期刊论文

Experimental Study on the Flexural Strength of Botanic-fiber’s Thermal Insulation and Non-dismantle Formwork

中文

硅酸盐通报

1001-1625

2019

38

3

872-877

10.16552/j.cnki.issn1001-1625.2019.03.047

湖南省研究生基金(CX2017B463).

本校为第一机构

为探究植物纤维保温免拆模板的抗折性能及含水率对抗折强度构成的影响,本研究设计了自然状态、标准状态和浸水24 h状态下植物纤维保温免拆模板抗折试件,针对三种状态试件的抗折破坏形态进行系统分析,并以标准状态试件抗折强度和位移大小与有限元建模分析结果进行对比。结果表明:三种状态试件开裂前,应力和应变大致成正比;开裂后,裂缝便在植物纤维保温层中向上快速开展,并随着试验荷载增大发生断裂,折断裂缝基本保持直线状,破坏过程变形明显,呈塑性表现性质。试验数据表明,植物纤维保温免拆模板随着含水率增大呈软化趋势,其抗折强度明显降低,变形增大。标准状态试件抗折强度和位移两项指标试验值...

In order to explore the impact of the flexural resistance and water content of botanic-fiber’s thermal insulation and non-dismantle formwork on the composition of the flexural strength,the nondisassembled template flexural specimens for plant fiber insulation under natural conditions,standard conditions and water immersion for 24 h were designed.The state-of-the-art specimens were systematically analyzed for their fracture-resistance failures,and the flexural strength and displacement of the specimens in the standard state were compared with t...