A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses C35 underwater concrete and a preparation method thereof, and relates to the technical field of concrete preparation. The C35 underwater concrete is prepared from the following components in parts by mass: 250 to 420 parts of cement, 380-750 parts of sand with mud content <2.54%; 100-250 parts of broken stone with a particle size of 6-18 mm; 50-80 parts of mineral powder with the ignition loss of 1.50%-1.60%; 50-110 parts of fly ash with the ignition loss of 4.74%; 30 to 65 parts of an active agent; 40-80 parts of water reducing agent and 200-420 parts of water. The preparation method of the C35 underwater concrete comprises the following steps: S1, adding the cement, the sand, the gravels and the water which are proportioned into a stirring machine, and stirring to obtain a primary mixture; and S2, adding mineral powder and fly ash firstly into the first-stage mixture to be mixed for 30 min. According to the C35 underwater concrete and the preparation method thereof, the mixing mechanism plays a role in pushing the concrete again when resetting based on elastic force, so that the mixing effect of the water reducing agent and the concrete is further promoted, and the water reducing agent is uniformly distributed in the concrete.
本发明公开了一种C35水下混凝土及其制备方法，涉及混凝土制备技术领域。该C35水下混凝土，按质量份数包括以下组成成分，水泥250‑420份；含泥量<2.54%的砂子380‑750份；粒径6‑18mm的碎石100‑250份；烧失量为1.50%‑1.60%的矿粉50‑80份；烧失量为4.74%的粉煤灰50‑110份；活性剂30‑65份；减水剂40‑80份和水200‑420份，一种C35水下混凝土的制备方法，包括以下步骤，S1，将配比好的水泥、砂子、碎石和水加入搅拌机内进行搅拌，得到一级混合物；S2，将矿粉与粉煤灰率先添入一级混合物内拌和30min。该C35水下混凝土及其制备方法，混合机构在基于弹力复位时对混凝土起到再次推动作用，进一步促进减水剂与混凝土的混合效果，使得减水剂在混凝土内分布均匀。
The invention discloses C35 underwater concrete and a preparation method thereof, and relates to the technical field of concrete preparation. The C35 underwater concrete is prepared from the following components in parts by mass: 250 to 420 parts of cement, 380-750 parts of sand with mud content <2.54%; 100-250 parts of broken stone with a particle size of 6-18 mm; 50-80 parts of mineral powder with the ignition loss of 1.50%-1.60%; 50-110 parts of fly ash with the ignition loss of 4.74%; 30 to 65 parts of an active agent; 40-80 parts of water reducing agent and 200-420 parts of water. The preparation method of the C35 underwater concrete comprises the following steps: S1, adding the cement, the sand, the gravels and the water which are proportioned into a stirring machine, and stirring to obtain a primary mixture; and S2, adding mineral powder and fly ash firstly into the first-stage mixture to be mixed for 30 min. According to the C35 underwater concrete and the preparation method thereof, the mixing mechanism plays a role in pushing the concrete again when resetting based on elastic force, so that the mixing effect of the water reducing agent and the concrete is further promoted, and the water reducing agent is uniformly distributed in the concrete.
本发明公开了一种C35水下混凝土及其制备方法，涉及混凝土制备技术领域。该C35水下混凝土，按质量份数包括以下组成成分，水泥250‑420份；含泥量<2.54%的砂子380‑750份；粒径6‑18mm的碎石100‑250份；烧失量为1.50%‑1.60%的矿粉50‑80份；烧失量为4.74%的粉煤灰50‑110份；活性剂30‑65份；减水剂40‑80份和水200‑420份，一种C35水下混凝土的制备方法，包括以下步骤，S1，将配比好的水泥、砂子、碎石和水加入搅拌机内进行搅拌，得到一级混合物；S2，将矿粉与粉煤灰率先添入一级混合物内拌和30min。该C35水下混凝土及其制备方法，混合机构在基于弹力复位时对混凝土起到再次推动作用，进一步促进减水剂与混凝土的混合效果，使得减水剂在混凝土内分布均匀。
C35 underwater concrete and preparation method thereof
一种C35水下混凝土及其制备方法
LI SIYING (author)
2021-06-18
Patent
Electronic Resource
Chinese
Underwater shrinkage-free concrete and preparation method thereof
| European Patent Office | 2023