Microorganism self-repairing concrete crack repairing condition observation method
A microbial and self-repairing technology, which is applied in the direction of analyzing materials through chemical reactions and observing the influence of chemical indicators, can solve the problems of not being able to display the actual repair of microbial self-repairing concrete cracks, and achieve Improve the effect of color distinction
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Embodiment 1
[0030] Sample: The size of the concrete specimen is 100mm×100mm×100mm, the water-cement ratio is 0.50, and the sand rate is 36%. Carbonic anhydrase is added in the form of bacterial powder to replace the sand, and the replacement rate is 5%, and the standard condition is maintained for 28 days.
[0031] Equipment and test conditions: Take out the microbial self-repairing concrete test block that has been cured for 28 days under standard curing conditions, and load it continuously and evenly at a speed of 0.02MPa / s with a universal testing machine. When the upper platen is close to the test piece, adjust the ball The seat balances the contact, and stops loading when microscopic cracks appear in the microbial self-healing concrete. Put the microbial self-healing concrete test block with fine cracks prepared into the standard curing room for 28 days of curing. Take the test piece out of the standard curing room, add a concentration of 2.5g / 100ml (0.01mol / L) copper sulfate pentahy...
Embodiment 2
[0034] The size of the sample concrete specimen is 100mm×100mm×100mm, the water-cement ratio is 0.50, and the sand rate is 36%. Carbonic anhydrase is added in the form of bacterial powder to replace the sand, and the replacement rate is 5%, and the standard condition is maintained for 28 days.
[0035]Equipment and test conditions: Take out the microbial self-repairing concrete test block that has been cured for 28 days under standard curing conditions, and load it continuously and evenly at a speed of 0.02MPa / s with a universal testing machine. When the upper platen is close to the test piece, adjust the ball The seat balances the contact, and stops loading when microscopic cracks appear in the microbial self-healing concrete. Put the microbial self-healing concrete test block with fine cracks prepared into the standard curing room for 28 days of curing. Take the test piece out of the standard curing room, add a concentration of 3g / 100ml (0.012mol / L) copper sulfate pentahydra...
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