Mohammad Bayati

Yildiz Technical University · Department of Civil Engineering

Developing sustainable construction products has been showing a rising trend recently. Geopolymer composites are remarkable binding materials fabricated based on recycling and sustainability. In this paper, an experimental investigation was conducted to study some mechanical and durability characteristics of steel fiber-reinforced fly ash/slag-base...

In the present paper, the effect of using multi-walled carbon nanotubes (MWCNTs) with different concentrations of 0, 0.05, 0.1, and 0.15 wt% on the mechanical properties and microstructure of alkali-activated slag (AAS) mortars at temperatures of 23, 200, 400, 600, and 800°C was investigated. In order to investigate the strength parameters of speci...

Alkali-activated slag (AAS) is a promising alternative to ordinary Portland cement (OPC) as a sole binder for concrete structures and offers advantages such as superior acid resistance and higher strength development. However, AAS basically suffers from a high rate of drying shrinkage causing more cracks in AAS concrete compared to the OPC concrete...

The properties of mortars containing waste glass powder (WGP) as a cement substitute for sustainable construction at various high temperatures were investigated. For this purpose, specimens from four mixtures with WGP at various percentage levels of 0, 5, 10 and 15% were prepared and exposed to the specified temperatures. After that, the compressiv...

In this paper, the relationship between mechanical strength and void characteristics including porosity, the mean area of voids (MAV), and circularity was determined for the first time by analyzing the petrographic images of some cement mortars containing multi-walled carbon nanotubes (MWCNTs). The results showed that the compressive, tensile, and...

In this paper, the residual compressive strength behavior and the features of the alkali-activated slag (AAS) mortar made with five different replacement ratios of recycled concrete aggregates (RCA), i.e. 0, 25, 50, 75, and 100%, were investigated after being exposed to the target temperatures of 23, 200, 400, 600, and 800 °C. For this purpose, aft...

In this paper, the effect of curing period on the residual strength of Portland cement mortars containing multi-walled carbon nanotubes (MWCNTs) after 7 and 28 days of wet curing at target temperatures of 20, 200, 400, 600, and 800 �C was investigated. For this purpose, MWCNTs were added at ratios of 0.05, 0.1, and 0.15 wt% of Portland cement. Afte...