May 10,  · This study presented is interested to identify the influence of the use of recycled concrete aggregates (RCA) on mechanical properties (compressive strength, tensile and Modulus of elasticity), rheological properties (workability, yield stress, and plastic viscosity), and total shrinkage of concrete. Coarse ordinary aggregates (COA) are partially substituted with RCA and an amount of

Although aggregates are most commonly known to be inert filler in concrete, the different properties of aggregate have a large impact on the strength, durability, workability, and economy of concrete. These different properties of aggregate allow designers and contractors the most flexibility to meet their design and construction requirements.

Berndt ( ) found that recycled aggregate concrete mixtures containing 50% slag gave the best overall performance of vibrated concrete. Kou . et al. (2007) reported that SCC with class F fly ash improves the mechanical and durability properties of recycled aggregate concrete. Kou and al.

Apr 01,  · This study evaluated the use of recycled concrete as coarse aggregate in new concrete pavements. Recycled concrete aggregate (RCA) produced from demolished pavements in three geographically-dispersed locations in Washington state were used to perform tests on aggregate characteristics, fresh concrete properties, and hardened concrete properties.

Dec 21,  · But Evangelista and de Brito found that the use This paper presented the experiment results of ren- of fine recycled concrete aggregates did not jeopardize dering mortars prepared with recycled fine aggregate. the mechanical properties of concrete, for replacement The rheological and mechanical behaviours of rendering mortar were evaluated.

The results reveal that the type and content of fine aggregate have an effect on the rheological properties and mechanical strength of UHPC. Under the same mix proportion, the yield stress and plastic viscosity of recycled sand UHPC are higher than those of river sand UHPC, manufactured sand UHPC and aeolian sand UHPC, mainly due to its high

Jul 07,  · The rheological properties of concrete mixtures are presently important when new technologies for transporting, handling, placing, and compacting concrete are used in new concrete construction technologies. A new methodology and equipment, the remolding type viscometer, was developed for testing the rheological properties of concrete mixtures.

Sep 30,  · W. Z. Taffese, “Effect of recycled coarse aggregate on concrete properties,” in Proceedings of International Conference of Advances in Cement and Concrete Technology in Africa, pp. 1007–1014, BAM Federal Institute for Materials Research and Testing, Johannesburg, South Africa, January 2013. View at: Google Scholar

Jan 27,  · Using waste rubber in asphalt mixes has become a common practice in road construction. This paper presents the results of a study on the rheological characteristics of rubber-modified asphalt (RMA) concrete under static and dynamic loading conditions. A number of static and dynamic creep tests were conducted on RMA mix specimens with different rubber sizes and contents, and a series of

N2 - This paper presents the experimental results of a study on comparing the difference in properties of recycled aggregates (RAs) with varying amounts of old adhered mortar obtained from different sources and evaluating the influence of the different RAs on the mechanical and durability properties of recycled aggregate concrete (RAC).

properties of recycled fine aggregate and recycled coarse aggregate & also compares these properties with. natural aggregates. Basic changes in all aggregate properties are determined and their effects on concreting. work are discussed at length. Similarly the properties of recycled

Nov 11,  · Rheological and Mechanical Properties of Ultra-High-Performance Concrete Containing Fine Recycled Concrete Aggregates. November ; Materials 12 We aimed to study the rheological properties

Recycling is a logical option for materials that are not suitable for composting. One of these materials is iron mines waste that, according to their compounds, can be used as a substitute part of cement in concrete. For this aim, rheological and mechanical properties and durability

Rheological properties of asphalt binders modified with recycled materials: A comparison with Styrene-Butadiene-Styrene (SBS). M., Gozali Asl, F., Ameri, M., 2015. Effects of copper slag and recycled concrete aggregate on the properties of CIR mixes with bitumen emulsion, rice husk ash, Portland cement, and fly ash. Construction and

May 14,  · This paper 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.

RCA Recycled concrete aggregate. Figure 1 Sources of recycled aggregates. Applications and limitations A comprehensive range of engineering properties of concrete made with such aggregate and many examples of their applications in Australia have been reported12.