Abstract

Recently, Fibre Cement Board (FCB) due to its lightness and speed in construction and execution has been highly considered. In this paper, numerical and experimental studies have been carried out to achieve eco- friendly FCB. A total of 20 mixtures were prepared. Limestone powder (LP) and silica fume (SF) were used, as a partial replacement for cement, and perlite (PLT) as a replacement for sand in the predetermined mixtures. Polypropylene fibre (PP) and fibre-glass mesh (FGM) were also used to improve the mechanical behavior. The flexural strength, modulus of elasticity, density, and water absorption of the specimens were evaluated. . Numerical analysis was also implemented to simulate the testing configuration for the full-scaled FCB. The results showed that the minimum density corresponded to the perlite specimen, reinforced by 0.75% polypropylene fibre. In contrast, the flexural strength and modulus of elasticity were increased by 48% and 51%, respectively, compared to the reference one. . The results declared that using LP, with and without SF, should be limited by 5%. The numerical results of the small FCB model were precisely validated by the experimental specimens, which can be considered an appropriate assessment method to evaluate the performance of full-scaled FCB.

摘要

最近，纤维水泥板 (FCB) 由于其重量轻、施工和施工速度快而受到高度重视。在本文中，已经进行了数值和实验研究以实现生态友好型 FCB。总共制备了 20 种混合物。在预定的混合物中，使用石灰石粉 (LP) 和硅粉 (SF) 部分替代水泥，并使用珍珠岩 (PLT) 替代沙子。聚丙烯纤维 (PP) 和玻璃纤维网 (FGM) 也用于改善机械性能。评价了试样的弯曲强度、弹性模量、密度和吸水率。. 还实施了数值分析来模拟全尺寸 FCB 的测试配置。结果表明，最小密度对应于珍珠岩试件，用 0. 75% 聚丙烯纤维。相比之下，与参考材料相比，弯曲强度和弹性模量分别增加了 48% 和 51%。. 结果表明，无论是否使用 SF，使用 LP 都应限制在 5% 以内。小型 FCB 模型的数值结果得到了实验样本的精确验证，这可以被认为是评估全尺寸 FCB 性能的合适评估方法。