular and fine-shaped porous particles to the mix, which are often highly rough surfaced [136]. However, due to the CBA’s irregular shape and constant water absorption, its workability deteriorates [4,120,...
The surface concrete sustains a higher degree of damage compared to the internal concrete, resulting in an average FTD of small-size specimens that surpasses that of large-size specimens. The residual strength of RAC can be assessed using a non-destructive test, specifically the ultrasonic wave ...
Threedimensionalparticlesidentificationandshapeparametersresearch oncoarseaggregatesofasphaltmixtureusingX-rayCTimages DUANYue一 口,。。ZHANGXiao—ning,ZHANGShun—xian,YUANMiao—miao 段跃华, 张肖宁, 张顺先, 苑苗苗 f1.Scho010fCivilEngineeringandTransportation,SouthChinaUniversityofTechnology,Guangzhou510640,China...
The radiation-induced volumetric expansion (RIVE) of aggregate-forming minerals causes damage in concrete exposed to high levels of fast neutrons fluence (
Application to aggregates used in concrete: Cem. Concr. Res. 31(10), 1621–1638 (2002) Google Scholar Erdogan, S.T., et al.: Shape and size of microfine aggregates: X-ray microcomputed tomography vs. laser diffraction. Powder Technol. 177(2), 53–63 (2007) Bullard, J.W., et ...
Keywords: self-compacting concrete; morphology; coarse aggregate; flowability; fibre-reinforcement 1. Introduction An increase of interest in the use of self-compacting concrete (SCC) in civil engineering has recently been observed. It is still evolving and it covers an ever-wider range of ...
Therefore, the water absorption of recycled concrete aggregate (RCA) is 30–200% higher than that of the NA [7]. Additionally, the crushing method significantly affects the shape and texture of the RCA, and the crushing process may also produce new micro cracks in RCA. It is widely ...