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Laboratory Study of Phosphogypsum, Stabilizers, and Tropical Soil Mixtures

Mascarenha, Márcia Maria dos Anjos

AbstractPhosphogypsum (PG) is a by-product of the phosphoric acid fertilizer industries that has possible applications in paving when stabilized with cement or lime. This study’s aim is to compare the mechanical performance of the hemi-hydrate (HH) and dihydrate (DH) mixes with tropical soil, lime, and cement. The results of physical, mechanical, and mineralogical tests are presented, which demonstrate that the use of HH in cement and lime mixes reduces the swelling of this material compared to the use of DH; in addition, HH provides better mechanical behavior. These findings indicate that DH has limited application in pavement construction, but when converted into HH and mixed with tropical soil or chemical stabilizers, its alternative uses are possible, and more content (approximately 90%) of this material can be used.

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Laboratory Study of Phosphogypsum, Stabilizers, and Tropical Soil Mixtures

Mascarenha, Márcia Maria dos Anjos

AbstractPhosphogypsum (PG) is a by-product of the phosphoric acid fertilizer industries that has possible applications in paving when stabilized with cement or lime. This study’s aim is to compare the mechanical performance of the hemi-hydrate (HH) and dihydrate (DH) mixes with tropical soil, lime, and cement. The results of physical, mechanical, and mineralogical tests are presented, which demonstrate that the use of HH in cement and lime mixes reduces the swelling of this material compared to the use of DH; in addition, HH provides better mechanical behavior. These findings indicate that DH has limited application in pavement construction, but when converted into HH and mixed with tropical soil or chemical stabilizers, its alternative uses are possible, and more content (approximately 90%) of this material can be used.

Laboratory Study of Phosphogypsum, Stabilizers, and Tropical Soil Mixtures

Mascarenha, Márcia Maria dos Anjos

AbstractPhosphogypsum (PG) is a by-product of the phosphoric acid fertilizer industries that has possible applications in paving when stabilized with cement or lime. This study’s aim is to compare the mechanical performance of the hemi-hydrate (HH) and dihydrate (DH) mixes with tropical soil, lime, and cement. The results of physical, mechanical, and mineralogical tests are presented, which demonstrate that the use of HH in cement and lime mixes reduces the swelling of this material compared to the use of DH; in addition, HH provides better mechanical behavior. These findings indicate that DH has limited application in pavement construction, but when converted into HH and mixed with tropical soil or chemical stabilizers, its alternative uses are possible, and more content (approximately 90%) of this material can be used.

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Title:

Laboratory Study of Phosphogypsum, Stabilizers, and Tropical Soil Mixtures

Contributors:

Mascarenha, Márcia Maria dos Anjos (author) / Curado, Tallyta da Silva / Silva, Millena Vasconcelos / Neto, Manoel Porfirio Cordão / de Rezende, Lilian Ribeiro / Metogo, Daniel Arthur Nnang / Bernucci, Liedi Legi Bariani

Published in:

Journal of materials in civil engineering

Publication date:

2016

ISSN:

DOI:

https://doi.org/10.1061/(ASCE)MT.1943-5533.0001711

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Zeitschrift , Werkstoff , Ingenieurbau

Classification:

BKL: 56.45 Baustoffkunde
Local classification TIB: 535/6520/6525/xxxx

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