Multi-functional concrete with recycled aggregates /

Multi-functional Concrete with Recycled Aggregates consists of chapters covering multiple aspects of sustainable concrete materials, inclusive of engineering, environmental, policy, and management factors. With contributing authors worldwide from a variety of disciplines bridged by the theme of sust...

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Bibliographic Details
Corporate Author:	ScienceDirect (Online service)
Other Authors:	Xu, Yidong (Editor), Jin, Ruoyu (Editor)
Format:	eBook
Language:	English
Published:	Oxford : Woodhead Publishing, [2023]
Series:	Woodhead Publishing series in civil and structural engineering.
Subjects:	Concrete > Environmental aspects. Aggregates (Building materials) > Recycling. Béton > Aspect de l'environnement. Granulats > Recyclage. Aggregates (Building materials) > Recycling Concrete > Environmental aspects Electronic books.
Online Access:	Connect to the full text of this electronic book

Table of Contents:

Front Cover
Multi-functional Concrete with Recycled Aggregates
Multi-functional Concrete with Recycled Aggregates
Copyright
Contents
List of contributors
Preface
I
Recycled aggregate concrete
1
Sources of recycled aggregates for concrete production
1.1 Introduction
1.1.1 Recycled aggregates for sustainable concrete production
1.2 Sources of recycled aggregates
1.2.1 Recycled aggregates from construction and demolition (C&amp
D) wastes
1.2.1.1 The composition of C&amp
D waste
1.2.2 Recycled aggregates from mining and industrial sources
1.2.2.1 Mining by-products as recycled aggregates
1.2.2.2 Recycled aggregates from industrial waste materials
1.2.3 Recycled aggregates from other sources
1.2.3.1 Glass as recycled aggregate
1.2.3.2 Plastic as recycled aggregate
1.2.4 Concluding remark
References
2
Pretreatment of recycle aggregates
2.1 Background
2.2 Recycled aggregates and treatments
2.3 Pretreatment techniques
2.3.1 Coating techniques
2.3.1.1 Coating with cement slurry
2.3.1.2 Coating with cement slurry and fly ash
2.3.1.3 Coating with geopolymer slurry
2.3.1.4 Coating with water-soluble polycarboxylate dispersant
2.3.2 Nano-modification of aggregate surface
2.3.3 Acid soaking
2.3.4 Carbonation treatment
2.3.5 Polymer treatment
2.3.6 Sodium-silicate solution
2.3.7 Bio-deposition
2.3.8 Washing
2.3.9 Thermal treatment
2.3.10 Mechanical treatment
2.4 Effects of treatment on concrete performance
2.5 Comparison of treated, untreated, and natural aggregates
2.6 Conclusion
References
Further reading
II
High-performance concrete with recycled aggregates
3
Properties of recycled aggregates for high performance concrete
3.1 Introduction
3.2 Sources of RAs for HPC
3.3 Shapes of RA.
3.4 Strength requirements of RA for HPC
3.5 Density of RA and its influence on HPC
3.6 Water absorption of RA for HPC
3.7 Aggregate crushing value of RA for HPC
3.8 Aggregate impact value of RA for HPC
3.9 Modulus of elasticity of HPC containing RA
3.10 Cleanliness of RA for HPC
3.11 The soundness of RA for HPC
3.12 Thermal properties of RA
3.13 RA specific gravity and the absorption capacity
3.14 Testing of aggregates
3.15 Grading of recycled concrete aggregate
3.16 Testing of RCA for HPC
3.17 Major influencing factors of RCA on HPC mechanical properties
3.18 Major influencing factors of RCA on HPC durability properties
3.19 Conclusion
References
Further reading
4
Rheological properties of fresh recycled concrete
4.1 Introduction
4.1.1 Rheology
4.1.2 Rheological properties in concrete application
4.2 Rheological testing equipment and principle
4.2.1 Working principle of ICAT rheometer
4.2.2 Working principle of ConTec Viscometer 5
4.3 Case study: effect of moisture condition and brick content on rheological properties of fresh concrete
4.3.1 Introduction
4.3.2 Materials and methods
4.3.2.1 Materials
4.3.2.2 Mix proportions
4.3.3 Mixing procedures and test methods
4.3.3.1 Mixing procedures
4.3.3.2 Time varying properties of moisture content
4.3.3.3 Slump and slump flow
4.3.3.4 Rheological properties
4.3.4 Results and discussion
4.3.4.1 Time varying characteristics of moisture content
4.3.4.2 Fresh properties of concrete containing RCA with different moisture contents
4.3.4.3 Fresh properties of concrete with RCA containing RBA
4.4 Conclusions
References
5
Durability of high-performance recycled aggregate concrete
5.1 Introduction
5.2 Research significance.
5.3 Durability of RAC exposed to harsh environment or subjected to mechanical loadings
5.3.1 Effect of single aggressive environment
5.3.1.1 Carbonation
5.3.1.2 Chloride penetration
5.3.1.3 Frost resistance
5.3.1.4 Sulfate corrosion
5.3.1.5 Alkali-silica reaction
5.3.2 Coupled effects of multifactorial action
5.3.2.1 Effect of external loads on RAC durability
