Cement

TL;DR: In this paper, the effects of size and shape of recycled polyethylene terephthalate (PET) aggregate on the fresh and hardened properties, including abrasion resistance, of concrete were evaluated.

TL;DR: Results indicate that PET-filled concrete, when volume proportion and particle size of PET increased, showed a decrease in compressive strength, splitting tensile strength, modulus of elasticity and ultrasonic pulse velocity; however, the water absorption increased.

TL;DR: In this article, a relationship between the Hydraulic Index (HI) of slag at 7 and 28 days (HI7 and HI28) and the influencing properties of slags, namely, glass content, fineness and chemical composition, was investigated.

TL;DR: In this article, the effects of the size distribution of Portland cement particles on a variety of performance properties are explored via computer simulation and a few experimental studies, including setting time, heat release, capillary porosity percolation, diffusivity, chemical shrinkage, autogenous shrinkage and internal relative humidity evolution.

TL;DR: In this paper, the effect of nano-alumina on the elastic modulus and compressive strength of cement composite, cylindrical specimens ( Φ 20 × 40 mm) with different volume fractions of nano alumina at different curing days (3 days, 7 days, 28 days).