Steel embedded in cement mortar in the uniaxial compressive stress direction was found to decrease by 80% the compressive longitudinal strain at a given stress and increase by 300% the tensile transverse strain at a given longitudinal strain. The former effect is due to longitudinal confinement of mortar by steel. The latter is due to debonding at the steel-mortar interface. © 1999 Elsevier Sci...

This study presents the effect of super absorbent polymer (SAP) as internal curing agent on workability, durability and compressive strength self-consolidating concrete (SCC). In order to estimate efficiency SAP in different conditions ages, electrical resistivity tests have been performed. Homogenous denser microstructure was formed by gradual release water from into pores created SAP. Further...

Abstract The construction material from anhydrite-II phosphogypsum is dense in structure and has good water resistance. But its disadvantages are low hydration activity long setting time. In this work, modified by adding a composite activator, which made of sulfuric acid steel slag, β-hemihydrate gypsum calcium aluminate cement. With this, the rate clearly increased time shortened. performance ...

It is well established that Self-Compacting Concrete (SCC) contains large amounts of fines including mineral admixtures, such as fly ash and slag, in order to avoid segregation increase cohesion. The use these materials concrete reduces CO2 emissions contributes towards sustainable construction. To overcome the negative effect slag on strength development was ground three finenesses. Therefore,...