TY  - CONF
KW  - Binders; Compressive strength; Fly ash; Geopolymers; Inorganic polymers; Offshore oil well production; Silicates; Sodium hydroxide
KW  -  Alkaline solutions; Geopolymer mortars; Geopolymerization; High-calcium fly ash; Homogeneous microstructure; Mixing ratios; Optimum concentration; Sodium silicate
KW  -  Microstructure
TI  - Effects of alkaline solution on the microstructure of HCFA geopolymers
ID  - scholars7547
SP  - 501
N1  - cited By 10; Conference of 3rd International Conference on Civil, offshore and Environmental Engineering, ICCOEE 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:180169
N2  - The synthesis of geopolymer mortars based on high calcium fly ash (HCFA) has been studied in order to assess the effects of the alkaline solution on the geopolymerization products and microstructure by means of SEM/EDS and compressive strength tests. The results showed that HCFA geopolymers can develop high strength binders with a dense homogeneous microstructure. The higher sodium silicate to sodium hydroxide (NS/NH) ratio in the range of 1â??2.5 has increased the density and homogeneity of the microstructure. Similar behavior was observed for the effect of NH concentration with an optimum concentration of 10M. The microstructure of HCFA geopolymers can be described as porous with nanoporosity size and considerable amounts of unreacted fly ash particles depending on the study parameters. The formation of Câ??Sâ??H crystals was not detectable. The Si/Al ratios of the produced gels were in the range 1.12-5.55 which was different than the initial mixing ratios. © 2016 Taylor & Francis Group, London.
AV  - none
EP  - 506
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85009809754&doi=10.1201%2fb21942-102&partnerID=40&md5=0078383828955f49918802edd96bb8c1
A1  - Nuruddin, M.F.
A1  - Malkawi, A.B.
A1  - Fauzi, A.
A1  - Mohammed, B.S.
A1  - Al-Mattarneh, H.M.
SN  - 9781138029781
PB  - CRC Press/Balkema
Y1  - 2016///
ER  -