Water-conservancy-project high-water-head tunnel spillway bottom plate concrete crack defect inhibitor and preparation method thereof
A technology of high water head and flood discharge tunnel, applied in the field of admixtures for suppressing cracks and concrete crack defect inhibitors, to achieve the effect of reducing cracks and penetrating cracks, uniform concrete structure, and reducing surface defects
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Embodiment 1
[0024] The concrete crack defect inhibitor for the floor of the hydraulic high-head flood discharge tunnel in this embodiment has the following weight components: special plastic expansion agent for cement-based grouting material: 0.3%; polysiloxane powder: 0.03%; calcium oxide clinker and gypsum composite Expansion agent: 45.0%; pozzolan ultrafine aluminosilicate mineral powder: 54.67%, the above components are accurately weighed by weight percentage, and the present invention is prepared according to the process described in Example 7.
Embodiment 2
[0026] The concrete crack defect inhibitor for the floor of the hydraulic high-head flood discharge tunnel in this embodiment has the following weight components: special plastic expansion agent for cement-based grouting material: 0.5%; polysiloxane powder: 0.05%; calcium sulfoaluminate-calcium oxide Clinker and gypsum composite expansion agent: 45.0%; pozzolan ultrafine aluminosilicate mineral powder: 49.45%, the above components are accurately weighed by weight percentage, and the present invention is prepared according to the process described in Example 7.
Embodiment 3
[0028] The concrete crack defect inhibitor for the floor of the hydraulic high-head flood discharge tunnel in this embodiment has the following weight components: plastic expansion agent for cement-based grouting material: 0.3%; polysiloxane powder: 0.05%; R-type magnesium oxide-calcium oxide Clinker and gypsum composite expansion agent: 50.0%; pozzolan ultrafine aluminosilicate mineral powder: 49.47%, the above components are accurately weighed by weight percentage, and the present invention is prepared according to the process described in Example 7.
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