A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mechanical properties of concrete produced with recycled coarse aggregates – Influence of the use of superplasticizers
Highlights Influence of the aggregates’ crushing process on the concrete’s (RAC) performance. Influence on concrete mechanical properties of coarse aggregates from concrete waste. Influence of two types of superplasticizer (average and high water-reducing capacity). Relative efficiency of superplasticizers in RAC compared with conventional concrete.
Abstract Waste management has become vitally important since the demand for natural resources and the amount of construction and demolition waste have greatly increased, putting huge pressure on the environment. The main goal of this study is to evaluate the effects of the introduction of superplasticizers on some mechanical properties of concrete with recycled concrete aggregates and compare them with the corresponding properties of conventional concrete made with natural aggregates. The experimental program is described and the results of workability, specific density, compressive strength, splitting tensile strength and abrasion resistance tests carried out on concrete are presented. Two different crushing processes and their effects on aggregate properties were tested. By varying the replacement percentage of natural by recycled aggregates, with or without the addition of superplasticizers, it was possible to identify some weaknesses and strengths of the recycled aggregates concrete which can contribute to developing the more widespread use of this material.
Mechanical properties of concrete produced with recycled coarse aggregates – Influence of the use of superplasticizers
Highlights Influence of the aggregates’ crushing process on the concrete’s (RAC) performance. Influence on concrete mechanical properties of coarse aggregates from concrete waste. Influence of two types of superplasticizer (average and high water-reducing capacity). Relative efficiency of superplasticizers in RAC compared with conventional concrete.
Abstract Waste management has become vitally important since the demand for natural resources and the amount of construction and demolition waste have greatly increased, putting huge pressure on the environment. The main goal of this study is to evaluate the effects of the introduction of superplasticizers on some mechanical properties of concrete with recycled concrete aggregates and compare them with the corresponding properties of conventional concrete made with natural aggregates. The experimental program is described and the results of workability, specific density, compressive strength, splitting tensile strength and abrasion resistance tests carried out on concrete are presented. Two different crushing processes and their effects on aggregate properties were tested. By varying the replacement percentage of natural by recycled aggregates, with or without the addition of superplasticizers, it was possible to identify some weaknesses and strengths of the recycled aggregates concrete which can contribute to developing the more widespread use of this material.
Mechanical properties of concrete produced with recycled coarse aggregates – Influence of the use of superplasticizers
Matias, D. (author) / de Brito, J. (author) / Rosa, A. (author) / Pedro, D. (author)
Construction and Building Materials ; 44 ; 101-109
2013-03-02
9 pages
Article (Journal)
Electronic Resource
English
100NACTP1 , 100% natural aggregates concrete with primary crushing , 100RACTP1 , 100% recycled aggregates concrete with primary crushing , 100NACTP2 , 100% natural aggregates concrete with primary and secondary crushing , 100RACTP2 , 100% recycled aggregates concrete with primary and secondary crushing , RC<hsp></hsp>=<hsp></hsp>100NACTP2 , reference concrete , 100RACSP0<hsp></hsp>=<hsp></hsp>100RACTP1 , 100% recycled aggregates concrete without superplasticizer , 100RACSP1 , 100% recycled aggregates concrete with average superplasticizer , 100RACSP2 , 100% recycled aggregates concrete with high-performance superplasticizer , 50RACSP0 , 50% recycled aggregates concrete without superplasticizer , 50RACSP1 , 50% recycled aggregates concrete with average superplasticizer , 50RACSP2 , 50% recycled aggregates concrete with high-performance superplasticizer , 25RACSP0 , 25% recycled aggregates concrete without superplasticizer , 25RACSP1 , 25% recycled aggregates concrete with average superplasticizer , 25RACSP2 , 25% recycled aggregates concrete with high-performance superplasticizer , Recycled coarse aggregates , Concrete , Superplasticizers , Compressive strength , Splitting tensile strength , Abrasion
| British Library Online Contents | 2013
Durability of Concrete with Recycled Coarse Aggregates: Influence of Superplasticizers
| British Library Online Contents | 2014
Mechanical Properties of Concrete with Coarse Recycled Aggregates
| British Library Online Contents | 2004