Impact resistance of multi-layer slabs made with (HPSCC) reinforced by fiber under the projectile impact at high speed

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

Sahraei moghadam a.; OMIDINASAB F.; DALVAND A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Modares Civil Engineering journal Year:2018 | Volume:18 | Issue:5 Page(s): 105-118

Download Full-Text

Persian Verion

View:

513

Download:

Cites:

Information Journal Paper

Title

Impact resistance of multi-layer slabs made with (HPSCC) reinforced by fiber under the projectile impact at high speed

Author(s)

Sahraei moghadam a. | OMIDINASAB F. | DALVAND A. | Issue Writer Certificate

Keywords

impact resistanceQ1

multilayer slabsQ1

steel fiberQ1

nylon fiberQ1

projectile impactQ1

Abstract

In this study, the impact strength multi-layer slabs reinforced by steel and nylon fibers, as well as the combination of these two fibers under the influence high velocity projectile, was investigated. To achieve this goal, 30 slabs one layer and three layers with dimensions 40  40  7. 5 cm were reinforced by 1% of the fiber, 30 slabs made 10 different models, each with 3 models sample was made. A non-fiber model, as a control sample, and other slab specimens all have a constant volume 1 percent fiber, the difference being in the type and composition the fibers in different layers the slabs. The slabs were made with Kalashnikov, PK Kalashnikov and Dragunov guns at a distance 50 meters tested. In the test the projectile's encounter, three parameters penetration depth, area the damaged front and rear area and the volume damaged area in the samples were calculated and compared. Based on the results obtained, steel fibers can increase the resistance concrete slabs against the impact the projectile and reduce the surface area and volume the damaged area and significantly reduce the penetration depth. steel fibers at best reduced the penetration depth 64 % in the Kalashinkov gun and reduced the area and volume the damaged area in the Dragunov weapon by 88 % and 98 % respectively. Also, steel fibers can prevent crack expansion by increasing the bond strength, provided that the fibers the nylon have a much lower impact than steel fibers. the nylon fiber could reduce the penetration depth and demolition area the sample in Kalashnikov weapon by 37 % and 59 %, respectively, and reduce the volume damaged area in the Dragunov weapon by 84 %, respectively. In addition, in this research, 12 samples cubic pressure were placed on the side 10 cm, 12 cylindrical tensile samples 10 × 20 cm and 12 small bending beams with dimensions 32  8  6 cm and tested. It was observed that steel and nylon fibers cannot have a significant effect on the compressive strength, As a result the addition one percent the steel fiber, nylon and a combination these, this increase is 7. 7, 2. 6 and 6. 4 %, which can be neglected. but steel fibers can significantly increase the tensile and flexural strength the concrete. addition one percent the steel fiber could create a 2. 5 – times increase in tensile strengths and increase the resistance 2-times in bending specimens. This is the nylon fibers do not have a significant impact on the tensile and flexural strength. Adding one percent the nylon fibers in the tensile and flexural samples could increase the resistance these specimens by 16 % and 24 % respectively. It was observed in the bending test of beams that steel and nylon fibers can be bent by bending in the cracks to increase the shape the weld so that the change in the maximum area the beam with the addition one percent steel fiber from about 4 mm in the control sample increase to about 25 mm.

Cites

No record.

References

No record.

Cite

APA: Copy

Sahraei moghadam, a., OMIDINASAB, F., & DALVAND, A.. (2018). Impact resistance of multi-layer slabs made with (HPSCC) reinforced by fiber under the projectile impact at high speed. MODARES CIVIL ENGINEERING JOURNAL, 18(5 ), 105-118. SID. https://sid.ir/paper/256892/en

Vancouver: Copy

Sahraei moghadam a., OMIDINASAB F., DALVAND A.. Impact resistance of multi-layer slabs made with (HPSCC) reinforced by fiber under the projectile impact at high speed. MODARES CIVIL ENGINEERING JOURNAL[Internet]. 2018;18(5 ):105-118. Available from: https://sid.ir/paper/256892/en

IEEE: Copy

a. Sahraei moghadam, F. OMIDINASAB, and A. DALVAND, “Impact resistance of multi-layer slabs made with (HPSCC) reinforced by fiber under the projectile impact at high speed,” MODARES CIVIL ENGINEERING JOURNAL, vol. 18, no. 5 , pp. 105–118, 2018, [Online]. Available: https://sid.ir/paper/256892/en

Related Journal Papers