Experimental investigation of hygrothermal behavior of wooden-frame house under real climate conditions

Rahim, M. Kaysar; Djedjig, Rabah; Wu, Dongxia; Bennacer, Rachid; Ganaoui, Mohammed El

doi:10.1016/j.enbenv.2021.09.002

Cited by 10 publications

(4 citation statements)

References 31 publications

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“…Moldy straw is therefore not suggested for use in bio-sourced concrete, as it can modify the material’s properties. On top of that, it was also mentioned in the literature that mold can affect the hygrothermal performance of bio-sourced materials [ 63 ].…”

Section: Resultsmentioning

confidence: 99%

Physical and Mechanical Properties of Rapeseed Straw Concrete

et al. 2022

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This paper investigates an innovative building material based on rapeseed concrete. This material is a non-load-bearing insulating concrete, which is intended for use in the construction of wood-frame walls thanks to its thermophysical properties. It is composed of particles of rapeseed straw, lime, and cement. First, this work proposes to characterize rapeseed straw aggregates according to the place of cultivation, the year of harvest, and the size of the straw strands. For this purpose, straws of three different origins and different years of harvest were chosen. Aggregate sizes of 10 mm and 20 mm in length were selected. In a second step, this study focuses on the effect of the type of rapeseed straw aggregates on the mechanical resistance and thermal conductivity of bio-based concrete. The results obtained showed that the influence of the different parameters on the compressive strength was stronger than that on the thermal conductivity. On the one hand, rapeseed concrete made with 10 mm straw exhibited a lower thermal conductivity, averaging at 0.073 W.m−1.K−1. On the other hand, concrete manufactured with the 20 mm size aggregates demonstrated a higher mechanical strength, which remained relatively low and closer to 0.22 MPa. Finally, 20 mm-long aggregates offered the best compromise between mechanical and thermal resistance.

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Section: Resultsmentioning

confidence: 99%

Physical and Mechanical Properties of Rapeseed Straw Concrete

et al. 2022

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“…The HDPE used in this study was recovered from green chlorine containers. Some of its properties are as follows: density of 0.96 g/cm 3 and melt flow index (190 • C/2.16 kg) of 0.72 g/10 min. After collection, the labels were removed and washed to remove impurities; to obtain the granules (with dimensions of ~5 mm × ~2 mm × ~0.2 mm), an electric carpentry plane was used.…”

Section: Methodsmentioning

confidence: 99%

“…In the construction industry, there is a notable and ever-growing interest in lightweight wall systems and lightweight steel framing (LSF), which are commonly applied in buildings where walls are not considered as loading elements but as partition walls in interiors; these systems are composed of galvanized steel frames with fixed lightweight panels in the framework, which are manufactured from gypsum, cement, or wood [1]. However, LSF systems are prone to decreased durability due to exposure to warm, humid local weather where moisture has a key role [2]; excessive moisture results in mold formation in localized points and significantly reduces the serviceability of the envelope as a whole [3], leading to the degradation of the matrix and thus affecting physical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Sustainable WPC Production: A Novel Method Using Recycled High-Density Polyethylene and Wood Veneer

Canto-Borges,

Cruz,

Nahuat-Sansores

et al. 2023

Recycling

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This research work is focused on the development of an alternative method for manufacturing Wood Plastic Composite (WPC) panels based on Wood Veneers (WVs) and High-Density Polyethylene (HDPE) through compression molding, which enhances the physical properties, particularly, water absorption and moisture content. The aim of the present research was to develop alternative panels to replace commercial ones, which are heavily affected by hot, humid climates. In this context, the study began with the design process, which consisted of the collection and processing of primary material, production of the additional components necessary for the manufacturing process, determination of the WV ratio, and preparation of the samples. Thereafter, physical and mechanical tests were carried out on WPC, HDPE (control), commercial gypsum boards (GBs), plywood (PW), and medium density fiberboard (MDF) samples. The results indicate that the method applied to manufacture the WPC samples improved physical properties, achieving a water uptake of less than 4% in both proportions of replacement tested, in contrast to commercial panels, which reached values between 10% and 40%. In addition, a greater load capacity was achieved for lower thick elements.

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“…These facilities differ only in the way convective boundary conditions were controlled. The wall scale can be divided into exposure to controlled conditions in the climate chamber (including one-sided and doubled-sided responses) [93,[118][119][120][121][122] or natural outdoor conditions on one side (including single-layer and multilayer walls) [2,[124][125][126].…”

Section: Experimental Validationmentioning

confidence: 99%

A Review on Numerical Modeling of the Hygrothermal Behavior of Building Envelopes Incorporating Phase Change Materials

Sawadogo,

Godin,

Duquesne

et al. 2023

Buildings

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Buildings are submitted to various external and internal solicitations that could affect its energy performance. Among these solicitations, temperature and moisture play a crucial role and could irrevocably affect the comfort of the occupants and the indoor air quality of the living environment. To assess the impact of the solicitation on building performance, a precise modeling of the heat, air, and moisture transfer phenomenon is necessary. This work proposes an extensive review of the hygrothermal models for building envelopes. The different models are divided into nodal and HAM techniques for heat, air, and moisture (HAM) transfer models. The HAM approach has been classified based on four driving potentials: moisture content, relative humidity, capillary pressure, and vapor pressure. Phase change materials (PCMs), alongside hygroscopic materials, enhance building thermal capacity and energy efficiency. There are various approaches to studying phase changes, with enthalpy-based and heat capacity approaches being the most popular. Building performance can be improved by combining PCM thermal inertia with hygroscopic moisture management. This review has exhibited the need for numerical models that address phase change and moisture behavior in these hybrid materials, capable of controlling temperature and humidity.

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Experimental investigation of hygrothermal behavior of wooden-frame house under real climate conditions

Cited by 10 publications

References 31 publications

Physical and Mechanical Properties of Rapeseed Straw Concrete

Physical and Mechanical Properties of Rapeseed Straw Concrete

Sustainable WPC Production: A Novel Method Using Recycled High-Density Polyethylene and Wood Veneer

A Review on Numerical Modeling of the Hygrothermal Behavior of Building Envelopes Incorporating Phase Change Materials

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