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Orientation effect on the physical and mechanical properties of strand cement boards
Construction and Building Materials ( IF 7.4 ) Pub Date : 2021-01-06 , DOI: 10.1016/j.conbuildmat.2020.122121
Matheus Roberto Cabral , Erika Yukari Nakanishi , Sérgio Francisco Santos , André Luis Christoforo , Juliano Fiorelli

The aim of this study is to assess the effect of the strand orientation on the physical and mechanical properties of strand cement boards. To evaluate the orientation effect, non-oriented strand cement boards (i) and oriented strand cement boards (ii) were produced and assessed using two different wood species, with three-strand contents. The boards physical and mechanical properties were evaluated following the recommendations of the European Standards EN 317, EN 323 and EN 310, respectively. For non-oriented and oriented strand cement boards, physical properties of thickness swelling (TS) showed that almost all strand contents studied for both wood species were close to that required by ISO 8335. With regard to the orientation effect on the mechanical properties of the modulus of rupture (MOR) and modulus of elasticity (MOE) of the boards. It was found a significant improvement for the MOR and MOE of the oriented boards in comparison to those non-oriented. In addition, the boards tested on the parallel of the strand performed better mechanically (around 119% for MOR and 106% for MOE) in comparison with the boards tested on the perpendicular of the strand.



中文翻译:

取向对绞线水泥板物理机械性能的影响

这项研究的目的是评估绞线取向对绞线水泥板物理和机械性能的影响。为了评估定向效果,使用两种不同的具有三链含量的木材来生产和评估非定向绞线水泥板(i)和定向绞线水泥板(ii)。分别根据欧洲标准EN 317,EN 323和EN 310的建议评估板的物理和机械性能。对于无定向和定向绞合水泥板,厚度膨胀(TS)的物理性能表明,对两种木材所研究的几乎所有绞合线含量均接近ISO 8335的要求。板的断裂模量(MOR)和弹性模量(MOE)。与非定向板相比,定向板的MOR和MOE有了显着改善。此外,与在钢绞线垂直线上测试的板相比,在钢绞线平行线上测试的板的机械性能更好(MOR为119%,MOE为106%)。

更新日期:2021-01-06
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