5.3.2.2 Effect of environmental actions on RAC durability
5.3.2.3 Effect of the coupled action of loads and environment on RAC durability
5.4 Strengthening of RAC durability
5.4.1 Physical strengthening method
5.4.2 Chemical strengthening method
5.4.3 Biological strengthening method
5.5 Conclusions and prospect
Acknowledgments
References
6
Research on improving the properties and functionalities of recycled aggregate concrete
6.1 Introduction
6.1.1 Physical method
6.1.1.1 Particle shaping method
6.1.1.2 Selective heating and grinding
6.1.2 Wet treatment method
6.1.3 Chemical method
6.2 Recycled aggregate concrete with nanomaterial
6.2.1 Mix design
6.2.2 Testing method
6.2.2.1 Pore structure
6.2.2.2 Chloride diffusion
6.2.3 Test results and discussion
6.2.3.1 Pore structure
6.2.3.2 Compressive strength and chloride diffusivity
6.3 CO2 curing
6.3.1 Carbonation mechanism
6.3.2 Test result analysis
6.3.2.1 Workability analysis
6.3.2.2 Compressive strength
6.4 Conclusions
References
7
Creep and shrinkage performance of high-performance recycled aggregate concrete
7.1 Introduction
7.2 Factors affecting shrinkage and creep of RAC
7.2.1 Drying shrinkage
7.2.1.1 RCA
Properties of RCA
Content of RCA
Particle size of RCA
7.2.1.2 Supplementary cementitious materials
7.2.1.3 Chemical admixtures
7.2.1.4 Design and mixing methods
7.2.2 Creep
7.2.2.1 RCA.
Properties of RCA
Content of RCA
Particle size of RCA
7.2.2.2 Supplementary cementitious materials
7.2.2.3 Chemical admixtures
7.2.2.4 Design and mixing methods
7.2.2.5 Other factors
7.3 Shrinkage and creep models of RAC
7.3.1 Drying shrinkage model
7.3.2 Creep model
7.4 Conclusions and outlooks
References
8
Producing high-performance concrete from contaminated recycled aggregates
8.1 Introduction
8.2 Bidirectional electromigration rehabilitation
8.2.1 Technical principle of bidirectional electromigration rehabilitation
8.2.2 Repair effect in existing concrete
8.3 Recycling of chloride-attacked aggregate based on electrochemical treatment
8.3.1 Experimental procedures
8.3.1.1 Materials
8.3.1.2 Inhibitor
8.3.1.3 Concrete mix proportions
8.3.1.4 Experiment on anodic material screening
8.3.1.5 Experiment on optimization of electrochemical parameters
8.3.2 Results of intervention in curing period
8.3.2.1 Suitable anodic material
8.3.2.2 Optimized electrochemical parameters
8.4 Case study
8.4.1 Project profile
8.4.2 RCAAC laminated slab design
8.4.2.1 Concrete mix proportions
8.4.2.2 BIEM treatment of assembled laminated slab
8.4.2.3 Performance of assembled laminated slab after BIEM treatment
8.4.2.4 Durability indictors of assembled laminated slab after BIEM treatment
8.4.3 Effect of recycling
8.4.3.1 Loading capacity and failure mode
8.4.3.2 Analysis of bending performance
8.4.3.3 Durability performance
8.5 Conclusions and future prospects
References
III
Newly developed multi-functional recycled aggregate concrete
9
Photocatalytic recycled aggregate concrete for air-purifying purpose
9.1 Introduction
9.2 Recycled aggregate concrete (RAC)
9.3 TiO2-mediated photocatalysis.
9.4 Photocatalytic functional RAC for degrading air pollutant
9.4.1 Photocatalyst adding methods
9.4.2 Air purifying function
9.4.2.1 Recycled glass aggregate (RGA)
9.4.2.2 Recycled concrete aggregate (RCA)
9.4.2.3 Other types of recycled aggregate
9.4.3 Application of photocatalytic RAC
9.5 Summary and perspective
References
10
Self-cleaning fair-faced concrete adopting recycled aggregates
10.1 Introduction
10.2 Mix preparation design of fair-faced concrete adopting recycled aggregate
10.2.1 Materials
10.2.2 Mix preparation design
10.2.3 Optimization of the concrete mix proportion parameters
10.3 Preparation of self-cleaning fair-faced concrete with recycled aggregates
10.3.1 Preparation methods
10.3.2 Self-cleaning efficiency test method
10.3.3 Factors affecting the self-cleaning efficiency of concrete
10.4 Case study
10.5 Conclusions and future prospects
10.5.1 Conclusions
10.5.2 Future prospects
Acknowledgments
References
11
Recycled aggregate concrete for pavement rapid repair
11.1 Introduction
11.2 Design specifications of RARRC
11.2.1 Fast development of early strength
11.2.2 Good bonding between the original and repaired concrete
11.2.3 Low shrinkage
11.2.4 Good durability
11.2.5 Good workability
11.3 Rapid repair cement
11.3.1 Using Type III Portland cement with admixtures
11.3.2 Modifying ordinary Portland cement by admixtures with fast hardening properties
11.3.3 Use special cement with fast hardening properties
11.3.3.1 Calcium sulfoaluminate cement (CSA)
11.3.3.2 Magnesium phosphate cement (MPC)
11.3.3.3 Metakaolin-slag (MK-GGBS) blended geopolymer
11.4 Recycled aggregate concrete
11.5 Applications of RARRC
11.5.1 Preparation of RARRC
11.5.2 Mechanical performances of RARRC.