Kailas Patil - Academia.edu (original) (raw)

Papers by Kailas Patil

International Journal of Pavement Research and Technology, Jan 9, 2024

Lecture Notes in Civil Engineering

Facta universitatis - series: Architecture and Civil Engineering, 2013

This paper deals with improvement of swelling characteristics of clayey soil by adding industrial... more This paper deals with improvement of swelling characteristics of clayey soil by adding industrial waste and RBI Grade 81. The construction of road in clayey soil is challenging due to its more swelling and more shrinkage characteristics. To overcome this problem there are two solutions one is replace the clayey soil by good quality granular material. The second is stabilizing the subgrade clayey soil by using various industrial wastes. Generally pond ash, fly ash and stone dust are use for soil stabilization. The swelling and shrinkage characteristics of clayey soil are considerably improved if it treated with industrial wastes and RBI Grade 81. The RBI Grade 81 is chemical soil stabilizer. The differential free swell index (DFS) test was carried out on different mix of soil, industrial waste and RBI Grade 81. The result shows that the DFS index of untreated soil obtained is 65% reduces to 35% by addition of 20% fly ash and 4% RBI Grade 81. This reduction in DFS index helps to reduc...

Lecture notes in civil engineering, 2023

Lecture notes in civil engineering, Sep 28, 2022

The estimation of load carrying capacity of footing is the most important step in the design of f... more The estimation of load carrying capacity of footing is the most important step in the design of foundation. A number of theoretical approaches, in-situ tests and laboratory model tests are available to find out the bearing capacity of footings. The reliability of any theory can be demonstrated by comparing it with the experimental results. Results from laboratory model tests on rectangular footings resting on sand are presented in this paper. The bearing capacity of sand below a model footing of rectangular shape with variation in size, depth of sand cushion (D sc =900mm) and the effect of permissible settlement are evaluated. A steel tank of size 900mm×1200mm×1000mm is used for conducting model tests. Bearing capacity factor N γ is evaluated and is compared with Terzaghi, Meyerhof, Hansen and Vesic’s values. From the experimental investigations it is found that, as the footing size increases, ultimate bearing capacity and settlement values show an increasing trend and N γ decreases...

Bitumen is an important binder used in flexible pavement construction. About 80% of the produced ... more Bitumen is an important binder used in flexible pavement construction. About 80% of the produced bitumen is used for pavement construction. The quality of the binders can be improved by their modification with polymers and rubber obtained from waste tyre. At the same time, utilization of waste rubber would solve a serious environmental problem. In the present study effects of Crumb Rubber (CR) obtained from waste tyre on physical and strength properties of 60/70 penetration grade bitumen are evaluated. The crumb rubber modified bitumen is prepared in the laboratory, taking CR content 2%, 4%, 6%, 8% and 10% by weight of bitumen. It is found that the physical and strength properties of the binder are improved due to the modification by waste tyre rubber.

This paper deals with use of pond ash and RBI Grade 81 for improvement in CBR values of clayey so... more This paper deals with use of pond ash and RBI Grade 81 for improvement in CBR values of clayey soil and grade-III materials used for base course of flexible pavement. The pond ash is a thermal power plant waste and RBI Grade 81 is chemical soil stabilizer. The geotechnical properties like Maximum Dry Density (MDD), Optimum Moisture Content (OMC), Unconfined Compressive Strength (UCS), CBR value and Differential Free Swell (DFS) index of soil are tested in the laboratory for different mixes of soil, pond ash and RBI Grade 81 for different proportions. The mixes of grade-III material, pond ash and RBI Grade 81 tested for CBR test. From the study it is found that the geotechnical properties of clayey soil are improved significantly, if pond ash added with RBI Grade 81. The optimum mix recommended for subgrade is soil: pond ash: RBI Grade 81 in proportions of 76:20:4. The CBR value of grade-III base course treated with 20% pond ash and 4% RBI Grade 81 is increased by 125.93% as compared...

Journal of Architectural Engineering, 2021

Facta universitatis - series: Architecture and Civil Engineering, 2014

Polymer modified bitumen is emerging as one of the important construction materials for flexible ... more Polymer modified bitumen is emerging as one of the important construction materials for flexible pavements. The addition of polymers in bitumen improves the deformational stability and durability of bitumen. Also Montmorillonite nanoclay has been successfully used as additive in polymer to significantly improve the thermal stability and mechanical properties. The present study, the effect of waste low density polyethylene (LDPE), polypropylene (PP) obtained from waste carry bag, crumb rubber obtained from Waste tyre (CR)and nanoclay (MMT) on Marshall stability have been evaluated. Waste plastics, whose disposal is a matter of concern can be used successfully to modify the bitumen, these waste polymers are added in 2%, 4% and 6% whereas nanoclay is added in 1,2 and 3 % in 60/70 penetration grade bitumen and its effect on stability and flow of bitumen are evaluated. The result of experimental study shows that there is significant improvement in the Marshall Stability of bitumen due ad...

