Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Environment-friendly high-performance premixed concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses environment-friendly high-performance premixed concrete and a preparation method thereof. The environment-friendly high-performance premixed concrete comprises the following components in parts by mass: 220-440 parts of cement; 120 to 200 parts of water; 80 to 120 parts of an active mineral admixture; 40-60 parts of a polycarboxylate superplasticizer; 600 to 800 parts of fine aggregate; 800 to 1200 parts of coarse aggregate; 3-15 parts of a modifier; the modifying agent at least comprises sodium pyrophosphate, sodium abietate and aluminum dihydrogen phosphate. The preparation method comprises the following steps: 1) mixing the polycarboxylate superplasticizer, the modifier and water, and stirring at 85-105 DEG C to obtain a modified solution; 2) uniformly mixing the cement, the active mineral admixture and the fine aggregate, and stirring and reacting for 1-2 hours to obtain mixed slurry; and (3) adding coarse aggregate into the mixed slurry, and uniformly mixing to obtain the environment-friendly high-performance premixed concrete. The environment-friendly high-performance premixed concrete provided by the invention has good mechanical properties, is not easy to self-shrink, reduces the use amount of cement according to the formula, and has environmental protection significance.
本申请涉及混凝土技术领域，具体公开了一种环保型高性能预拌混凝土及其制备方法。环保型高性能预拌混凝土包括以下质量份数的组分：水泥220～440份；水120～200份；活性矿物掺合料80～120份；聚羧酸高效减水剂40～60份；细骨料600～800份；粗骨料800～1200份；改良剂3～15份；改良剂至少包括焦磷酸钠、松香酸钠、磷酸二氢铝。其制备方法包括以下步骤：步骤1)将聚羧酸高效减水剂、改良剂与水混合，在85～105℃条件下搅拌，得到改良液；步骤2)将水泥、活性矿物掺合料、细骨料混合均匀，搅拌反应1～2h，得到混合浆液；步骤3)混合浆液中加入粗骨料，混合均匀，得到环保型高性能预拌混凝土。本申请的环保型高性能预拌混凝土具有较好的力学性能，不易自缩，配方减少水泥用量，具有环保意义。
Environment-friendly high-performance premixed concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses environment-friendly high-performance premixed concrete and a preparation method thereof. The environment-friendly high-performance premixed concrete comprises the following components in parts by mass: 220-440 parts of cement; 120 to 200 parts of water; 80 to 120 parts of an active mineral admixture; 40-60 parts of a polycarboxylate superplasticizer; 600 to 800 parts of fine aggregate; 800 to 1200 parts of coarse aggregate; 3-15 parts of a modifier; the modifying agent at least comprises sodium pyrophosphate, sodium abietate and aluminum dihydrogen phosphate. The preparation method comprises the following steps: 1) mixing the polycarboxylate superplasticizer, the modifier and water, and stirring at 85-105 DEG C to obtain a modified solution; 2) uniformly mixing the cement, the active mineral admixture and the fine aggregate, and stirring and reacting for 1-2 hours to obtain mixed slurry; and (3) adding coarse aggregate into the mixed slurry, and uniformly mixing to obtain the environment-friendly high-performance premixed concrete. The environment-friendly high-performance premixed concrete provided by the invention has good mechanical properties, is not easy to self-shrink, reduces the use amount of cement according to the formula, and has environmental protection significance.
本申请涉及混凝土技术领域，具体公开了一种环保型高性能预拌混凝土及其制备方法。环保型高性能预拌混凝土包括以下质量份数的组分：水泥220～440份；水120～200份；活性矿物掺合料80～120份；聚羧酸高效减水剂40～60份；细骨料600～800份；粗骨料800～1200份；改良剂3～15份；改良剂至少包括焦磷酸钠、松香酸钠、磷酸二氢铝。其制备方法包括以下步骤：步骤1)将聚羧酸高效减水剂、改良剂与水混合，在85～105℃条件下搅拌，得到改良液；步骤2)将水泥、活性矿物掺合料、细骨料混合均匀，搅拌反应1～2h，得到混合浆液；步骤3)混合浆液中加入粗骨料，混合均匀，得到环保型高性能预拌混凝土。本申请的环保型高性能预拌混凝土具有较好的力学性能，不易自缩，配方减少水泥用量，具有环保意义。
Environment-friendly high-performance premixed concrete and preparation method thereof
一种环保型高性能预拌混凝土及其制备方法
XU YUNJUN (Autor:in) / XIAO RENYI (Autor:in) / YIN QUANFA (Autor:in) / XIE GUOQING (Autor:in) / TANG ZHIFENG (Autor:in)
02.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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