Experimental Study on Mechanics Performance of Polyvinyl Alcohol Fiber Reinforced Cement-Based Composites

2014 ◽  
Vol 584-586 ◽  
pp. 1477-1481 ◽  
Author(s):  
Zhong Yang ◽  
De Bao Jiang ◽  
Xiao Jing Gu
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Polyvinyl Alcohol ◽  
Mechanical Performance ◽  
Fiber Reinforced ◽  
Failure Patterns ◽  
Polyvinyl Alcohol Fiber ◽  
Mechanics Performance ◽  
Reinforced Cement ◽  
Strain Relationship

Polyvinyl alcohol fiber reinforced cement-based composites are a new kind of material based on micro mechanics design. It is produced by adding polyvinyl alcohol fiber in the cement-based composites. In efforts to study the mechanical properties of polyvinyl alcohol fiber reinforced cement-based composites, some specimens were tested to examine performances. According to experimental investigation on mechanical properties, the stress-strain relationship curves and failure patterns are obtained. The test indicates that polyvinyl alcohol fiber reinforced cement-based composites have better toughness and fracture energy, and it has superior physical mechanical performance.

scholarly journals Crack Resistance and Mechanical Properties of Polyvinyl Alcohol Fiber-Reinforced Cement-Stabilized Macadam Base

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Yi Zhao ◽  
Xuan Yang ◽  
Qingyu Zhang ◽  
Naixing Liang ◽  
Yangkai Xiang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyvinyl Alcohol ◽  
Crack Resistance ◽  
Fiber Length ◽  
Cement Content ◽  
Strength Test ◽  
Fiber Reinforced ◽  
Polyvinyl Alcohol Fiber ◽  
Reinforced Cement ◽  
Shrinkage Property

A series of tests were carried out to evaluate crack resistance and mechanical properties of polyvinyl alcohol fiber-reinforced cement-stabilized macadam, which is widely used as pavement base or subbase composite material. Three series of cement-stabilized macadam mixtures with cement content of 3.2%, 3.6%, and 4.0% were prepared by incorporating four various contents (0, 0.6, 0.9, and 1.2 kg/m3) and lengths (12, 18, 24, and 30 mm) of polyvinyl alcohol fiber. The optimum polyvinyl alcohol fiber content, fiber length, and cement content were determined based on the mechanical properties of cement-stabilized macadam mixtures. Then, unconfined compressive strength test, compressive resilience modulus test, splitting strength test, flexural tensile strength test, drying shrinkage test, and temperature shrinkage test were carried out in this study. The results show that polyvinyl alcohol fiber-reinforced cement-stabilized prepared by optimum proportions (cement 3.6%, fiber content 0.9 kg/m3, and fiber length 24 mm) has good crack resistance. The incorporation of polyvinyl alcohol fiber can effectively improve compressive strength and splitting strength, while its effect on CRM of cement-stabilized macadam is not remarkable. The anti-dry-shrinkage property and anti-temperature-shrinkage property of the specimens are also drastically improved due to the reinforcement effect of polyvinyl alcohol fiber. Moreover, the crack resistance index is proposed to evaluate the crack resistance of materials. The crack resistance of PVA fiber-reinforced cement-stabilized macadam prepared by optimum proportions is improved by 44.4%. Consequently, the mechanical properties and crack resistance of cement-stabilized macadam are obviously improved by adding polyvinyl alcohol fiber.

Review of Mechanical Properties and Durability of PVA Fiber Reinforced Cement Based Composite Materials

2013 ◽  
Vol 804 ◽  
pp. 8-11 ◽  
Author(s):  
Xiao Bing Dai ◽  
Peng Zhang ◽  
Ji Xiang Gao
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
High Performance ◽  
Mechanical Performance ◽  
Construction Materials ◽  
Fiber Reinforced ◽  
Practical Engineering ◽  
Reinforced Cement ◽  
Pva Fiber ◽  
Structure Engineering

As a kind of high performance cement based construction materials, because of good mechanical performance and durability, PVA fiber reinforced cement based materials have been paid more and more attention in the field of civil structure engineering. To grasp the characteristics of PVA fiber reinforced cement based composite materials and promote a better application of PVA fiber reinforced cement based composite in practical engineering, a series of research works on the mechanical properties and durability of PVA fiber reinforced cement based composite were introduced systematically.

scholarly journals Freeze–Thaw Damage Model of Polypropylene Fiber Reinforced Cement Stabilized Waste Construction Slurry under Uniaxial Action

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 743
Author(s):  
Ping Jiang ◽  
Lin Zhou ◽  
Yue Wang ◽  
Biao Qian ◽  
Wei Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Damage Model ◽  
Polypropylene Fiber ◽  
Fiber Reinforced ◽  
Two Stage ◽  
Cement Sample ◽  
Freeze And Thaw ◽  
Reinforced Cement ◽  
Strain Relationship ◽  
Relationship Of

In order to apply the fiber reinforced cement stabilized waste construction slurry more widely, it is crucial to evaluate its mechanical behavior under freeze and thaw (F–T) cycles. The mechanical properties of fiber cement-modified waste construction slurry (FCMS) under five different F–T cycles were studied using unconfined compressive strength tests. One fixed cement sample with five different types of polypropylene fiber was used in the FCMS. Using the meso random damage model, the two-stage damage stress–strain relationship of FCMS was established using particle swarm optimization (PSO). The results were as follows: (1) The mechanical properties of FCMS at room temperature and in an F–T environment were significantly improved by fiber; (2) The elastic modulus of FCMS decreased in the form of a power function with the increase of F–T cycles; (3) The fitting results of the two-stage F–T damage model based on meso random damage theory were in agreement with the measured data.

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