Recycled concrete commercial mortar
A technology of recycled concrete and commercial mortar, which is applied in the field of cement-based materials, can solve the environmental protection pressure of power companies and the shortage of resources in building materials companies. To alleviate problems such as adjustable setting time, good environmental coordination, and good workability
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[0021] Example one
[0022] The following weight percentage components are selected to prepare recycled concrete commercial mortar: recycled concrete powder 15%; recycled concrete fine aggregate 60%; desulfurized gypsum 7%; alkali slag 10%; water washing slurry 3%; Portland cement clinker 3% ; Aluminum slag 1%; admixture (sodium silicate) 1%.
[0023] Said recycled concrete fine powder is produced during the production process of recycled concrete coarse aggregate with a particle size of less than 0.23mm, which is activated and ball milled to a specific surface area greater than 450mm 2 / kg.
[0024] The specific steps of the activation treatment method of recycled concrete powder include:
[0025] (1) Recycled concrete fine powder with a particle size of less than 0.23mm is mixed with lime for mechanical activation, namely mechanical grinding. The lime content is 5% to 15% of the total weight of the mixture, and the rest is recycled concrete fine powder, which is ground at room t...
Example Embodiment
[0034] Example two
[0035] The following weight percentage components are selected to prepare recycled concrete commercial mortar: recycled concrete powder 15%; recycled concrete fine aggregate 50%; desulfurized gypsum 8%; alkali residue 15%; water washing slurry 4%; Portland cement clinker 4% ; Aluminum slag 3%; admixture (a mixture of sodium silicate and sulphoaluminate) 1%.
[0036] Said recycled concrete fine powder is produced in the production process of recycled concrete coarse aggregate with less than 0.23mm granules which are activated and ball milled to a specific surface area greater than 450mm 2 / kg.
[0037] The specific steps of the activation treatment method of recycled concrete powder include:
[0038] (1) Recycled concrete fine powder with a particle size of less than 0.23mm is mixed with lime for mechanical activation, namely mechanical grinding. The lime content is 5% to 15% of the total weight of the mixture, and the rest is recycled concrete fine powder, whi...
Example Embodiment
[0046] Example three
[0047] The following weight percentage components are selected to prepare recycled concrete commercial mortar: recycled concrete powder 20%; recycled concrete fine aggregate 52%; desulfurized gypsum 10%; alkali slag 10%; water washing slurry 3%; Portland cement clinker 3% ; Aluminum slag 1.5%; admixture (sulfoaluminate) 0.5%.
[0048] Said recycled concrete fine powder is produced in the production process of recycled concrete coarse aggregate with less than 0.23mm granules which are activated and ball milled to a specific surface area greater than 450mm 2 / kg.
[0049] The specific steps of the activation treatment method of recycled concrete powder include:
[0050] (1) Recycled concrete fine powder with a particle size of less than 0.23mm is mixed with lime for mechanical activation, namely mechanical grinding. The lime content is 5% to 15% of the total weight of the mixture, and the rest is recycled concrete fine powder, which is ground at room temperatu...
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