期刊
MARINE GEORESOURCES & GEOTECHNOLOGY
卷 31, 期 1, 页码 71-85出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/1064119X.2012.667867
关键词
bottom ash; dredged soil; mechanical property; recycling; rubber
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2011-0007023]
- National Research Foundation of Korea [2011-0007023] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This paper investigated the effects of including crumb rubber and bottom ash on the geotechnical characteristics of composite geomaterial (CGM) in which dredged soils, crumb rubber, and bottom ash are reused for recycling. Several series of test specimens were prepared at five different percentages of rubber content and three different percentages of bottom ash content. The mixed soil specimens were subjected to unconfined compression, elastic wave, and California bearing ratio (CBR) tests to investigate their strength, stiffness, small strain properties, and CBR values. The test results indicated that rubber and bottom ash affected engineering properties of the CGM. The addition of bottom ash to the soil mixture contributed to increases in unit weight, unconfined compressive strength, secant modulus, shear modulus, and CBR at a given rubber content. However, increasing rubber content resulted in decreased bulk unit weight, unconfined compressive strength, elastic wave velocity, and CBR value of CGM. The results of elastic wave tests indicated that higher rubber content resulted in reduced elastic wave velocity and a lower shear modulus. Of the samples tested in this study, those with lower rubber content exhibited sand-like behavior and a higher shear modulus. Samples with a higher rubber content exhibited rubber-like behavior and a lower shear modulus. The CBR of CGM with bottom ash was much greater than that of CGM without bottom ash.
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