This study deals with the definition of an efficient combination fly ash (FA) lime or cement and both, to improve dredged sediment (DS) properties. At early age, filler nucleation effects FA lead a refinement microstructure in addition macro porosity reduction induced by cement. long term, becomes denser due pozzolanic property FA. macroscale, DS stabilized using show lower shrinkage higher mec...

The market demand for manufactured sand has grown rapidly, and the solution to problem of optimum stone powder content from concrete is imminent. workability, early age shrinkage strain cracking, strength, chloride ion penetration, pore structures with different contents were tested study influence concrete. test results show that addition beneficial in improving working performance But at same...

High Performance Concrete is used to not only minimize the environmental footprint of cement and concrete industry, but also enable design rapid construction taller more slender structures. Despite significant change in property requirements, properties as during structures are mostly still based on 28-day water cured compressive strength, stiffness, long term drying shrinkage creep. The releva...

This interesting study is similar to the study by Bazant and Najjar (1973) [extensively reviewed in Section 5.5 of Bazant (1975)], which apparently escaped the attention of the authors. However, the conclusion in which the authors recommend the effective modulus method, is different. It appears unwarranted and conflicts with more extensive evidence. The authors dismiss the age-adjusted effectiv...

The diagnosis of bronchial carcinoma was confirmed in 8 of 17 patients who presented with the radiographic appearances of a combination of right upper and middle lobar opacification. In 9 patients the cause of the combination of lobar shadows was inflammatory, in 2 destructive. This experience serves to emphasize that the investigation of lobar and segmental shadows,j;n whatever combination, mu...

one of the cultural characteristics of eastern zone at central part of zagros range during 3rd millennium bc and at early bronze age is the extension of the related habitats to yaniq culture (ancient city near abhar) in this region. within field study conducted in 2008 in the plains covering central zagros eastern side that is situated in alvan basin, we managed to identify more than habitats r...

Abstract The performances of expanded clay aggregate and wood ash as internal curing water reservoirs were studied in the mortar phase a hypothetical high performance concrete with low water-to-binder ratio. two materials substituted 15 30% sand volume. Two different binders, Portland cement high-volume fly blended cement, used. compressive strength volume stability mortars sealed air-drying co...