HACETTEPE UNIVERSITY

Advances in physical properties of C class fly ash cement systems blended nanographite – Part 2

Research results suggest that the use of nanographite in the CFA-C system and the pure cement system accelerate the setting time and increase the strength gains, hence overweighing any negative effects. The water absorption, apparent volume, apparent density, CH-content, setting-time, fluidity and strength gain are favourable when compared to pure cement and nanographite-blended cement. Part 1 discussed materials and methods, Part 2 focuses on the results and conclusions.

3 Results and discussions

3.1 Water absorption

These mortars are completely immersed in water to evaluate their water-absorption capacity. The average water absorptions of the blended mortars compared to CMs are presented in Figure 3.

It can be suggested that prolonged curing, increasing the age and percentages of nG, can lead to a reduction in permeable voids. This is due to the high action and activation effects of nG. Another result is that the interfacial transition zone in mortars is enhanced due to the high reactivity, as well as to the activation effect of the nG. This result partially...

Related articles:

Issue 2014-12 HACETTEPE UNIVERSITY

Advances in physical properties of C class fly ash cement systems blended nanographite – Part 1

1 Introduction In view of the pozzolanic activity of CFA, researchers substituted it for ordinary Portland cement in mortars, pastes and concretes. This gave rise to the CFA-C system. CFA-C exhibited...

more
Issue 2015-5 HACETTEPE UNIVERSITY

Supernatant nanographite solution for advance­ treatment of C class fly ash cement systems – Part 2

3 Results and discussions 3.1. Absorbance spectra The UV-visible spectra displays an increasing absorbance attributed to the graphitic p-plasmon resonance. For the concentrated suspension, the peak is...

more
Issue 2018-4 ISLAMIC AZAD UNIVERSITY

Experimental study of the effect of water-to-cement ratio on various properties of nano silica concretes with polypropylene fibers

1 Introduction The use of various additives in concrete and cement products has attracted special attention in recent years. So far, many researches have been carried out on fiber concrete, but...

more
Issue 2018-10 UNIVERSITY OF THRACE

Effect of mineralogical substitution raw material mixing ratio on mechanical properties of concrete

1 Introduction Turkey has abundant marble reserves and numerous marble-cutting ateliers and factories. Brick is manufactured at about 520 small and medium-sized factories in Turkey. With a total of 57...

more
Issue 2013-09

The influence of complex additives on the endurance strength of concrete

At present, issues connected with the development of concrete technology, the problem of quality improvement and the durability and profitability of different types of concrete are being addressed...

more