| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
|
|---|
| Outline of Final Research Achievements |
The filler made of calcium carbonate precipitated by the reaction of carbon dioxide with a calcium source due to the metabolism of microorganisms is called bio-grout. For practical application of repair method by bio-grout, the purpose of this research is to find out the conditions of high precipitation rate of calcium carbonate and to study the method of filling in the places where cracks and water leaks.
Although the precipitation rate of calcium carbonate changes depending on the composition of bio-grout and its concentration and temperature, It became clear that that calcium carbonate can maintain a high precipitation rate when the pH of bio-grout does not fall below 7.5 after 24 hours by properly adjusting the alkaline buffer action. Moreover, water leakage can be stopped by injecting bio-grout repeatedly into a crack.
|
