Abstract
The aim of this article – to determine short term and long term strengthening of clay soil, by strengthening it with fly ash obtained during the production of mineral wool. This article introduces research which is used to determine the optimal ratio of fly ash in cement suspension for strengthening of clay soil. Samples which were investigated in this research work prepared by mixing Portland cement, mineral wool fly ash, clay powder, sand and water. All investigated samples compressive strength after 6 months exceeded 1.7 MPa. It is enough of such strength in geotechnics to conduct strengthening of soil and it is possible to argue that soil is strengthened.
Highlights
When the level of economy and consumerism rises, the problem of waste treatment is becoming more and more apparent
The aim of this article – to determine short term and long term strengthening of clay soil, by strengthening it with fly ash obtained during the production of mineral wool
This article introduces research which is used to determine the optimal ratio of fly ash in cement suspension for strengthening of clay soil
Summary
When the level of economy and consumerism rises, the problem of waste treatment is becoming more and more apparent. Depending on type and ratio of FA different short term and long term values of strength are obtained (Essler & Yoshida, 2004; Hemalatha & Ramaswamy, 2017) It is important, that it is possible to strengthen clay soils with FA high in calcium as well (Kolias et al, 2004). It is possible to strengthen soil with FA without cement admixture (Mishra & Rath, 2011; Supancic & Obernberger, 2011) This method solves the problem of FA utilisation, but it is possible to apply it only to low intensity roads. The aim of this article – to determine short term and long term strengthening of clay soil, by strengthening it with fly ash obtained during the production of mineral wool.
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