The effect of sodium hydroxide (SH) concentration and silicate (SS) content in alkali activator on mechanical properties wet-dry resistance fly ash added pumice based geopolymer paste were investigated. In the study, SH was used as 8, 10, 12 14 molar, while weight ratio SS to 0, 1, 2 3. While density samples increased significantly with increase molarity mixtures low content, it less affected b...

the properties of alkaline sulfite anthraquinone (as/aq) pulp from old corrugated container (occ)was studied. in each trial 100 grams (based on dry weigth) of occ and 18% active alkali was used.three levels of anthraquinone (0.0.1 and 0.2% based on dry weigth of the occ) and two pulpingtimes (120 and 150 minutes at maximum pulping temperature) were applied. pulping temperature,na2so3/naoh ratio...

Abstract Geopolymer (GP) has recently emerged as a novel and environmental friendly alternative to conventional soil stabilization products like lime Ordinary Portland Cement (OPC), which adversely affect the environment. This article emphasizes GPs produced from high calcium class C fly ash (CFA) an alkali activator comprising sodium hydroxide silicate solution for sand stabilization. The expe...

The effect of different sintering parameters on the mechanical properties sintered kaolin-GGBS will influence variation geopolymer. Based previous research, samples have major cracking and many large pores due to temperature holding time during process. first objective is study geopolymer second correlate strength with microstructural analysis. In a solid-to-liquid 2:1 ratio, kaolin GGBS were c...

INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......... 582 ALKALI-CATION SELECTIVITY IN NONLIVING SySTEMS..... . . . . . . . . . . . . . . .. 583 ALKALI-CATION SELECTIVITY IN BIOLOGICAL SYSTEMS. . . . . . . . . . . . . . . . . . .. 587 THE ORIGIN OF ALKALI-CATION EQUILIBRIUM SELECTIVITY .. .. . .. . .... . " 589 ANION SELECTIVITY. . . • . . . . . ....

Ground granulated blast furnace slag (ggbs), can reduce the alkali load in concrete, despite its relatively high alkali content. Most research has been devoted to the efficacy of slag with an alkali content of less than 1.0% and this is reflected in guidance documents. A comparative assessment was made of the effect, if any, of the alkali level of ggbs on potential alkali-silica reactivity. Exp...