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Super-retarding concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses super-retarding concrete and a preparation method thereof. The super-retarded concrete is prepared from the following components in parts by weight: 380 to 400 parts of cement, 700 to 800 parts of fine aggregate, 900 to 1000 parts of coarse aggregate, 60 to 80 parts of fly ash, 60 to 80 parts of mineral powder and 8 to 12 parts of additive, and the additive comprises sulfurized modified lignin; the preparation method comprises the following steps: S1, mixing and stirring cement, fine aggregate, coarse aggregate, mineral powder and fly ash to obtain a mixture; s2, dissolving polyoxyethylene stearate in 80% of water, adding into the mixture, and stirring; s3, adding the vulcanized modified lignin into the mixture in 3-5 times, and continuously stirring; and S4, adding the rest 20% of water into the mixture for 2-3 times, and stirring to obtain the super-retarded concrete. The super-retarding concrete can be used for secant piles, and has the advantages that the strength of the concrete cannot be increased too fast in the early stage, and high strength can be achieved in the later stage.
本申请涉及混凝土领域，具体公开了一种超缓凝混凝土及其制备方法。一种超缓混凝土，其包括重量份计的380‑400份水泥、700‑800份细骨料、900‑1000份粗骨料、60‑80份粉煤灰、60‑80份矿粉和8‑12份外加剂，所述外加剂包括硫化改性木质素；S1、先将水泥、细骨料、粗骨料、矿粉、粉煤灰混合搅拌，得到混合料；S2、聚氧乙烯硬脂酸酯溶于80%水中后加入混合料中搅拌；S3、硫化改性木质素均分为3‑5次加入混合料中并持续搅拌；S4、剩下的20%的水分2‑3次加入混合料中搅拌后得到超缓混凝土。本申请的超缓凝混凝土可用于咬合桩，其具有混凝土强度前期不能增长太快，后期又能达到高强度优点。
Super-retarding concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses super-retarding concrete and a preparation method thereof. The super-retarded concrete is prepared from the following components in parts by weight: 380 to 400 parts of cement, 700 to 800 parts of fine aggregate, 900 to 1000 parts of coarse aggregate, 60 to 80 parts of fly ash, 60 to 80 parts of mineral powder and 8 to 12 parts of additive, and the additive comprises sulfurized modified lignin; the preparation method comprises the following steps: S1, mixing and stirring cement, fine aggregate, coarse aggregate, mineral powder and fly ash to obtain a mixture; s2, dissolving polyoxyethylene stearate in 80% of water, adding into the mixture, and stirring; s3, adding the vulcanized modified lignin into the mixture in 3-5 times, and continuously stirring; and S4, adding the rest 20% of water into the mixture for 2-3 times, and stirring to obtain the super-retarded concrete. The super-retarding concrete can be used for secant piles, and has the advantages that the strength of the concrete cannot be increased too fast in the early stage, and high strength can be achieved in the later stage.
本申请涉及混凝土领域，具体公开了一种超缓凝混凝土及其制备方法。一种超缓混凝土，其包括重量份计的380‑400份水泥、700‑800份细骨料、900‑1000份粗骨料、60‑80份粉煤灰、60‑80份矿粉和8‑12份外加剂，所述外加剂包括硫化改性木质素；S1、先将水泥、细骨料、粗骨料、矿粉、粉煤灰混合搅拌，得到混合料；S2、聚氧乙烯硬脂酸酯溶于80%水中后加入混合料中搅拌；S3、硫化改性木质素均分为3‑5次加入混合料中并持续搅拌；S4、剩下的20%的水分2‑3次加入混合料中搅拌后得到超缓混凝土。本申请的超缓凝混凝土可用于咬合桩，其具有混凝土强度前期不能增长太快，后期又能达到高强度优点。
Super-retarding concrete and preparation method thereof
一种超缓凝混凝土及其制备方法
YANG XIAOMIN (author) / XIAO HAN (author) / XU HONGGANG (author) / MENG FEI (author) / WU KUN (author) / XU YONGGANG (author) / ZHANG HENGSHUAI (author) / ZHANG FENG (author) / WANG JUN (author) / WANG KE (author)
2023-09-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024