Description
With increasing world population and urbanization, the depletion of natural resources and generation of waste materials is becoming a considerable challenge. As the number of humans has exceeded 7 billion people, there are about 1.1 billion vehicles on the road, with 1.7 billion new tires produced and over 1 billion waste tires generated each year. In the USA, it was estimated in 2011 that 10% of scrap tires was being recycled into new products, and over 50% is being used for energy recovery, while the rest is being discarded into landfills or disposed. The proportion of tires disposed worldwide into landfills was estimated at 25% of the total number of waste tires. Likewise, in 2013, Americans generated about 254 million tons of trash. They only recycled and composted about 87 million tons (34.3%) of this material. On average, Americans recycled and composted 1.51 pounds of individual waste generation of around 4.4 pounds per person per day. In 2011, glass accounted for 5.1 percent of total discarded municipal solid waste in the USA. Moreover, energy production and other sectors are generating substantial amounts of sludge, plastics and other post-consumer and industrial by-products. In the pursuit of its sustainability goals, the construction industry has a potential of beneficiating many such byproducts in applications that could, in some cases, outperform the conventional materials using virgin ingredients. This Special Publication led by the American Concrete Institute’s Committee 555 on recycling is a contribution towards greening concrete through increased use of recycled materials, such as scrap tire rubber, post-consumer glass, reclaimed asphalt pavements, incinerated sludge ash, and recycled concrete aggregate. Advancing knowledge in this area should introduce the use of recycled materials in concrete for applications never considered before, while achieving desirable performance criteria economically, without compromising the long-term behavior of concrete civil infrastructure.
Table of Contents
SP-314—1
Recycling Tire Rubber in Cement-Based Materials
Authors: Mahmoud Reda Taha, Amr S. El-Dieb and Moncef L. Nehdi
SP-314—2
Analytical Modeling of the Main characteristics of Crumb Rubber Concrete
Authors: Osama Youssf, Mohamed A. ElGawady, Julie E. Mills, Xing Ma
SP-314—3
Dynamic Properties of High Strength Rubberized Concrete
Authors: A. Moustafa and M. A. ElGawady
SP-314—4
Evaluation of Fly Ash Based Concretes Containing Post-Consumer
Glass Aggregates
Authors: Colter Roskos, Michael Berry, and Jerry Stephens
SP-314—5
Reclaimed Asphalt Pavement as Aggregate in Portland Cement Concrete
Authors: Michael Berry, Bethany Kappes, and David Schroeder
SP-314—6
Physical and Mechanical Properties of Mortars Containing Incinerated
Sludge Ash and Silica Fume
Authors: Anant Parghi and M. Shahria Alam
SP-314—7
Characteristics of Concrete with High Volume Coarse Recycled Concrete Aggregate
Authors: Anto Sucic and Medhat Shehata
SP-314—8
Fresh, Mechanical, and Durability Characteristics of Self-Consolidating
Concrete Incorporating Recycled Concrete Aggregate
Authors: Yasser Khodair and Bhagiratha Bommareddy
SP-314—9
Flexural Strength of Reinforced Concrete Beams Incorporating Coarse
Recycled Concrete Aggregate
Authors: Ardavan Yazdanbakhsh, Lawrence C. Bank, and Jonathan Rosena
SP-314—10
Behavioral Model for Recycled Aggregate Concrete Under Axial Compression
Authors: Mohamed Mahgoub, Amin Jamali and Mohamed Ala Saadeghvaziri
SP-314—11
Durability of Recycled Aggregate Concrete: A Review
Authors: A.M. Said, A. Ayad, E. Talebi and A.C. Ilagan