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Fatigue Performance of the CA Mortar Used in CRTS I

Nov 13, 2018  The cement and asphalt mortar (CA mortar) used in the China Railway Track System (CRTS) I ballastless slab track may encounter a coupling fatigue effect under the high-frequency vibration, load and high-and-low temperature cycles, and the deterioration under fatigue may happen during service of the high-speed railway.

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Fatigue Performance of the CA Mortar Used in CRTS I

Nov 13, 2018  The cement and asphalt mortar (CA mortar) used in the China Railway Track System (CRTS) I ballastless slab track may encounter a coupling fatigue effect under the high-frequency vibration, load and...

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Fatigue Performance of the CA Mortar Used in CRTS I

materials Article Fatigue Performance of the CA Mortar Used in CRTS I Ballastless Slab Track under Simulated Servicing Condition Yuchuan Shan 1,

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Fatigue Performance of the CA Mortar Used in CRTS I Ballastless

The cement and asphalt mortar (CA mortar) used in the China Railway Track System (CRTS) I ballastless slab track may encounter a coupling fatigue effect... DOAJ is a community-curated online directory that indexes and provides access to

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Fatigue Performance of the CA Mortar Used in CRTS I Ballastless

Oct 31, 2018  The cement and asphalt mortar (CA mortar) used in the China Railway Track System (CRTS) I ballastless slab track may encounter a coupling fatigue effect under the high-frequency vibration, load and high-and-low temperature cycles, and the deterioration under fatigue may happen during service of the high-speed railway.

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Fatigue Performance of the CA Mortar Used in CRTS I

Fatigue Performance of the CA Mortar Used in CRTS I Ballastless Slab Track under Simulated Servicing Condition Shan, Yuchuan; Zheng, Shuguang; Zhang,

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Fatigue Behavior of CA Mortar in CRTS-I Ballastless Track under

Results show that the overall average CA mortar life is 10 to the 11th power. As the train load increases the CA mortar fatigue life decreases, the biggest drop is 4.1 percent. The danger areas of CA mortar fatigue life are on the slab ends.

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A study of the dynamic mechanical properties of CRTS I

Jun 01, 2016  The compressive strength (fd) of CA mortar increased with the strain rate. As the strain rate increased from 3.3 × 10 −6 s −1 to 1.7 × 10 −2 s −1, its compressive strength increased from 1.3 MPa to 5.0 MPa. Both mortars were “impact toughness” for the compressive strength strain ( εd) of those increased with the strain rate [17].

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Fatigue Performance of the CA Mortar Used in CRTS I

The cement and asphalt mortar (CA mortar) used in the China Railway Track System (CRTS) I ballastless slab track may encounter a coupling fatigue effect under the high-frequency vibration, load and high-and-low temperature cycles, and the deterioration under fatigue may happen during service of the high-speed railway. In this study, the performance degradation and its

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Sci-Hub Fatigue Performance of the CA Mortar Used in CRTS I ...

Shan, Y., Zheng, S., Zhang, X., Luo, W., Mao, J., Kong, D. (2018). Fatigue Performance of the CA Mortar Used in CRTS I Ballastless Slab Track under Simulated ...

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Fatigue Performance of the CA Mortar Used in CRTS I

Article “Fatigue Performance of the CA Mortar Used in CRTS I Ballastless Slab Track under Simulated Servicing Condition” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we

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Fatigue Performance of the CA Mortar Used in CRTS I

Oct 31, 2018  Abstract. The cement and asphalt mortar (CA mortar) used in the China Railway Track System (CRTS) I ballastless slab track may encounter a coupling fatigue effect under the high-frequency vibration, load and high-and-low temperature cycles, and the deterioration under fatigue may happen during service of the high-speed railway.

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Fatigue Performance of the CA Mortar Used in CRTS I

Fatigue Performance of the CA Mortar Used in CRTS I Ballastless Slab Track under Simulated Servicing Condition Shan, Yuchuan; Zheng,

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Fatigue Behavior of CA Mortar in CRTS-I Ballastless Track under Train ...

