Results 81 to 90 of about 2,566,804 (193)

Assessing the long-term chloride resistance of alkali-activated fly ash/slag concrete by natural chloride diffusion test and rapid chloride migration test

This paper evaluates the long-term chloride resistance of various alkali-activated fly ash/slag (AAFS) concrete, as determined by the natural chloride diffusion (NCD) test and rapid chloride migration (RCM) test, respectively. These concrete mixtures are
Zhang, Zuhua, Zhang, Jingxiao, Yang, Xiaocong, Ma, Yuwei, Yang, Zhihui, Wang, Hao   +5 more
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Influence of Flexural Loading on Permeablility of Chloride Ion and Diffusion Coefficients in RC Beams

, 2010
The permeability of chloride ion in concrete can be studied using the accelerated aging method in a short period, but the influence of loading characteristic on chloride ion permeability and diffusion coefficients is not considered generally.
Jun Zhi Zhang, Jian Dong Wang, Lie Lu, Liang Ying Wang   +3 more
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Sustaining olfaction at low salinities: mapping ion flux associated with the olfactory sensilla of the blue crab Callinectes sapidus

, 2000
To test the hypothesis of a diffusion-generated, ionic/osmotic microenvironment within the olfactory sensilla (aesthetases), flux gradients of Ca2+ and K+ associated with the external surfaces of these sensilla were spatially mapped using self ...
Gleeson, R.A., Smith, P.J., Hammar, K.
core   +1 more source

Comparison of Diffusion and Chloride Ion Penetration of High-Performance Concrete

, 2010
This paper reports the results of an investigation of chloride ion penetration and diffusion for high performance concrete. Concrete was prepared incorporating pulverised fuel ash (PFA) and silica fume (SF) with various water-binder ratios.
Mohammad Iqbal Khan
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On the diffusion of an ion sheet in Poiseuille flow

, 1968
A nonuniform sheet of ions generated at time t=0 diffuses in a cylindrical ion diffusion tube containing a nonreacting neutral species flowing with parabolic velocity distribution.
Jarvis, Stephen, Jr.
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Degradation Behavior of Concrete with Multiple Industrial Wastes in a Chloride and Sulfate Environment

Buildings
An experimental investigation was conducted to examine the resistance to sulfate attack and chloride ion diffusion of concrete incorporating multiple industrial wastes (MIWC), including limestone powder (LP), tailings sand, and silica fume (SF).
Bin Lyu, Shuchun Zhou, Yuanzhou Wu, Zhikang Wu   +3 more
doaj   +1 more source

Experimental investigation on diffusive behavior and microstructural modifications induced by free iodide and chloride ions in concrete incorporating with fly ash

Ain Shams Engineering Journal
This study investigates the use of iodide as a substitute for chloride in rapid migration tests for assessing chloride migration in marine reinforced concrete (RC) contaminated by seawater. It explores the effect of fly ash (FA) content (0 %, 15 %, 30 %,
Hesong Jin, Jun Liu, Renbin Xie
doaj   +1 more source

Chloride fluxes in lily pollen tubes: a critical reevaluation

, 2004
Microelectrodes, made from a Cl?-selective liquid ion exchanger previously used to measure putative Cl- fluxes in Lilium longiflorum pollen tubes, were characterized. The electrodes were poorly selective, possessing only about 10-fold selectivity for Cl?
Mark A. Messerli, Robert C. Lewis, Kenneth R. Robinson, Robinson, Kenneth R., Lewis, Robert C., Messerli, Mark A., Smith, Peter J.S., Peter J. S. Smith   +7 more
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Probabilistic Analysis of Chloride Ingress Repair Costs Considering External Forces and Vulnerable Sections of RC Girders

International Journal of Concrete Structures and Materials
This study analyzed the chloride ingress repair costs for RC girders by considering cold joints and external force conditions. The diffusion behavior of chloride ions, which varies with the stress conditions, was quantified.
Seung-Jun Kwon, Kwang-Mo Lim, Kyong-Chul Kim, Kyung-Taek Koh, Yong-Sik Yoon   +4 more
doaj   +1 more source

Comparison of diffusion and chloride ion penetration of high-performance concrete

, 2011
This paper reports the results of an investigation of chloride ion penetration and diffusion for high performance concrete. Concrete was prepared incorporating pulverised fuel ash (PFA) and silica fume (SF) with various water-binder ratios.
Khan, M.I.
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