作　　者： ;

机构地区： 汕头大学

出　　处： 《哈尔滨建筑大学学报》 1999年第1期43-47,共5页

摘　　要： 使正常养护28d的70个镀锌焊接钢丝网水泥试件持续受弯，最外层钢丝的计算应力达到腐蚀状态下容许值207N／mm2，再放入自制的以70℃干燥60min和40℃3．5％NaCl溶液浸渍30min为一周期的快速模拟海洋环境实验系统中，分别承受荷载一腐蚀共同作用1、3、7和18个月（480－8640个周期），再对这些试件进行弯曲疲劳－腐蚀试验。分析评估了影响钢丝网水泥抗荷载－腐蚀性能的因素，给出了破坏概率－应力水平－疲劳寿命（P－S－N）关系，指出不必计算裂缝宽度. 70 galvanized weldmesh ferrocement specimens were pre-deflected to the serviceability limit of 207N/mm2 stress in the outermost wire after 28 days normal curing. With the load sustained,they were stored in a self-made simulated sea water splash zone environment with the cyclic feature of '70℃ hot dry 60 minutes and 40℃ 3. 5% NaCl solution - immersion 30 minutes' for up to 1, 3, 7and 18 months (480 to 8640 cycles) before being tested for corrosion -fatigue. The factors influencing the behaviour of ferrocement under the joint action of load - corrosion are assessed and the Probability of Failure - Stress Level - Number of Cyclic Loads(P - S - N) relationships are put forward. It is pointed out that crack width does not need to be calculated.

关 键 词： 钢丝网水泥 腐蚀 弯曲疲劳 海洋环境

领　　域： [建筑科学]