Preparation method of cement expansive material
A technology of expansion agent and concrete, which is applied in the field of preparation of concrete expansion agent, can solve problems such as poor anti-crack performance, achieve the effect of improving anti-cracking and waterproofing effects, improving waterproof and anti-cracking ability, and improving mechanical properties
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example 1
[0023]Mix (N-amidino) dodecyl acrylamide and polyethylene glycol derivatives in a mass ratio of 1:1 in a flask, and add 0.2 times the weight of polyethylene glycol derivatives to the flask to p-dichlorobenzene and ferrocene with 0.12 times the mass of polyethylene glycol derivatives, after stirring and mixing for 75 minutes at a temperature of 35 ° C and a rotating speed of 250 r / min, a treatment agent was obtained; the pretreated zeolite and saturated calcium bicarbonate solution were mixed by mass Mix at a ratio of 1:30, stir and mix for 60 minutes at a temperature of 60°C and a speed of 280r / min to obtain a mixture, cool the mixture to 8°C, filter to obtain a filter cake, move the filter cake into a drying oven, and dry at temperature After air drying at 15°C for 2 hours, the 1-time treatment zeolite is obtained; the 1-time treatment zeolite and the treatment agent are mixed in a beaker at a mass ratio of 1:6, soaked at room temperature for 80 minutes, and then filtered to o...
example 2
[0025] Mix (N-amidino) dodecyl acrylamide and polyethylene glycol derivatives in a mass ratio of 1:1 in a flask, and add 0.2 times the weight of polyethylene glycol derivatives to the flask to p-dichlorobenzene Mix ferrocene with 0.12 times the mass of polyethylene glycol derivatives at a temperature of 35°C and a rotation speed of 250r / min for 75 minutes to obtain a treatment agent; the pretreatment zeolite and treatment agent are in a mass ratio of 1: 6 Mix it in a beaker, soak it at room temperature for 80 minutes, and then filter to get the first-time treatment zeolite. Mix the first-time treatment zeolite and paraffin wax at a mass ratio of 1:4, and set the temperature at 65°C and the rotation speed at 250r / min. Under certain conditions, after stirring and mixing for 25 minutes, a zeolite paraffin mixture was obtained, and the zeolite paraffin mixture was frozen and pulverized to obtain a modified zeolite; the sepiolite and dimethyl sulfoxide were mixed in a mass ratio of ...
example 3
[0027] Mix the pretreated zeolite and saturated calcium bicarbonate solution at a mass ratio of 1:30, stir and mix for 60 minutes at a temperature of 60°C and a rotational speed of 280r / min to obtain a mixture, cool the mixture to 8°C, and filter to obtain Filter cake, move the filter cake into a drying oven, and dry it at a temperature of 15°C for 2 hours to obtain the first-time treatment zeolite; mix the first-time treatment zeolite and paraffin at a mass ratio of 1:4, at a temperature of 65°C, the speed Under the condition of 250r / min, after stirring and mixing for 25min, the zeolite paraffin wax mixture was obtained, and the zeolite paraffin wax mixture was frozen and pulverized to obtain modified zeolite; the sepiolite was moved into a pulverizer and crushed through a 260-mesh sieve to obtain refined sepiolite , mix refined sepiolite and paraffin wax at a mass ratio of 1:5, and stir and mix for 40 minutes at a temperature of 65°C and a rotational speed of 250r / min to obta...
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