溫泉武
溫泉武.預制管片混凝土裂縫控制技術研究[J].混凝土與水泥制品,2022(1):44-47.
WEN Q W.Research Crack Control Technology of Precast Segment Concrete[J].China Concrete and Cement Products,2022(1):44-47.
預制管片混凝土裂縫控制技術研究
溫泉武
溫泉武.預制管片混凝土裂縫控制技術研究[J].混凝土與水泥制品,2022(1):44-47.
WEN Q W.Research Crack Control Technology of Precast Segment Concrete[J].China Concrete and Cement Products,2022(1):44-47.
摘 要:為抑止混凝土收縮,配制出滿足工作性、力學性能、耐久性要求,又經濟合理的預制管片用混凝土,依據SL/T 352—2020《水工混凝土試驗規程》,通過降低混凝土漿體總量等方法,試驗研究了不同水膠比和粉煤灰摻量對管片用混凝土強度的影響。在配合比優選基礎上,提出了管片生產澆筑和養護過程中的工藝控制措施,可為管片的生產提供參考。
Abstract: In order to inhibit concrete shrinkage, and prepare precast segment concrete that meets the requirements of workability, mechanical properties and durability, according to the SL/T 352—2020 Test Code for Hydraulic Concrete, the effects of different water binder ratio and fly ash content on concrete strength are studied by reducing the total amount of concrete slurry. On the basis of mix proportion optimization, the precautions in the process of segment production, pouring and maintenance are put forward, which can provide technical solutions for the production site.
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