随州旧城改造积极推广新工艺、新材料
2013
08/06
12:23
3052
随州市在城区旧城改造施工中，以科技创新为动力进行技术革新改造，积极推广新工艺、新材料的应用，不断提高城区道路维修、改造的科学化水平，工期大幅压缩，质量显著提高。
施工工艺上，打破在水泥路面上加铺沥青砼路面的常规设计方案，首次采用采用碎石化工艺进行旧路面改造，大大提高了“白改黑”改造工程的进度，减少了施工对交通通行的影响，节省了改造费用。该方案从理论上完全解决了反射裂缝的产生，对提高“白改黑”路面的使用年限起到非常关键的作用。
材料运用上，首次采用改性沥青及聚酯纤维。城区道路改造面层上使用SBS(I-D类)改性沥青，与原沥青相比其高温粘度增大，软化点升高，耐久性和高温稳定性明显提高。在沥青砼上面层（AC-13）掺加2.25‰聚酯纤维（每吨沥青砼含2.25Kg聚酯纤维），以提高沥青砼的低温抗裂性并增加疲劳寿命。两项新材料的使用，大大提高了道路工程的耐久性。
发布人：
xineeg
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