承载喷射混凝土碳化试验研究

发布时间：2018-04-02 06:04

本文选题：喷射混凝土　切入点：碳化　出处：《混凝土》2014年12期

【摘要】：通过对承载喷射混凝土进行快速碳化试验,分析了施工方式、钢纤维、应力水平对混凝土碳化深度的影响规律,同时对其碳化后的力学性能进行了探讨。试验结果表明,承载喷射混凝土的碳化深度与碳化时间的平方根成正比;其抗碳化能力优于同条件下的浇筑混凝土,但是劣于喷射钢纤维混凝土;弯拉应力水平越高,混凝土碳化深度也越大;建立了应力加速因子与应力水平的关系。碳化使喷射混凝土的抗折强度降低,但掺入钢纤维后,其抗折强度相对有所改善。
[Abstract]:Through the rapid carbonation test of bearing sprayed concrete, analyzes the construction method of steel fiber, influence the stress level of concrete carbonation depth, at the same time on the mechanical properties of carbide were discussed. The experimental results show that the bearing of sprayed concrete carbonation depth is proportional to the square root of the concrete carbonization time; the anti carbonation ability is better than under the same conditions, but inferior to the sprayed steel fiber reinforced concrete; flexural tensile stress is higher, the carbonation depth of concrete is greater; the stress accelerating factor and stress level. The carbon sprayed concrete flexural strength decreased, but the incorporation of steel fiber, the the flexural strength is relatively improved.

【作者单位】：西安建筑科技大学;
【基金】：国家自然科学基金(51278403) 教育部长江学者和创新团队发展计划(IRT13089)
【分类号】：TU528.53

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