This study uses fly ash for non-shrinkage grout in order to develop strength of grout and improve its durability. We grind fly ash to the extent of 7,000 cm2/g and use ground fly ash and raw fly ash respectively at the proportion of 10%, 20%, 30% instead of OPC and compare the results drawn on the condition of each proportion. As a mixed material of grout, EVA and water-reducing agent is added in order to prevent bleeding and improve segregation resistance, CSA is added with a view to preventing drying shrinkage and improving early strength property. In regard to flow and flow time test for analyzing and evaluating workability, it is revealed that grouts of all mix proportions except raw fly ash 30% mix proportion satisfy all performance criteria. With regard to length change rate, grout with no admixture shows the highest shrinkage rate, but the rate is 0.0005%, extremely insignificant rate. As material age increases, compressive strength of two grouts, that is to say ground fly ash 10% and 20%-used grouts, exceed that of grout with no admixture or show high-level compressive strength.
|Number of pages||5|
|Journal||Journal of Ceramic Processing Research|
|Publication status||Published - 2018|
Bibliographical noteFunding Information:
The present study was carried out with the support of research fund from the Land, Infrastructure and Transport Technology Regional Specialization Project (18RDRP-B103390-06), the Korea Ministry of Land, Infrastructure, and Transport. We would like to extend our sincere gratitude for the support.
All Science Journal Classification (ASJC) codes
- Ceramics and Composites