水库大坝外掺MgO微膨胀混凝土温升研究

STUDY ON TEMPERATURE RAISING OF MICRO-EXPANSIVE CONCRETE WITH MgO MIXED OUTSIDE FOR CONSTRUCTION OF MAJOR DAM OF A RESERVOIR

本文介绍了在贵阳市北郊水厂沙老河水库大坝的施工中 ,通过掺入外加剂来减少水化热 ,采用了外掺 Mg O微膨胀混凝土施工这一新技术 ,实现了不分缝连续浇注、快速作业 。

During construction of the major dam of a reservoir, a new construction technique was adopted by using the micro expansive concrete with MgO mixed outside,in which the heat due to hydration was reduced.The temperature supervision was enhanced and the engineering quality was guaranteed,therefore better economic benefits were obtained.The paper introduces briefly the study on the situations of temperature raising for the micro expansive concrete with MgO mixed outside.