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A platform for research: civil engineering, architecture and urbanism
Preparation method of freeze-thaw resistant recycled concrete
The invention discloses freeze-thaw resistant recycled concrete and a preparation method thereof, and relates to the technical field of recycled concrete, the freeze-thaw resistant recycled concrete comprises the following components by weight: 200-220 parts of water; 400 to 460 parts of cement; 1115 to 1190 parts of reinforced recycled coarse aggregate; 602 to 630 parts of natural sand; 2 to 8 parts of basalt fiber; 3-6 parts of a water reducing agent; wherein the preparation process of the reinforced recycled coarse aggregate comprises the following steps: heating simply crushed recycled coarse aggregate for 5-10 hours at the heating temperature of 300-600 DEG C, and then cooling to room temperature; grinding the cooled recycled coarse aggregate to remove the old mortar on the surface of the recycled coarse aggregate; then soaking in an acetic acid solution for 1-3 hours; the preparation method comprises the following steps: cleaning recycled coarse aggregate pretreated by an acetic acid solution, air-drying, soaking in cement slurry, continuously stirring for 20-30 minutes, standing for 10-20 minutes, taking out, and air-drying to obtain the reinforced recycled coarse aggregate. The anti-freezing performance of the recycled concrete is further improved by strengthening the recycled coarse aggregate.
本发明公开了一种抗冻融型再生混凝土及其制备方法，涉及再生混凝土技术领域，包括如下重量份的组分：水200～220份；水泥400～460份；强化再生粗骨料1115～1190份；天然砂子602～630份；玄武岩纤维2～8份；减水剂3～6份；其中，所述强化再生粗骨料的制备过程为：将简单破碎的再生粗骨料加热5～10h，加热温度为300～600℃，之后冷却至室温；将冷却后的再生粗骨料进行研磨以去除其表面的旧砂浆；然后将其浸泡到乙酸溶液中1～3h；将乙酸溶液预处理后的再生粗骨料清洗干净、风干后，浸泡在水泥浆液中，持续搅拌20～30min，静置10～20min后取出，风干后即得到强化再生粗骨料。本发明通过强化再生粗骨料，进一步提高再生混凝土的抗冻性能。
Preparation method of freeze-thaw resistant recycled concrete
The invention discloses freeze-thaw resistant recycled concrete and a preparation method thereof, and relates to the technical field of recycled concrete, the freeze-thaw resistant recycled concrete comprises the following components by weight: 200-220 parts of water; 400 to 460 parts of cement; 1115 to 1190 parts of reinforced recycled coarse aggregate; 602 to 630 parts of natural sand; 2 to 8 parts of basalt fiber; 3-6 parts of a water reducing agent; wherein the preparation process of the reinforced recycled coarse aggregate comprises the following steps: heating simply crushed recycled coarse aggregate for 5-10 hours at the heating temperature of 300-600 DEG C, and then cooling to room temperature; grinding the cooled recycled coarse aggregate to remove the old mortar on the surface of the recycled coarse aggregate; then soaking in an acetic acid solution for 1-3 hours; the preparation method comprises the following steps: cleaning recycled coarse aggregate pretreated by an acetic acid solution, air-drying, soaking in cement slurry, continuously stirring for 20-30 minutes, standing for 10-20 minutes, taking out, and air-drying to obtain the reinforced recycled coarse aggregate. The anti-freezing performance of the recycled concrete is further improved by strengthening the recycled coarse aggregate.
本发明公开了一种抗冻融型再生混凝土及其制备方法，涉及再生混凝土技术领域，包括如下重量份的组分：水200～220份；水泥400～460份；强化再生粗骨料1115～1190份；天然砂子602～630份；玄武岩纤维2～8份；减水剂3～6份；其中，所述强化再生粗骨料的制备过程为：将简单破碎的再生粗骨料加热5～10h，加热温度为300～600℃，之后冷却至室温；将冷却后的再生粗骨料进行研磨以去除其表面的旧砂浆；然后将其浸泡到乙酸溶液中1～3h；将乙酸溶液预处理后的再生粗骨料清洗干净、风干后，浸泡在水泥浆液中，持续搅拌20～30min，静置10～20min后取出，风干后即得到强化再生粗骨料。本发明通过强化再生粗骨料，进一步提高再生混凝土的抗冻性能。
Preparation method of freeze-thaw resistant recycled concrete
抗冻融型再生混凝土的制备方法
JUNG WON HOON (author) / DU CHAOWEI (author) / LI GANG (author) / XUE PEIWEN (author) / WANG XINGYI (author) / TANAKA AKIRA (author) / ZHANG YAHUI (author) / SUN MENG (author) / ZHANG JINLEI (author) / WANG QINGBO (author)
2022-11-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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