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Engineering Characteristics of Light-weight Foamed CLSM using Coal Ash According to Final Mixing Time and Dilution Ratio
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lee, Jonghwi Na, Jeong Hum Lee, Ching Kwang Chun, Byung Sik |
| Copyright Year | 2012 |
| Abstract | CLSM (Controlled Low Strength Material) using coal ash, which has the advantages of self-leveling, self-compacting, flowability, easy re-excavation, has been developed. In this study, CLSM additionally mixed with foaming agent for structural backfill material, aimed at lightness of materials, was developed called light-weight foamed CLSM. As the basic study of this material, to determine the optimum final mixing time and dilution ratio of existing light-weight foamed CLSM, flow, slurry unit weight and unconfined compressive strength test according to each impact factor were performed at the standard mix proportion. As the results of tests, CASE N (Final mixing time 4 min, dilution ratio 2%), CASE O (Final mixing time 3 min, foam agents ratio 3%, dilution ratio 2%) were satisfied with the standard of flow test (above 20cm), slurry unit weight test (12~15 ) and unconfined compressive strength test (800 kPa~1200 kPa). These results will indicate the standard optimum final mixing time and dilution ratio of light-weight foamed CLSM for structural backfill. |
| Starting Page | 17 |
| Ending Page | 25 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| Volume Number | 32 |
| Alternate Webpage(s) | http://legacy.isope.org/publications/proceedings/ISOPE/ISOPE%202012/data/papers/vol2/2012-TPC-475Kim.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
