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A platform for research: civil engineering, architecture and urbanism
High-strength recycled concrete and preparation method thereof
The invention discloses high-strength recycled concrete and a preparation method thereof, and relates to the field of concrete. The high-strength recycled concrete is prepared from the following raw materials in parts by weight: 120 to 200 parts of cement, 850 to 1000 parts of hydrophobic modified recycled coarse aggregate, 180 to 280 parts of recycled fine aggregate, 220 to 360 parts of sand, 400 to 650 parts of fly ash, 60 to 120 parts of silica fume, 20 to 35 parts of water reducing agent, 22 to 35 parts of modified waste rubber powder and 80 to 120 parts of water. The hydrophobic modified recycled coarse aggregate comprises the following components in parts by weight: 10-16 parts of recycled coarse aggregate, 15-27 parts of hydrophobic desulfurized gypsum powder, 3-5 parts of polyethylene glycol, 24-36 parts of acrylic resin and 30-40 parts of water. The hydrophobic desulfurized gypsum powder is prepared from the following raw materials in parts by weight: 15-21 parts of desulfurized gypsum, 10-15 parts of sodium hydroxide, 5-7 parts of sodium sulfate, 18-24 parts of a silane coupling agent, 2-5 parts of an anionic surfactant and 45-65 parts of a solvent. The recycled concrete prepared by the method has relatively high compressive strength, splitting tensile strength and relatively strong crack resistance.
本申请公开了一种高强度再生混凝土及其制备方法，涉及混凝土领域。一种高强度再生混凝土包括原料按重量份包括120‑200份水泥，850‑1000份疏水改性再生粗骨料，180‑280份再生细骨料，220‑360份砂，400‑650份粉煤灰，60‑120份硅灰，20‑35份减水剂，22‑35份改性废弃橡胶粉末，80‑120份水；所述疏水改性再生粗骨料包括以下组份：10‑16份再生粗骨料，15‑27份疏水性脱硫石膏粉末，3‑5份聚乙二醇、24‑36份丙烯酸树脂、30‑40份水；所述疏水性脱硫石膏粉末原料包括以下组份：15‑21份脱硫石膏、10‑15份氢氧化钠，5‑7份硫酸钠，18‑24份硅烷偶联剂，2‑5份阴离子表面活性剂，45‑65份溶剂。通过上述方法制备得到的再生混凝土具有较高的抗压强度、劈裂抗拉强度和较强的抗裂能力。
High-strength recycled concrete and preparation method thereof
The invention discloses high-strength recycled concrete and a preparation method thereof, and relates to the field of concrete. The high-strength recycled concrete is prepared from the following raw materials in parts by weight: 120 to 200 parts of cement, 850 to 1000 parts of hydrophobic modified recycled coarse aggregate, 180 to 280 parts of recycled fine aggregate, 220 to 360 parts of sand, 400 to 650 parts of fly ash, 60 to 120 parts of silica fume, 20 to 35 parts of water reducing agent, 22 to 35 parts of modified waste rubber powder and 80 to 120 parts of water. The hydrophobic modified recycled coarse aggregate comprises the following components in parts by weight: 10-16 parts of recycled coarse aggregate, 15-27 parts of hydrophobic desulfurized gypsum powder, 3-5 parts of polyethylene glycol, 24-36 parts of acrylic resin and 30-40 parts of water. The hydrophobic desulfurized gypsum powder is prepared from the following raw materials in parts by weight: 15-21 parts of desulfurized gypsum, 10-15 parts of sodium hydroxide, 5-7 parts of sodium sulfate, 18-24 parts of a silane coupling agent, 2-5 parts of an anionic surfactant and 45-65 parts of a solvent. The recycled concrete prepared by the method has relatively high compressive strength, splitting tensile strength and relatively strong crack resistance.
本申请公开了一种高强度再生混凝土及其制备方法，涉及混凝土领域。一种高强度再生混凝土包括原料按重量份包括120‑200份水泥，850‑1000份疏水改性再生粗骨料，180‑280份再生细骨料，220‑360份砂，400‑650份粉煤灰，60‑120份硅灰，20‑35份减水剂，22‑35份改性废弃橡胶粉末，80‑120份水；所述疏水改性再生粗骨料包括以下组份：10‑16份再生粗骨料，15‑27份疏水性脱硫石膏粉末，3‑5份聚乙二醇、24‑36份丙烯酸树脂、30‑40份水；所述疏水性脱硫石膏粉末原料包括以下组份：15‑21份脱硫石膏、10‑15份氢氧化钠，5‑7份硫酸钠，18‑24份硅烷偶联剂，2‑5份阴离子表面活性剂，45‑65份溶剂。通过上述方法制备得到的再生混凝土具有较高的抗压强度、劈裂抗拉强度和较强的抗裂能力。
High-strength recycled concrete and preparation method thereof
一种高强度再生混凝土及其制备方法
GUO QING (author) / MA WUPING (author) / GUO FEI (author) / PAN JIZENG (author)
2023-10-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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