铁路工程大体积混凝土的水化热及裂缝控制  

Hydration Heat and Crack Control for Mass Concrete in Railway Engineering

作　　者：陶建强 李化建[2,3] 黄佳木[1] 黄法礼 易忠来[2,3] 谢永江[2,3] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]中国铁道科学研究院铁道建筑研究所,北京100081 [3]中国铁道科学研究院高速铁路轨道技术国家重点实验室,北京100081

出　　处：《铁道建筑》2018年第1期146-149,共4页Railway Engineering

基　　金：国家自然科学基金(51578545;51378499);中国铁道科学研究院基金(2016YJ038)

摘　　要：铁路工程大体积混凝土的温度裂缝是影响混凝土结构安全性和耐久性的重要因素。本文首先总结了铁路工程大体积混凝土水化热的影响因素,然后从水化热温升的控制、浇筑阶段施工温度的控制及养护阶段混凝土内外温差的控制3个方面分析了现有抑制铁路工程大体积混凝土温度裂缝的措施。最后指出了现有抑制铁路工程大体积混凝土温度裂缝过程中存在的问题。The temperature crack of mass concrete in railway engineering is an important factor affecting the safety and durability of the concrete structure.Firstly,the factors affecting the hydration heat of mass concrete in railway engineering were summarized in this paper.Secondly,The existing measures to reduce the temperature cracks in the mass concrete of railway engineering were analyzed from three aspects,namely the control of hydration heat temperature rise,the construction temperature during casting stage,the temperature difference between inside and outside of concrete in maintenance stage. Finally,the existing problems in the process of reducing the temperature cracks in the mass concrete of railway engineering were pointed out.

关 键 词：铁路工程 大体积混凝土 理论分析 温度裂缝 水化热 控制措施 

分 类 号：TU528[建筑科学—建筑技术科学]