Preparation of compositionally graded hollow spherical particles with water-retaining ability for soil improvement
Project/Area Number |
24560893
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Material processing/treatments
|
Research Institution | Nihon University |
Principal Investigator |
|
Project Period (FY) |
2012-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | 噴霧乾燥 / アパタイト / 組成傾斜 / マイクロカプセル / 保水材 / 組成傾斜型粒子 / 噴霧乾燥法 / 耐水性 / 土壌改良剤 / 組成傾斜粒子 / 水酸アパタイト / 土壌改質剤 |
Outline of Final Research Achievements |
In the spray-drying method, an aqueous solution containing dissolved materials is sprayed inside a furnace so that the materials undergo instant drying to form a powder. If two materials with different solubility exist in the solution, the particle wall is formed by depositing into low solubility material first, then, high solubility material deposited in the inner side continuously. In the present work, I could prepare the hollow spherical particles with size of 1-5 um. The particles were hydroxyapatite (outer surface)/silica (inner surface) compositionally graded hollow spherical particles. The compressive strength of these particles were maximum 17 MPa. The particles indicates a water resistance, was able to hold the water inside. Moreover, it could be suppressed soil-drying by adding the particles into the soil.
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Report
(5 results)
Research Products
(16 results)