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Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregateconcrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 754-772 doi: 10.1007/s11709-021-0711-2

Abstract: Typical effects of coarse and fine aggregates on the long-term properties of sea sand recycled aggregateTwo different types of fine (coarse) aggregates are considered: sea sand and river sand (natural andrecycled coarse aggregates).aggregate replacement percentage and increasing sea sand chloride ion content.and cement mortar reduce by adopting sea sand.

Keywords： sea sand recycled aggregate concrete     recycled coarse aggregate replacement percentage     sea sand chloride    

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Punching shear behavior of recycled aggregate concrete slabs with and without steel fibres

Jianzhuang XIAO, Wan WANG, Zhengjiu ZHOU, Mathews M. TAWANA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 725-740 doi: 10.1007/s11709-018-0510-6

Abstract: A study on the punching shear behavior of 8 slabs with recycled aggregate concrete (RAC) was carriedThe two main factors considered were the recycled coarse aggregate (RCA) replacement percentage and the

Keywords： recycled aggregate concrete     steel fibres     slab     punching shear     recycled coarse aggregates replacement percentage    

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Long term performance of recycled concrete beams with different water–cement ratio and recycled aggregate

Jingwei YING; Feiming SU; Shuangren CHEN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 302-315 doi: 10.1007/s11709-022-0803-7

Abstract: The purpose of this study is to reveal the service performance of recycled aggregate concrete (RAC) componentsfor different values of water−cement ratio and replacement rate of recycled coarse aggregate (RCA).Generally, the concrete strength decreases with the increase of the replacement rate of RCA, in orderResults showed that the damage pattern of RAC was the same as that of natural aggregate concrete (NACThe brittleness of concrete before failure can be reduced more effectively by adjusting the replacement

Keywords： recycled concrete     beam     the replacement rate of recycled coarse aggregate     water–cement ratio     digital    

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Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1400-1414 doi: 10.1007/s11709-021-0779-8

Abstract: Aggregates are the biggest contributor to concrete volume and are a crucial parameter in dictating itsAs such, a detailed experimental investigation was carried out to evaluate the effect of sand-to-aggregatevolume ratio (s/a) on the mechanical properties of concrete utilizing both destructiveFor investigation, standard cylindrical concrete samples were made with different s/a (The careful analysis demonstrates that aggregate proportions and size need to be optimized for formulating

Keywords： aggregates     non-destructive testing     sand-to-aggregate volume ratio (s/a)     maximum aggregate    

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Chloride ingress and macro-cell corrosion of steel in concrete made with recycled brick aggregate

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1358-1371 doi: 10.1007/s11709-021-0769-x

Abstract: An investigation on chloride ingress and macro-cell corrosion of steel bars in concrete made with recycledbrick aggregate (RBA) was carried out.As control cases, virgin brick aggregate (BA) and stone aggregate (SA) were also investigated.The chloride ingress as well as corrosion of steel bars in concrete made with the different types ofaggregate is ordered as RBA > BA > SA.

Keywords： brick aggregate     chloride ingress     macro-cell corrosion     recycled brick aggregate    

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Comments on “Prediction on CO uptake of recycled aggregate concrete”, Frontiers of Structural and Civil

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1504-1506 doi: 10.1007/s11709-021-0782-0

Abstract: A methodology to compute the CO2 uptake of recycled aggregate concrete is proposed in thetypos in several formulas, it is found that the approach to estimate the specific surface area of the recycledfindings of the commented paper, an alternative approach to estimate the specific surface area of the recycled
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Understanding the behavior of recycled aggregate concrete by using thermogravimetric analysis

Subhasis PRADHAN, Shailendra KUMAR, Sudhirkumar V. BARAI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1561-1572 doi: 10.1007/s11709-020-0640-5

Abstract: The physio-chemical changes in concrete mixes due to different coarse aggregate (natural coarse aggregateand recycled coarse aggregate (RCA)) and mix design methods (conventional method and Particle PackingThe PPM mix designed concrete mixes exhibit lower .Recycled aggregate concrete (RAC) mixes exhibit higher and after 7 d of curing, contrary to that afterThe compressive strength of concrete and cannot be correlated for concrete mixes with different aggregate

Keywords： recycled aggregate concrete     Particle Packing Method     thermogravimetric analysis     chemically bound water    

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Compressive behavior and microstructure of concrete mixed with natural seawater and sea sand

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1347-1357 doi: 10.1007/s11709-021-0780-2

Abstract: Noncorrosive reinforcement materials facilitate producing structural concrete with seawater and sea sandThis study investigated the properties of seawater and sea sand concrete (SSC), considering the curingXRD patterns identified Friedel’s salt phase due to the chlorides brought by seawater and sea sand.

Keywords： seawater and sea sand concrete     compressive strength     strain field     microstructure     hydration products    

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Behaviors of recycled aggregate concrete-filled steel tubular columns under eccentric loadings

Vivian W. Y. TAM, Jianzhuang XIAO, Sheng LIU, Zixuan CHEN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 628-639 doi: 10.1007/s11709-018-0501-7

Abstract: The paper investigates the behaviors of recycled aggregate concrete-filled steel tubular (RACFST) columnsThe main parameters varied in this study are recycled coarse aggregate replacement percentages (0%, 30%Experimental results showed that the ultimate stresses of RACFST columns decreased with increasing recycledThe recycled coarse aggregate replacement percentages have limited influence on the ultimate stressesof the RACFST columns and has more effect than that of the normal aggregate concrete-filled steel tubular

Keywords： concrete filled steel tubes     recycled aggregate concrete     columns     expansive agent     eccentric load    

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Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 637-648 doi: 10.1007/s11709-023-0902-0

