刍议小浪底工程大体积混凝土的温度与裂缝控制

Humble Opinions on Control of Temperature and Crack of Mass Concrete in Xiaolangdi Project

温度变化导致混凝土裂缝 ,是混凝土工程设计者和施工者都感棘手的问题 ,对此人们进行了大量的研究 ,在施工阶段温控和限制裂缝方面也取得了进展 ,但不能说此问题已经完全解决。随着为了解决更大体积混凝土坝的施工不断改进施工设备与工艺过程 ,而大大加快施工速度 ,大体积混凝土温控问题的复杂性和重要性日益突出。小浪底工程对大体积混凝土采用多种措施 ,有效地减少了裂缝的发生数量、频率和严重的裂缝。因此 。

The problem of concrete cracks due to temperature change is a difficult issue for the designer and construction personnel of concrete projects, for which a lot of study has been done and certain success has been reached in temperature control and crack control during construction. However, we can not say that the problem has been solved completely. Since the continuous improvement of construction equipment and technology is made to meet the construction of larger mass concrete dam , and the construction rate is speeded up, the complication and importance of temperature control in mass concrete becomes more and more significant. Various measures have been taken for the mass concrete construction in the Xiaolangdi Project, so that the quantity, frequency and seriousness of concrete cracks have been effectively reduced. It proved necessary to adopt the proper method and procedure of temperature control.