C50高强泵送砼的研制与应用  

Preparation and Application of C50 High-Strength Pumped Concrete

作　　者：杨和春 

机构地区：[1]中铁十七局一处安居科

出　　处：《科技情报开发与经济》2000年第1期61-62,共2页Sci-Tech Information Development & Economy

摘　　要：详细介绍 C5 0高强泵送砼采用各种常规原材料的选配 ,掺用 ZD- 18高效泵送剂可提高混凝土的早期强度 ,与不掺泵送剂的砼相比 ,掺 1%泵送剂的混凝土 ,其硬化后的强度 3天可提高 49% ,7天可提高 43% ,2 8天可提高 2 6 %。Inrtoducing in detail the proportioning of varions normal raw materials adopted by C50 high-strength pumped concrete.Admixing ZD-18 higher effective pumping aid can increase the early strength of concrete.Compared with the concrete without pumping aid, R 3 of the concrete with 1% of pumping aid can be increased by 49%,R 7 by 43% and R 28 by 26% after hardening.

关 键 词：公路桥 现浇箱梁 泵送砼 桥梁施工 混凝土 

分 类 号：U445.57[建筑科学—桥梁与隧道工程]