Physical Characteristics of Grout for Low Density Roads
Journal Title: Saudi Journal of Civil Engineering - Year 2017, Vol 1, Issue 1
Abstract
Abstract:The presented study represents the results of an experimental study handled with developed grouting materials. These experimental studies cover the effects of some mineral Admixtures and chemical admixtures on the characteristics of grout such as compressive strength, bleeding, setting time and viscosity for different curing times. All grout types were prepared under same water/cement ratio. Grout mixtures that 15% of mineral admixtures replaced with cement by weight were prepared. The results showed that grouts produced with silica fume (SF) and metakaolin (MK) in all mixtures were yielded the highest compressive strength at all ages. The all strength tests of fly ash (FA) grout exhibited low values till 28 days of curing time in accordance with reference grout, but a sharp increase was observed after this period. Grouts with perlite (PRL) and blast furnace slag (BFS) showed the similar strength values according to reference grout. Mineral admixtures can be used for high-strength and low cost grout in tunneling applications. In addition, the use of waste materials can contribute to the resolution of environmental problems. Compressive strength obtained by the grout prepared by using styrene butadiene rubber was found 23.644 N/mm2 and 34.793 N/mm2 for 7 and 14 of curing period where compressive strength obtained by the grout prepared by using fly ash was found 20.444 N/mm2 and 31.827 N/mm2 for 7 and 14 days of curing period. Keywords:Grout, Compressive strength, admixtures, cement and mix design
Authors and Affiliations
Poonam Mahajan, Shrikant M. Harle
Keywords
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