A kind of modified mixed Portland cement and preparation method thereof
A Portland cement and modification technology, applied in cement production and other directions, can solve problems affecting project quality, energy, resource waste, isolation, etc., and achieve the effects of facilitating construction, reducing water consumption, and improving fluidity
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[0044] Example 1:
[0045] A 42.5 modified mixed Portland cement, the raw material ratio of each component is: clinker 78.5%, gypsum 6.0%, limestone 5.0%, granulated blast furnace slag 7.48%, activator 0.02% and mineral colorant (coal gangue) 3.0%. The activator uses 2,5-dihydroxyethylpiperazine mother liquor, and the component materials meet the relevant standards and the aforementioned requirements.
[0046] The preparation method of the 42.5 modified mixed Portland cement, the specific steps are as follows:
[0047] Step 1, select the above-mentioned raw materials, take the pre-homogenization measures of flat laying and vertical cutting and matching use, and store them in a clinker warehouse, a gypsum warehouse, and multiple warehouses of different types of mixed materials, and the activator is stored in a storage tank for standby;
[0048] In step 2, the mixed grinding method A is adopted. After the clinker, gypsum, limestone, granulated blast furnace slag, activator and...
Example Embodiment
[0050] Example 2:
[0051] A 32.5 modified mixed Portland cement, the raw material ratio of each component is: clinker 55.0%, gypsum 5.0%, limestone 10.0%, granulated blast furnace slag 5.48%, fly ash 10.5%, pozzolanic mixed material 9.0% %, coal gangue (mineral colorant) 3.0%, activator 0.02% and composite water reducing agent 2.0%. The activator uses 2,5-dihydroxyethylpiperazine mother liquor, the composite water reducing agent uses polycarboxylate powder, and the components and raw materials meet the relevant standards and the aforementioned requirements.
[0052] The preparation method of the 32.5 modified mixed Portland cement, the specific steps are as follows:
[0053] Step 1, select the above-mentioned raw materials, take the pre-homogenization measures of flat laying and vertical cutting and matching use, and put them into clinker warehouses, gypsum warehouses, and multiple warehouses of different types of mixed materials, respectively. Modified components and activa...
Example Embodiment
[0057] Example 3:
[0058] A 32.5 modified mixed Portland cement, the raw material ratio of each component is: clinker 55.0%, gypsum 5.0%, limestone 10.0%, granulated blast furnace slag 5.5%, fly ash 9.3%, slag (pozzolanic Mixed materials) 8.0%, carbon black (mineral colorant) 3.0%, activator 0.10%, cellulose ether 0.1% and dispersible polymer powder 4.0%. The activator used is compounded from 2,5-dihydroxyethylpiperazine mother liquor and tetrahydroxyethylethylenediamine, the cellulose ether uses hydroxypropyl methylcellulose ether, and the redispersible latex powder uses ethylene- Vinyl acetate copolymer. The components and raw materials meet the relevant standards and the aforementioned requirements.
[0059] The preparation method of the 32.5 modified mixed Portland cement, the specific steps are as follows:
[0060] Step 1, select the above-mentioned raw materials, take the pre-homogenization measures of flat laying and vertical cutting and matching use, and put them int...
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