Method for inducing calcium carbonate precipitation to uniformly cover recycled coarse aggregate by bacillus pasteurii DSM33
The invention provides a method for inducing calcium carbonate precipitation to uniformly cover recycled coarse aggregate by bacillus pasteurii DSM33. The method comprises the steps of firstly, preparing a microorganism culture medium and a calcium source solution; secondly, drying the recycled coar...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a method for inducing calcium carbonate precipitation to uniformly cover recycled coarse aggregate by bacillus pasteurii DSM33. The method comprises the steps of firstly, preparing a microorganism culture medium and a calcium source solution; secondly, drying the recycled coarse aggregate at low temperature, and soaking the recycled coarse aggregate in the microorganism culture medium to enable the recycled coarse aggregate to absorb enough microorganisms; thirdly, taking out the recycled coarse aggregate from the microorganism culture medium, and putting the recycled coarse aggregate into a sterile precipitation culture medium; then, equally dividing the solution containing the calcium source into a plurality of parts, and gradually adding the equally divided calcium source solution into the precipitation culture medium day by day; and finally, taking out the recycled coarse aggregate, and placing the recycled coarse aggregate in the atmosphere for air drying treatment. The method is c |
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