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Title |
Evaluation of Properties of Artificial Soil Aggregate Based on Ground Granulated Blast-Furnace Slag According to Unit Binder Content
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Authors |
문주현(Ju-Hyun Mun) ; 심재일(Jae-Il Sim) ; 윤인구(In-Gu Yun) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2016.20.5.085 |
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Keywords |
Artificial soil aggregates ; Foamed concrete ; Mechanical property ; Physiochemical property ; Unit binder contents |
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Abstract |
The eight mixes and artificial soil aggregates were prepared for evaluating the practical application of lightweight foamed concrete as soil aggregates. The main parameter was unit binder content ranged between from 100 to 800 kg/m3. In lightweight foamed concrete, flow, slurry and dried density, and compressive strength at different ages were measured. In Artificial soil aggregates crushed from lightweight foamed concrete, particle size distribution, pH, coefficient of permeability, cation exchange capacity(CEC), and ratio of carbon to nitrogen(ratio of C/N), were measured. The test results showed that flow, slurry and dried density, and compressive strength at different ages of lightweight foamed concrete increased with the increasing of unit binder content. Compressive strength at age of 28, of lightweight foamed concrete with unit binder of more than 500 kg/m3, was more than 4 MPa. The ammonium phosphate immersion time of more than age of 3, was effective to decrease pH of artificial soil aggregates. In addition, artificial soil aggregates was evaluated as high class in terms of cation exchange capacity(CEC), while satisfied with value of ratio of carbon to nitrogen(ratio of C/N) recommended by landscape specification.
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