Dynamic behaviour of adobe bricks in compression: The role of fibres and water content at various loading rates

Piani, T. Li; Weerheijm, J.; Peroni, Marco; Koene, L.; Krabbenborg, Dennis; Solomos, George; Sluys, L.J.

doi:10.1016/j.conbuildmat.2019.117038

Cited by 41 publications

(18 citation statements)

References 57 publications

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“…On the other hand, the lower compressive strength for treatments added with 3.0% tire at 28 curing days and for both tire percentages after accelerated aging is linked to the lower bricks compaction degree (Table 5), lower density (Table 7), and higher porosity (Figure 2). According to Piani et al (2020); Hidalgo et al (2019) and Piani et al (2018), porosity signi cantly affects the composites' compressive strength. The bricks showed increased compressive strength after accelerated aging, except for the treatment added with 3.0% tire.…”

Section: Mechanical Characterizationmentioning

confidence: 99%

“…For bricks added with PET at 28 curing days and for bricks added with tire at 28 curing days and after accelerated aging, the increase in the number of particles decreased the compressive strength values. The higher concentration of particles in the brick matrix decreases density and increases porosity, which is a determining factor for the compressive strength decrease of bricks (Jin et al 2018;Hidalgo et al 2019;Piani et al 2020). Only the treatment added with 1.5% PET before the durability test and the treatments added with 1.5% and 3.0% PET after accelerated aging, met the ABCP (1989) and NBR 10834 standards (ABCP 2013), which set 2.0 MPa as the minimum compressive strength value and also IS 1725 standard (IS 1982) that establishes 1.96 MPa as the minimum strength for class 20.…”

Section: Mechanical Characterizationmentioning

confidence: 99%

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Soil-Cement Bricks Development Using Polymeric Waste

Metzker

Sabino

Mendes

et al. 2021

Preprint

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This research aimed to evaluate the effect of adding different polymeric waste percentages and types on the physical, mechanical, thermal and durability properties of soil-cement bricks. Tire and PET (Polyethylene Terephthalate) waste were evaluated at 1.5 and 3.0% percentages. The soil was characterized in terms of shrinkage, compaction, consistency limits, particle size and chemical analyses, whereas the waste particles were submitted to morphological characterization. The bricks were produced in an automatic press with a 90: 10 (m/m) soil: cement ratio. The soil-cement bricks were characterized by density, moisture, water absorption, loss of mass by immersion, compressive strength, thermal conductivity and microstructural analysis. PET waste stood out for its use as reinforcement in soil-cement bricks. The best performance was obtained for bricks reinforced with 1.5% PET, which showed a significant compressive strength improvement, meeting the marketing standards criteria, even after the durability test, as well as obtaining the lowest thermal conductivity values. The percentage increase from 1.5% to 3.0% fostered a significant water absorption and loss of mass increase, as well as a significant compressive strength reduction of the bricks.

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Section: Mechanical Characterizationmentioning

confidence: 99%

Section: Mechanical Characterizationmentioning

confidence: 99%

Soil-Cement Bricks Development Using Polymeric Waste

Metzker

Sabino

Mendes

et al. 2021

Preprint

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“…Table 3 and Table 4 present the studies on the development of unfired earth blocks with various agro and non-agro wastes. [53], [54], [55], [56], [57], [58], [59], [60], [61], [62], [71], [73], [74], [78], [83], [88], [101]…”

Section: Non-agro Wastesmentioning

confidence: 99%

Application of agro and non-agro waste materials for unfired earth blocks construction: A review

Jannat

Hussien

Abdullah

et al. 2020

Construction and Building Materials

107

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The production process of conventional building materials consumes a high amount of energy which has a negative impact on the environment. The use of locally available materials and upgradation of traditional techniques can be a good option for sustainable development. Consequently, earth has attracted the attention of the researchers as a building construction material for its availability and lower environmental impact. On the other hand, in developing countries waste disposal from the agricultural and industrial sectors raises another serious concern. The scientists have introduced such waste additives into the earth matrix to improve its performance. Therefore, the present paper reviews the state-of-the-art of research on the effects of these various agro and non-agro wastes in the production of unfired earth blocks. This study is divided into three sections: The first section outlines the different types of waste materials and earth blocks considered in the selected papers. The second part deals in depth with the test results of the different properties (density, water absorption, compressive strength, flexural strength and thermal conductivity) of unfired earth blocks containing waste materials. The last section analyses and compares the results with the current earth-building construction standards. The literature survey presents that the waste materials have a clear potential to partly replace earth by complying with certain requirements. Moreover, the application of such wastes for the development of building construction materials provides a solution that decreases energy usage as well as contributes to effective waste management. Future research on establishing guidelines and standards for the development and production of these sustainable unfired earth building materials is recommended.

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“…The moisture entrapped within an adobe wall can reduce the compressive and tensile strengths of the adobe bricks and mud mortar and, consequently, compromise its ability to resist structural and environmental loads [8][9][10][11][12]. Several approaches to improve moisture resistance of adobe, such as additives, plastering materials, and laser material treatments [13][14][15][16], have been studied.…”

Section: Introductionmentioning

confidence: 99%

Influence of Wall Thickness and Water Content on the Out-of-Plane Stability of Adobe Walls

Aqtash

Bandini

2020

Infrastructures

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This paper presents the results of a numerical study using the finite element method to assess the effect of wall thickness and a moist region along the wall base on the out-of-plane lateral stability of adobe walls. The models consisted of cantilever unreinforced adobe walls with a thickness of 25 cm, 30 cm, and 40 cm. Numerical analyses were performed for four lengths (L) of the moist region and for dry walls. The moist region was modelled with material characteristics corresponding to partially saturated and nearly saturated adobe. The results showed the detrimental effect of moisture along the lower portion of the wall on the out-of-plane lateral strength. The out-of-plane lateral strength reduction ratio dropped significantly as L increased. A high slenderness ratio was found to be critical for cantilever adobe walls when L extended beyond half of the wall length. The results provided insights concerning the role of wall thickness in the stability against overturning.

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Dynamic behaviour of adobe bricks in compression: The role of fibres and water content at various loading rates

Cited by 41 publications

References 57 publications

Soil-Cement Bricks Development Using Polymeric Waste

Soil-Cement Bricks Development Using Polymeric Waste

Application of agro and non-agro waste materials for unfired earth blocks construction: A review

Influence of Wall Thickness and Water Content on the Out-of-Plane Stability of Adobe Walls

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