现场早期砂浆锚杆腐蚀现状的取样研究

Sampling Investigation of on Situation Early Anchor Corrosion in-situ

本文概述了关于从已建工程中取出的早期使用3—28年不同令期的锚杆和17年期现场缩尺试验锚杆的腐蚀现状，对其锈蚀状况和使用环境因素做了宏观观察和分析，对其点蚀、坑蚀、失重、腐蚀速度和强度等力学性能进行了较全面的测试和分析，取得了不同令期的锚杆锈蚀状况和影响其耐久性及使用寿命的第一手资料，为我们开展锚杆腐蚀的防护对策研究提供了有力支持。

In this paper, the corrosion of anchor, which was used in early work for 3 - 28 years and some reduced scale anchor for test in situ for 17 years, is discussed. Firstly, the macroscopical observation and analysis of the corrosion environment and the situation of anchor has been done; and an all- round test and analysis on the dot corrosion, hole corrosion, weightlessness, corrosion speed and strength loss rate and etc have been carried out; then, the first-hand datum of durability and service llfe of the anchor at different year is acquired which offered us assisstance in investigating the protective countermeasure about the corrosion of anchor.