A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-carbon thermal recycled aggregate shrinkage-compensating concrete and preparation method thereof
The invention relates to low-carbon thermal recycled aggregate shrinkage-compensating concrete in the field of concrete, which is prepared from the following components in parts by weight: 320 parts of cementing material, 300 to 350 parts of machine-made sand, 650 to 750 parts of recycled fine aggregate, 800 to 1000 parts of recycled coarse aggregate, 5 to 10 parts of water reducing agent, polypropylene fiber and composite expanding agent, the weight of the polypropylene fiber accounts for 0.8-1% of the weight of the cementing material; and the weight of the composite expanding agent accounts for 8-12% of the weight of the cementing material. The preparation method of the low-carbon thermal recycled aggregate shrinkage-compensating concrete comprises the following preparation steps: mixing the machine-made sand, the recycled fine aggregate, the recycled coarse aggregate and water according to the proportion to prepare a premix; adding the cement, the fly ash, the mineral powder, the water reducing agent, the polypropylene fiber and the composite expanding agent into the premix according to the proportion, and uniformly mixing for more than 120 seconds to obtain the low-carbon thermal recycled aggregate shrinkage-compensating concrete. The method has the effect of reducing cracks.
本申请涉及混凝土领域的一种低碳热再生骨料补偿收缩混凝土，其包括如下重量份数的组分，胶凝材料320份、机制砂300‑350份、再生细骨料650‑750份、再生粗骨料800‑1000份、减水剂5‑10份、聚丙烯纤维、复合膨胀剂；所述聚丙烯纤维重量占胶凝材料重量的0.8‑1%；所述复合膨胀剂重量占胶凝材料重量的8‑12%。低碳热再生骨料补偿收缩混凝土制备时，包括如下的制备步骤，按照配比将机制砂、再生细骨料、再生粗骨料和水混合，制备得到预混物；按照配比将水泥、粉煤灰、矿粉、减水剂、聚丙烯纤维和复合膨胀剂加入预混物中混合120s以上，混合均匀得到低碳热再生骨料补偿收缩混凝土。本申请具有降低裂缝的效果。
Low-carbon thermal recycled aggregate shrinkage-compensating concrete and preparation method thereof
The invention relates to low-carbon thermal recycled aggregate shrinkage-compensating concrete in the field of concrete, which is prepared from the following components in parts by weight: 320 parts of cementing material, 300 to 350 parts of machine-made sand, 650 to 750 parts of recycled fine aggregate, 800 to 1000 parts of recycled coarse aggregate, 5 to 10 parts of water reducing agent, polypropylene fiber and composite expanding agent, the weight of the polypropylene fiber accounts for 0.8-1% of the weight of the cementing material; and the weight of the composite expanding agent accounts for 8-12% of the weight of the cementing material. The preparation method of the low-carbon thermal recycled aggregate shrinkage-compensating concrete comprises the following preparation steps: mixing the machine-made sand, the recycled fine aggregate, the recycled coarse aggregate and water according to the proportion to prepare a premix; adding the cement, the fly ash, the mineral powder, the water reducing agent, the polypropylene fiber and the composite expanding agent into the premix according to the proportion, and uniformly mixing for more than 120 seconds to obtain the low-carbon thermal recycled aggregate shrinkage-compensating concrete. The method has the effect of reducing cracks.
本申请涉及混凝土领域的一种低碳热再生骨料补偿收缩混凝土，其包括如下重量份数的组分，胶凝材料320份、机制砂300‑350份、再生细骨料650‑750份、再生粗骨料800‑1000份、减水剂5‑10份、聚丙烯纤维、复合膨胀剂；所述聚丙烯纤维重量占胶凝材料重量的0.8‑1%；所述复合膨胀剂重量占胶凝材料重量的8‑12%。低碳热再生骨料补偿收缩混凝土制备时，包括如下的制备步骤，按照配比将机制砂、再生细骨料、再生粗骨料和水混合，制备得到预混物；按照配比将水泥、粉煤灰、矿粉、减水剂、聚丙烯纤维和复合膨胀剂加入预混物中混合120s以上，混合均匀得到低碳热再生骨料补偿收缩混凝土。本申请具有降低裂缝的效果。
Low-carbon thermal recycled aggregate shrinkage-compensating concrete and preparation method thereof
一种低碳热再生骨料补偿收缩混凝土及其制备方法
WANG JIAMIN (author) / YAO YUAN (author) / ZHANG KAIFENG (author) / YASHIRO AKIRA (author) / LIU XINGYU (author) / LUO ZUOQIU (author) / MENG GANG (author) / WANG MIN (author) / TONG XIAOGEN (author) / HU YUBO (author)
2023-05-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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