碳纤维增强混凝土基本力学性能及单轴受压本构关系研究

发布时间：2018-03-08 13:51

本文选题：碳纤维　切入点：混凝土　出处：《新型建筑材料》2017年09期 　论文类型：期刊论文

【摘要】：通过试验研究了碳纤维体积掺量对混凝土基本力学性能及受压本构关系的影响。结果表明,随碳纤维掺量的增加,混凝土的抗拉、抗折、轴心抗压强度均先提高后降低,峰值应变、极限应变均逐渐增大;碳纤维掺量为0.8%时混凝土的抗拉、抗折强度最高,较未掺碳纤维的分别提高30.6%、19.1%。混凝土受压本构曲线上升段参数a受碳纤维掺量影响较小,但曲线下降段参数b随着碳纤维掺量的增加而逐渐减小,下降段曲线趋于平缓,混凝土延性逐渐增强。
[Abstract]:The effect of carbon fiber volume content on the basic mechanical properties and compressive constitutive relationship of concrete is studied. The results show that the tensile strength, flexural strength and axial compressive strength of concrete increase first and then decrease with the increase of carbon fiber content. The peak strain and limit strain increase gradually, and the tensile strength and flexural strength of concrete are the highest when the content of carbon fiber is 0.8, which is 30.6 ~ 19.1g than that of undoped carbon fiber respectively. The uplift parameter a of the compressive constitutive curve of concrete is less affected by the content of carbon fiber. But the parameter b of the descending section of the curve decreases with the increase of carbon fiber content, the curve of the descending section tends to be flat, and the ductility of concrete increases gradually.
【作者单位】：山西建筑职业技术学院;
【分类号】：TU528

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