Thermal performance of sawdust and lime-mud concrete masonry units

Madrid, Maggi; Orbe, Aimar; Carré, Hélène; García, Yokasta

doi:10.1016/j.conbuildmat.2018.02.193

Cited by 29 publications

(23 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The main objective of this research is to determine the thermal properties of walls made of three types of blocks, by means of FEM simulations [42]. These results were compared to those obtained from experimental tests [34], in order to validate the numerical model. In addition, the thermal behavior of the blocks was analyzed and compared when incorporating insulation material in their holes.…”

Section: Aims and Methodologymentioning

confidence: 99%

See 1 more Smart Citation

Thermal Performance Assessment of Walls Made of Three Types of Sustainable Concrete Blocks by Means of FEM and Validated through an Extensive Measurement Campaign

et al. 2021

Self Cite

View full text Add to dashboard Cite

The thermal behavior of three different walls, made with and without by-products, is assessed by means of the Finite Element Method, aiming to evaluate its performance in terms of the sustainable construction of the blocks. Results were compared to those obtained from an experimental campaign, aiming at validation of the model. The by-products used for the blocks were “lime sludge” and “sawdust”, whose performance was compared against the traditional blocks made of concrete as a reference, aiming to demonstrate its sustainability, showing decreases of the thermal transmittance up to 10.5%. Additionally, following the same methodology, the thermal behavior of these above-mentioned blocks but now with added internal insulation made of “recycled cellulose” was assessed, showing higher decreases up to 25.5%, increasing sustainability by addressing an additional reduction in waste, so the right combination of using by-products and the insulating filler in their cavities has been revealed as a promising way of optimizing the walls, offering a relevant improvement in energy savings. Finally, when comparing the U-values of the blocks made of concrete without insulation versus those made of by-products, with insulation, improvements up to 33.3% were reached. The adaptation of the procedure through a moisture correction factor was also incorporated.

show abstract

Section: Aims and Methodologymentioning

confidence: 99%

“…In previous studies conducted by [34,35], experimental tests were carried out with three sample walls (Length × Width × Height) 1190 mm × 190 mm × 1000 mm, by using three types of blocks 400 mm × 200 mm × 200 mm. Two of the groups of blocks studied presented a replacement in their components, varying their volume.…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance Assessment of Walls Made of Three Types of Sustainable Concrete Blocks by Means of FEM and Validated through an Extensive Measurement Campaign

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Several studies have been carried out by other researchers on sawdust concrete cubes to identify their mechanical properties and their potential. These studies used different variables in terms of sawdust particle size, sawdust waste source and sawdust quantities to replace sand [10] [11][12] [13]. Different variables have given different but consistent results.…”

Section: Sustainable Concrete With Sawdustmentioning

confidence: 99%

Concrete using sawdust as partial replacement of sand : Is it strong and does not endanger health?

Suliman

Razak²,

Mansor

et al. 2019

MATEC Web Conf.

View full text Add to dashboard Cite

This study was conducted to investigate the effectiveness of concrete using sawdust to partially replace the river sand which could reduce both environmental problems and construction cost. In this study, sawdust concrete has been produced where the river sand is replaced with sawdust by 5%, 10% and 15% of the total sand volume. Both wet concrete and hardened concrete (cubes specimens) were tested through material testing and cube testing to obtain the most optimum sawdust concrete design. In addition, specimens have also been tested in environmental laboratory to identify the extent of hazardous use of sawdust to consumer health. This is because the dust used is the waste taken from the unknown root of the level of cleanliness. The result shows that the most optimum design for producing sawdust concrete is that with 10% replacement of river sand. The result is based on the compressive strength obtained. The results of environmental study also show that this sawdust concrete is free from any harmful to health contaminants.

show abstract

“…Lime mud is used in many applications, such as building materials (bricks and cements) [10], wastewater treatment [11], and agricultural soils [12]. However, high costs involved in pretreatment processes such as drying, desalting, or dewatering makes lime mud a secondary option.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Lime Mud Waste from Paper Mills for Efficient Phosphorus Removal

Khan

Ramakrishna

et al. 2019

Sustainability

View full text Add to dashboard Cite

In this study, we utilized lime mud waste from paper mills to synthesize calcium hydroxide (Ca(OH)2) nanoparticles (NPs) and investigate their application for the removal of phosphorus from aqueous solution. The NPs, composed of green portlandite with hexagonal shape, were successfully produced using a precipitation method at moderately high temperature. The crystal structure and characterization of the prepared Ca(OH)2 nanoparticles were analyzed by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The effects of Ca(OH)2 NP dosage and contact time on removal of phosphorus were also investigated. The results show that the green portlandite NPs can effectively remove phosphorus from aqueous solution. The phosphorus removal efficiencies within 10 min are 53%, 72%, 78%, 98%, and 100% with the different mass ratios of Ca(OH)2 NPs/phosphorus (CNPs/P) of 2.2, 3.5, 4.4, 5.3, and 6.2, respectively. Due to the efficient phosphorus removal, the calcium hydroxide nanoparticles (CNPs) could be a potential candidate for this application in domestic or industrial wastewater treatment.

show abstract

Thermal performance of sawdust and lime-mud concrete masonry units

Cited by 29 publications

References 44 publications

Thermal Performance Assessment of Walls Made of Three Types of Sustainable Concrete Blocks by Means of FEM and Validated through an Extensive Measurement Campaign

Thermal Performance Assessment of Walls Made of Three Types of Sustainable Concrete Blocks by Means of FEM and Validated through an Extensive Measurement Campaign

Concrete using sawdust as partial replacement of sand : Is it strong and does not endanger health?

Utilization of Lime Mud Waste from Paper Mills for Efficient Phosphorus Removal

Contact Info

Product

Resources

About