Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bridge joint seam early strength UHPC material and preparation method thereof
The invention discloses a bridge joint seam early strength UHPC material, which is characterized in that the bridge joint seam early strength UHPC material comprises silica fume, limestone powder, cement, river sand, mixing water, a water reducing agent and steel fibers, and an addition ratio of the cement to the silica fume to the limestone powder to the river sand to the mixing water to the water reducing agent is (0.7-1.0): (0.1-0.2): (0.1-0.2): (0.8-1.1): (0.15-0.20): (0.02-0.05). The invention further discloses a preparation method of the bridge joint seam early strength UHPC material. According to the bridge joint seam early strength UHPC material, a cementing material in UHPC is replaced with a large amount of inert material, so that the early strength is high, the later strength iscontinuously increased, and the phenomenon of strength reduction cannot be caused by early loading. A wet joint constructed by using the concrete has the respective advantages of a traditional wet joint and a glue joint, the purpose of rapid construction can be achieved, and the advantages of continuity of common reinforcing steel bars, low requirement for construction and manufacturing precision, good durability and the like are achieved.
本发明公开了一种桥梁拼接缝早强UHPC材料，其特征在于，组分包括硅灰、石灰石粉、水泥、河砂、拌合水、减水剂及钢纤维，其中水泥、硅灰、石灰石粉、河砂、拌合水和减水剂的添加比例为(0.7～1.0)：(0.1～0.2)：(0.1～0.2)：(0.8～1.1)：(0.15～0.20)：(0.02～0.05)。本发明还公开了一种桥梁拼接缝早强UHPC材料的制备方法。本发明的桥梁拼接缝早强UHPC材料，通过大掺量的惰性材料取代UHPC中的胶凝材料，不仅早期强度高，后期强度继续增加，且早期加载不会导致强度倒缩现象。使用该种混凝土施工的湿接缝兼具传统湿接缝与胶接缝各自优点，既能达到快速施工的目的，又具备普通钢筋连续、对施工制造精度要求低、耐久性好等优点。
Bridge joint seam early strength UHPC material and preparation method thereof
The invention discloses a bridge joint seam early strength UHPC material, which is characterized in that the bridge joint seam early strength UHPC material comprises silica fume, limestone powder, cement, river sand, mixing water, a water reducing agent and steel fibers, and an addition ratio of the cement to the silica fume to the limestone powder to the river sand to the mixing water to the water reducing agent is (0.7-1.0): (0.1-0.2): (0.1-0.2): (0.8-1.1): (0.15-0.20): (0.02-0.05). The invention further discloses a preparation method of the bridge joint seam early strength UHPC material. According to the bridge joint seam early strength UHPC material, a cementing material in UHPC is replaced with a large amount of inert material, so that the early strength is high, the later strength iscontinuously increased, and the phenomenon of strength reduction cannot be caused by early loading. A wet joint constructed by using the concrete has the respective advantages of a traditional wet joint and a glue joint, the purpose of rapid construction can be achieved, and the advantages of continuity of common reinforcing steel bars, low requirement for construction and manufacturing precision, good durability and the like are achieved.
本发明公开了一种桥梁拼接缝早强UHPC材料，其特征在于，组分包括硅灰、石灰石粉、水泥、河砂、拌合水、减水剂及钢纤维，其中水泥、硅灰、石灰石粉、河砂、拌合水和减水剂的添加比例为(0.7～1.0)：(0.1～0.2)：(0.1～0.2)：(0.8～1.1)：(0.15～0.20)：(0.02～0.05)。本发明还公开了一种桥梁拼接缝早强UHPC材料的制备方法。本发明的桥梁拼接缝早强UHPC材料，通过大掺量的惰性材料取代UHPC中的胶凝材料，不仅早期强度高，后期强度继续增加，且早期加载不会导致强度倒缩现象。使用该种混凝土施工的湿接缝兼具传统湿接缝与胶接缝各自优点，既能达到快速施工的目的，又具备普通钢筋连续、对施工制造精度要求低、耐久性好等优点。
Bridge joint seam early strength UHPC material and preparation method thereof
一种桥梁拼接缝早强UHPC材料及其制备方法
ZENG MIN (Autor:in) / YU RUI (Autor:in) / WEN WANGQING (Autor:in) / YAN AIGUO (Autor:in) / HU FANGJIE (Autor:in) / XIA ZHENGCHUN (Autor:in) / HUANG ZHEN (Autor:in) / JIANG WENKAI (Autor:in)
02.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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