Results 151 to 160 of about 469 (178)

Study on the influence of water saturation on radon exhalation rates of rocks

Science of the Total Environment
The radon exhalation characteristics of rocks will change significantly during water saturation treatment, and radon, as an important tracer, is of great significance in predicting rock activities. In this paper, the radon exhalation characteristics of rocks after saturated with different water contents were studied by centrifugal test, radon ...
Pengfei, Li, Qiang, Sun, Lin, Cong
exaly   +3 more sources

Measurement of the radon exhalation rate from the medium surface by tracing the radon concentration

Journal of Radioanalytical and Nuclear Chemistry, 2012
The paper will present a method based on the accumulation chamber technique for measuring of radon exhalation from the medium surface. A radon monitor traces the change of radon concentration in the accumulation chamber, and then the radon exhalation can be obtained accurately through linear fit.
Yanliang Tan, Detao Xiao
openaire   +1 more source

Measuring radon exhalation rate through three cycles

Journal of Instrumentation, 2012
This paper proposes that the radon exhalation rate can be calculated through three measurement cycles performed by a radon monitor based on the electrostatic collection method. The first cycle time is 20 min, the measured value in this cycle falls into disuse. The radon concentrations in the next two long cycles can be accurately measured.
Y Tan, D Xiao
openaire   +1 more source

Influence of Humidity on Building Material's Radon Exhalation Rate

Applied Mechanics and Materials, 2013
In this paper, the humidity of building materials were controlled by adopting the inorganic salts saturated solutions, and the radon exhalation rate of building materials were measured by the active carbon method which under the different humidity conditions.
Dong Ji, Zhong Yang Xu, Yun Tao Zhang
openaire   +1 more source

Measurements of radon exhalation rate for monitoring cement hydration

Materials and Structures, 2006
The paper deals with one of the physical methods, which can be used for monitoring hydration of cementitious materials: the radon exhalation method. Experiments with two types of hydrating cement paste (made with water to cement ratios of 0.25 and 0.33) are described. The kinetics of shrinkage and hydration heat development are discussed.
openaire   +1 more source

Radioactivity and Radon Exhalation Rate of Some Granite Building Materials in Türkiye

Applied Radiation and Isotopes
The presence of elevated concentrations of naturally occurring radionuclides in building materials can lead to the generation of high dose rates within indoor environments, resulting from both internal and external exposure pathways. The internal dose is mainly attributable to radon exhalation from the building materials, whereas the external dose is a
openaire   +2 more sources

Experimental study on the mechanism of radon exhalation during coal spontaneous combustion in goaf

Tunnelling and Underground Space Technology, 2021
Cunbao Deng
exaly  

A study on the differences in radon exhalation of different lithologies at various depths and the factors influencing its distribution in northern Shaanxi, China

Science of the Total Environment, 2022
Shi Qingmin, Jianjun Hu
exaly  

Effect of Carbonation on Radon Exhalation Rate in Concrete

ACI Materials Journal, 2022
openaire   +1 more source

Radon exhalation from temperature treated loess

Science of the Total Environment, 2022
Liyun Tang, Jishi Geng, Qiang Sun
exaly