Impact of aggregate coating with a PEC elastomer on properties of lightweight flax shive concrete

Khazma, Mahmoud; Goullieux, Adeline; Dheilly, Rose-Marie; Laidoudi, Boubker; Quéneudec, M.

doi:10.1016/j.indcrop.2010.08.005

Cited by 23 publications

(10 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…coated flax shives with a poly(polyethylene glycol-co-citric acid) elastomer [66] or with pectin/polyethylnimin [68] to decrease filler water absorption and drying shrinkage with an improvement of mechanical properties. These treatments, however, delayed setting time of fresh concrete due to the presence of pectin [132] and increased the thermal conductivity of hardened concrete.…”

Section: Coating or Impregnationmentioning

confidence: 99%

Treatments of plant biomass for cementitious building materials – A review

Vo¹,

Navard²

2016

Construction and Building Materials

114

View full text Add to dashboard Cite

International audienceThe use of plant biomass for developing energy efficient and low cost construction materials is an emerging field in building construction and civil engineering. Although the biomass-based cement and concrete composites have several advantages, such as low densities, low amount of CO2 gas emission, good thermal and acoustic insulation, there are also disadvantages or open questions like the durability of biomass in alkaline cement matrix, the high absorption of water and the cement-biomass compatibility, all deteriorating concrete mechanical properties, which are already intrinsically low due to the low mechanical properties of biomass-based fillers. This review gives the necessary basis in plant structure and composition for understanding how and why many treatments tested on biomass for overcoming the above-mentioned difficulties are acting. This paper reviews research papers and patents on the treatments tested to improve the mechanical properties, durability and compatibility of biomass for its use as concrete fillers for building materials

show abstract

Section: Coating or Impregnationmentioning

confidence: 99%

Treatments of plant biomass for cementitious building materials – A review

Vo¹,

Navard²

2016

Construction and Building Materials

114

View full text Add to dashboard Cite

show abstract

“…A few particle coating treatments to optimize the water absorption and the chemical interactions between flax shives and lime or cement have been reported in the literature. These included coating using a mixture of cement and sucrose [40], a PEC elastomer, [94], and linseed oil [93]. These treatments improve the mechanical properties and behavior of flax concrete in water and slightly reduce their thermal performance.…”

Section: Fiber Plant Wastesmentioning

confidence: 99%

A Review of the Multi-Physical Characteristics of Plant Aggregates and Their Effects on the Properties of Plant-Based Concrete

Ratsimbazafy¹,

Laborel-Préneron²,

Magniont³

et al. 2021

RPM

View full text Add to dashboard Cite

The use of plant aggregates obtained from agricultural co-products mixed with mineral binders to form eco-friendly insulating building materials has been initiated for a few years to bring environmentally friendly solutions to the construction sector. Several studies on different agro-resources have already been carried out, providing various information about the properties of plant aggregates and plant-based concrete. However, the characteristics of the agricultural co-product, which allow it to qualify as a plant aggregate for plant-based concrete, are not yet very clear despite the multitude of data, especially on hemp concrete. Therefore, it is important to gather numerous but very disparate pieces of information available in the literature concerning the properties of plant aggregates and their correlations with composites. This review is based on the results of 120 articles and aims to identify the characterization methods and the multi-physical properties of plant aggregates affecting those of plant-based concrete and to propose additional factors that could influence the properties of the composites. A total of 18 plant aggregates of different origins used for plant-based concrete have been listed in the literature. In France, hemp shiv is the most studied one, but its quantity is quite low unlike cereal or oilseed straws and wood transformation residues. With the existence of several characterization methods, properties like microstructure, particle size distribution, bulk density, water absorption capacity, and chemical composition of aggregates are easily and frequently determined. In contrast, data on the apparent density of particles, the skeleton density, and the hygro-thermal properties of aggregates are rare. The particle size, density, and porosity have been identified as important parameters influencing the properties of the composites. Other parameters related to the behavior of the aggregates under wet compaction and compression of their stacking can also predict the physical and mechanical properties of the obtained plant-based concrete. Dosages of the constituents should be preferred as formulation parameters for future studies assessing the impact of the aggregate properties on the composites.

show abstract

“…In this context, the eco-materials development in construction is an environmental and sustainable approach, whose issues are available in terms of climate change (limiting greenhouse effect), saving natural resources, health and comfort [2]. However, among the objectives of the incorporation of lignocellulosic materials in the cement matrix composites is to get a lightweight concrete, which is an important research topic because of its insulating properties [3].…”

Section: Introductionmentioning

confidence: 99%

“…However, two types of concretes was studied, namely: the sand concrete without wood shavings (SC-W-WS), which represents the reference concrete and the optimal composition of sand concrete with wood shavings (SC-WS) which wood shavings content is 60 kg/m 3 .…”

Section: Introductionmentioning

confidence: 99%

Effect of wall orientation of the sand concrete lightened by wood shavings on the time lag and the decrement factor

et al. 2020

Self Cite

View full text Add to dashboard Cite

The development of new lightweight concrete based on the valorization of local materials and waste in construction is an environmental and sustainable approach. In this context, the studied composite is a sand concrete (dune and alluvial) lightened by wood shavings to improve its thermophysical properties. The objective is to investigate the orientation effect of an outside wall made with this material in an arid environment on the thermophysical properties of the wall, namely the time lag (Φ) and the decrement factor (f). The experimental study has been dedicated, first of all, to determine the optimal composition of sand concrete lightened by wood shavings, which the content is 60 kg/m3. This composition is a compromise between studied compactness and workability. Then, to study the thermal properties of the sand concrete without wood shavings (SC-W-WS) and sand concrete lightened by wood shavings (SC-WS). Finally, a numerical simulation using the EnergyPlus software was made to study the wall orientation effect designed in the Laghouat city (south of Algeria). The results obtained show that the substitution of sand by wood shavings has improved thermal properties of the wood sand concrete namely: the thermal conductivity, the specific heat and the thermal diffusivity. The simulation results are very interesting, because all orientations are right for the sand concrete lightened by wood shavings (SC-WS). Nevertheless, the north and the west orientations are wrong in the case of the sand concrete (SC-W-WS). However, the east orientation has the longest time lag, which is consistent with the literature. The advantage of these results is in favour of concrete having improved thermophysical properties.

show abstract

Impact of aggregate coating with a PEC elastomer on properties of lightweight flax shive concrete

Cited by 23 publications

References 27 publications

Treatments of plant biomass for cementitious building materials – A review

Treatments of plant biomass for cementitious building materials – A review

A Review of the Multi-Physical Characteristics of Plant Aggregates and Their Effects on the Properties of Plant-Based Concrete

Effect of wall orientation of the sand concrete lightened by wood shavings on the time lag and the decrement factor

Contact Info

Product

Resources

About