A kind of electromagnetic controlled release microcapsule/steel fiber self-healing concrete and its preparation method
A technology of microcapsules and steel fibers, applied in the field of concrete, can solve the problems of limiting the damage of microcapsules to concrete and the repairing effect of microcracks, low content of magnetic iron powder, restricting practical application, etc., so as to improve the repairing effect, improve the thermal conductivity, The effect of speeding up the melting
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Embodiment 1
[0031] An electromagnetic controlled release microcapsule / steel fiber self-repairing concrete is prepared as follows:
[0032] (1) Take by weighing 100 parts of PO42.5 ordinary portland cement, 0 parts of fly ash, 180 parts of river sand, 320 parts of coarse aggregate, 3 parts of electromagnetic controlled release microcapsules, 22.5 parts of surface-treated steel fibers, 0.7 parts of polycarboxylate superplasticizer, and 32 parts of water;
[0033] (2) Add the weighed cement, fly ash, fine aggregate, coarse aggregate, electromagnetic controlled release microcapsules, and surface-treated steel fibers into the concrete mixer and stir for 2 minutes, then add water and water reducer, and continue stirring for 3 minutes to make it evenly mixed, and the electromagnetic controlled-release microcapsule / steel fiber self-healing concrete is prepared.
[0034] The electromagnetic controlled-release microcapsules / steel fiber self-repairing concrete prepared in this example was poured in...
Embodiment 2
[0049] An electromagnetic controlled release microcapsule / steel fiber self-repairing concrete is prepared as follows:
[0050] (1) Weigh 100 parts of PO42.5 ordinary Portland cement, 10 parts of fly ash, 160 parts of river sand, 330 parts of coarse aggregate, 4 parts of electromagnetic controlled release microcapsules, Surface-treated steel fiber 30 parts, polycarboxylate superplasticizer 0.8 parts, water 33 parts;
[0051] (2) Add the weighed cement, fly ash, fine aggregate, coarse aggregate, electromagnetic controlled release microcapsules, and surface-treated steel fibers into the concrete mixer and stir for 2 minutes, then add water and water reducer, and continue stirring for 3 minutes to make it evenly mixed, and the electromagnetic controlled-release microcapsule / steel fiber self-healing concrete is prepared.
[0052] The electromagnetic controlled-release microcapsules / steel fiber self-repairing concrete prepared in this example was poured into a mold of 100mm×100mm×1...
Embodiment 3
[0057] An electromagnetic controlled release microcapsule / steel fiber self-repairing concrete is prepared as follows:
[0058] (1) Weigh 100 parts of PO52.5 ordinary portland cement, 20 parts of fly ash, 200 parts of river sand, 350 parts of coarse aggregate, 5 parts of electromagnetic controlled release microcapsules, Surface-treated steel fiber 37.5 parts, polycarboxylate superplasticizer 1.0 part, water 35 parts;
[0059] (2) Add the weighed cement, fly ash, fine aggregate, coarse aggregate, electromagnetic controlled release microcapsules, and surface-treated steel fibers into the concrete mixer and stir for 2 minutes, then add water and water reducer, and continue stirring for 3 minutes to make it evenly mixed, and the electromagnetic controlled-release microcapsule / steel fiber self-healing concrete is prepared.
[0060] The electromagnetic controlled-release microcapsules / steel fiber self-repairing concrete prepared in this example was poured into a mold of 100mm×100mm×...
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Abstract
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