Durability And Performance Characteristics Of Recycled ...
Durability And Performance Characteristics Of Recycled Aggregate Concrete KK Sagoe Crentsil T Brown AH Taylor CSIRO Building Construction and Engineering Victoria Australia Summary: In recent years, the recycling of concrete to produce aggregates suitable for non-
PROPERTIES OF RECYCLED AGGREGATE CONCRETE
Mirjana Malešev, et al., Properties of recycled aggregate concrete Contemporary Materials, V −2 (2014) Page 241 of 249 aggregate is usually left out, in a way that it is completely replaced by the river sand [4,5]. Figure 3
Mechanical Properties Of Recycled Aggregates …
Recycled concrete aggregates produced from all but the poorest quality original concrete can be expected to pass the same tests. Recycled concrete aggregates contain not only the original aggregates, but also hydrated cement paste. This paste reduces the specific gravity and increases the porosity compared to similar virgin aggregates. Higher porosity of RCA leads to …
Performance characteristics of recycled concrete …
Use of recycled concrete aggregates (RCA) as a pavement material is one of the most sustainable engineering applications for the pavement industry. Investigation on the performance characteristics of RCA, such as elastic and stone deformations of RCA is therefore, needed to assess RCAs application as an unbound pavement material. In this study, repeated load tri …
Recycled Concrete Aggregate - an overview | …
Recycled Concrete Aggregate. Recycled aggregate concrete is defined as concrete manufactured with waste materials in order to reduce the negative environmental impact that results from the manufacturing process of cement, achieving a more sustainable product.
The Environmental Impact of Recycled Concrete
4. Characteristics of recycled concrete aggregate The international literature provided numerous works at recycled concrete aggregate area, mainly from the beginning of 1980 (Hansen, 1992). The topics most investigated are durability and mechanical characteristics. The quality of aggregates made of recycled concrete affects directly the
Characteristics of sustainable concrete incorporating ...
Characteristics of sustainable concrete incorporating recycled coarse aggregates and …. substantial modification in parent properties of cement based materials as these particles were very effective in filling the nano-sized pores of the C-S-H gel, augmenting the rate of hydrations by
Strength and Durability Evaluation of Recycled …
14.05.2015 · This stone discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete.
Properties of Recycled Aggregate Concrete | …
While the use of recycled concrete aggregate (RCA) is confined mainly to low-grade application, it would be more beneficial If high strength concrete (HSC) can be produced with demolished concrete ...
Recycled Aggregate - an overview | …
Recycled aggregate is defined as aggregate resulting from the processing of inorganic or mineral material previously used in construction (BS EN 12620, 2013; MPA, 2013). When consisting mainly of crushed concrete, it may be classified as recycled concrete aggregate (RCA).
(PDF) Strength Characteristics of Ternary …
This stone has studied the characteristics of recycled aggregates retrieved from crushed old concrete obtained from demolished structures, and five …
STRENGTH CHARACTERISTICS OF TERNARY BLENDED RECYCLED ...
The recycled aggregate concrete showed inferior quality than natural aggregate concrete in all aspects and many research works was done and reported by researchers to improve the characteristics of recycled aggregate concrete. (How 2003; Amnon 2004; Jianzhuang et al.
Effect of Recycled Sand Content on …
In concretes, the use of up to 100% recycled aggregate has no appreciable effect on compressive strength but does lower the modulus of elasticity, E, as the recycled aggregate content increases. If the recycled aggregate used in the manufacture of concretes contains up to 10% recycled sand, this sand has no appreciable effect on the compressive strength of the concrete…
Strength and Deformation Characteristics of …
When compacted at w opt, post-compaction saturation does not have any detrimental effect on q max of recycled concrete aggregate. The viscous aspects of the stress-strain characteristics were evaluated. Upon the restart of MLfollowing each creep stage, t he specimen exhibited very stiff and nearly elastic response for some stress range followed ...
Types of Concrete & Characteristics | Concrete …
The concrete where no vibration is required. Of different types of concrete, Self compacting concrete does not require any vibrator for compaction. The concrete is compacted due to its own weight. It is also called self consolidated concrete or flowing concrete. It can be also categorized as high performance concrete as the ingredients are the ...
Effect of Recycled Aggregate Characteristics on …
The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete …
Characteristics of Aggregates - Civil Snapshot
Aggregates for Concrete. Aggregates must conform to certain requirements and should consist of clean, hard, strong, and durable particles free of chemicals, coatings of clay, or other fine materials that may affect the hydration and bond of the cement paste. The characteristics of the aggregates influence the properties of the concrete.
Durability characteristics of recycled aggregate …
Durability characteristics of recycled aggregate concrete were studied with Rapid chloride penetration test (as per ASTMC1202), sorptivity test and acid test to assess resistance against chloride ion penetration, capillary suction and stone attack respectively. Mix design for 50 MPa gives around 35 MPa after replacing natural aggregate with ...