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Date: February 25, 05:46AM Society: agu-wp10
Name: Meng-Chia Weng Amount Paid: $60.00
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CONTROL ID: 823204
TITLE: Interpretations on how the macroscopic mechanical sandstone affected by microscopic properties
PRESENTATION TYPE: Assigned by Committee
SECTION: Volcanology, Geochemistry and Petrology (V) SESSION: V06. Studies of Mechanical Properties of Earth M Engineering and Geosciences Applications.
AUTHORS (FIRST NAME, LAST NAME): Fu-Shu Jeng1, M
Weng2, Hung-Hui Li3
INSTITUTIONS (ALL): 1. National Taiwan University , Taipe 2. National University of Kaohsiung, Kaohsiung, Taiwan. 3. National Defense University, Taoyuan County, Taiwan. ABSTRACT BODY: The geotechnical features, including str deformational behavior and wetting softening phenomena, o kinds of sandstones sampled from northern Taiwan were ex laboratory experiments. According to the degree of the found
softening behavior as well as the deformational behavior, tw sandstones, Type A and Type B, were accordingly identified is characterized by more deformation and more significant w In addition, the influence of the petrographic factors over the mechanical behavior, including uniaxial compressive strengt strength reduction ratio R, were further studied. Among the e petrographic factors, porosity (n) and Grain Area Ratio (GAR be the key influencing factors, and empirical relations of UCS expressed in terms of n and GAR, are accordingly proposed empirical relations are found to be consistent not only with th sandstones but also with other sandstones. Furthermore, ho microscopic properties influence the macroscopic properties through numerical analyses based on the bonded particle m the microscopic properties are originated from the bonded st stiffness, were thus conducted to systematic study the micro mechanism. After a series of tests and comparisons to the a sandstone, a numerical model comprised of three types of p particles GP, matrix particles MP and porous matrix particles accordingly proposed to represent the sandstone, and it sho capability in simulating/predicting the macroscopic mechanic sandstone.
KEYWORDS: [5112] PHYSICAL PROPERTIES OF ROCKS Microstructure, [5114] PHYSICAL PROPERTIES OF ROCK and porosity.
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