Influence of the addition of "synthetic termite saliva" in the compressive strength and water absorption of compacted soil-cement

Faria, Obede Borges; Battistelle, Rosane Aparecida Gomes; Neves, Célia de Figueiredo Cordeiro

doi:10.1590/s1678-86212016000300096

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…The second factor is that with the greater addition of STS, the water loss will be faster; therefore, cracks may occur in its drying process, reducing its resistance to compression. Faria et al (2016), using STS with cement in soilcement, obtained a significant increase in the resistance to compression; whereas Corrêa et al (2014b), using only STS in several proportions, obtained small differences in the resistance to compression. This result shows that to improve the compressive strength of the adobes, it is necessary use STS with other stabilizers.…”

Section: Resultsmentioning

confidence: 91%

“…Corrêa et al (2015), using STS at a ratio of 1: 1500 (0.067% by mass), stabilized an adobe soil that had previously disintegrated in contact with water by decreasing the water absorption by 15%. Faria et al (2016), using the STS at 0.1% (1: 1000) in soil-cement brick, found a 13.11% improvement in water absorption. Variation coefficient (%) 9.2 * One of the 5 samples was significantly damaged.…”

Section: Resultsmentioning

confidence: 98%

“…Corrêa et al (2014aCorrêa et al ( , 2014bCorrêa et al ( , 2015, found excellent results in the physical-mechanical properties of adobe, mainly due to the stabilization when the adobe came in contact with water. In soil-cement, Faria et al (2016) found satisfactory results using STS. Therefore, the use of "synthetic termite saliva" is studied because it is a nontoxic chemical derived from natural oils (babassu, castor bean and others) that has hydrophobic and cohesive properties in soils.…”

Section: Introductionmentioning

confidence: 91%

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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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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 98%