A kind of high-strength and high-corrosion-resistant composite gel material and its preparation method
A composite cementitious material and high-strength technology, which is applied in the field of building technology materials, can solve the problems of inability to large-scale renovation, corrosion of cement materials, poor corrosion resistance, etc., and achieve strong scalability, good wear resistance and corrosion resistance, The effect of reducing porosity
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[0031] Please refer to figure 1 , a preparation method of a high-strength and high-corrosion-resistant composite cementitious material, comprising the following steps:
[0032] S1: Weigh the powders of ordinary Portland cement, sulphoaluminate cement, sepiolite, wollastonite, diatomite, calcined layered double metal hydroxide and quartz sand according to the above weight parts, and mix Uniformly, preferably stirring for 3 minutes;
[0033] S2: Add water accounting for 20% to 30% of the mass of the powder, and stir in a mixer at high speed until uniformly mixed, preferably for 3 minutes, to obtain a high-strength and high-corrosion-resistant composite gelled material.
Embodiment 1
[0035] Take 10 parts of ordinary portland cement, 10 parts of sulphoaluminate cement, 5 parts of sepiolite, 5 parts of wollastonite, 10 parts of diatomite, 5 parts of calcined layered double metal hydroxide and quartz sand 300 servings of powder. Fully mix the above powder evenly for 3 minutes; add water accounting for 20% of the mass of the powder to the above uniformly mixed powder and mix evenly for 3 minutes to obtain a high-strength and high-corrosion-resistant composite gelled material.
[0036] The present invention tests the composite gelled material prepared in Example 1, and the results show that the final setting time is less than 95 minutes; the 24-hour flexural strength is 3.2MPa, the compressive strength is 33MPa, and the tensile bond strength is 1.6MPa. After 28 days of underground sewage corrosion, there is no shrinkage and no cracking.
Embodiment 2
[0038] Take 20 parts of ordinary portland cement, 20 parts of sulphoaluminate cement, 15 parts of sepiolite, 15 parts of wollastonite, 30 parts of diatomite, 10 parts of calcined layered double metal hydroxide and quartz sand 200 servings of powder. Fully mix the above powders uniformly for 3 minutes; add water accounting for 30% of the mass of the powders to the above uniformly mixed powders and mix uniformly for 3 minutes to obtain a high-strength and high-corrosion-resistant composite gelled material.
[0039] The present invention tests the composite gelling material prepared in Example 2, and the results show that the final setting time is less than 50 minutes; the 24-hour flexural strength is 3.5MPa, the compressive strength is 33MPa, and the tensile bond strength is 1.9MPa. After 28 days of underground sewage corrosion, there is no shrinkage and no cracking.
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