Durability of Concrete with Recycled Coarse Aggregates
The main goal of this study is to evaluate the effect of standard and high-performance superplasticizers on the key durability-related properties (shrinkage, water absorption by immersion and by capillarity, carbonation and chloride penetration resistance) of concrete made with different percentages of recycled coarse aggregates (RCA) from
Effect of plasticizer dosage on properties of multiple
The plasticizer dosage was increased in 0.1% increments from 0.8 to 1.2% of the cement content. Each mix was named ‘recycling times-plasticizer dosage’. For example, R1-0.8 stands for concrete containing 100% RCA1, as coarse aggregate, and the plasticizer dosage is 0.8% of cement content.
Evaluating the material properties of recycled
The impact of these waste has environmental, social as well as economical adverse effects. While common and easier method of C&D waste management in Sri Lanka has been dumping in landfills,...
Effects of plasticizers on recycled concrete - ResearchGate
EFFECTS OF PLASTICIZERS ON RECYCLED CONCRETE . Vol. 3, No. 10, Dec. 2008. 527. 2-For 5% plasticizer the strength is negligible an d no strength exists for 8.5% plasticizer. This .
Engineering Performance of Concrete Incorporated with
Incorporating recycled plastic waste in concrete manufacturing is one of the most ecologically and economically sustainable solutions for the rapid trends of annual plastic disposal and natural resource depletion worldwide. This paper comprehensively reviews the literature on engineering performance of recycled high-density polyethylene (HDPE) incorporated in concrete in the forms of
- Do plasticizers reduce the strength of recycled concrete?
- Our previous researches have demonstrated that recycled aggregates diminish the strength of concrete due to the addition of water. The present communication treats of the effects of plasticizers on recycled concrete. The principal aim is to recapitulate the original strength by increasing the concrete workability without adding water.
- Do superplasticizers affect the durability of concrete made with fine aggregates?
- Further studies are needed to understand how superplasticizers can affect the durability performance of concrete made with fine recycled concrete aggregates and to compare it with their influence on the performance of concrete made with coarse concrete recycled aggregates, both in mechanical terms [50] and durability terms [51].
- Can superplasticizers be used in recycled aggregate concrete?
- However, introducing superplasticizers in recycled aggregate concrete can help to enhance the concrete’s performance and offset this higher susceptibility. View all available purchase options and get full access to this article.
- Does the dosage of plasticizer affect the compressive strength of concrete?
- Finally, experience shows that the dosage of the plasticizer certainly presents an important result in terms of the compressive strength of concrete, as stated taking into account the technical instructions of the mix manufacturers.
- Does multiple recycling increase water absorption of concrete?
- Recently, studies on multiple recycling of concrete have been attracting attention. In general, multiple recycling increases adhered mortar content of aggregate, consequently, the water absorption of the multiple recycled aggregate is increased, and the slump of concrete with the multiple recycled aggregate is reduced.
- Does Fra affect concrete mixes containing superplasticizers?
- Whilst the higher specific surface of FRA may negatively influence mixes containing superplasticizers because the polymeric chains have a larger contact area, the steric effects produced in concrete made with polycarboxylic superplasticizers may mitigate the negative effect of incorporating FRA. Fig. 9.
