Feasibility Of Porous Pavement: A Case Study At Khokhra Circle Area Of Ahmedbad City o4w47

IJSTE - International Journal of Science Technology & Engineering | Volume 2 | Issue 12 | June 2016 ISSN (online): 2349-784X

Feasibility of Porous Pavement: A Case Study at Khokhra Circle Area of Ahmedabad City Jaimin Solanki PG Student Department of Civil Engineering Hashmukh Goswami College of Engineering, Ahmedabad

Abstract This study represents the experimental work related to porous pavement feasibility at Khokhra circle. Nowadays porous pavement is a new concept introduced worldwide. In India and other countries research is going in positive direction. There are many advantages of porous pavement. Porous pavements allow storm water runoff to filter through surface voids into an underlying stone reservoir where it is temporarily stored and/or infiltrated. For this study khokhra area of Ahmedabad city has been selected with the specific road network from the Laxminarayan society to Khokhra circle, Madrasi mandir to Anupam cinema and Haripur housing to Hatkeshwar circle. The above road network has the history of the accumulation of water in the area during the monsoon season for long duration. To study the above objective, the rainfall data for the area during the different day, month is collected. The volume data is the other important aspect for identifying the low volume road. The quality of soil sub grade is the other data, which is collected for determining the thickness of porous asphalt concrete at this road network. The soil quality is also useful in order to identify suitability of disposal of the seepage ground water nearby to the stream/artificial drainage link. Keywords: Porous pavement, soil sub grade, Rainfall data, soil quality, surface voids, Stone reservoir, Infiltration, low volume road, porous asphalt concrete ________________________________________________________________________________________________________ I.

INTRODUCTION

A porous asphalt pavement differs from traditional asphalt pavement designs in that the structure permits fluids to freely through it, reducing or controlling the amount of run-off from the surrounding area. By allowing precipitation and run-off to flow through the structure, this pavement type functions as an additional storm water management technique. The overall benefits of porous asphalt pavements may include both environmental and safety benefits including improved storm water management, improved skid resistance, reduction of spray to drivers and pedestrians, as well as a potential for noise reduction. Under increased urbanization, engineers tried to introduce innovative methods to reduce peak flow rates and minimize pollutants in surface runoff generated by rainfall. New initiatives explored include rain gardens, pervious pavements, infiltration trenches, wetlands, infiltration basins as a component of water sensitive urban design. Pervious pavements will help protect natural systems, integrate storm water treatment into the landscape, reduce runoff volume and peak flow rates and add to sustainability of footpaths while minimizing development costs. Porous pavement used in place of traditional impervious paving materials decreases the total amount of runoff leaving a site, promotes infiltration of runoff into the ground, reduces the amount of pollutants carried to a storm drain or waterway, and aids with reducing peak runoff velocity and volume. Applying permeable pavements as an alternative to traditional drainage systems should be extended, especially in dry regions in order to recharging groundwater. Under these conditions, capturing more rainfall and minimizing evaporation is the main purpose. II. POROUS PAVEMENT A highway pavement is a structure consisting of superimposed layers of processed materials above the natural soil sub-grade, whose primary function is to distribute the applied vehicle loads to the sub-grade. It is designed to the wheel loads imposed on it from traffic moving over it. Additional stresses are also imposed by changes in the environment. It should be strong enough to resist the stresses imposed on it and it should be thick enough to distribute the external loads on the earthen sub grade, so that the sub grade itself can safely bear it. III. DATA COLLECTION AND ANALYSIS Infrastructure development in major cities of the country is getting covered with high buildings and road pavements. Traditional pavements cannot absorb the water through the pavement surface during the rainy season, which leads to problems like surface runoff and water logging on the site. Because of this the feasibility of porous pavement is carried out in internal area of Hatkeshwar. For porous pavement application in this area the following data are collected which consists of (1) rainfall data of the area, (2) traffic volume on the road link, and (3) soil quality of the road segment.