Abstract: Enhancing the chloride resistance of recycled concrete in a complex environment via carbonization facilitatesthe popularization and application of recycled concrete and alleviates the greenhouse effect.In this study, the chloride ion diffusion and deformation properties of recycled concrete after carbonizationThe results obtained demonstrate that the chloride ion diffusivity of recycled concrete first decreasesThe variation in the chloride ion diffusivity of the carbonized recycled aggregate concrete with the

Keywords： recycled concrete     carbonated recycled coarse aggregate     biaxial compression     chloride diffusion     stress    

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different regression techniques and nature-inspired optimization algorithms to predict carbonation depth of recycledaggregate concrete

Frontiers of Structural and Civil Engineering 2023, Volume 18, Issue 1,   Pages 30-50 doi: 10.1007/s11709-024-1041-y

Abstract: The utilization of recycled aggregates (RA) for concrete production has the potential to offer substantialHowever, RA concrete is plagued with considerable durability concerns, particularly carbonation.To advance the application of RA concrete, the establishment of a reliable model for predicting the carbonationOn the one hand, concrete carbonation is a long and slow process and thus consumes a lot of time andlearning techniques to establish accurate prediction models for the carbonation depth (CD) of RA concrete

Keywords： recycled aggregate concrete     carbonation depth     nature-inspired optimization algorithms     extreme gradient    

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A new systematic firefly algorithm for forecasting the durability of reinforced recycled aggregate concrete

Wafaa Mohamed SHABAN; Khalid ELBAZ; Mohamed AMIN; Ayat gamal ASHOUR

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 329-346 doi: 10.1007/s11709-022-0801-9

Abstract: This study presents a new systematic algorithm to optimize the durability of reinforced recycled aggregateconcrete.flight to improve the firefly performance in forecasting the chloride penetrability of strengthened recycledaggregate concrete (RAC).of recycled aggregate (RA), is used as input to predict the migration coefficient of strengthened RAC

Keywords： chloride penetrability     recycled aggregate concrete     machine learning     concrete components     durability    

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Microbial-inspired self-healing of concrete cracks by sodium silicate-coated recycled concrete aggregates

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 1,   Pages 14-29 doi: 10.1007/s11709-023-0993-7

Abstract: Microbially induced carbonate precipitation (MICP) is a promising technique for the autonomous healing of concreteRecycled concrete aggregates (RCA) coated with sodium silicate have been proposed as protective carriersAlthough the presence of the coated RCA resulted in a loss of the splitting tension strength of the concreteConcrete incorporated with 20% RCA loaded with healing agents exhibited the best self-healing performancepackaging microbial healing agents and has great potential for developing cost-effective self-healing concrete

Keywords： self-healing     microbial-induced carbonate precipitation     water uptake     recycled concrete aggregate     protective    

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Experimental research on seismic behavior of recycled concrete frame under varying cyclic loading

SUN Yuedong, XIAO Jianzhuang, ZHOU Deyuan

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 302-308 doi: 10.1007/s11709-008-0050-6

Abstract: A study is conducted on the seismic behavior of one natural concrete frame and two recycled concreteframes with 100% recycled coarse aggregate whose scales are 1:2 entirely, and a comparative study isconcrete frames under low-reversed cyclic loading as well as the influence of different vertical loadingAnalysis on the basis of the experiment proves that it is entirely feasible to apply recycled concreteTheoretical base is provided for further study and practical application of recycled concrete structure

Keywords： different     aggregate     stiffness     practical application     % recycled    

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Research on recycled concrete and its utilization in building structures in China

Jianzhuang XIAO, Tao DING

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 215-226 doi: 10.1007/s11709-013-0212-z

Abstract: presents a brief introduction to current shaking table test research in China on structures built with recycledaggregate concrete (RAC).

Keywords： recycled aggregate concrete (RAC)     structural material     shaking table tests     building structure    

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Title Author Date Type Operation

Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregateconcrete

Journal Article

Punching shear behavior of recycled aggregate concrete slabs with and without steel fibres

Jianzhuang XIAO, Wan WANG, Zhengjiu ZHOU, Mathews M. TAWANA

Journal Article

Long term performance of recycled concrete beams with different water–cement ratio and recycled aggregate

Jingwei YING; Feiming SU; Shuangren CHEN

Journal Article

Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Journal Article

Chloride ingress and macro-cell corrosion of steel in concrete made with recycled brick aggregate

Journal Article

Comments on “Prediction on CO uptake of recycled aggregate concrete”, Frontiers of Structural and Civil

Journal Article

Understanding the behavior of recycled aggregate concrete by using thermogravimetric analysis

Subhasis PRADHAN, Shailendra KUMAR, Sudhirkumar V. BARAI

Journal Article

Compressive behavior and microstructure of concrete mixed with natural seawater and sea sand

Journal Article

Behaviors of recycled aggregate concrete-filled steel tubular columns under eccentric loadings

Vivian W. Y. TAM, Jianzhuang XIAO, Sheng LIU, Zixuan CHEN

Journal Article

Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Journal Article

different regression techniques and nature-inspired optimization algorithms to predict carbonation depth of recycledaggregate concrete

Journal Article

A new systematic firefly algorithm for forecasting the durability of reinforced recycled aggregate concrete

Wafaa Mohamed SHABAN; Khalid ELBAZ; Mohamed AMIN; Ayat gamal ASHOUR

Journal Article

Microbial-inspired self-healing of concrete cracks by sodium silicate-coated recycled concrete aggregates

Journal Article

Experimental research on seismic behavior of recycled concrete frame under varying cyclic loading

SUN Yuedong, XIAO Jianzhuang, ZHOU Deyuan

Journal Article

Research on recycled concrete and its utilization in building structures in China

Jianzhuang XIAO, Tao DING

Journal Article