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Partheeban, P.
- Influence of Si/Al Ratio on the Compressive Strength of Metakaolin Based Geopolymers
Abstract Views :171 |
PDF Views:136
Authors
Affiliations
1 Department of Civil Engineering, St. Peter’s University, Avadi, Chennai-600054, Tamil Nadu, IN
2 St. Peter’s College of Engineering and Technology, Avadi, Chennai-600054, Tamil Nadu, IN
1 Department of Civil Engineering, St. Peter’s University, Avadi, Chennai-600054, Tamil Nadu, IN
2 St. Peter’s College of Engineering and Technology, Avadi, Chennai-600054, Tamil Nadu, IN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 1 (2016), Pagination: 87-91Abstract
The environmental impact of production of cement has left the construction industry with little choice but to develop an alternative material.Geopolymer synthesis has promising potential in that direction Alkali activation of alumino silicate raw marterialproduces geopolymer. Flyash is a widely used precursor in geopolymer. Flyash (FA) based geopolymer is porous and hence less durable. Metakaolin (MK) is rich in alumino silicate (Sio 2-52%, Al 2O 3-46%) and has smaller particle size (3.5 μm) and high specific area (20 m2/g) compared to flyash. MK based geopolymers are expected to give higher strength and less porous than FA based geopolymer. This research aims to investigate the use of MK asa precursor in geopolymer synthesis as a replacement for flyash in various percentages to utilize the advantages of MK over flyash. MK based concrete cured at different temperatures and various solid/liquid ratios are tested for compressive strength. Experimental investigation of FA-MK based geopolymer in this research is found to have 11% to 65% less compressive strength compared to FA based geopolymer when replaced by 10% to 40% of MK. Lesser strength is attributed to the Si/Al ratio of the MK precursor.Keywords
Geopolymer Concrete, Metakaolin, Flyash, Compressive Strength, Alkali Activator and Sodium Silicate.Full Text
- Experimental Investigation on Recycled Rubber Filled Concrete
Abstract Views :141 |
PDF Views:94
Authors
Affiliations
1 Department of Civil Engineering, St.Peter’s University, Avadi-600054, Chennai, IN
2 Department of Civil Engineering, St.Peter’s College of Engineering and Technology, Avadi-600054, Chennai, IN
1 Department of Civil Engineering, St.Peter’s University, Avadi-600054, Chennai, IN
2 Department of Civil Engineering, St.Peter’s College of Engineering and Technology, Avadi-600054, Chennai, IN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 1 (2016), Pagination: 170-175Abstract
Disposal of waste rubber tyres has become a major concern in relation to the surrounding environment. This paper mainly focuses on the problems associated with waste tire disposal and the reuse of recycled rubber (RR) as coarse aggregate in new concrete construction. M20 and M40 concrete grades are mixed with recycled rubber which replaces coarse aggregate by the volume of 5, 10 and 15 percentages. Silica Fume (SF) and Plaster of Paris (POP) were replaced with cement content in various proportions such as 5, 10 and 15 percent. The experimental results show that when the percentage of recycled rubber increases the compressive strength of concrete decreases gradually. However silica fume has significant effects on the strength of concrete compared to POP.Keywords
Recycled Rubber, Silica Fume, Plaster of Paris, Compressive Strength, Optimum Percentage.Full Text