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Sachdeva, S. N.
- Effect of Varying Field Conditions on Stripping of Bituminous Roads
Abstract Views :134 |
PDF Views:125
Authors
Affiliations
1 Department of Civil Engineering, NIT Kurukshetra-136119, Haryana, IN
1 Department of Civil Engineering, NIT Kurukshetra-136119, Haryana, IN
Source
International Journal of Earth Sciences and Engineering, Vol 10, No 2 (2017), Pagination: 404-407Abstract
Presence of moisture on road surface can result in loss of bond between aggregate and bitumen mix due to which stripping can take place leading to reduction in pavement life. Most of the studies all over the world conclude that stripping is mainly caused due to the presence of moisture on the pavement. In this paper the results of a laboratory study that considered increased immersion time of bituminous mix in water along with the effect of moving traffic on the road have been presented on aggregate from three different sources using two bitumen grades. It is found that stripping value is affected by source of aggregate and bitumen grade. Also, it is observed that increase in immersion time and application of traffic pressure affects the stripping value. The pH value of water in which aggregates were immersed was also varied. The increase in alkalinity of water was found to increase the stripping of aggregate.Keywords
Stripping, Immersion Time, Bitumen Grade, pH Value, Traffic Pressure.Full Text
- Effect of Varying Subgrade Strength on Cost of a Rigid Pavement
Abstract Views :135 |
PDF Views:124
Authors
Affiliations
1 Civil Engineering Department, National Institute of Technology, Kurukshetra, IN
1 Civil Engineering Department, National Institute of Technology, Kurukshetra, IN
Source
International Journal of Earth Sciences and Engineering, Vol 10, No 2 (2017), Pagination: 432-434Abstract
It is generally believed that increase in subgrade strength leads to decrease in the thickness of a rigid pavement which helps in reducing the cost of pavement. The guidelines of Indian Roads Congress (IRC) for the design of rigid pavements also recommend the use of select soil of minimum CBR 8% in the subgrade for design of cement concrete pavement for roads having traffic greater than 450 CVPD. An attempt has been made in this paper to study the effect of variation in subgrade strength on thickness and cost of a rigid pavement. It is found that the thickness and cost of pavement may not decrease with an increase in the strength of subgrade soil. The provision of using select soil of minimum CBR 8% in the subgrade of the road as recommended by IRC, therefore, needs to be applied carefully.Keywords
CBR, Cost of Pavement, PQC, Rigid Pavement, Subgrade Strength.Full Text