含有回收纤维素纤维的纤维水泥材料测试

克日 什托, 托马 斯·, 马特 乌斯
波兰土木工程学院

摘要

本文表明了使用回收的废纸纤维素纤维对受湿气污染的纤维水泥板性能的影响的研究结果。本研究测试了
四个系列的纤维水泥板；一个没有使用回收纤维素纤维的参考纤维水泥板构成了其中一个系列，其他三个系列由
不同含量的回收纤维素纤维的板材组成--占总纤维素纤维含量的 10%到 50%。纤维水泥板的试样通过在水中存放
1-96小时而受到水分的污染。随后，本研究测试了它们的基本物理和机械参数，即质量含水量、吸收性和断裂模量
（MOR）。然后，在三点弯曲过程中，本研究通过声发射对试样进行了研究。人工神经网络被用来分析声发射测试结
果。测试清楚地表明，回收的废纸纤维素纤维的数量和在水中储存的时间对板材有不利的影响，导致其降解。这反
映在人工神经网络识别的声发射（AE）事件数的减少上，在试样的三点弯曲过程中伴随着纤维的断裂。为了更详细
地了解测试的纤维水泥板结构中发生的变化，本研究通过扫描电子显微镜进行了光学检查。

关键词

纤维水泥板；回收纤维素纤维；非破坏性测试；声发射

参考

[1]Gorzela ´nczyk T, Schabowicz K. Effect of freeze–

thaw cycling on the failure of fibre-cement boards, assessed

using acoustic emission method and artificial neural network.

Materials 2019; 12: 2181.

[2]Adamczak-Bugno A, Gorzela ´nczyk T, Krampikowska

A, et al. Non-destructive testing of the structure of fibrecement materials by means of a scanning electron microscope.

Bad. Nieniszcz. Diagn. 2017; 3: 20–23.

[3]Claramunt J, Ardanuy M, García-Hortal JA.

Effect of drying and rewetting cycles on the structure and

physicochemical characteristics of softwood fibres for

reinforcement of cementitious composites. Carbohydr. Polym.

2010; 79: 200–205.

[4]Mohr BJ, Nanko H, Kurtis KE. Durability of kraft

pulp fibre-cement composites to wet/dry cycling. Cem. Concr.

Compos. 2005; 27: 435–448.

[5]Pizzol VD, Mendes LM, Savastano H, et al.

Mineralogical and microstructural changes promoted by

accelerated carbonation and ageing cycles of hybrid fibre–

cement composites. Constr. Build. Mater. 2014; 68: 750–756.

[6]Adamczak-Bugno A, Swit G, Krampikowska A. Timefrequency analysis of acoustic emission signals ´ generated by

cement-fiber boards during bending test. MATEC Web Conf.

2018; 174: 1–10.

[7]Li Z, Zhou X, Bin S. Fibre-Cement extrudates with

perlite subjected to high temperatures. J. Mater. Civ. Eng.

2004; 3: 221–229.

[8]Kaczmarek M, Piwakowski B, Drelich R. Noncontact

Ultrasonic Nondestructive Techniques: State of the Art and

Their Use in Civil Engineering. J. Infrastruct. Syst. 2017; 23:

45–56.

[9]D ˛ebowski T, Lewandowski M, Mackiewicz S, et al.

Ultrasonic tests of fibre-cement boards (in Polish). Przegl ˛ad

Spawalnictwa 2016; 10: 69–71.

[10]Drelich R, Gorzelanczyk T, Pakuła M, et al.

Automated control of cellulose fibre cement boards with a noncontact ultrasound scanner. Autom. Constr. 2015; 57: 55–63.

[11]Schabowicz K, Gorzela ´nczyk T. A non-destructive

methodology for the testing of fibre cement boards by means of

a non-contact ultrasound scanner. Constr. Build. Mater. 2016;

102: 200–207.