Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for preventing early-stage shrinkage cracks
The invention relates to a construction method for preventing early-stage shrinkage cracks, which comprises the following steps of: treating the surface of old concrete, namely cleaning the surface of the old concrete, removing loose particles and sundries, and ensuring the bonding between the new concrete and the old concrete; post-grouting system arrangement and installation: arranging a plurality of post-grouting systems on the old concrete at the combination part of the new concrete and the old concrete, and fixing the post-grouting systems; new concrete pouring is conducted, specifically, after arrangement of the post-grouting system is completed, new concrete pouring work is conducted; injection of a retarder or cement paste doped with a retarding component: injecting the prepared retarder or cement paste doped with the retarding component through a post-grouting system; the pouring formwork is dismantled, specifically, two section formworks of the pouring formwork are dismantled in a segmented mode; and follow-up curing is conducted, specifically, after the pouring formwork is removed, moisturizing curing is conducted within the preset curing time. The post-grouting system comprises a full-section grouting pipe and a half-section grouting pipe, the half-section grouting pipe is arranged above the full-section grouting pipe, and the half-section grouting pipe and the full-section grouting pipe are arranged in a staggered mode.
本发明涉及一种防早期收缩裂缝的施工方法，其包括：旧混凝土表面处理：清理旧混凝土表面，去除松散颗粒和杂物，确保新旧混凝土之间的粘结；后注浆系统布置和安装：在新旧混凝土结合部位的旧混凝土上布置若干后注浆系统，并将其固定；新混凝土浇筑：在后注浆系统布置完成后，进行新混凝土的浇筑工作；缓凝剂或掺有缓凝组分的水泥浆注射：将制备好的缓凝剂或掺有缓凝组分的水泥浆通过后注浆系统进行注射；浇筑模板的拆除：针对浇筑模板的两块断面模板进行分段拆除；后续养护：在浇筑模板拆除后，在预设养护时间内进行保湿养护。后注浆系统包括全断面注浆管和半断面注浆管，且半断面注浆管布置于全断面注浆管的上方，并与全断面注浆管错位布置。
Construction method for preventing early-stage shrinkage cracks
The invention relates to a construction method for preventing early-stage shrinkage cracks, which comprises the following steps of: treating the surface of old concrete, namely cleaning the surface of the old concrete, removing loose particles and sundries, and ensuring the bonding between the new concrete and the old concrete; post-grouting system arrangement and installation: arranging a plurality of post-grouting systems on the old concrete at the combination part of the new concrete and the old concrete, and fixing the post-grouting systems; new concrete pouring is conducted, specifically, after arrangement of the post-grouting system is completed, new concrete pouring work is conducted; injection of a retarder or cement paste doped with a retarding component: injecting the prepared retarder or cement paste doped with the retarding component through a post-grouting system; the pouring formwork is dismantled, specifically, two section formworks of the pouring formwork are dismantled in a segmented mode; and follow-up curing is conducted, specifically, after the pouring formwork is removed, moisturizing curing is conducted within the preset curing time. The post-grouting system comprises a full-section grouting pipe and a half-section grouting pipe, the half-section grouting pipe is arranged above the full-section grouting pipe, and the half-section grouting pipe and the full-section grouting pipe are arranged in a staggered mode.
本发明涉及一种防早期收缩裂缝的施工方法，其包括：旧混凝土表面处理：清理旧混凝土表面，去除松散颗粒和杂物，确保新旧混凝土之间的粘结；后注浆系统布置和安装：在新旧混凝土结合部位的旧混凝土上布置若干后注浆系统，并将其固定；新混凝土浇筑：在后注浆系统布置完成后，进行新混凝土的浇筑工作；缓凝剂或掺有缓凝组分的水泥浆注射：将制备好的缓凝剂或掺有缓凝组分的水泥浆通过后注浆系统进行注射；浇筑模板的拆除：针对浇筑模板的两块断面模板进行分段拆除；后续养护：在浇筑模板拆除后，在预设养护时间内进行保湿养护。后注浆系统包括全断面注浆管和半断面注浆管，且半断面注浆管布置于全断面注浆管的上方，并与全断面注浆管错位布置。
Construction method for preventing early-stage shrinkage cracks
一种防早期收缩裂缝的施工方法
CHE KAI (Autor:in) / BAI XIAOJIE (Autor:in) / WANG JIANGUANG (Autor:in) / DING ZHENMING (Autor:in) / YAO WENHUA (Autor:in) / SUN JIAN (Autor:in) / LI XING (Autor:in) / YUAN JUN (Autor:in) / WANG TIGUANG (Autor:in) / LI YAO (Autor:in)
01.11.2024
Patent
Elektronische Ressource
Chinesisch
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