Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental study on interaction between compressibility and permeability of a crushed sandstone-mudstone particle mixture
The present study focuses on the compressibility and permeability characteristics of a crushed sandstone-mudstone particle mixture (SMPM). Two type of laboratory tests, which are compressibility-permeability test (CPT) and compressibility test only (CTO), are performed. Based on the test data, the effects of the seepage action on the compressibility and ones of the void ratio (e) on the permeability are analyzed. The rate of consolidation of the crushed SMPM is also discussed. The values of compressibility index (C c ) obtained from the CPT are greater about 1.32-4.81% than ones obtained from the CTO, but the values of preconsolidation stress (σ p ) obtained from the CPT are smaller about 2.34-9.83% than ones obtained from the CTO. The slope of fitting line of e∼logK (where K is the coefficient of permeability, and log is the logarithm to base 10), defined as the permeability index (K c ), ranges from 0.146 to 0.337 with an average of 0.226. The value of C c /K c , used to evaluate the rate of consolidation, ranges from 0.905 to 1.250 with an average of 1.031. The rate of consolidation of the crushed SMPM may be analyzed by Terzaghi's theory due to the average value of C c /K c very close to 1.0.
Experimental study on interaction between compressibility and permeability of a crushed sandstone-mudstone particle mixture
The present study focuses on the compressibility and permeability characteristics of a crushed sandstone-mudstone particle mixture (SMPM). Two type of laboratory tests, which are compressibility-permeability test (CPT) and compressibility test only (CTO), are performed. Based on the test data, the effects of the seepage action on the compressibility and ones of the void ratio (e) on the permeability are analyzed. The rate of consolidation of the crushed SMPM is also discussed. The values of compressibility index (C c ) obtained from the CPT are greater about 1.32-4.81% than ones obtained from the CTO, but the values of preconsolidation stress (σ p ) obtained from the CPT are smaller about 2.34-9.83% than ones obtained from the CTO. The slope of fitting line of e∼logK (where K is the coefficient of permeability, and log is the logarithm to base 10), defined as the permeability index (K c ), ranges from 0.146 to 0.337 with an average of 0.226. The value of C c /K c , used to evaluate the rate of consolidation, ranges from 0.905 to 1.250 with an average of 1.031. The rate of consolidation of the crushed SMPM may be analyzed by Terzaghi's theory due to the average value of C c /K c very close to 1.0.
Experimental study on interaction between compressibility and permeability of a crushed sandstone-mudstone particle mixture
Wang, Jun-Jie (Autor:in) / Huang, Shi-Yuan / Wen, Yu-Mian / Yang, Yang / Liu, Ming-Wei
2017
Aufsatz (Zeitschrift)
Englisch
| Taylor & Francis Verlag | 2017
Particle Breakage of a Crushed Sandstone–Mudstone Particle Mixture
| Springer Verlag | 2021