【摘要】 通过对预应力钢绞线稳定化处理及破断应力松弛试验 ,分析了稳定化处理前后强度、塑性、松弛率指标的变化趋势 :PC钢绞线的松弛率在稳定化处理后 10 0 0h的松弛率比未处理的松弛率降低 71.0 1%～ 84 .84 % ,满足强度、塑性及应力松弛要求的最佳工艺参数为工艺温度 375℃ ,张应力为 0 .4 8σb。更多还原

【Abstract】 To make experiments on the stabilizing treatment of PC steel strand and the breaking stress relaxation.The change trend in strength,plasticity and relaxation rate of the PC steel strand before and after stabilizing treatment are analyzed.The 1?000?hour stress relaxation rate of the strands decrease 71.01%～84.84% after stabilizing treatment than before.The optimum process parameters which can meet the needs of strength,plasticity and stress relaxation are that the stabilizing temperature is at 375?℃ and the tensile stress is 0.48 σ b.更多还原