RILEM TC 275-HDB round-robin tests and proposals: moisture buffer value of vegetal concrete

IF 3.4 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Materials and Structures Pub Date : 2025-01-14 DOI:10.1617/s11527-024-02550-4

Florence Collet, Stijn Mertens, Paulina Faria

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引用次数: 0

Abstract

Previous studies on the moisture buffering characterization of hemp concrete have shown some discrepancies and difficulties for comparison. The aim of this paper is to raise warning points and define a robust protocol for Moisture Buffer Value (MBV) measurement of vegetal concrete. The applicability of the NORDTEST protocol was assessed by two round robin tests (RRT) on an industrial hemp concrete. Seven laboratories participated to the RRT. The first RRT specified a method for the conditioning of specimens prior to the MBV test, without added recommendation. Based on the shortcomings of the first RRT, a second RRT was performed with additional recommendations. For the test, the specimens should be representative of in-situ ones regarding exchange surface and orientation versus moisture flux. RRT2 confirmed that the exchange surface finishing widely affects the MBV results. Moreover, it underlined the effect of air velocity and the least efficiency of climate chambers with Peltier technology. The results obtained following this more detailed protocol were comparable between laboratories, suggesting their robustness to assess MBV of vegetal concrete.

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来源期刊

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.