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  Effect of Curing Temperature and Fiber on Metakaolin-based Geopolymer  
Diupload oleh : Januarti Jaya Ekaputri
Pengarang : Januarti Jaya Ekaputri, Subaer Junaedi, and Wijaya
Tahun : 2017
Dipublikasikan di : Proceedia Engineering
Jenis Jurnal : International Conference
Eksternal Link : http://
Bidang Penelitian : Geopolymer concrete
Abstrak : This paper presents mechanical properties of geopolymer mortar with metakaolin as a base material. Cylindrical specimens were prepared with a diameter of 5 cm and 10 cm height. Four compositions of geopolymer paste varied with adding polyvinyl alcohol fiber (PVA) from 0% to 1% by volume of paste. After casting, steam curing method was conducted at 40oC, 60oC and 80oC for 24 hours. A control specimen was cured at room temperature. Some tests were performed for setting time, compressive strength, split-tensile, direct-tensile and porosity. It showed that the strength of fibrous specimens was 67.29 MPa at of 56 days without steam curing. When curing temperature was risen from room temperature 80oC, the strength increased up to 14% at 28 days. Ratio of split to compressive strength was about 10% when 1% fiber was applied. However, an optimum result was shown by specimens containing 0.6% fibers according to direct-tensile test. It is recommended to apply steam curing at 60oC-80oC to increase the tensile strength.
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