Frost resistance of polyvinyl alcohol fiber and polypropylene fiber reinforced cementitious composites under freeze thaw cycling

Nam, Jeongsoo; Kim, Gyu-Yong; Lee, Bokyeong; Hasegawa, Ryô; Hama, Yukio

doi:10.1016/j.compositesb.2015.12.009

Cited by 117 publications

(37 citation statements)

References 19 publications

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“…It has been noted that the inkbottle pore has water retention characteristics, which block this pathway, thereby decreasing the continuity of the pores and blocking the transfer of CO 2 . The MIP method has been widely used until present; however, it is wellknown that mercury pressure porosimetry does not describe the actual pore structure [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. Therefore, the size distribution of inkbottle type pores is analyzed by executing a second mercury cycle.…”

Section: Effects Of the Degree Of Frost Damage And The Pore Structurementioning

confidence: 99%

“…The dynamic modulus of elasticity was measured by maintaining the minimal temperature of -18°C and the maximal temperature of 5°C, which is based on the JIS A 1148 A method [42], which is similar to ASTM C 666 Procedure B (rapid freezing in air and thawing in water) [43,44]. The relative dynamic modulus of elasticity was determined by measuring the resonant frequency and then calculated as the percentage fraction of transverse frequency after n cycles of freeze-thaw squared to the square of the transverse frequency before freeze-thaw cycling.…”

Section: Freeze-thaw Testmentioning

confidence: 99%

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Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Zhang

Kim

et al. 2017

Mater Struct

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The durability performance of cementitious material is traditionally based on assessing the effect of a single degradation process. However, this study investigates the coupled deterioration properties of mortar incorporating industrial solid wasteground granulated blast furnace slag (BFS) and different mineral admixtures, such as calcium sulfate (CS) and limestone powder (LSP). The combined deterioration properties caused by carbonation and frost damage in the mortar sample were experimentally investigated with respect to accelerated carbonation and freeze-thaw tests. Different degrees of deterioration, i.e. after subjected to 12, 30 and 60 freeze-thaw cycles, were induced in the freeze-thaw tests. The experimental investigation of single degradation revealed that the compressive strength, frost resistance and carbonation resistance decrease as the BFS replacement ratio increases by weight from 0 to 45%. The less amount of CH in the BFS cement leads to the carbonation progress more easily. Moreover, to achieve the same strength as ordinary Portland cement, 2 wt% CS and 4 wt% LSP in the BFS mortar are required. However, the data shows that incorporating LSP into the BFS mortar produces a lower frost resistance. The combined damage tests revealed that different deterioration degrees resulting from 12, 30 and 60 freeze-thaw cycles slightly decreased the carbonation resistance, which is related to the decrease in the inkbottle pore volume due to its water retention characteristics. Simultaneously, the pre-carbonation deterioration could effectively decrease the surface mass scaling of the freeze-thaw and the pore structure undergoes densification due to pre-carbonation.

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Section: Effects Of the Degree Of Frost Damage And The Pore Structurementioning

confidence: 99%

Section: Freeze-thaw Testmentioning

confidence: 99%

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Zhang

Kim

et al. 2017

Mater Struct

Self Cite

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“…So far, most literatures related to HDCC durability focus on a single factor. The mechanical property of HDCC exposed to freeze-thaw environment was more excellent than that of normal concrete, and this can be attributed to crack resistance of fibers (Şahmaran et al 2012;Nam et al 2016). After freeze-thaw cycles of 0 ~ 300, the ultimate flexural strength for HDCC specimen with thickness of 15mm showed decrease trend, and ultimate deflection increased after 0 ~ 150 cycles while decreased after 200 ~ 300 cycles (Chai and Fei 2018).…”

Section: Introductionmentioning

confidence: 99%

Flexural Behaviors of Ecological High Ductility Cementitious Composites Subjected to Interaction of Freeze-Thaw Cycles and Carbonation

Chai

Guo

Chen

et al. 2019

ACT

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To explore flexural behaviors of ecological high ductility cementitious composites (Eco-HDCC) for bridge deck link slab under severe service conditions, interaction experimental schemes of freeze-thaw cycles and carbonation were designed. Factors such as interaction cycle and preloading stress level were considered. Carbonation front and pore structure of Eco-HDCC were analyzed. The results show that ultimate flexural strength and ultimate deflection of Eco-HDCC decrease when interaction cycle or preloading stress level increases. Besides, all flexural load-deflection curves exhibit four stages: linear elastic, non-linear, deflection hardening and deflection softening stage. In addition, carbonation front of Eco-HDCC increases when interaction cycle or preloading stress level increases. With the same depth range in Eco-HDCC, pore structure deteriorates as interaction cycle increases, and deterioration degree of pores decreases as depth increases. For general consideration, after interaction cycles of 15, flexural property of Eco-HDCC with preloading stress level of 0.5 can be adopted for bridge deck link slab design with the aim to safety.

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“…To obtain the accurate predictions of the effective mechanical properties of C/C composites with the reasonable computational efficiency, the microstructures of C/C composites should be characterized appropriately. Up to now, extensive techniques have been successfully used to obtain the microstructure of composites, such as scanning electron microscope (SEM) [21], micro CT [11] and Mercury Intrusion Porosimetry (MIP) [22,23]. Compared with the complex data obtained from micro CT test [24] and only 2D information got from SEM, MIP technique can provide both the distribution of the pore radius and the pore volume [25].…”

Section: Introductionmentioning

confidence: 99%

Numerical evaluation of the influence of porosity on bending properties of 2D carbon/carbon composites

Chao

Tian

et al. 2018

Composites Part B: Engineering

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Numerical simulation with progressive damage criterion is implemented to investigate the effect of porosity on the bending properties of 2D cross-ply carbon/carbon (C/C) composites. The mechanical properties of Pyrocarbon matrix regarding the change of porosity are calculated by using Mori-Tanaka approach. Combining with the stiffness degradation scheme, the ultimate bending strengths are calculated in Abaqus though a user-defined subroutine (USDFLD). Delamination is modelled by inserting cohesive elements between two adjacent plies. A good agreement is obtained when the FEM results are compared to three-point bending experiments. The FEM results show that the bending strength decreases greatly with the increase of porosity. When the porosity reaches up to 18%, the bending strength is decreased by 57%. The major fracture behaviors are interlamination delamination and continuous crack damage in 90˚ plies. With the increase of porosity, more severe interlamination delamination will be slightly aggravated. In addition, the increase of porosity will also accelerate the damage in 90˚ plies.

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Frost resistance of polyvinyl alcohol fiber and polypropylene fiber reinforced cementitious composites under freeze thaw cycling

Cited by 117 publications

References 19 publications

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Flexural Behaviors of Ecological High Ductility Cementitious Composites Subjected to Interaction of Freeze-Thaw Cycles and Carbonation

Numerical evaluation of the influence of porosity on bending properties of 2D carbon/carbon composites

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