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High-strength recycled aggregate concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses high-strength recycled aggregate concrete and a preparation method thereof. The concrete is prepared from 300 to 350 parts ofcement, 80 to 100 parts of fly ash, 10 to 20 parts of silicon powder, 800 to 900 parts of a fine aggregate, 1400 to 1500 parts of a modified recycled coarse aggregate, 200 to 300 parts of water and 9to 15 parts of a water reducing agent, the preparation method of the modified recycled coarse aggregate comprises the following steps: S1, adding 400-500 parts of a recycled coarse aggregate, 60-70 parts of slag, 80-90 parts of an alkaline activator and 5-10 parts of calcium lignosulphonate into 140-150 parts of water, wherein the alkaline activator comprises sodium hydroxide powder and water glass powder in a weight ratio of (2-3): 1, and S2, adding 5-10 parts of wollastonite, 5-10 parts of quartz powder, 10-20 parts of organic silicon resin and 5-10 parts of a silane coupling agent into theproduct obtained in the step S1, mixing, and curing. The preparation method of the concrete comprises: mixing the concrete raw material modified recycled coarse aggregate, fine aggregate, silicon powder and half of water in parts by weight to obtain an aggregate mixture, adding the rest raw materials, and mixing to obtain recycled aggregate concrete. The recycled aggregate concrete has the advantage of high strength.
本发明涉及混凝土领域，具体公开了一种高强度再生骨料混凝土及其制备方法。混凝土包括水泥300‑350份，粉煤灰80‑100份，硅粉10‑20份，细骨料800‑900份，改性再生粗骨料1400‑1500份，水200‑300份，减水剂9‑15份；改性再生粗骨料的制备：S1:取再生粗骨料400‑500份，矿渣60‑70份，碱性激发剂80‑90和木质磺酸钙5‑10份加入140‑150份水中，碱性激发剂包括重量比2‑3:1的氢氧化钠粉末和水玻璃粉末；S2:取硅灰石5‑10份，石英粉5‑10份，有机硅树脂10‑20份和硅烷偶联剂5‑10份加到步骤S1所得物中混合，养护即得。混凝土的制备：将混凝土原料改性再生粗骨料、细骨料、硅粉和重量份数一半的水混合得骨料混合物，将剩余原料加入，混合得再生骨料混凝土。本发明的再生骨料混凝土具有强度高的优点。
High-strength recycled aggregate concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses high-strength recycled aggregate concrete and a preparation method thereof. The concrete is prepared from 300 to 350 parts ofcement, 80 to 100 parts of fly ash, 10 to 20 parts of silicon powder, 800 to 900 parts of a fine aggregate, 1400 to 1500 parts of a modified recycled coarse aggregate, 200 to 300 parts of water and 9to 15 parts of a water reducing agent, the preparation method of the modified recycled coarse aggregate comprises the following steps: S1, adding 400-500 parts of a recycled coarse aggregate, 60-70 parts of slag, 80-90 parts of an alkaline activator and 5-10 parts of calcium lignosulphonate into 140-150 parts of water, wherein the alkaline activator comprises sodium hydroxide powder and water glass powder in a weight ratio of (2-3): 1, and S2, adding 5-10 parts of wollastonite, 5-10 parts of quartz powder, 10-20 parts of organic silicon resin and 5-10 parts of a silane coupling agent into theproduct obtained in the step S1, mixing, and curing. The preparation method of the concrete comprises: mixing the concrete raw material modified recycled coarse aggregate, fine aggregate, silicon powder and half of water in parts by weight to obtain an aggregate mixture, adding the rest raw materials, and mixing to obtain recycled aggregate concrete. The recycled aggregate concrete has the advantage of high strength.
本发明涉及混凝土领域，具体公开了一种高强度再生骨料混凝土及其制备方法。混凝土包括水泥300‑350份，粉煤灰80‑100份，硅粉10‑20份，细骨料800‑900份，改性再生粗骨料1400‑1500份，水200‑300份，减水剂9‑15份；改性再生粗骨料的制备：S1:取再生粗骨料400‑500份，矿渣60‑70份，碱性激发剂80‑90和木质磺酸钙5‑10份加入140‑150份水中，碱性激发剂包括重量比2‑3:1的氢氧化钠粉末和水玻璃粉末；S2:取硅灰石5‑10份，石英粉5‑10份，有机硅树脂10‑20份和硅烷偶联剂5‑10份加到步骤S1所得物中混合，养护即得。混凝土的制备：将混凝土原料改性再生粗骨料、细骨料、硅粉和重量份数一半的水混合得骨料混合物，将剩余原料加入，混合得再生骨料混凝土。本发明的再生骨料混凝土具有强度高的优点。
High-strength recycled aggregate concrete and preparation method thereof
一种高强度再生骨料混凝土及其制备方法
ZHANG SHI'EN (author) / ZOU CAICHAO (author) / ZHANG LE (author) / ZENG QIRUI (author) / QI DONG (author)
2020-12-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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