A kind of recycled concrete and its preparation method
A technology of recycled concrete and recycled aggregate, applied in the field of concrete, can solve the problems of reduced impermeability, many edges and corners, and high water absorption of recycled concrete, and achieve the effects of improving compressive strength, reducing porosity, and reducing porosity.
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Embodiment 1
[0042] A kind of recycled concrete, the raw material comprises the following components by weight:
[0043] 56 parts of recycled aggregate, 29 parts of new aggregate, 20 parts of Portland cement, 23 parts of coating agent; 20 parts of anti-cracking filler, 84 parts of water.
[0044] in:
[0045] The new aggregate is basalt crushed stone and ordinary river sand in equal parts by weight; basalt crushed stone with a particle size of 5-25mm continuously graded basalt crushed stone; the fineness modulus of ordinary river sand is 2.6, and the apparent density is 2670kg / m3; the particle size of recycled aggregate is 20mm.
[0046] The anti-cracking filler includes the following components by weight: 15 parts of carboxymethyl cellulose, 23 parts of glass fiber powder, 18 parts of sand and gravel; the sand and gravel are mixed sand and gravel of 100 mesh and 210 mesh, 100 mesh gravel and 210 mesh gravel The dosage ratio is 5:1.
[0047] The coating agent includes the following com...
Embodiment 2
[0055] A kind of recycled concrete, the raw material comprises the following components by weight:
[0056] 66 parts of recycled aggregate, 38 parts of new aggregate, 25 parts of Portland cement, 20 parts of coating agent; 25 parts of anti-crack filler, 121 parts of water.
[0057] in:
[0058] The new aggregate is basalt crushed stone and ordinary river sand in equal parts by weight; basalt crushed stone with a particle size of 5-25mm continuously graded basalt crushed stone; the fineness modulus of ordinary river sand is 2.6, and the apparent density is 2670kg / m3; the particle size of recycled aggregate is 20mm.
[0059] The anti-cracking filler includes the following components by weight: 15 parts of carboxymethyl cellulose, 23 parts of glass fiber powder, 25 parts of sand and gravel; the sand and gravel are mixed sand and gravel of 120 mesh and 250 mesh, 120 mesh gravel and 250 mesh gravel The dosage ratio is (5-7):1.
[0060] The coating agent includes the following c...
Embodiment 3
[0068] A kind of recycled concrete, the raw material comprises the following components by weight:
[0069] Raw materials include the following components by weight:
[0070] 68 parts of recycled aggregate, 35 parts of new aggregate, 29 parts of Portland cement, 19 parts of coating agent, 26 parts of anti-crack filler, and 118 parts of water.
[0071] in:
[0072] The new aggregate is basalt crushed stone and ordinary river sand in equal parts by weight; basalt crushed stone with a particle size of 5-25mm continuously graded basalt crushed stone; the fineness modulus of ordinary river sand is 2.6, and the apparent density is 2670kg / m3; the particle size of recycled aggregate is 20mm.
[0073] The anti-cracking filler includes the following components by weight: 20 parts of carboxymethyl cellulose, 36 parts of glass fiber powder, 21 parts of sand and gravel; the sand and gravel are mixed sand and gravel of 110 mesh and 260 mesh, 110 mesh gravel and 260 mesh gravel The dosag...
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