Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses high-compressive-strength recycled concrete and a preparation process thereof. The high-compressive-strength recycled concrete comprises the following components in parts by weight: 300-420 parts of reinforced recycled aggregate, 25-35 parts of recycled micro powder, 100-200 parts of natural coarse aggregate, 120-200 parts of natural fine sand, 120-170 parts of cement, 50-130 parts of fly ash, 50-120 parts of mineral powder, 6-12 parts of a waterproof agent, 0.8-2.2 parts of an air entraining agent, 120-160 parts of water and 20-35 parts of polypropylene mixed filler. The preparation process comprises the following steps: S1, weighing corresponding amounts of cement and natural fine sand, putting the cement and the natural fine sand into a stirrer, and stirring for40-60 seconds; S2, weighing the regenerated micro-powder, the fly ash, the mineral powder and the polypropylene mixed filler according to corresponding proportions, adding the weighed materials into the stirrer in the step S1, continuing to stir and mix for 30-40 seconds, adding half of the water according to the proportion, continuing to stir for 30-40 seconds, and mixing to obtain mortar with uniform color; and S3, adding the rest half of the water, the reinforced recycled aggregate, the natural coarse aggregate, the air entraining agent and the waterproof agent according to the proportion in the step S2, and continuously stirring for 60-80 seconds until the mixture is uniform.
本发明公开了一种高抗压强度再生混凝土及其制备工艺，包含以下重量份的组分：增强再生骨料300～420份、再生微粉25～35份、天然粗骨料100～200份、天然细沙120～200份、水泥120～170份、粉煤灰50～130份、矿粉50～120份、防水剂6～12份、引气剂0.8～2.2份、水120～160份、聚丙烯混填料20～35份；制备工艺包括：S1、称取相应分量水泥、天然细沙投入搅拌机搅拌40～60s；S2、称取相应分量的再生微粉、粉煤灰、矿粉、聚丙烯混填料加入S1步骤中的搅拌机继续搅拌混合30～40s，再加入一半配比分量的水继续搅拌30～40s混合成颜色均一的砂浆；S3、向S2步骤中加入剩余一半配比分量的水、增强再生骨料、天然粗骨料、引气剂、防水剂继续搅拌60～80s至均匀。
The invention discloses high-compressive-strength recycled concrete and a preparation process thereof. The high-compressive-strength recycled concrete comprises the following components in parts by weight: 300-420 parts of reinforced recycled aggregate, 25-35 parts of recycled micro powder, 100-200 parts of natural coarse aggregate, 120-200 parts of natural fine sand, 120-170 parts of cement, 50-130 parts of fly ash, 50-120 parts of mineral powder, 6-12 parts of a waterproof agent, 0.8-2.2 parts of an air entraining agent, 120-160 parts of water and 20-35 parts of polypropylene mixed filler. The preparation process comprises the following steps: S1, weighing corresponding amounts of cement and natural fine sand, putting the cement and the natural fine sand into a stirrer, and stirring for40-60 seconds; S2, weighing the regenerated micro-powder, the fly ash, the mineral powder and the polypropylene mixed filler according to corresponding proportions, adding the weighed materials into the stirrer in the step S1, continuing to stir and mix for 30-40 seconds, adding half of the water according to the proportion, continuing to stir for 30-40 seconds, and mixing to obtain mortar with uniform color; and S3, adding the rest half of the water, the reinforced recycled aggregate, the natural coarse aggregate, the air entraining agent and the waterproof agent according to the proportion in the step S2, and continuously stirring for 60-80 seconds until the mixture is uniform.
本发明公开了一种高抗压强度再生混凝土及其制备工艺，包含以下重量份的组分：增强再生骨料300～420份、再生微粉25～35份、天然粗骨料100～200份、天然细沙120～200份、水泥120～170份、粉煤灰50～130份、矿粉50～120份、防水剂6～12份、引气剂0.8～2.2份、水120～160份、聚丙烯混填料20～35份；制备工艺包括：S1、称取相应分量水泥、天然细沙投入搅拌机搅拌40～60s；S2、称取相应分量的再生微粉、粉煤灰、矿粉、聚丙烯混填料加入S1步骤中的搅拌机继续搅拌混合30～40s，再加入一半配比分量的水继续搅拌30～40s混合成颜色均一的砂浆；S3、向S2步骤中加入剩余一半配比分量的水、增强再生骨料、天然粗骨料、引气剂、防水剂继续搅拌60～80s至均匀。
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