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Feasibility of Porous Pavement: A Case Study at Khokhra Circle Area of Ahmedabad City (IJSTE/ Volume 2 / Issue 12 / 006)

IV. STUDY AREA Ahmedabad city is the major city of Gujarat, which attracts people from the different place of Gujarat for different activities. This leads to very high traffic to and from Ahmedabad. Khokhra area of the Ahmedabad is one of the prime locations.

Fig. 1: Study area hatkeshwar area. Source: Google Map Rainfall Data The total rainfall data of the Ahmedabad city of west zone, new west zone, south zone, central zone, north zone and east zone is collected from the Ahmedabad municipal corporation office. Khokhra area is situated in the east zone of Ahmedabad city. There are three places Odhav, Nikol and Chakudia at which the rain gauges are provided to record the daily rainfall of east zone. The daily rainfall of Khokhra area is recorded at chakudia. Day to day Rainfall data is collected from the Ahmedabad municipal corporation office from the year 2005 to year 2015. Table – 1 Zone wise Rainfall data

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Feasibility of Porous Pavement: A Case Study at Khokhra Circle Area of Ahmedabad City (IJSTE/ Volume 2 / Issue 12 / 006)

Fig. 2: Graphical representation of rainfall data

Traffic Volume Survey: The traffic volume count survey was carried out for the purpose of identifying the area having low traffic volume. The traffic survey is conducted in the internal street road of the Hatkeshwar area in front of karnavati society. Traffic volume details in PCU/hr are tabulated as below: Table – 2 Traffic volume detail

Soil Sample and CBR For this study the soil sample is collected from the under construction road site at Khokhra area. After the collection of soil sample, the California bearing ratio test is carried out to design the different layer of pavement for the conventional pavement.

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Feasibility of Porous Pavement: A Case Study at Khokhra Circle Area of Ahmedabad City (IJSTE/ Volume 2 / Issue 12 / 006)

Sr. No

Wt. Of Wet Soil + Mould W1 (Gm)

Wt. Of Mould W2 (Gm)

1 2 3 4 5

4013 4067 4113 4183 4188

1958 1958 1958 1958 1958

Table – 3 Observation of MDD and OMC Volume Of The Wt. Of Wet Soil Mould W3 (Gm) V (Cc) 2082 981.25 2100 981.25 2108 981.25 2108 981.25 2105 981.25

Bulk Density Yb

Moisture Content W%

Dry Density Yd

2.122 2.140 2.148 2.148 2.145

8% 9% 10% 11% 12%

1.965 1.963 1.953 1.935 1.915

Fig. 3: Graph of Dry Density vs. Water Content Table – 4 Load Penetration Test Data INPUT Trail No - 1 Trail No - 2 Penetration(mm) Load (kg) Load (kg) 0.0 0 0 0.5 45.5 46.0 1 84.5 80.2 1.5 129.8 129.0 2 151.2 146.3 2.5 159.8 158.1 3.0 180.1 176.5 4 193.7 190.6 5 222.8 212.3 7.5 225.2 220.3 10 200.8 190.6 12.5 180.2 170.6

Trail No - 3 Load (kg) 0 41.1 77.0 117.0 134.1 142.7 161.9 178.0 206.0 210.7 180.3 145.6

Output: Table – 5 Output of Load Penetration Test for CBR @ 2.5 mm CBR @ 2.5 mm T1 11.6 T2 11.5 11.2 T3 10.4 Table – 6 Output of Load Penetration Test for CBR @ 5.0 mm CBR @ 5.0 mm T1 10.8 T2 10.3 10.4 T3 10.0

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Feasibility of Porous Pavement: A Case Study at Khokhra Circle Area of Ahmedabad City (IJSTE/ Volume 2 / Issue 12 / 006)

Design of Pavement According to CBR Value:

Fig. 4: Cross Section of Pavement

V. CONCLUSION From the rainfall data it is concluded that the study area is most heavily rainfall area. Total average PCU/hr in the internal road of the study area is about 456 PCU/hr which is shows that the area is low traffic volume.so the study area is applicable for the porous pavement study. There are mainly three types of solution like porous concrete, porous asphalt and interlocking concrete paver block for applicability of porous pavement... REFERENCES [1]

[2] [3] [4] [5] [6] [7]

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