Download Alkali-activated cements and concretes by Krivenko, P. V.; Roy, D. M.; Shi, Caijun PDF

By Krivenko, P. V.; Roy, D. M.; Shi, Caijun

Show description

Read Online or Download Alkali-activated cements and concretes PDF

Best polymers & textiles books

Epoxy Composites : Impact Resistance and Flame Retardancy

A composite is outlined as a mixture of 2 or extra fabrics with a distinguishable interface. The urge to enhance the homes of composite fabrics, has triggered fabrics scientists to enquire composites with reduce and decrease reinforcement dimension, resulting in the improvement of microcomposites and the new pattern in composite examine is nanocomposites (with nanometer scale reinforcements).

Modern Approach to Maintenance in Spinning (Woodhead Publishing India)

Smooth method of upkeep in Spinning is a straightforward and available advisor to the data required to meet the function of a upkeep supervisor in a cloth mill. protecting the entire upkeep administration application, the ebook offers a easy all-round knowing of even the small spare components utilized in the machineries of a spinning mill; it's for that reason additionally helpful for shop-floor technicians.

Fire and Polymers VI: New Advances in Flame Retardant Chemistry and Science

There's consistently the prospect fabric may perhaps capture hearth, very likely resulting in the lack of estate and, sometimes, lifestyles. fireplace probability isn't really a brand new challenge yet, as new polymeric fabrics are built and used, the potential of fireplace threat might raise. There are large advantages to those new polymeric fabrics, together with weight reductions and source (energy, longevity) financial system.

Framework for Chemical Risk Management under REACH

"Efficient and powerful implementation of succeed in keeps to rely on the interplay of Member kingdom regulators in the course of european determination making. this is often the results of prior political debates surrounding the laws being narrowly keen on mechanisms for engaging in probability tests. To facilitate european determination making, this research provides a potential framework for probability administration lower than succeed in.

Extra resources for Alkali-activated cements and concretes

Example text

The replacement of gypsum with Na2 SO4 can activate the potential activity of phosphorus slag and increase the early strength of portland phosphorus slag cement very significantly (Shi et al. 1989b). The latent cementitious properties of granulated phosphorus slag can be very effectively activated using alkalis (RST 5024-83 1983, Shi and Li 1989b). The Na2 SiO3 -activated phosphorus slag mortars exhibit a compressive strength of 80 MPa at 28 days. The other interesting fact is that the presence of soluble phosphates does not affect the setting and strength development of alkali-activated granulated phosphorus slag cements (Shi and Li 1989b).

1989) 0 50 1 16 0 39 USA Hogan and Rose (1986) 0 4 0 48 0 77 0 25 UK Osborne and Singh (1995) furnace slag from several countries in the world. It seems that these slags have very similar SiO2 and CaO contents, but have an obvious difference in Al2 O3 , MgO and TiO2 contents. 1 Slow cooling A slow cooling of slag melts leads to a stable solid, which consists of crystalline Ca–Al–Mg silicates. Melilite – a solid solution of gehlenite C2 AS and akermanite C3 MS2 – is the most common mineral. 2. 3.

12 Ranges of the 29 Si chemical shift of the silicate structural units (based on Hoebbel and Ebert 1988). 0 Percentage of structural units (%) Q0 Q1 2 Qcy−3 Q2 Q3 Q4 1 12 20 7 25 31 0 22 28 33 36 13 53 6 0 7 0 0 10% higher than those in a solution made from anhydrous Na2 SiO3 (Dent Glasser and Lachowski 1980). Concentration of sodium silicate solutions also affects the mean condensation degree of silicate anions. 13), which indicates a decreased mean condensation degree of the anions. 1 M sodium silicate solution.

Download PDF sample

Rated 4.09 of 5 – based on 31 votes