Mechanical strength, mass loss and volumetric changes of drying adobe matrices combined with kaolin and fine soil particles

Concha-Riedel, J.; Antico, F.C.; López‐Querol, Susana

doi:10.1016/j.conbuildmat.2021.125246

Cited by 7 publications

(3 citation statements)

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“…A second challenge for the analysis of earthen blocks is the broad range of soils used for their production, as has been previously pointed out in the literature [9]. Low consensus on the optimal soil type for this use has been achieved, as some authors propose an amount of clay for the blocks [4], [10], whilst others do not [9], [11]. This hinders the ability to create standards for earth block production, as the physicochemical properties of each employed soil might vary vastly.…”

Section: Introductionmentioning

confidence: 99%

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Unsaturated Geomechanical and Physicochemical Characterisation of Soils Used for Adobe Blocks

Concha-Riedel

López‐Querol

2023

Lecture Notes in Civil Engineering

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A mechanical and physicochemical characterisation of soil used for adobe block production is presented in this paper, considering a geomechanical framework. The main research objectives were to apply the partially saturated soil mechanics theory and obtain some of the soil's physicochemical characteristics. The soil used in this research was extracted from Putaendo, Chile, as it is representative of the vernacular building of that region. The soil was classified as fine sand, with little proportion of low plasticity fines. Further inspection showed a 7% content of organic matter. The unsaturated shear strength of the soil was obtained using a conventional shear box test, coupled with the soil-water characteristic curve (which was obtained using the filter paper technique) to estimate suction values. The soil-water characteristic curve had a similar shape as for other sands previously reported in the literature, but with a higher air entry and residual values. Results show that shear strength increases for drier soil samples, reaching an asymptotic value after the air entry suction of the soil. It is concluded that shear box tests without suction control can be used to estimate the unsaturated strength of soils and that the organic matter in soils can influence its cohesive strength, although further research on this aspect is required.

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Section: Introductionmentioning

confidence: 99%

“…This hinders the ability to create standards for earth block production, as the physicochemical properties of each employed soil might vary vastly. As an example, in their study, [11] showed that soils with identical classifications can produce contrasting physical and mechanical properties when used for adobe blocks matrices production.…”

Section: Introductionmentioning

confidence: 99%

Unsaturated Geomechanical and Physicochemical Characterisation of Soils Used for Adobe Blocks

Concha-Riedel

López‐Querol

2023

Lecture Notes in Civil Engineering

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“…Although soil is the base material for these blocks, its characteristics are usually far from ideal for CEB production, and stabilizers need to be added in order to enhance the physical properties of the CEBs, i.e., improving their mechanical strength and weathering resistance, as well as reducing clay contraction (Lima et al, 2012). In terms of improving the mechanical strength of CEBs, as with traditional adobes, many additives have been used for stabilization (Concha-Riedel et al, 2021;Rodríguez Cuervo, 2020), ranging from natural substances such as mucilage aloe, casein and cellulose (Vissac et al, 2017) to petroleum products such as bitumen emulsions (Arteaga Paucar & Loja Saula, 2018). However, Portland cement has always been the most typical stabilizer (Malkanthi et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

The effect of local pozzolans and lime additions on the mineralogical, physical and mechanical properties of compressed earth blocks in Argentina

Cabrera

Elert²,

Guilarducci³

et al. 2022

rdlc

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The purpose of this research is to evaluate the mineralogical, physical, and mechanical properties of compressed earth blocks (CEB) stabilized with lime and mineral admixtures easily obtained in Argentina: natural pozzolans and brick powder. the admixture mineralogical composition and their pozzolanic potential as well as the development of hydraulic phases upon reaction with calcium hydroxide (lime) were determined, emphasizing the formation of hydrated cementing compounds. Samples with different percentages of lime and mineral additions were prepared in order to test their compressive strength, wet erosion resistance, and water absorption, and contrasting the results with those of their counterparts stabilized exclusively with lime or cement. The results obtained allow us to affirm that both the brick powder and the pozzolan used have pozzolanic properties and, in combination with calcium hydroxide, form amorphous phases of C-(A)-S-H. However, the use of small amounts of both additions in combination with hydrated air lime in the manufacture of CEB, compared to CEB samples stabilized only with hydrated air lime, adversely affected their physical and mechanical properties.

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Heterogeneous Fenton for Removal Rhodamine-B by Iron-bearing Attapulgite Granular Catalysts

Zhou

Yang

et al. 2023

Water Air Soil Pollut

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Mechanical strength, mass loss and volumetric changes of drying adobe matrices combined with kaolin and fine soil particles

Cited by 7 publications

References 50 publications

Unsaturated Geomechanical and Physicochemical Characterisation of Soils Used for Adobe Blocks

Unsaturated Geomechanical and Physicochemical Characterisation of Soils Used for Adobe Blocks

The effect of local pozzolans and lime additions on the mineralogical, physical and mechanical properties of compressed earth blocks in Argentina

Heterogeneous Fenton for Removal Rhodamine-B by Iron-bearing Attapulgite Granular Catalysts

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