By means of the finite element (FE) method, the beam-shell model on elastic foundation of CRTS-I ballastless track was established. On the basis of Palmgren-Miner linear cumulative fatigue damage criterion, life cycle analysis method was used to analyze the CA mortar fatigue life under different train loads. Results show that the overall average CA mortar life is 10 to the

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Analysis on Fatigue Life of CA Mortar Used in CRTS-I Slab

According to the structural and mechanical characteristics of CRTS-I slab ballastless track,the rail was assumed to be a beam discretely supported at points,the fastener and foundation's elasticity was assumed as springs,the track slab,CA mortar and base slab were respectively assumed as solid object. Then the finite element model of CRTS-I track slab was established.

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Research on the fatigue performance of self-compacting concrete ...

Oct 11, 2021  The CA mortar used as the under-slab filling layer material is eliminated, ... Fatigue Performance of CRTS III Slab Ballastless Track Structure un-der High-speed Train Load Based on Concrete Fatigue Damage Constitu-tive Law. J. Adv. Concr. Technol., 16 (2018), pp. 233-249, 10.3151/jact.16.233.

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Effect of Cement Asphalt Mortar Debonding on Dynamic Properties of CRTS ...

Feb 23, 2014  The debonding of cement emulsified asphalt mortar (CA mortar) is one of the main damage types in China railway track system II slab ballastless track. In order to analyze the influence of mortar debonding on the dynamic properties of CRTS II slab ballastless track, a vertical coupling vibration model for a vehicle-track-subgrade system was established on the

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Analysis of the initiation and propagation of fatigue cracks in the ...

Dec 03, 2018  Qi, S-X, Ren, J-J, Liu, X-Y. Influence of debonding on the performance of CRTS II slab track turnouts on large bridges. Eng Mech 2015; ... Sun, H-Y, Li, Y, Wang, P Research temperature fatigue of CA mortar used for CRTS II slab

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CN102162781A - Anti-fatigue test device of CA (cement-asphalt) mortar

The invention relates to an anti-fatigue test device of CA (cement-asphalt) mortar for a plate-type ballastless track of a high transit railway. The test device comprises a chassis which is provided with a counter-force device, a vibrating table and a high-low temperature test box; the counter-force device comprises a guide rod, a counter-force beam and a loading beam; the counter

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Fatigue Behavior of CA Mortar in CRTS-I Ballastless

By means of the finite element (FE) method, the beam-shell model on elastic foundation of CRTS-I ballastless track was established. On the basis of Palmgren-Miner linear cumulative fatigue damage criterion, life cycle analysis

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Analysis on Fatigue Life of CA Mortar Used in CRTS-I Slab

According to the structural and mechanical characteristics of CRTS-I slab ballastless track,the rail was assumed to be a beam discretely supported at points,the fastener and foundation's elasticity was assumed as springs,the track slab,CA mortar and base slab were respectively assumed as solid object. Then the finite element model of CRTS-I track slab was established.

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Research temperature fatigue of CA mortar used for CRTS Ⅱslab

There are common debonding phenomenon between the track slab surface and CA mortar in CRTSⅡ slab-type ballastless track f illing layer. In order to explore the discipline of debonding between the slab and CA mortar under the effect of temperature fatigue,the fatigue test was carried out on the test pieces by using- 20 ℃ to 60 ℃ temperature cycle,microstructure

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CA Mortar Scientific.Net

Research on Performance of CRTS I Cement-Emulsified Asphalt Mortar on Site. Authors: Heng Qiong Jia, Tao Wang, Zhao Wei ... On the basis of Palmgren-Miner linear cumulative fatigue damage criterion, life cycle analysis method was used to analyze the CA mortar fatigue life under different train loads. Results show that the overall average CA ...

