A kind of self-healing material and its preparation method and application
A technology of self-repairing material and composite powder, which is applied in the field of concrete materials, can solve the problems that self-repairing materials cannot achieve crack repairing effect, and achieve high practical value and promotion value, good repairing effect and fast repairing speed
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Embodiment 1
[0040] An embodiment of the present invention provides a microcrack repairing agent for cement-based materials for construction. The raw materials include the following components in parts by mass:
[0041] 15 parts of pumice powder, 55 parts of expansion component, 5 parts of lithium carbonate, 15 parts of potassium carbonate, 10 parts of PVB.
[0042] The preparation method of the above-mentioned cement-based material microcrack repairing agent for construction comprises the following steps:
[0043] Step 1. Weigh each component according to the designed ratio, and mix the weighed reinforcement component and expansion component uniformly to obtain composite powder;
[0044] Step 2. Stir the composite powder and pumice powder for 3 hours under the condition of 700r / min to obtain a primary coating repair powder;
[0045] Step 3: adding the weighed polyvinyl butyral into ethanol, heating to 60°C for 30 minutes to obtain a slow-release solution;
[0046] Step 4. Stir the primary...
Embodiment 2
[0048] An embodiment of the present invention provides a microcrack repairing agent for cement-based materials for construction. The raw materials include the following components in parts by mass:
[0049] 10 parts of pumice powder, 40 parts of expansion component, 6 parts of lithium carbonate, 24 parts of potassium bicarbonate, 20 parts of PVB.
[0050] The preparation method of the above-mentioned cement-based material microcrack repairing agent for construction comprises the following steps:
[0051] Step 1. Weigh each component according to the designed ratio, and mix the weighed reinforcement component and expansion component uniformly to obtain composite powder;
[0052] Step 2. Stir the composite powder and pumice powder for 2 hours under the condition of 900 r / min to obtain a primary coating repair powder;
[0053] Step 3: Add the weighed polyvinyl butyral into ethanol, heat to 65°C for 30 minutes to obtain a slow-release solution;
[0054] Step 4. Stir the primary ...
Embodiment 3
[0056] An embodiment of the present invention provides a microcrack repairing agent for cement-based materials for construction. The raw materials include the following components in parts by mass:
[0057] 10 parts of pumice powder, 50 parts of expansion component, 20 parts of potassium carbonate, 10 parts of potassium bicarbonate, 10 parts of PVB.
[0058] The preparation method of the above-mentioned cement-based material microcrack repairing agent for construction comprises the following steps:
[0059] Step 1. Weigh each component according to the designed ratio, and mix the weighed reinforcement component and expansion component uniformly to obtain composite powder;
[0060] Step 2. Stir the composite powder and pumice powder for 2 hours under the condition of 800r / min to obtain a primary coating repair powder;
[0061] Step 3: Add the weighed polyvinyl butyral into ethanol, heat to 62°C for 30 minutes to obtain a slow-release solution;
[0062] Step 4. Stir the primar...
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