TY  - JOUR
Y1  - 2011///
A1  - Nuruddin, M.F.
A1  - Demie, S.
A1  - Ahmed, M.F.
A1  - Shafiq, N.
EP  - 914
ID  - scholars2227
TI  - Effect of superplasticizer and NaOH molarity on workability, compressive strength and microstructure properties of self-compacting geopolymer concrete
SN  - 2010376X
SP  - 907
KW  - Alkaline solutions; Concrete samples; Filling abilities; Geopolymer concrete; Interfacial transition zone; Low calcium fly ash; Microstructure properties; Molarity; NaOH solutions; Ordinary Portland cement; Passing ability; Self-compacting; Slump flow; Sodium hydroxides; Sodium silicate solutions; Superplasticizers; Test method; Workability
KW  -  Compressive strength; Fly ash; Inorganic polymers; Microstructure; Plasticizers; Silicon compounds; Sodium
KW  -  Mechanical properties
N1  - cited By 14
JF  - World Academy of Science, Engineering and Technology
VL  - 51
N2  - The research investigates the effects of super plasticizer and molarity of sodium hydroxide alkaline solution on the workability, microstructure and compressive strength of self compacting geopolymer concrete (SCGC). SCGC is an improved way of concreting execution that does not require compaction and is made by complete elimination of ordinary Portland cement content. The parameters studied were superplasticizer (SP) dosage and molarity of NaOH solution. SCGC were synthesized from low calcium fly ash, activated by combinations of sodium hydroxide and sodium silicate solutions, and by incorporation of superplasticizer for self compactability. The workability properties such as filling ability, passing ability and resistance to segregation were assessed using slump flow, T-50, V-funnel, L-Box and J-ring test methods. It was found that the essential workability requirements for self compactability according to EFNARC were satisfied. Results showed that the workability and compressive strength improved with the increase in superplasticizer dosage. An increase in strength and a decrease in workability of these concrete samples were observed with the increase in molarity of NaOH solution from 8M to 14M. Improvement of interfacial transition zone (ITZ) and micro structure with the increase of SP and increase of concentration from 8M to 12M were also identified.
AV  - none
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871405679&partnerID=40&md5=a0e316666bb13e6f6dd5aa35dac93785
ER  -