Eco-efficient Rendering Mortars

1. Mortars and sustainability

2. Rendering mortars
2.1. Introduction
2.2. Technology
2.3. Functional requirements
2.3.1. Workability
2.3.2. Micro-cracking
2.3.3. Water permeability
2.3.4. Water vapour permeability
2.3.5. Adhesion to the substrate
2.3.6. Impact resistance
2.3.7. Compatibility with substrate
2.3.8. Aesthetic appearance
2.3.9. Durability
2.4. Mortars standardization

3. Wastes
3.1. Introduction
3.2. Origin
3.2.1. Agricultural waste
3.2.2. Urban waste
3.2.3. Industrial waste
3.2.4. Hospital waste
3.3. Treatment
3.3.1. Crushing
3.3.2. Milling
3.3.3. Burning
3.3.4. The influence of waste treatment on its final characteristics
3.4. Properties
3.4.1. Chemical properties
3.4.2. Mineralogical properties
3.4.3. Physical properties
3.4.3.1. Shape
3.4.3.2. Roughness
3.4.3.3. Porosity
3.4.3.4. Water absorption
3.4.3.5. Size distribution

4. Mortars with incorporation of wastes: Characteristics of fresh mortars
4.1. Water/binder ratio
4.2. Workability
4.3. Bulk density
4.4. Water retention

5. Mortars with incorporation of wastes: Mechanical behaviour
5.1. Mechanical strength
5.1.1. Compressive strength
5.1.2. Flexural strength
5.1.3. Adherence strength
5.1.4. Impact resistance
5.2. Micro-cracking
5.2.1. Elasticity modulus
5.2.2. Fracture energy
5.2.3. Shrinkage

6. Mortars with incorporation of wastes: Water behaviour
6.1. Liquid water
6.1.1. Water absorption by capillarity
6.1.2. Permeability to water under pressure
6.2. Water vapour
6.2.1. Equivalent air thickness
6.2.2. Unidirectional drying

7. Durability
7.1. Compatibility with substrate
7.2. Aesthetic appearance

8. Life cycle assessment
8.1. Application to mortars
8.2. Case studies

9. References

Using recycled materials in mortars helps both reduce the amount of waste sent to landfill, and the use of natural resources in mortars. Industry, however, has been slow to trust and adopt waste products as raw materials for use in mortars. Eco-Efficient Rendering Mortars focuses on the incorporation of waste materials into cement-based renders, discussing the origins, treatment processes, and properties of relevant wastes. It aims to dispel mistrust through demonstrating the technical feasibility and environmental benefits of eco-efficient rendering mortars. The book considers the characteristics of different waste products, such as aggregates, fillers, binders and additions. The functional requirements of renders are discussed, alongside the impact of wastes on these requirements. Finally, the title considers the lifecycle of and durability of modified mortars. This book offers robust support for, and clear guidance on the use of wastes as a substitute for natural aggregates and binders.

• Presents evidence supporting the use of wastes as a substitute for natural aggregates and binders
• Characterizes wastes and considers how best to incorporate different kinds of waste into renders
• Gives detail on the technical efficiency and environmental impact of different waste materials on mortars
• Analyses the impact of wastes on render performance in terms of fresh state, mechanical, water, and durability
• Considers the lifecycle assessment and durability of modified mortars

Construction industry specialists; researchers in sustainable materials and products; researchers, graduate and post-graduate students in civil engineering, architecture, materials science, industrial management and allied fields