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An Experimental Termite Enzyme-Based Stabilizer for Treating Aged Pavement Laterites
https://orcid.org/http://orcid.org/0000-0002-6877-3769
An experimental investigation is described aimed at developing a novel enzyme-based admixture for enhancing strength of old laterite gravels. Termite saliva binding technology was reviewed and extended to a corresponding recycling technological demand. Four trial gravel and anthill samples were used. Termite extracts were examined for stabilization propensity followed by admixture generation using bio-chemistry analytical methods. Test results show that adding 100 mg of mucopolysaccharides to reaction products of cellulase (50 units/mL) and cellulose (0.3 g) for 1 h produces an enzyme-based admixture influencing performance of laterite gravels. Plasticity and shrinkage of gravels reduced significantly, soaked CBR increased threefold from 25.3 ± 2.6% to 77.3 ± 1.2%, while resilient modulus increased by 20–39%. Total cost reductions of 15.2, 16.7 and 8.7%, respectively, were observed for asphalt, single dressed and double dressed pavements attributed to the admixture. Field studies on utilization of this admixture are required before drawing technical recommendations.
An Experimental Termite Enzyme-Based Stabilizer for Treating Aged Pavement Laterites
https://orcid.org/http://orcid.org/0000-0002-6877-3769
An experimental investigation is described aimed at developing a novel enzyme-based admixture for enhancing strength of old laterite gravels. Termite saliva binding technology was reviewed and extended to a corresponding recycling technological demand. Four trial gravel and anthill samples were used. Termite extracts were examined for stabilization propensity followed by admixture generation using bio-chemistry analytical methods. Test results show that adding 100 mg of mucopolysaccharides to reaction products of cellulase (50 units/mL) and cellulose (0.3 g) for 1 h produces an enzyme-based admixture influencing performance of laterite gravels. Plasticity and shrinkage of gravels reduced significantly, soaked CBR increased threefold from 25.3 ± 2.6% to 77.3 ± 1.2%, while resilient modulus increased by 20–39%. Total cost reductions of 15.2, 16.7 and 8.7%, respectively, were observed for asphalt, single dressed and double dressed pavements attributed to the admixture. Field studies on utilization of this admixture are required before drawing technical recommendations.
An Experimental Termite Enzyme-Based Stabilizer for Treating Aged Pavement Laterites
https://orcid.org/http://orcid.org/0000-0002-6877-3769
An experimental investigation is described aimed at developing a novel enzyme-based admixture for enhancing strength of old laterite gravels. Termite saliva binding technology was reviewed and extended to a corresponding recycling technological demand. Four trial gravel and anthill samples were used. Termite extracts were examined for stabilization propensity followed by admixture generation using bio-chemistry analytical methods. Test results show that adding 100 mg of mucopolysaccharides to reaction products of cellulase (50 units/mL) and cellulose (0.3 g) for 1 h produces an enzyme-based admixture influencing performance of laterite gravels. Plasticity and shrinkage of gravels reduced significantly, soaked CBR increased threefold from 25.3 ± 2.6% to 77.3 ± 1.2%, while resilient modulus increased by 20–39%. Total cost reductions of 15.2, 16.7 and 8.7%, respectively, were observed for asphalt, single dressed and double dressed pavements attributed to the admixture. Field studies on utilization of this admixture are required before drawing technical recommendations.
An Experimental Termite Enzyme-Based Stabilizer for Treating Aged Pavement Laterites
Int. J. Pavement Res. Technol.
Bagampadde, Umaru (author) / Kaddu, David (author) / Hawumba, Joseph Fuuna (author) / Ntale, Muhammad (author)
International Journal of Pavement Research and Technology ; 16 ; 781-795
2023-07-01
15 pages
Article (Journal)
Electronic Resource
English
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