caa a22 4500 606223754 CHVBK 20210128101140.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s11204-015-9307-y doi (NATIONALLICENCE)springer-10.1007/s11204-015-9307-y Expansion Model Test of Expansive Soil in Different Stress State [Elektronische Daten] [Bin Huang, Zhan-lin Cheng, Wei Zhang, Xu-dong Fu, Han Xu] The hydroscopic expansion of expansive soil always leads to engineering safety problems. With mid-expansive soil at Nanyang, the relationship among the expansion ratio caused by total wetting of expansive soil, eventual and initial ratio of water content, and overlying loads was studied. By taking measures such as improving the controlling system of water inlet and measuring the outer body changes, tri-axial stress state expansive tests were realized, and the rules and relationships among volume expansion ratios caused by total wetting, eventual and initial ratio of water content, and averaged primary stress were studied. The experiments show that the volume expansion ratio under different stress states and eventual ratio of water content both decrease with increase in overlying pressure or averaged primary stress, which represents a relatively good linear relationship in semilogarithmic coordinates. The relationship among expansion models at different stress states and the unified expression for these models were established, on the basis of which any expansion constitutive relation of expansive soil at any water-containing ratio could be obtained. The expansion experiments are easily carried out with concise model expressions and parameters with explicit physical meanings and can also be used in numerical analysis and simplifying calculations. Springer Science+Business Media New York, 2015 Huang Bin Changjiang River Scientific Research Institute, Wuhan University, Wuhan, China aut Cheng Zhan-lin Changjiang River Scientific Research Institute, Wuhan University, Wuhan, China aut Zhang Wei Changjiang River Scientific Research Institute, Wuhan University, Wuhan, China aut Fu Xu-dong College of Civil and Architecture Engineering, Wuhan University, Wuhan, China aut Xu Han Changjiang River Scientific Research Institute, Wuhan University, Wuhan, China aut Soil Mechanics and Foundation Engineering Springer US; http://www.springer-ny.com 52/2(2015-05-01), 57-67 0038-0741 52:2<57 2015 52 11204 https://doi.org/10.1007/s11204-015-9307-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11204-015-9307-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang Bin Changjiang River Scientific Research Institute, Wuhan University, Wuhan, China aut NATIONALLICENCE 700 1- Cheng Zhan-lin Changjiang River Scientific Research Institute, Wuhan University, Wuhan, China aut NATIONALLICENCE 700 1- Zhang Wei Changjiang River Scientific Research Institute, Wuhan University, Wuhan, China aut NATIONALLICENCE 700 1- Fu Xu-dong College of Civil and Architecture Engineering, Wuhan University, Wuhan, China aut NATIONALLICENCE 700 1- Xu Han Changjiang River Scientific Research Institute, Wuhan University, Wuhan, China aut NATIONALLICENCE 773 0- Soil Mechanics and Foundation Engineering Springer US; http://www.springer-ny.com 52/2(2015-05-01), 57-67 0038-0741 52:2<57 2015 52 11204