2023
DOI: 10.3390/buildings13112755
|View full text |Cite
|
Sign up to set email alerts
|

Mechanical, Chloride Permeation, and Freeze–Thaw Resistance of Recycled Micronized Powder Polypropylene-Fiber-Engineered Cementitious Composites

Lei Zheng,
Jinzhi Zhou

Abstract: Research on engineered cementitious composites was carried out using recycled micronized powder from waste construction waste as a substitute for cement. Consequently, this paper focuses on the investigation of recycled micronized powder (RMP) as the subject of study. Using RMP-PP-ECCA0 as the control group, we explored the impact of polypropylene fiber content (0.5%, 1%, 1.5%, 2%) and the substitution rate of RMP (10%, 20%, 30%, 40%) on the mechanical properties, resistance to chloride ion penetration, and fr… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1

Citation Types

0
1
0

Year Published

2024
2024
2024
2024

Publication Types

Select...
2

Relationship

0
2

Authors

Journals

citations
Cited by 2 publications
(1 citation statement)
references
References 49 publications
0
1
0
Order By: Relevance
“…Under split tensile stress, the low modulus of elasticity of polypropylene fibers allows them to withstand considerable deformation without fracturing, thereby increasing the concrete's load-bearing capacity. The variation in the effect of fiber dosage on compressive strength, increasing initially and then decreasing, can be attributed to the ability of an appropriate amount of fibers to fill the micropores and microcracks in concrete, acting as bridges [38], thus effectively preventing crack expansion and thereby enhancing compressive strength [39,40]. However, when the fiber admixture surpasses the critical value, the fiber dispersion becomes poor, and hydration products fail to completely encapsulate the fibers, resulting in excessive fiber aggregation and agglomerate formation in the concrete [41].…”
Section: Split Tensile Strengthmentioning
confidence: 99%
“…Under split tensile stress, the low modulus of elasticity of polypropylene fibers allows them to withstand considerable deformation without fracturing, thereby increasing the concrete's load-bearing capacity. The variation in the effect of fiber dosage on compressive strength, increasing initially and then decreasing, can be attributed to the ability of an appropriate amount of fibers to fill the micropores and microcracks in concrete, acting as bridges [38], thus effectively preventing crack expansion and thereby enhancing compressive strength [39,40]. However, when the fiber admixture surpasses the critical value, the fiber dispersion becomes poor, and hydration products fail to completely encapsulate the fibers, resulting in excessive fiber aggregation and agglomerate formation in the concrete [41].…”
Section: Split Tensile Strengthmentioning
confidence: 99%