Interrelations between cement and concrete properties, part 1 :

Abstract

presents research results, test methods, and performance criteria related to the structural and environmental functions and the durability and safety characteristics of building elements and systems. studies of sulfate expansion, heat of hydration, autoclave expansion, compressive strength after normal and steam curing, shrinkage, absorption, freeze-thaw durability, as well as the effect of outdoor exposure on concrete specimens.

Utilization of Ladle Furnace slag from a steelwork for laboratory scale production of Portland cement

“…The amount of C3S also affects compressive strength: an increase in C3S content increased strength up to 28 days [68]. This was corroborated by Walker and Bloem [69], who found a relationship between C3S content and the 7-day strength of the cement paste.…”

Interrelations between cement and concrete properties, part 3 :

“…The average compressive strength values of the 1 year air-stored specimens, (STlA), (not indicated in this figure ) were about the same as the averages of the 28 day water stored specimens, (ST28). The 1 year moist-airstored specimens (STlM) had average compressive strength values close to those stored in water for « As previously indicated [8], a coef./s.d. ratio greater than one was considered to be of sufficient significance to warrant further investigation.…”

“…The Portland cements used in this study have previously been described [8,9,10]. Briefly, they consisted of 199 commercially manufactured cements of the different types, and were obtained from different areas of the USA, with a few obtained from other countries.…”

“…section in this series of articles [8]. These techniques included plots of the dependent and major independent variables as well as the use of the "tic-tac-toe," and the Students "t" test, of the "hi-lo" and "middle-ends" comparisons to determine which of the minor constituents or trace elements were probable contributing factors to variations.…”

“…Some of the limitations on interpretations of multiple regression equations, as well as other statistical techniques used in this this series of articles, have been discussed in section 1, subsections 4.2, 4.3, and 5. [8].…”