Polymer-modified bitumen is used to combat different pavement distresses and to increase the life... more Polymer-modified bitumen is used to combat different pavement distresses and to increase the life span of pavement. Unmodified bitumen cannot perform better with the range extreme minimum and maximum pavement temperatures. The polymers commonly used to modify the bitumen are ethylene vinyl acetate (EVA) styrene butadiene styrene (SBS). The aim this study to compare the performance of EVA modified bitumen with the bitumen modified by waste low density polyethylene (LDPE), polypropylene (PP) obtained from waste carry bags and waste tyre rubber (CR) to encourage the use of waste polymer whose disposal is big problem today, in place of costly virgin polymer. From the experimental study, it was found that waste polymers are also effective in improving the properties bitumen as that of virgin polymer.

Learning and Analytics in Intelligent Systems, 2019

Water is one of the most dynamic and important resources of the world. Hence, it needs special at... more Water is one of the most dynamic and important resources of the world. Hence, it needs special attention towards its conservation. Fresh water is mainly obtained either from surface source or as a ground water. Artificial recharge is the most appropriate practice, which traps the unused surface runoff which leads to increase the groundwater recharge. The present study aims to identify artificial recharge zones. Formation of different thematic layers such as soil, slope, land use, drainage and geomorphology were carried out by using Remote Sensing (RS) and Geographical Information System (GIS). These maps were combined in GIS tool to categorise artificial recharge zones. The knowledge-based weightage was assigned. These thematic maps were used for weighted overlay analysis and the final map was prepared showing artificial recharge zones which are categorised as good, moderate and poor. The information regarding groundwater recharge zones is useful for locating water harvesting struct...

The crust thickness of road depends on strength of subgrade soil and traffic intensity. The cost ... more The crust thickness of road depends on strength of subgrade soil and traffic intensity. The cost of construction of road depends on the crust thickness and available material. The cost of construction of road increases, if good quality materials are not available in nearby areas of road construction sites. This problem can be solved by improving the geotechnical properties of subgrade soil. This paper deals with the improvement in properties of subgrade soil like Maximum Dry Density (MDD), Optimum Moisture Content (OMC) and California Bearing Ratio (CBR) value be addition of additives. The pond ash is a thermal power plant waste and RBI Grade 81 is a chemical soil stabilizer used to improve the geotechnical properties of subgrade soil. The geotechnical properties of subgrade soil are improved significantly due to addition of pond ash and RBI Grade 81 together. The soaked CBR value of subgrade soil is 2.56%. The soaked CBR value of mix i.e. soil: pond ash: RBI Grade 81 in the proport...

Petroleum bitumen is the main binding material used in flexible pavement construction. About 80% ... more Petroleum bitumen is the main binding material used in flexible pavement construction. About 80% of the produced bitumen is used for pavement construction. The addition of polymer in bitumen improves pavement durability and lower life cycle costs. In the present experimental study, properties of waste tyre crumb rubber (CR) and ethylene vinyl acetate (EVA) modified bitumen is evaluated. The waste tyre of cars is crumbed and used as an additive in bitumen; the waste tyre polymers and EVA are added in various percentages, like 2%, 4%, 6%, 8% and 10% by weight in 60/70 penetration grade bitumen, and its effect on different properties of bitumen is evaluated.

Soil is considered by the engineer as a complex material produced by weathering of the solid rock... more Soil is considered by the engineer as a complex material produced by weathering of the solid rock. Soil is the most important material which is in use for construction of civil engineering structures. Amongst all parameters, the bearing capacity of soil to support the load coming over its unit area is very Important. There are various methods for calculation of bearing capacity of soil put forth by scientists like Prandtl, Terzaghi, Meyerhoff, Hansen, Vesic and others. Principal factors that Influence ultimate bearing capacities are type of soil, width of foundation, soil weight in shear zone and surcharge. Structural rigidity and the contact stress distribution do not greatly influence bearing capacity. Bearing capacity analysis assumes a uniform contact pressure between the foundation and underlying soil. With other factors unchanged the type of failure of soil, depth of foundation, and effect of water table also governs the bearing capacity of soil. The present paper deals with t...

International Journal of Environmental Engineering, 2016

The life of flexible pavement depends on properties of the subgrade soil and traffic volume densi... more The life of flexible pavement depends on properties of the subgrade soil and traffic volume density. Clayey soils are considered to be problematic due to its swelling and shrinkage characteristics. To overcome this problem it is necessary to stabilise the clayey soil. The present study deals with stabilisation of subgrade soil by using stone dust and RBI Grade 81 as additives. The RBI Grade 81 is a soil stabiliser. The mixes of soil: stone dust: RBI Grade 81 in different proportions was tested in the laboratory for determination of maximum dry density (MDD), optimum moisture content (OMC), California bearing ratio (CBR) value, unconfined compressive strength (UCS) and differential free swell (DFS) index. The geotechnical properties of clayey soil are improved due to addition of stone dust and RBI Grade 81. The mix of soil: stone dust: RBI Grade 81 for proportion of 76:20:04 shows satisfactory improvement in the geotechnical properties.

IARJSET, 2017

Rainfall, runoffs are the most important hydrological variables used in the most of the water res... more Rainfall, runoffs are the most important hydrological variables used in the most of the water resources applications. The information pertaining to occurrence of runoff further helps in water management practices. Runoff is normally generated on limited areas i.e. impervious or less impervious areas, saturated areas etc. Whereas neighboring vegetated areas do not generate any direct runoff. This needs to be taken into account of rainfall-runoff modeling and thus in the delineation of the areas. The input parameters which influence runoff component vary spatially at micro levels. A runoff model has been developed on the basis of SCS-CN method in the present study for predicting runoff.