Published 2014 | Version v1
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Determination of the most favorable experimental conditions for obtaining asphalt emulsions modified with discarded polymers in the reconstruction of pavements

Creators

Description

The most favorable experimental conditions are determined for the production of asphalt emulsions modified with tire scrap rubber, petroleum material and recycled asphalt in the reconstruction of flexible pavements in a slow breaking process. Asphalt emulsions are made with 65% V/V of fluidized asphalt at different conditions of operation and composition of soap solution. The equipment of a centrifugal pump and a colloidal mill are used. Two different compositions are employed to make soap solutions. The best conditions to prepare the asphalt emulsions in the pilot plant have been: a stirring speed of 2100 rpm in the centrifugal pump and a speed of 3300 rpm of the colloidal mill. Asphaltic grouts made with asphalt emulsion modified to 1% m/m of rubber have shown the best coverage in the stripping test, evidencing little asphalt release, high adhesion of the asphalt on the aggregate and good stability. Asphalt emulsions with rubber are recommended with a granulometry that passes the No. 200 mesh for rubber and use the indicated equipment to carry out the process of asphalt modification to obtain better results in the performance of asphalt emulsion

Availability note (English)

Available from Biblioteca Luis Demetrio Tinoco, Universidad de Costa Rica

Abstract (Spanish)

Las condiciones experimentales mas favorables son determinadas para la obtencion de emulsiones asfalticas modificadas con hule de desecho de llanta, material petreo y asfalto reciclado en la reconstruccion de pavimentos flexibles en un proceso de rompimiento lento. Emulsiones asfalticas son elaboradas con un 65% V/V de asfalto fluidificado a diferentes condiciones de operacion y composicion de solucion jabonosa. El equipo de una bomba centrifuga y un molino coloidal son utilizados. Dos composiciones diferentes son empleadas para elaborar las soluciones jabonosas. Las mejores condiciones para elaborar las emulsiones asfalticas en la planta piloto han sido: una velocidad de agitacion de 2100 rpm en la bomba centrifuga y una velocidad de 3300 rpm del molino coloidal. Las lechadas asfalticas elaboradas con emulsion asfaltica modificada a 1% m/m de caucho han mostrado el mejor cubrimiento en la prueba de desnudamiento, evidenciando poco desprendimiento de asfalto, alta adherencia del asfalto sobre el agregado y buena estabilidad. Emulsiones asfalticas con caucho son recomendadas con una granulometria que pase la malla No. 200 para el caucho y utilizar el equipo indicado para realizar el proceso de modificacion de asfalto para obtener mejores resultados en el desempeno de la emulsion asfaltica

Additional details

Additional titles

Original title (Spanish)
Determinacion de las condiciones experimentales mas favorables para la obtencion de emulsiones asfalticas modificadas con polimeros desechados en la reconstruccion de pavimentos

Publishing Information

Imprint Place
San Jose (Costa Rica)
Imprint Pagination
189 p.

INIS

Country of Publication
Costa Rica
Country of Input or Organization
Costa Rica
INIS RN
48047477
Subject category
S36: MATERIALS SCIENCE; S42: ENGINEERING;
Resource subtype / Literary indicator
Numerical Data, Thesis, Non-conventional Literature
Descriptors DEI
ASPHALTS; CHEMICAL ANALYSIS; EMULSIFICATION; EXPERIMENTAL DATA; GROUTING; PAVEMENTS; PETROLEUM RESIDUES; POLYMERS; QUALITY CONTROL; ROAD OILS; RUBBER INDUSTRY; TESTING; TIRES; WASTE PRODUCT UTILIZATION
Descriptors DEC
BITUMENS; CONTROL; DATA; ENERGY SOURCES; FOSSIL FUELS; FUELS; INDUSTRY; INFORMATION; NUMERICAL DATA; OILS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; PETROLEUM; PETROLEUM FRACTIONS; TAR

Optional Information

Notes
Figs.; tabs., refs.