Effect of Adding Sawdust to Cement on its Thermal Conductivity and Compressive Strength

Hafidh, Sanaa A.; Abdullah, Thamer Adnan; Hashim, Fanar G.; Mohmoud, Bashar K.

doi:10.1088/1757-899x/1094/1/012047

Cited by 8 publications

(3 citation statements)

References 10 publications

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“…The experiments showed that the compressive strength of the concrete decreased with an increasing wood chip content. Hafidh et al [ 12 ] and other scholars [ 13 , 14 ] have also reported similar findings. Fadiel et al [ 15 ] prepared wood concrete by replacing fine aggregate by volume with wood chips at different replacement levels of 5%~50% and proposed a formula for estimating the compressive strength based on the wood chip content.…”

Section: Introductionsupporting

confidence: 74%

Properties of Light Cementitious Composite Materials with Waste Wood Chips

Guo

Wang

et al. 2022

Materials

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The CO2 emissions from the cement industry and the production of waste wood chips are increasing with the rapid growth of the construction industry. In order to develop a green environmental protection building material with low thermal conductivity and up to standard mechanical properties, in this study, pine waste wood chips were mixed into cement-based materials as fine aggregate, and three different kinds of cementitious binders were used, including sulfur aluminate cement (SAC), ordinary Portland cement (OPC), and granulated blast furnace slag (GBFS), to prepare a recycled light cementitious composite material. The mechanical, thermal conductivity, shrinkage, water absorption, and pore structure of a wood chip light cementitious composite material were studied by changing the Ch/B (the mass ratio of wood chip to binder). The results showed that the strength, dry density, and thermal conductivity of the specimens decreased significantly with the increase in the Ch/B, while the shrinkage, water absorption, and pore size increased with the increase in the Ch/B. By comparing three different kinds of cementitious binders, the dry density of the material prepared with OPC was 942 kg/m3, the compressive strength of the material prepared with SAC was 13.5 MPa, and the thermal conductivity of the material prepared with slag was the lowest at 0.15 W/m/K. From the perspective of low-cost and low-carbon emissions, it was determined that the best way to prepare a light cementitious composite with waste wood chips is to use granulated blast furnace slag (GBFS) as the cementitious binder.

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Section: Introductionsupporting

confidence: 74%

Properties of Light Cementitious Composite Materials with Waste Wood Chips

Guo

Wang

et al. 2022

Materials

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“…Additional research has demonstrated that the thermal conductivity of concrete mixes can be reduced by incorporating wood waste [13][14][15][16]. Moreover, Ahmed et al [17] recommended the use of sawdust-based concrete to improve the energy efficiency of buildings.…”

Section: Wood-based Concretesmentioning

confidence: 99%

Experimental and Numerical Investigation of Hygrothermal Transfer through Bio-Based Materials: An Application to Wood–Cement Walls

Bakkour,

Ouldboukhitine,

Biwole

et al. 2023

Buildings

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In the context of the energy transition, new construction materials are emerging, notably bio-based materials such as wood concrete. This paper investigates the hygrothermal performance of walls constructed with wood–cement concrete. First, the thermal properties of wooden concrete, namely thermal conductivity, effusivity, and diffusivity, are experimentally characterized in both dry and wet conditions. Second, in situ measurements are carried out on a house in Lyon, a city in France, constructed with mono-layered wood–cement walls. This involves monitoring the temperature and relative humidity levels both inside and outside the building, as well as at three distinct positions within the wood walls over a 6-month period (from 20 April 2023 to 20 October 2023). The hygrothermal analysis at the center of the wall reveals that the wood wall effectively moderates fluctuations in the external temperature and relative humidity. Following this, a numerical study is performed to check the reliability of the adopted Reduced Heat, Air, and Mass (HAM) model to reproduce the hygrothermal performance of the wood–cement wall. The results show a strong agreement between the simulated and measured data, confirming the applicability of the ‘Reduced HAM’ model for the prediction of the hygrothermal behavior of wood–cement walls.

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“…Relevant studies [26] have shown that the noise of particleboards prepared using wood and cementitious materials is in the range of 32-100 Hz, and the thermal conductivity is 0.29 Wm −1 K −1 . In addition, wood with different particle sizes contributes differently to the thermal-insulation effect [27]. In summary, the application of waste wood in construction engineering can have a significant contribution.…”

Section: Introductionmentioning

confidence: 99%

Study on geopolymer recycled foam concrete based on waste wood flour and its engineering performance

Xu,

Wang,

Guo

et al. 2023

Preprint

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In order to improve the application of forestry by-products, This study explores the possibility of using waste wood flour to prepare geopolymer recycled foam concrete (GRFC) in architectural applications to reduce the use of mineral aggregates and improve the thermal insulation performance of the concrete. Compared with mineral aggregate, waste wood flour has advantages in density, toughness and water absorption. In addition, the addition of waste wood powder and foam at the same time will change the structural morphology of ordinary foam concrete. Therefore, this experiment explores the water retention performance, thermal insulation performance, mechanical properties (compressive strength, flexural strength, bond strength), toughness, shrinkage rate and compactness under different foam and waste wood powder (WFA) content, which makes an exploration for replacing ordinary mortar and ordinary foam concrete.The results showed that the addition of WFA strengthens the stability between pores in the honeycomb structure, and inhibits the loss of foam in the newly mixed slurry due to different internal and external humidity. It is also an effective way to improve the water retention performance, thermal insulation performance and embrittlement of ordinary mortar and foamed concrete. However, foam seems to have a negative effect on interfacial transition zone (ITZ) of wood flour and cement pastes.

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Effect of Adding Sawdust to Cement on its Thermal Conductivity and Compressive Strength

Cited by 8 publications

References 10 publications

Properties of Light Cementitious Composite Materials with Waste Wood Chips

Properties of Light Cementitious Composite Materials with Waste Wood Chips

Experimental and Numerical Investigation of Hygrothermal Transfer through Bio-Based Materials: An Application to Wood–Cement Walls

Study on geopolymer recycled foam concrete based on waste wood flour and its engineering performance

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