Cement modifier as well as preparation method and application of cement modifier
A cement modifier and solubility technology, applied in the field of cement modifiers, can solve the problems of easily damaged membranes, high cost, and affecting service life, etc., achieve strong chemical corrosion resistance and bonding strength, low production cost, and solve The effect of treatment
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[0034] The preparation method of the cement modifier of the present invention is simple, specifically: mix the A component and the B component according to the stated proportion, and use a mill to grind the resulting mixture to a fine powder with a particle size of 200-800 meshes to obtain cement modifier.
[0035] The mill equipment used may be, but not limited to, a ball mill, a vertical mill, a roller mill, a vibration mill, or a Raymond mill.
[0036] The use method of the cement modifier of the present invention is also very simple, only need to add 10% of Portland cement based on the total weight of Portland cement on the basis of mixing the Portland cement with sand and stones in the conventional ratio when preparing concrete. -50% cement modifier is enough, and the prepared concrete can maintain the same strength for a long time in seawater, salt lake water, salt marsh water or industrial wastewater.
Embodiment 1
[0038] 1. Preparation of cement modifier
[0039] 50kg of barium sulfide industrial waste (barium sulfide content is 1% by weight), 5kg of barite and coal powder calcined at 1100°C (barium sulfide content is 40% by weight) mixed with 30kg of natural zeolite, with a ball mill Grind into a 400-mesh fine powder to obtain a cement modifier.
[0040] 2. Prepare two concrete blocks of 25cm×15cm×10cm according to the following formula:
[0041] a. 3kg river sand, 2kg gravel, 2kg No. 400 portland cement
[0042] b. 3kg river sand, 2kg gravel, 2kg No. 400 Portland cement, 0.5kg cement modifier
[0043] 3. Prepare 11kg of experimental solution according to the following formula:
[0044] 10kg water, 500g sodium sulfate, 300g magnesium sulfate, 200g magnesium chloride
[0045] 4. Performance testing
[0046] Put two concrete blocks into the test solution at the same time, take them out after soaking for 1 week, put them in humid air, observe the effect after 1 month, the results are...
Embodiment 2
[0050] 1. Preparation of cement modifier
[0051] 80kg of precipitated barium sulfate industrial waste (the content of barium sulfide is 1.2% by weight) is mixed with 20kg of natural zeolite and 20kg of medical stone, and the resulting mixture is ground into a 350-mesh fine powder with a vibration mill to obtain a cement modifier.
[0052] 2. Prepare two concrete blocks of 25cm×15cm×10cm according to the following proportions:
[0053] a. 3kg river sand, 2kg gravel, 2kg Portland cement No. 250
[0054] b. 3kg of river sand, 2kg of gravel, 2kg of No. 250 Portland cement, and 0.8kg of cement modifier.
[0055] 3. By the same method as in Example 1, the test solution was prepared and the performance of the cement was tested. The results are shown in Table 2.
[0056] Table 2
[0057]
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