Results 111 to 120 of about 195 (142)

Rheological Properties of Wet-Mix Shotcrete Mixtures Made with Crushed Aggregate

Journal of Materials in Civil Engineering, 2017
AbstractThe recent depletion of high-quality and well-graded natural-aggregate sources is one of the factors compromising the production of good-quality shotcrete.
Pangil Choi, Jung Heum Yeon, Kyong Ku Yun   +2 more
exaly   +2 more sources

Steel‐Fiber‐Reinforced Wet‐Mix Shotcrete: Comparisons with Cast Concrete

Journal of Materials in Civil Engineering, 1994
As part of a larger investigation in steel‐fiber‐reinforced wet‐mix shotcrete, companion specimens were cast using the shotcrete mixes for a direct comparison with shotcrete after hardening. Deformed steel fibers with five different geometries were investigated. Mixes were first shot on wooden forms and then cast using external vibration.
Nemkumar Banthia
exaly   +2 more sources

Effects of admixtures on the rheological properties of high-performance wet-mix shotcrete mixtures

Construction and Building Materials, 2015
Abstract This study investigates the effects of various admixtures on the rheological properties of high-performance wet-mix shotcrete (HPWMS) in an attempt to resolve practical issues faced in conventional wet-mix shotcrete processing. The admixtures used in this study were silica fume, air-entraining agent (AEA), superplasticizer, synthetic fiber ...
Jung Heum Yeon, Kyong Ku Yun
exaly   +2 more sources

Mass distribution characteristics of wet-mix shotcrete during spraying process and adhesion process

Construction and Building Materials
Feng Wei Ning, Wei Sui, Yin Bai, Bo Chen
exaly   +2 more sources

Fiber Reinforced Wet-Mix Shotcrete under Impact

Journal of Materials in Civil Engineering, 2000
As a result of excavation blasting, traffic, sudden ground movements, rock bursts, and seismic activity, shotcrete is often subjected to impact and other dynamic loads. Limited data exist, however, with regard to the resistance of shotcrete to such dynamic loads.
P. Gupta, N. Banthia, C. Yan
openaire   +1 more source

Workability, strength and toughness properties of different types of fiber-reinforced wet-mix shotcrete

Structures, 2021
Abstract The main focus of this study is to investigate the effects of macro steel (ST), forta-ferro (FF) and polyamide (PA) synthetic fibers on the slump, compressive, splitting tensile, flexural strength, flexural toughness and rebound rate of wet-mix shotcrete.
Akbulut, Zehra Funda, Oker, Behice, Guler, Soner   +2 more
openaire   +2 more sources

Retrofitting of Vulnerable Reinforced Concrete Frames with Wet-Mixed Shotcrete Panels

Advances in Structural Engineering, 2012
In this paper, wet-mixed shotcrete panels are proposed instead of reinforced concrete (RC) shear walls for the retrofitting of vulnerable RC frames. The general behavior of the retrofitted frames responding in-plane lateral loading is investigated in detail. The experimental work is composed of retrofitting of undamaged and damaged RC frames.
P. Teymur, S. Pala, E. Yuksel
openaire   +1 more source

Impact behaviour of fiber reinforced wet-mix shotcrete

2009
The use of shotcrete for ground support in mines and tunnels has increased dramatically within the past ten years. It has long been used in the construction of dams, canals, and reservoirs, in the repair and rehabilitation of marine, highway and railway structures, and in rock stabilization work.
openaire   +1 more source

Evolutionary mechanism and particle characterization analysis of dust produced by wet-mix shotcrete in tunnels

Construction and Building Materials
Guoliang Zhang, Zhongan Jiang, Jianwu Chen, Bin Yang, Yanqiu Sun, Mingli Si, Ya Chen, Fabin Zeng, Hui Wang, Jihe Chen, Xiangdong Yang, Zhaoying Zhang, Meitong Chen, Hao Qin   +13 more
exaly   +2 more sources

Durability Assessment for Crushed Sand Wet-mix Shotcrete Mixed with Mineral Admixtures

Journal of the Korea Concrete Institute, 2014
The purpose of this dissertation was to investigate the effect of mineral admixtures, such as fly ash, blast furnace slag powder, meta kaolin and silica fume, on the basic properties and durability of crushed sand shotcrete, selecting a series of shotcrete mixtures with a variable admixture.
Kyeo-Re Lee, Seung-Yeon Han, Kyeong Nam Gung, Kyong-Ku Yun   +3 more
openaire   +1 more source