The Influence of Nano-SiO2 and Recycled Polypropylene Plastic Content on Physical, Mechanical, and Shrinkage Properties of Mortar
This work is aimed to study the possibility of recycling plastic waste (polypropylene (PP)) as aggregate instead of sand in the manufacturing of mortar or concrete. For this, an experimental study was carried out to evaluate the influence of nano-SiO2 and recycled PP plastic particles' content...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/6960216 |
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| author | Haiming Chen Yangchen Xu Donglei Zhang Lingxia Huang Yuntao Zhu Le Huang |
| author_facet | Haiming Chen Yangchen Xu Donglei Zhang Lingxia Huang Yuntao Zhu Le Huang |
| author_sort | Haiming Chen |
| collection | DOAJ |
| description | This work is aimed to study the possibility of recycling plastic waste (polypropylene (PP)) as aggregate instead of sand in the manufacturing of mortar or concrete. For this, an experimental study was carried out to evaluate the influence of nano-SiO2 and recycled PP plastic particles' content on physical, mechanical, and shrinkage properties and microstructure of the mortars with recycled PP plastic particles. The sand is substituted with the recycled PP plastic particles at dosages (0%, 20%, 40%, and 60% by volume of the sand). The nano-SiO2 content is 5% by weight of cement. The physical (porosity, water absorption, and density), mechanical (compressive and flexural strength) and shrinkage properties of the mortars were evaluated, and a complementary study on microstructure of the interface between cementitious matrix and PP plastic particles was made. The measurements of physical and mechanical properties showed that PP-filled mortar had lower density and better toughness (higher ratio of flexural strength to compressive strength). However, the compressive strength and flexural strength of PP-filled mortar is reduced, and the porosity, water absorption, autogenous shrinkage, and dry shrinkage increased as compared to normal cement mortar. The addition of nano-SiO2 reduced the porosity, water absorption, and drying shrinkage of PP-filled mortar and effectively improved the mechanical properties, but increased its autogenous shrinkage. A microscopic study of the interfacial zone (plastic-binder) has shown that there is poor adhesion between PP plastic particles and cement paste. From this work, it is found that recycled PP plastic waste has a great potential to be a construction material. It can be used as partial replacement of natural aggregates instead. |
| format | Article |
| id | doaj-art-4983b4d061cb4820a40f3896fd7161c6 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-4983b4d061cb4820a40f3896fd7161c62025-02-03T01:23:29ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/69602166960216The Influence of Nano-SiO2 and Recycled Polypropylene Plastic Content on Physical, Mechanical, and Shrinkage Properties of MortarHaiming Chen0Yangchen Xu1Donglei Zhang2Lingxia Huang3Yuntao Zhu4Le Huang5School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaThis work is aimed to study the possibility of recycling plastic waste (polypropylene (PP)) as aggregate instead of sand in the manufacturing of mortar or concrete. For this, an experimental study was carried out to evaluate the influence of nano-SiO2 and recycled PP plastic particles' content on physical, mechanical, and shrinkage properties and microstructure of the mortars with recycled PP plastic particles. The sand is substituted with the recycled PP plastic particles at dosages (0%, 20%, 40%, and 60% by volume of the sand). The nano-SiO2 content is 5% by weight of cement. The physical (porosity, water absorption, and density), mechanical (compressive and flexural strength) and shrinkage properties of the mortars were evaluated, and a complementary study on microstructure of the interface between cementitious matrix and PP plastic particles was made. The measurements of physical and mechanical properties showed that PP-filled mortar had lower density and better toughness (higher ratio of flexural strength to compressive strength). However, the compressive strength and flexural strength of PP-filled mortar is reduced, and the porosity, water absorption, autogenous shrinkage, and dry shrinkage increased as compared to normal cement mortar. The addition of nano-SiO2 reduced the porosity, water absorption, and drying shrinkage of PP-filled mortar and effectively improved the mechanical properties, but increased its autogenous shrinkage. A microscopic study of the interfacial zone (plastic-binder) has shown that there is poor adhesion between PP plastic particles and cement paste. From this work, it is found that recycled PP plastic waste has a great potential to be a construction material. It can be used as partial replacement of natural aggregates instead.http://dx.doi.org/10.1155/2019/6960216 |
| spellingShingle | Haiming Chen Yangchen Xu Donglei Zhang Lingxia Huang Yuntao Zhu Le Huang The Influence of Nano-SiO2 and Recycled Polypropylene Plastic Content on Physical, Mechanical, and Shrinkage Properties of Mortar Advances in Civil Engineering |
| title | The Influence of Nano-SiO2 and Recycled Polypropylene Plastic Content on Physical, Mechanical, and Shrinkage Properties of Mortar |
| title_full | The Influence of Nano-SiO2 and Recycled Polypropylene Plastic Content on Physical, Mechanical, and Shrinkage Properties of Mortar |
| title_fullStr | The Influence of Nano-SiO2 and Recycled Polypropylene Plastic Content on Physical, Mechanical, and Shrinkage Properties of Mortar |
| title_full_unstemmed | The Influence of Nano-SiO2 and Recycled Polypropylene Plastic Content on Physical, Mechanical, and Shrinkage Properties of Mortar |
| title_short | The Influence of Nano-SiO2 and Recycled Polypropylene Plastic Content on Physical, Mechanical, and Shrinkage Properties of Mortar |
| title_sort | influence of nano sio2 and recycled polypropylene plastic content on physical mechanical and shrinkage properties of mortar |
| url | http://dx.doi.org/10.1155/2019/6960216 |
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