This paper is based on an experimental research that examined the effects of concrete`s major parameters on durability of concrete pavements and curbs under freezing and thawing cycles. These parameters include concrete mix design parameters such as water-cement ratio, fine aggregate percentage and using air entraining admixture and simulating real freeze-thaw cycles that infrastructures underg...

Limestone is widely used in the construction industry to produce Portland limestone cement (PLC) concrete. Systematic evaluations of hydration kinetics, compressive strength development, and carbonation resistance are crucial for the rational use of limestone. This study presents a hydration-based model for evaluating the influences of limestone on the strength and carbonation of concrete. Firs...

This paper preliminarily investigates the general transport properties (i.e., water sorptivity, water permeability, and gas permeability) of carbon-nanotube/cement composites. Carboxyl multi-walled carbon nanotubes (MWNTs) are dispersed into cement mortar to fabricate the carbon nanotubes (CNTs) reinforced cement-based composites by applying ultrasonic energy in combination with the use of surf...

Abstract The water-cement ratio is one of the key parameters grouting materials, which greatly affects working performance and mechanical properties materials. This paper studies physical properties, such as density, fluidity, consistency, bleeding rate, stone flexural compressive strength micro-cement materials with a 0.8:1, 1:1, 1.5:1 2.0:1 are investigated through variety indoor experiments....

Immediately after placement, gravitational forces and the local drying environment begin to influence the (micro)structure of a cement paste, mortar, or concrete. Depending on the mixture’s water-to-cementitious materials mass ratio (w/cm) (and aggregate volume fraction), the initial freshly cast material may be thought of either as a concentrated suspension of rigid particles in water or as a ...

The present work studies the influence of water-cement ratio and types mixing water on hydration process microstructure calcium sulphoaluminate (CSA) cement. Experimental tests setting time, physical properties, compressive strength, chemical shrinkage, X-ray diffraction (XRD), scanning electron microscopy (SEM) CSA cement paste were carried out. XRD analysis confirmed that main product is ettr...