Cargando…

Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content

On the basis of determining the optimum content of polypropylene fiber reactive powder concrete (RPC), the influence of different steel fiber content on the compressive strength and splitting tensile strength of hybrid polypropylene-steel fiber RPC was studied. The particle morphology and pore param...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhong, Chunling, Liu, Mo, Zhang, Yunlong, Wang, Jing, Liang, Dong, Chang, Luyao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7288045/
https://www.ncbi.nlm.nih.gov/pubmed/32414112
http://dx.doi.org/10.3390/ma13102243
_version_ 1783545189186404352
author Zhong, Chunling
Liu, Mo
Zhang, Yunlong
Wang, Jing
Liang, Dong
Chang, Luyao
author_facet Zhong, Chunling
Liu, Mo
Zhang, Yunlong
Wang, Jing
Liang, Dong
Chang, Luyao
author_sort Zhong, Chunling
collection PubMed
description On the basis of determining the optimum content of polypropylene fiber reactive powder concrete (RPC), the influence of different steel fiber content on the compressive strength and splitting tensile strength of hybrid polypropylene-steel fiber RPC was studied. The particle morphology and pore parameters of hybrid polypropylene-steel fiber RPC were analyzed by combining scanning electron microscope (SEM) with image-pro plus (IPP) software. The results showed that the RPC ductility can be further improved on the basis of polypropylene fiber RPC, the compressive strength and splitting tensile strength of polypropylene fiber. The optimum content of hybrid polypropylene-steel fiber RPC is 0.15% polypropylene fiber, 1.75% steel fiber. Hybrid polypropylene-steel fiber RPC is mainly composed of particles with small particle size. The particle area ratio first increased and decreased with the increase of steel fiber content, and the maximum steel fiber content is 1.75%. The pore area ratio first decreased and increased with the increase of steel fiber content, and the pore area ratio is the smallest when the steel fiber content is 1.75%. The calculation methods of polypropylene fiber content and steel fiber content and 28-day RPC compressive strength and splitting tensile strength are proposed to select polypropylene fiber content and steel fiber content flexibly according to different engineering requirements, which can provide important guidance for the popularization and application of RPC in practical engineering.
format Online
Article
Text
id pubmed-7288045
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-72880452020-06-15 Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content Zhong, Chunling Liu, Mo Zhang, Yunlong Wang, Jing Liang, Dong Chang, Luyao Materials (Basel) Article On the basis of determining the optimum content of polypropylene fiber reactive powder concrete (RPC), the influence of different steel fiber content on the compressive strength and splitting tensile strength of hybrid polypropylene-steel fiber RPC was studied. The particle morphology and pore parameters of hybrid polypropylene-steel fiber RPC were analyzed by combining scanning electron microscope (SEM) with image-pro plus (IPP) software. The results showed that the RPC ductility can be further improved on the basis of polypropylene fiber RPC, the compressive strength and splitting tensile strength of polypropylene fiber. The optimum content of hybrid polypropylene-steel fiber RPC is 0.15% polypropylene fiber, 1.75% steel fiber. Hybrid polypropylene-steel fiber RPC is mainly composed of particles with small particle size. The particle area ratio first increased and decreased with the increase of steel fiber content, and the maximum steel fiber content is 1.75%. The pore area ratio first decreased and increased with the increase of steel fiber content, and the pore area ratio is the smallest when the steel fiber content is 1.75%. The calculation methods of polypropylene fiber content and steel fiber content and 28-day RPC compressive strength and splitting tensile strength are proposed to select polypropylene fiber content and steel fiber content flexibly according to different engineering requirements, which can provide important guidance for the popularization and application of RPC in practical engineering. MDPI 2020-05-13 /pmc/articles/PMC7288045/ /pubmed/32414112 http://dx.doi.org/10.3390/ma13102243 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhong, Chunling
Liu, Mo
Zhang, Yunlong
Wang, Jing
Liang, Dong
Chang, Luyao
Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content
title Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content
title_full Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content
title_fullStr Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content
title_full_unstemmed Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content
title_short Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content
title_sort study on mechanical properties of hybrid polypropylene-steel fiber rpc and computational method of fiber content
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7288045/
https://www.ncbi.nlm.nih.gov/pubmed/32414112
http://dx.doi.org/10.3390/ma13102243
work_keys_str_mv AT zhongchunling studyonmechanicalpropertiesofhybridpolypropylenesteelfiberrpcandcomputationalmethodoffibercontent
AT liumo studyonmechanicalpropertiesofhybridpolypropylenesteelfiberrpcandcomputationalmethodoffibercontent
AT zhangyunlong studyonmechanicalpropertiesofhybridpolypropylenesteelfiberrpcandcomputationalmethodoffibercontent
AT wangjing studyonmechanicalpropertiesofhybridpolypropylenesteelfiberrpcandcomputationalmethodoffibercontent
AT liangdong studyonmechanicalpropertiesofhybridpolypropylenesteelfiberrpcandcomputationalmethodoffibercontent
AT changluyao studyonmechanicalpropertiesofhybridpolypropylenesteelfiberrpcandcomputationalmethodoffibercontent