...Prashant Tiwari; Abhishek Verma; Velaga Sarath Babu The use of recycled aggregates ( RA ) in structural concrete is limited by adhered mortar, high porosity, and weak interfacial transition zones, which adversely affect durability and mechanical performance. A combined treatment approach for RA...

... strength decreased to 33.81 MPa (≈9% reduction). Similar trends were observed for split tensile strength (3.45–3.27 MPa) and flexural strength (3.79–3.62 MPa). The optimum mix (BA10–PET10) exhibited a modulus of elasticity of 28 525 MPa and UPV of 4.05 km/s, indicating good-quality concrete. Durability...

... ) and other supplementary cementitious materials (SCMs) have emerged as promising candidates for enhancing the mechanical performance, durability, and environmental sustainability of geopolymer and alkali-activated concretes. This review comprehensively examines the influence of MK on alkali-activated...

...Thatikonda Naresh; S. Sunil Pratap Reddy; Saurabh Dubey; Mainak Mallik This study presents an integrated enhancement approach to improve the mechanical and durability properties of recycled aggregate concrete ( RAC ), which typically suffers from reduced strength and permeability. A novel...

... at handling complex, non-linear relationships, providing insights into the most critical factors for RAC strength and durability. These findings contribute to developing a novel predictive model for RAC in prestressed segmental bridges. Shaped by empirical evidence and ML insights, this model offers...

... typically lead to non-satisfactory performance of concrete in terms of strength and durability. This was remedied by incorporation of hyperplasticisers, which offset the negative effects of loss of workability, segregation, bleeding and strength reduction. This study describes three field studies undertaken...

... cement at a fixed dosage of 50% by weight of powder, and natural coarse and fine aggregates were replaced with coarse and fine recycled concrete aggregates (RCAs), respectively, at replacement levels of 0, 50 and 100% by volume. The durability properties of the SCC mixes were studied using the rapid...

...-fine steatite powder on the mechanical as well as durability properties of slag- and fly-ash-based alkali-activated concrete. Six replacement levels (10, 20, 30, 40, 50 and 60%) of slag and fly ash with steatite powder were adopted and activated using a sodium-based activator. Heat curing and ambient...