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Freeze-thaw resistant recycled concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses freeze-thaw resistant recycled concrete and a preparation method thereof. The freeze-thaw resistant recycled concrete is prepared from the following raw materials in parts by weight: 300 to 400 parts of cement, 250 to 300 parts of modified recycled coarse aggregate, 150 to 200 parts of superfine slag powder, 100 to 150 parts of water, 150 to 200 parts of fly ash, 100 to 150 parts of silica fume, 20 to 30 parts of an air entraining agent, 20 to 25 parts of a water reducing agent and 20 to 30 parts of polyacrylamide. The preparation method comprises the following steps of: uniformly stirring the cement, the modified recycled coarse aggregate, the superfine slag powder, the fly ash, the silica fume, the air entraining agent, the water reducing agent and the water, adding the uniformly mixed modified recycled coarse aggregate and polyacrylamide, and uniformly stirring to obtain the recycled concrete. According to the recycled concrete, the porosity of the recycled concrete can be reduced, the water absorption is reduced, and the freeze-thaw resistance of the recycled concrete is improved.
本申请涉及混凝土领域，具体公开了一种抗冻融性再生混凝土及其制备方法。一种抗冻融性再生混凝土包括如下重量份数的原料：水泥300‑400份、改性再生粗骨料250‑300份、矿渣微粉150‑200份、水100‑150份、粉煤灰150‑200份、微硅粉100‑150份、引气剂20‑30份、减水剂20‑25份、聚丙烯酰胺20‑30份；其制备方法为：将水泥、改性再生粗骨料、矿渣微粉、粉煤灰、微硅粉、引气剂、减水剂和水搅拌均匀后，加入混合均匀的改性再生粗骨料和聚丙烯酰胺，搅拌均匀后得到再生混凝土。本申请的再生混凝土能够降低再生混凝土的孔隙率，减少吸水性，提高再生混凝土的抗冻融性。
Freeze-thaw resistant recycled concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses freeze-thaw resistant recycled concrete and a preparation method thereof. The freeze-thaw resistant recycled concrete is prepared from the following raw materials in parts by weight: 300 to 400 parts of cement, 250 to 300 parts of modified recycled coarse aggregate, 150 to 200 parts of superfine slag powder, 100 to 150 parts of water, 150 to 200 parts of fly ash, 100 to 150 parts of silica fume, 20 to 30 parts of an air entraining agent, 20 to 25 parts of a water reducing agent and 20 to 30 parts of polyacrylamide. The preparation method comprises the following steps of: uniformly stirring the cement, the modified recycled coarse aggregate, the superfine slag powder, the fly ash, the silica fume, the air entraining agent, the water reducing agent and the water, adding the uniformly mixed modified recycled coarse aggregate and polyacrylamide, and uniformly stirring to obtain the recycled concrete. According to the recycled concrete, the porosity of the recycled concrete can be reduced, the water absorption is reduced, and the freeze-thaw resistance of the recycled concrete is improved.
本申请涉及混凝土领域，具体公开了一种抗冻融性再生混凝土及其制备方法。一种抗冻融性再生混凝土包括如下重量份数的原料：水泥300‑400份、改性再生粗骨料250‑300份、矿渣微粉150‑200份、水100‑150份、粉煤灰150‑200份、微硅粉100‑150份、引气剂20‑30份、减水剂20‑25份、聚丙烯酰胺20‑30份；其制备方法为：将水泥、改性再生粗骨料、矿渣微粉、粉煤灰、微硅粉、引气剂、减水剂和水搅拌均匀后，加入混合均匀的改性再生粗骨料和聚丙烯酰胺，搅拌均匀后得到再生混凝土。本申请的再生混凝土能够降低再生混凝土的孔隙率，减少吸水性，提高再生混凝土的抗冻融性。
Freeze-thaw resistant recycled concrete and preparation method thereof
一种抗冻融性再生混凝土及其制备方法
WANG RUIGANG (author) / FENG JIANKANG (author)
2021-06-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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