Method for extracting chloride ions in concrete members
A technology of concrete and chloride ions, applied in building components, building insulation materials, etc., can solve the problems of late maintenance safety hazards, a lot of labor, low efficiency and so on
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Embodiment 1
[0057] A method for extracting chloride ions in concrete components, the method comprises the following steps:
[0058] (1) Use the FH-B2500 bridge and tunnel maintenance vehicle to groove the areas of concrete components with serious chloride ion content (>0.05mol / L);
[0059] (2) Insert the alkaline active zinc plate into the slot and connect it with the steel bar. The alkaline active zinc plate used is a commercially available Galvashield XP4 zinc plate;
[0060] (3) Use inorganic mortar to fill up the slots on the concrete components and restore the shape of the concrete components. Wherein, the inorganic mortar used is composed of the following components and parts by weight: water reducer polycarboxylate 0.8, hydroxypropyl 0.45 base methyl cellulose, 30 kaolin, 800 No. 5 silica sand with a diameter of 16-32 mm, 100 No. 7 silica sand with a diameter of 10-20 mesh, and 700 425 cement with a compressive strength of 32.5 MPa in 28 days.
Embodiment 2
[0062] A method for extracting chloride ions in concrete components, the method comprises the following steps:
[0063] (1) Drill holes for concrete components with average chloride ion content (<0.05mol / L);
[0064] (2) Insert the alkaline active zinc plate into the opening and connect it to the steel bar. The alkaline active zinc plate used is a commercially available Galvashield XP4 zinc plate;
[0065] (3) Utilize inorganic mortar to fill up the grooves on the concrete components and restore the shape structure of the concrete components, wherein the inorganic mortar used is composed of the following components and parts by weight: water reducer polycarboxylate 1, hydroxypropyl 0.6 base methyl cellulose, 40 kaolin, 1000 No. 5 silica sand with a diameter of 16-32 mm, 200 No. 7 silica sand with a diameter of 10-20 mesh, and 800 425 cement with a compressive strength of 32.5 MPa in 28 days.
Embodiment 3
[0067] A method for extracting chloride ions in concrete components, the method comprises the following steps:
[0068] (1) For concrete components used in seawater, directly bind the alkaline active zinc plate with the steel bar and then pour the concrete;
[0069] (3) It is enough to use inorganic mortar to carry out surface treatment on concrete components, wherein the inorganic mortar is composed of the following components and parts by weight: water reducer polycarboxylate 1.2, hydroxypropyl methylcellulose 0.85, kaolin 49, diameter 1200 for No. 5 silica sand with a diameter of 16-32mm, 300 for No. 7 silica sand with a diameter of 10-20 mesh, and 980 for 425 cement with a compressive strength of 32.5MPa in 28 days.
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