Influence of cement and aggregate type on steam-cured concrete – an experimental study

Abstract

The effects of aggregate and cement type on the properties of steam-cured concrete were explored. Ordinary Portland cement (OPC) and high early strength cement (HESC) were used as binders, and recycled and natural aggregates were used as inert mineral filler aggregates in the concrete. The developed concretes exhibited adequate levels of compressive strength after steam curing. Depending on the type of coarse and fine aggregates utilised, the concretes incorporating OPC developed 42–72% of their design strength after 1 d; the range was 52–83% for concretes made with HESC. At all ages, the HESC concretes had about 10% greater strength than the OPC concretes. Abrasion and skid resistance parameters were also determined. Although the concretes incorporating HESC and recycled aggregates had lower mechanical strength, the abrasion and skid resistance parameters were superior to the other mixtures, meaning they could be usefully utilised in pavement structures, flooring and slabs. With proper mixture proportioning, adequate strength can be achieved.

Recycled concrete with coarse recycled aggregate. An overview and analysis

“…Additionally, the curing process may reduce the concrete strain due to shrinkage (86,87). In a recent research, Hanif et al (88) reported that the use of recycled aggregates with high early strength cement and steam curing method led to an improvement of shrinkage performance, lowering early-age cracking.…”

Investigation on Comparison of Morphological Characteristics of Various Coarse Aggregates before and after Abrasion Test

“…Several researchers have reported coarse aggregates with good morphology can provide enough strength and good structural stability to the asphalt pavement [14][15][16]. Beside the crushed stone aggregate, the recycled aggregates' abrasion resistance and morphological characteristics also have a significant effect on the pavement performances of asphalt mixture [17][18][19].…”

Deterioration mechanism of steam-cured concrete subjected to coupled environmental acid and drying action

“…Steam-cured concrete is cured in elevated temperature environment to obtain high strength in early age (generally less than 20 hours after casting), which can improve the efficiency of concrete production, reduce the construction time and generate significant economic benefits [6]. In some recent research, steam-cured is even combined with high early strength cement for faster strength growth [7][8][9], where the 1 day strength can typically reach 70% of the design strength [7]. Owing to above advantages, steam-cured concrete is commonly used in prefabricated elements of high-speed railway foundation structure in China, such as girder, track slab and sleeper.…”