Seaweed biopolymers as additives for unfired clay bricks

Dove, Cassandra A.; Bradley, Fiona F.; Patwardhan, Siddharth V.

doi:10.1617/s11527-016-0801-0

Cited by 39 publications

(27 citation statements)

References 69 publications

(83 reference statements)

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“…Xanthan gum is one of the most common biopolymers used in geotechnical engineering applications, such as soil stabilization (Chang et al 2015a;Im et al 2017;Latifi et al 2017;Lee et al 2017), mine tailings treatment (Chen et al 2015), erosion control (Qureshi et al 2017), adobe buildings (Chang et al 2015b;Dove et al 2016), and permeability control (Cabalar et al 2017;Martin et al 1996). However, most studies have focused on the macrobehavior of xanthan gum-treated soils without detailed consideration of the microscale soil-fluid interaction.…”

Section: Introductionmentioning

confidence: 99%

Soil consistency and interparticle characteristics of xanthan gum biopolymer–containing soils with pore-fluid variation

Chang

Kwon

et al. 2019

Can. Geotech. J.

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Biopolymer–soil technology is currently recognized as an environmentally friendly soil improvement method for geotechnical engineering practices. However, concerns exist regarding biopolymer fine-soil applications because the performance of biopolymers is based on an electrical interaction with clay or a pore fluid. Thus, the effect of water content and pore-fluid chemistry on biopolymer behavior in soil must first be clarified in terms of biopolymer applications. In this study, the liquid limits of xanthan gum biopolymer–treated clay–sand mixtures (clayey silt, kaolinite, montmorillonite, and sand) were obtained using three chemically distinct pore fluids (deionized water, 2 mol/L NaCl brine, and kerosene). Xanthan gum has contrary effects to the soil consistency, where the liquid limit can decrease via xanthan gum–induced particle aggregation or increase due to xanthan gum hydrogel formation. The clay-mineral type governed the xanthan gum behavior in the deionized water, while the pore-fluid chemistry governed the xanthan gum behavior in the brine and the kerosene.

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Section: Introductionmentioning

confidence: 99%

Soil consistency and interparticle characteristics of xanthan gum biopolymer–containing soils with pore-fluid variation

Chang

Kwon

et al. 2019

Can. Geotech. J.

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“…These polymers improve the crumbing in the soil and swell up when they get wet, and retain moisture for a longer period. Dove et al (2016) added that the alginates can form cross-linked gels through ion tropic gelation. This occurs when a soluble form of alginate, usually sodium alginate, is converted to an insoluble gel through the introduction of divalent metal cations such as Ca 2+ .…”

Section: B-dry -Sieved Aggregates (Dsa)mentioning

confidence: 99%

Interference between Organic Soil Conditioners Mixed with Synthetic Soil Conditioners to Improve Sandy Soil Productivity

El-Abdeen¹

2018

Journal of Soil Sciences and Agricultural Engineering

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A field experiment was carried out for two successive winter and summer seasons (2016)(2017) at Ismailia Agric. Res. Station in Ismailia Governorate, Egypt using wheat (Triticum sativa cv Giza 168) and peanut (Arachi shypogaea cv Giaz 5) crops to study the effect of organic soil conditioners individually or mixed with synthetic soil conditioners on physical and chemical properties of sandy soil, nutritional status and plant productivity. The experiment was arranged in split plots design with three replicates. Five forms of organic soil conditioners were applied as main plot consists of control (NPK), yeast sludge (YS) at rate of 2 kgfed -1 , commercial humic acids (HA at rate of 1 kgfed -1) , seaweed extract (SWE) at rate of 100 g fed -1 and filter mud (FM) at rate of 5 kgfed -1 ). While the sub main plot using synthetic soil conditioners as zero addition, carboxymethyl cellulose (CMC) at rate 2% and polyvinyl alcohol (PVA) at rate 0.2 %. Results cleared that the interference usage of organic soil conditioners in combination with synthetic soil conditioners had positively affect hydro-physical properties of the soil, i.e., decreasing soil bulk density, increasing total porosity along with dry stable aggregate, as well as, the superior treatment is SWE + CMC. In general, there is no valuable difference between SWE and organic residues, whereas, YS and FM have the same trend over to control. In addition, organic matter (OM) and available macronutrients N, P and K content in soil were increased significantly with all treatments applied compared to control, the maximum increases were observed with SWE application mixed with CMC. An opposite trend was obtained with both pH and EC values which generally decreased at all applied treatments especially with (SWE+ CMC) Therefore, the application of seaweed as organic soil conditioner individually or mixed with CMC or PVA which increased significantly both wheat and peanut biological yields, straw grain and/or seed, along with total N, P and K content as compared to either control or other organic treatments application. Moreover, obtained results showed highly significant correlation ( p< 0.05) between grain and/or yield and soil EC, OM, P and N in spite of none significant correlation with pH and K. Finally, it can be concluded that organic soil conditioner especially seaweed and sugar cane byproduct was enhanced and became more effective when applied with polymers especially CMC.

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“…Much research has been done to improve the physical properties of water absorption and capillarity in adobe using several stabilizers: Vilane (2010), Piattoni et al (2011), Millogo et al (2014, Corrêa et al (2015), Aguilar el al. (2016), Dove et al (2016), Hamard et al (2016), Laborel-Préneron et al (2016), Millogo et al (2016), Stazi et al (2016), Eires et al (2017) and Nakamatsu et al (2017).…”

Section: Introductionmentioning

confidence: 99%

Physical, Mechanical and Thermal Behavior of Adobe Stabilized With “Synthetic Termite Saliva”

et al. 2019

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Adobe is an efficient construction material for several reasons, such as its thermal comfort, sustainability, and lower energy cost, as well as the simplicity of its production and execution. However, challenges such as water absorption, capillarity, and compressive strength should be investigated to improve its physical and mechanical properties. "Synthetic termite saliva" (STS) is an excellent stabilizer with high cohesive and hydrophobic power. Therefore, the objective of this work was to evaluate the effects of STS incorporation into adobe, analyzing its physical, mechanical and thermal properties. Five treatments were studied: 0 (control); 0.1; 0.2; 0.4 and 0.8% STS by mass. These adobe samples were evaluated according to bulk density, linear shrinkage, capillarity, water absorption, thermal conductivity and compressive strength, according to Norma Técnica de Edificación (NTE) E0.80 testing using a new methodology. Linear shrinkage decreases from 2.7 to 1.91 cm with 0.4% STS. Capillarity decreases with the increasing amounts of STS. Water absorption decreased from 12.03 to 6.31% using 0.4% STS, and its mass was reduced from 779 to 19 grams. The thermal conductivity showed no differences between concentrations. The compressive strength was reduced but was still acceptable based on NTE E.080. The stabilization of the adobe using STS showed an improvement in its physical properties, mainly due to its hydrophobic power.

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Seaweed biopolymers as additives for unfired clay bricks

Cited by 39 publications

References 69 publications

Soil consistency and interparticle characteristics of xanthan gum biopolymer–containing soils with pore-fluid variation

Soil consistency and interparticle characteristics of xanthan gum biopolymer–containing soils with pore-fluid variation

Interference between Organic Soil Conditioners Mixed with Synthetic Soil Conditioners to Improve Sandy Soil Productivity

Physical, Mechanical and Thermal Behavior of Adobe Stabilized With “Synthetic Termite Saliva”

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