International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 04 | Apr -2017
p-ISSN: 2395-0072
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Enhancement in Subgrade soil strength using Glass Powder as discrete fiber: A Review Ujjwal Mishra M.tech (Transportation civil engineering) Lovely Professional University Phagwara, Punjab-144411,India
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract— To construct a better and smooth riding highway the major and our first priority goes for the enhancement of the subgrade strength of soil which we are going to use particularily in the road construction and many of the authorities which are working for this purpose are being involve in the process of finding such discrete fibers which are going affect various soil properties like- California bearing ratio (CBR) and shear strength. The discrete fiber which we are going to use in our studies is the glass powder as there are very few studies has been taken place in this field and it is not unique but a useful discrete fiber with the help of which we can bring changes in the strength of soil subgrade easily , if it is being mixed with the soil in the right proportions and to check the CBR values and Atterberg limits we can use the various tests like CBR test and Atterberg limit tests which will represent the fact that using of this discrete fiber will lead in increasing shear strength and it’s particular California bearing ratio (CBR) value. Keywords— Glass powder, CBR value, Properties,Atterberg limit test ,Discrete fibers, Soil subgrade strength,CBR test,clayey soil etc.
Introduction In now a days it is being very much common to use waste materials and different kind of fibers in the strengthening of soil and soil stabilization, Because the dumping or deposition problem of these materials are being very much difficult in these days there are many kind of waste exists like-plastics, rice husk ash, fly ash and molasses etc but our main motive is to use the glass powder as a discrete fiber because in spite of being very useful it is not going to be very much used in the field of soil engineering. So the main purpose of this paper is to discuss various properties of glass powder which can be useful in the stabilization and soil strengthening of soil if mixed with soil in a different proportions and what will be the effect on the CBR value and various Atterberg limits due to this discrete fiber. The soil selection process will be based on the variation of their Atterberg limits and the soil which we are going to take for our research is classified as CH and CL according to system of Unified Classification System and we are just going to mix the glass powder in that soil with different proportions like in the percentages of 0.1%,0.3% and 0.5% etc to extract the better result and to finalize the one best value with the help of which we are going to attain the desired subgrade strength of soil which is going to be reliable and appropriate in effective way.
Properties of glass powder To improve the engineering properties of soil we are going for mixing of broken glass powder in the soil as we know that it has the various properties like it is a totally non-biodegradable material and it is also a totally inert material and can be useful to enhance the various road building elements strength and it also can not get degraded in a very simple manner it has it’s degradation phenomenon which is very much similar to the degradation of natural rocks. It is a non-crystalline material which is also amorphous, and it is also very much hard & brittle and transparent as well. The glass which are generally used and are familiar to everyone are windows and drinking vessels ,and the glass material which is available readily is soda-lime glass having 75% of CaO, silica and Nitrogen oxides as well.
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