Advances in the Use of Biological Stabilisers and Hyper-compaction for Sustainable Earthen Construction Materials

Muguda, Sravan; Lucas, G.; Hughes, Paul; Augarde, Charles E.; Cuccurullo, Alessia; Bruno, Agostino Walter; Perlot, Céline; Gallipoli, Domenico

doi:10.1007/978-981-13-5883-8_17

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Figure 6 shows the results of shear strength testing by adding Amylofax using the wet and heated mixing method. The wet mixing method is employed based on a previous study conducted by Seo et al [23], where their research suggested that wet mixing results in a more uniform distribution of the biopolymer mixture in the soil. The use of modified starch demonstrates a significant improvement in shear strength, reaching up to 833 kPa with an angle of internal friction of 57°.…”

Section: The Influence Of Adding Amylofax With a Wet And Hot Mixturementioning

confidence: 99%

Experimental Study of Cationic-Modified Biopolymer for Increasing the Shear Strength of Sand

Ardiana,

Lim,

Muljana

2024

JTSP

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The application of biopolymers as a more environmentally friendly alternative to cement has emerged as an interesting research subject.The purpose is to enhance the shear strength of sandy soils. In this article, the selected biopolymer is cationic-modified starch. It is expected that cationic starch will have less water absorption properties since modified starch has cationic groups in place of the OH- groups found in the normal starch. This cationic-modified starch namely Amylofax. Five types of samples are created for this testing, including Sample A is prepared with the composition of (silica sand + 2% Amylofax T1100 (w/w) + 20% water (w/w))., Sample B consists of (silica sand + 2% Amylofax T2200 (w/w) + 20% water (w/w))., Sample C is comprised of (silica sand + 2% Amylofax T1100 (w/w) + 2% Glucomannan (w/w) + 20% water (w/w)), Sample D consists of (silica sand + 2% Amylofax T2200 (w/w) + 2% Glucomannan (w/w) + 20% water (w/w)), and Sample E includes (Ottawa sand + 2% cement (w/w) + 20% water (w/w)). The samples were tested using a direct shear test apparatus to determine the soil shear strength parameters (c) cohesion and (Ø) internal friction angle. After conducting the tests on the sand samples with the addition of modified starch biopolymer (cationic starch), it was found that the cohesion value was 961kPa, and the internal friction angle was 63°. These results indicate higher shear strength values compared to sand mixed with natural starch.

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Section: The Influence Of Adding Amylofax With a Wet And Hot Mixturementioning

confidence: 99%

Experimental Study of Cationic-Modified Biopolymer for Increasing the Shear Strength of Sand

Ardiana,

Lim,

Muljana

2024

JTSP

View full text Add to dashboard Cite

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Durability and hygroscopic behaviour of biopolymer stabilised earthen construction materials

Muguda

Lucas

Hughes

et al. 2020

Construction and Building Materials

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Advances in the Use of Biological Stabilisers and Hyper-compaction for Sustainable Earthen Construction Materials

Abstract: Domenico (2019) 'Advances in the use of biological stabilisers and hyper-compaction for sustainable earthen construction materials.', in Earthen dwellings and structures. Singapore: Springer, pp. 191-201. Springer transactions in civil and environmental engineering.

Cited by 2 publications

References 12 publications

Experimental Study of Cationic-Modified Biopolymer for Increasing the Shear Strength of Sand

Experimental Study of Cationic-Modified Biopolymer for Increasing the Shear Strength of Sand

Durability and hygroscopic behaviour of biopolymer stabilised earthen construction materials

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