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Buildings
Special Issues
Blast and Impact Engineering in Concrete Materials and Structures
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Blast and Impact Engineering in Concrete Materials and Structures

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Materials, and Repair & Renovation".

Deadline for manuscript submissions: closed (20 December 2022) | Viewed by 7100

Special Issue Editors

Dr. Xiaoqing Zhou

E-Mail Website
Guest Editor
College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
Interests: blast and impact engineering; protective structures; meso-scale modeling
Dr. Fei Yang

E-Mail Website
Guest Editor
School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
Interests: blast; impact; concrete

Special Issue Information

Dear Colleagues,

During its service life, concrete may be subjected to explosive and/or impact loads. For example, terrorist attacks and accidental explosions may generate huge explosive loads to concrete structures. Additionally, the impact of vehicles on roads and bridge infrastructure, the impact of ships on bridge structures, and the impact between adjacent structures during earthquakes may cause the concrete to be subjected to impact loading.

Protecting infrastructures such as government buildings, civil buildings, underground spaces, and bridges from explosions and impact loadings has become a key scientific issue. A great deal of research activity is devoted to the modeling and analysis of shock and impact effects on structures. In recent years, penetration and perforation analysis, material failure under high strain rate loads, and the development of test methods under shock and impact conditions have also attracted increasing research interest. This Special Issue focuses on different aspects of concrete materials subjected to explosive impact loads, including but not limited to experimental results and numerical simulations on concrete materials and structures subjected to explosive and impact loading. We look forward to receiving your exciting contributions.

Dr. Xiaoqing Zhou
Dr. Fei Yang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Buildings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • blast
  • impact
  • concrete
  • structure
  • numerical simulation
  • high strain rate
  • structural engineering
  • protective structures

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Published Papers (2 papers)

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Research

12 pages, 2529 KiB  
Article
Water-Cased Kicker Charges for Use in Explosive Demolition
by Rachel L. Bauer, Paul Pitzel, Emily M. Johnson and Catherine E. Johnson
Buildings 2023, 13(2), 378; https://doi.org/10.3390/buildings13020378 - 29 Jan 2023
Viewed by 4447
Abstract
Demolition projects involving explosives often incorporate cutting charges to sever columns in conjunction with kicker charges that “move” the columns out of alignment. Traditional kicker charges use dynamite secured to the column above a linear-shaped cutting charge. This study investigates the use of [...] Read more.
Demolition projects involving explosives often incorporate cutting charges to sever columns in conjunction with kicker charges that “move” the columns out of alignment. Traditional kicker charges use dynamite secured to the column above a linear-shaped cutting charge. This study investigates the use of water-cased kicker charges for use in explosive demolition. The goal is to reduce the fragmentation of steel members and the quantity of explosive needed due to the increased density, incompressibility, and impedance mismatch water provides. Simulations and experimental tests were utilized to determine what type of charges provide the optimal column movement and water placement. Water charges and traditional charges were placed on hanging steel columns that swung freely from a top pivot and analyzed for the fragmentation and velocity of the column. Tests were recorded with high-speed video to calculate velocity and impulse. Simulations showed the same results as experimental tests, with water-cased charges moving the column faster and with more impulse than traditional charges. Experimental testing showed that water-cased charges moved the column 53% faster than traditional in contact charges while simulations showed that water-cased charges moved the column 43% faster than traditional in contact charges. Simulations showed the water tamped behind the charge increased beam velocity 32% while water in front of the charge reduced pressure 38% through dispersion. Full article
(This article belongs to the Special Issue Blast and Impact Engineering in Concrete Materials and Structures)
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17 pages, 5937 KiB  
Article
Experimental Study on the Propagation Law of Explosive Stress Wave in Cement Mortar with Weak Layers
by Sanfeng Liu, Hansheng Geng, Xinli Kong, Yinzhi Zhou, Peng Wang and Fengnian Jin
Buildings 2022, 12(5), 687; https://doi.org/10.3390/buildings12050687 - 20 May 2022
Viewed by 1554
Abstract
The weak layer has good attenuation performance when it comes to the explosive stress wave, which can be used in protective structures. In this paper, a cement mortar specimen was designed, cast, and tested. Under inner explosion, due to the expansion of air [...] Read more.
The weak layer has good attenuation performance when it comes to the explosive stress wave, which can be used in protective structures. In this paper, a cement mortar specimen was designed, cast, and tested. Under inner explosion, due to the expansion of air in the explosive hole, the tensile cracks formed around the explosive hole are mainly in a damage pattern. In ordinary cement mortar, the transmittance is decreasing as the distance increases. At a distance of 8 cm to 14 cm from the explosive center, the average transmittance is 50.16%, 12 cm to 18 cm, while the average transmittance is 62.89%, increasing by 12.73%. Adding one weak layer into the cement mortar, the transmittance of one weak layer is 43.37%. The effect of increasing weak layers in short spacing is not obvious, and the transmittance of the second and third weak layer is about 80%, much less than the first layer. The softer the weak layer and the larger the wave impedance, the smaller the transmission coefficient is. The research proves that the weak layer has excellent attenuation performance when it comes to the explosive stress wave. Full article
(This article belongs to the Special Issue Blast and Impact Engineering in Concrete Materials and Structures)
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