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CN112214919A - Method for calculating high-cycle fatigue

The invention discloses a method for calculating the high-cycle fatigue damage behavior of CA mortar of a plate-type ballastless track, which introduces a fatigue equation of the CA mortar obtained by a test into the damage constitutive relation of the CA mortar and embeds the fatigue equation into a refined simulation calculation model of a CRTS I plate-type ballastless track,

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Performance of Cement Asphalt Mortar in Ballastless Slab Track

May 05, 2019  The cement asphalt (CA) mortar layer acts as the key component of the China Railway Track System II (CRTS-II) type ballastless slab track to ensure stability, durability, and cost maintenance. ... to study the performance of CA mortar under extreme temperatures, flexural strength and fatigue tests were conducted to evaluate its mechanical ...

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Effect of Cement Asphalt Mortar Debonding on

Feb 23, 2014  The debonding of cement emulsified asphalt mortar (CA mortar) is one of the main damage types in China railway track system II slab ballastless track. In order to analyze the influence of mortar debonding on the dynamic

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A study of the dynamic mechanical properties of CRTS I type CA mortar

DOI: 10.1016/J.CONBUILDMAT.2015.08.024 Corpus ID: 138722627; A study of the dynamic mechanical properties of CRTS I type CA mortar @article{Zeng2016ASO, title={A study of the dynamic mechanical properties of CRTS I type CA mortar}, author={Xiaohui Zeng and Yipeng Xie and Dehua Deng and Ping Wang and Fulin Qu}, journal={Construction and Building Materials},

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CN102162781A - Anti-fatigue test device of CA (cement-asphalt) mortar

The invention relates to an anti-fatigue test device of CA (cement-asphalt) mortar for a plate-type ballastless track of a high transit railway. The test device comprises a chassis which is provided with a counter-force device, a vibrating table and a high-low temperature test box; the counter-force device comprises a guide rod, a counter-force beam and a loading beam; the counter

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Short-Term Creep Experiment of Cement Asphalt Mortar and Its ... - Hindawi

Mar 31, 2016  In order to investigate the creep performance of cement asphalt mortar (CA mortar), the field sampling of CA mortar cylinder samples was produced, and all samples were tested on WDW series electric universal testing machine by using uniaxial static creep test at 25#xb0;C, and the load stress levels were 0.05#x2009;MPa, 0.1#x2009;MPa,

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Performance and Microanalysis of Cement Asphalt Mortar

time when the mortar in funnel flows away completely. 2.2.3 Test Method of Separation Rate of Cement Asphalt Mortar Pour CA mortar into testing mold (Ф50mm×50mm) and scrape and cover the surface of testing mold with film, then move the mold into standard curing room. After de-moulding in 24 hours, keep the mold in the room for 7 days.

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Effect of functional chemical admixtures on the performance of

Oct 15, 2015  Wang F Z, Liu Z C. Research on the Fatigue Behavior of CA Mortar Used in Ballastless Slab Track of High Speed Railway [J]. Journal of Wuhan University of Technology, 2008, 30(11): 79–81. Google Scholar Wang Y L, Zuo J Q, Zhou S, et al. Research on the Influencing Factor of Fluidity on CRTS II Cement Asphalt Mortar [J].

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Research Article Effect of Cement Asphalt Mortar Debonding

mortar disease on dynamic performance of CRTS II slab ballastlesstrack. 2. Mechanism of Mortar Deterioration CRTS II slab ballastless track is a kind of layered structure. Ittransmitsthelongitudinal,transverse,andverticalforceby bond action between CA mortar layer and slab or concrete supporting layer. Bond failure between CA mortar layer and

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Viscoelastic deformation behavior of cement and ... - SpringerLink

Apr 17, 2020  Under repeated train-induced loads, cement and emulsified asphalt mortar (CA mortar) as a viscoelastic material has a time-dependent deformation, part of which is irreversible. This could lead to debonding between the mortar layer and the track slab. Based on the theory of viscoelasticity and the analytical method of the time hardening law (THL), the viscoelastic

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