menu_book Explore the article's raw data

Relationships between 137Cs and soil carbon in artificial forests: results from the mountain areas of North China

Abstract

In order to investigate the relationship between Cs-137 and soil total carbon (TC) in artificial forests, a study was conducted on Platycladus orientalis forest (PO), Quercus variabilis forest (QV), and abandoned land slope. Results demonstrated that both PO and QV have higher levels of Cs-137 and lower TC stocks compared to the abandoned land slope. There is a significant correlation between Cs-137 and TC in artificial forests, suggesting that Cs-137 can be used as a reliable tracer for TC migration in afforestation areas. However, it is not recommended to use Cs-137 for estimating TC in abandoned land slopes.

article Article

date_range 2024

language English

link Link of the paper

format_quote

Li Jianfei

Su Zhiran

Zhang Zhi-Hua

Zhang Jinsong

Sang Yuqiang

Zhao Zhenli

Fan Guoqiang

Sorry! There is no raw data available for this article.

Loading references...

Loading citations...

Featured Keywords

Caesium-137 (Cs-137)

Soil total carbon

Artificial forests

Mountain areas of North China

shopping_basket PURCHASE DATA

Effect of corrosion on flexural strength of reinforced concrete beams with polypropylene fibers

Abstract

An experimental study was performed to investigate the effects of polypropylene fibers on uncorroded and corroded reinforced concrete beams. Three different volume fractions of polypropylene fibers having 0, 0.5, and 1.5%, were tested at four corrosion levels of 0% and approximately 5, 7, and 9%. A full scale of an accelerated corrosion pool was used for the accelerated corrosion process. Reinforced concrete beams were used for an under monotonic bending test. The contribution of the actual corrosion levels of transverse and longitudinal reinforcement bars to the total corrosion levels were obtained from reinforcement bars fully extracted from concrete. Flexural strength, bond-slip, and moment-curvature relationships were examined for uncorroded and corroded reinforced concrete beams. A new model was developed to predict the flexural strength of corroded reinforced concrete beams. The proposed model for predicting the residual flexural strength of corroded beams was compared with test data published in previous studies. Furthermore, a novel model is presented for improved predictions between the actual and theoretically estimated corrosion mass losses, based on Faraday’s law, with the aid of fully extracted reinforcement bars. The model used to predict the flexural strength of corroded reinforced concrete beams with large sizes demonstrated good agreement with current and previously published literature data. In the case of corroded beams comprising differing amounts of polypropylene fibers, the performance of the corroded beams was limited by a fiber volume fraction of 1.5% at low corrosion levels.

article Article

date_range 2018

language English

link Link of the paper

Load-displacement...

A0 (xlsx)