Funded by Chinese National Natural Science Foundation of China(No.U2006224)。
The paper presents experimental investigation results of crack pattern change in cement pastes caused by external sulfate attack(ESA).To visualize the formation and development of cracks in cement pastes under ESA,an ...
National Natural Science Foundation of China(Nos.42171130 and 42301158);Pilot Project of China’s Strength in Transportation for the Central Research Institute(No.QG2021-1-4-7);National Key Technology Research and Development Program of the Ministry of Science and Technology of China(No.2021YFB2601200).
Sulfate attack-induced expansion of cement-treated aggregates in seasonally frozen regions is a well-known issue which causes continuous expansion in railway subgrades,and particularly in high-speed railways.According...
supported by the State Major Program of National Natural Science Foundation of China(52090082);the National Key Research and Development Program of China(2022YFB2602200);the National Natural Science Foundation of China(52178423 and 52378398).
The rail transit in sulfate-rich areas faces the combined effects of stray current and salt corrosion;however,the sulfate ion transport and concrete degradation mechanisms under such conditions are still unclear.To ad...
This work investigates durability of cement-free mortars with a binder comprised of ground granulated blast furnace slag (GGBFS) activated by high-calcium fly ash (HCFA) and sodium carbonate (Na2CO3
support from the National Natural Science Foundation of China(Grant Nos.11832013,52168030);the Education Department of Jiangxi Province Science and Technology Project(No.211909);K.C.Wong Magna Fund in Ningbo University,and the project of the Key Laboratory of Impact and Safety Engineering(Ningbo University),Ministry of Education(No.202004).
The deterioration of the microscopic pore structure of concrete under external sulfate attack(ESA)is a primary cause of degradation.Nevertheless,little effort has been invested in exploring the temporal and spatial de...
This work is supported by the National Natural Science Foundation of China(No.51709097).
This study deals with the analysis of the detrimental effects of a“sulfate attack”on cement mortar for different dry-wet cycles.The mass loss,tensile strength,and gas permeability coefficient were determined and ana...
The aim of this work was to propose a possibility of using plastic aggregates from waste to reduce the shrinkage and expansion observed in concrete. The process of obtaining plastic aggregates was presented. Natural a...
supported by“the National Natural Science Foundation of China(Grant No.52008146)”;“the Research Fund of Henan Key Laboratory of Materials on Deep-Earth Engineering(Grant No.MDE2020-01,Henan Polytechnic University)”;“the Fundamental Research Funds for the Central Universities of China(Grant Nos.JZ2021HGTB0089,JZ2020HGQA0205)”;“State Key Laboratory of High Performance Civil Engineering Materials(2021CEM003)”.
In this paper,the effects of different mineral admixtures and sulfate solution types on the appearance,mass change rate,relative dynamic elastic modulus,and corrosion resistance coefficient of concrete were systematic...
supported in part by grants from National Natural Science Foundation of China(52278259).
Limestone Calcined Clay Cement(LC^(3)) is a newly proposed low-carbon cement,which can effectively reduce energy consumption and carbon emissions of the traditional cement industry without changing the basic mechanica...
supports for the study were provided by the Natural Sciences Foundation Committee of China(Grant No.41472254,Jinming Xu,http://www.nsfc.gov.cn)。
To enhance the sulfate attack resistance performance of concrete,Sulfate erosion test was carried out on basalt fiber concrete with different contents,selecting a concentration of 5%sulfate solution and using a dry−we...