In this study, the authors investigate various properties of coal gasification slag fine aggregate (CGS) when applied to high-strength concrete. The amount admixture using CGS concrete is lower than that ordinary initial compressive strength and onset up 91-day age were smaller those aggregate. Young’s modulus approximately 1.1 times reduced autogenous shrinkage only in case portland cement. mo...

The influence of cement fineness on early-age properties of cement-based materials is investigated using a variety of experimental techniques. Properties that are critical to the earlyage performance of these materials are tested, including heat release, temperature rise, chemical shrinkage and autogenous deformation. Measurements of these properties for two cements of widely different fineness...

The purpose of the present research is to assess impact foundry sand (FS) and cement kiln dust (CKD) on autogenous shrinkage, drying total shrinkage engineered cementitious composites (ECCs) over 100 d. Additionally, pore sizes their distribution in developed ECC system were assessed through BJH adsorption technique. findings showed that structure was refined continuously time. This indicates C...

In this paper, fresh (setting and rheology) hardened properties (strength shrinkage) of one-part alkali-activated slag (AAS) with without rice straw ash (RSA) are comprehensively investigated. The reaction kinetics microstructure the mixtures characterized by a series experimental techniques. results reveal that RSA plays dual roles in AAS, as precursor (though not fully reactive) an internal c...

Here, the intrinsic driving mechanisms of autogenous shrinkage for Ultra-High Performance Concrete (UHPC) incorporating porous internal curing (IC) medium are detailly investigated, including characterization and monitoring UHPC hydration kinetics, relative humidity (IRH) temperature (IT) fields. The results show that evolution prepared with pre-wet fine aggregate (PFA) undergoes multiple stage...

Internal curing by superabsorbent polymer (SAP) has been applied in alkali-activated slag (AAS) systems a few previous studies with the purpose to mitigate autogenous shrinkage. However, effects of SAP on other properties AAS have rarely studied. In this paper, workability, strength, permeability, and frost resistance mortar synthesized are investigated besides Two introducing ways (dry mixing ...