Dr.K S Beenahttps://dyuthi.cusat.ac.in:443/xmlui/handle/purl/43042024-02-07T17:21:44Z2024-02-07T17:21:44ZStudies On Strength Characteristics Of Soil Mixed With Bio-WasteBeena, K SSanthosh, Ghttps://dyuthi.cusat.ac.in:443/xmlui/handle/purl/43102014-07-25T20:30:34Z2013-12-01T00:00:00ZStudies On Strength Characteristics Of Soil Mixed With Bio-Waste
Beena, K S; Santhosh, G
Researches are always in quest for finding innovative methods for ground improvement using sustainable and environmental friendly solutions. Theproduction of large quantity of biowastes all over the world faces serious problems of handling and disposal. Coir pith is a biowaste from coir industry and sugarcane baggase is another biowaste obtained after extractingjuice from sugar cane. So the present study is an investigation into the effect of coir pith and sugarcane baggase on some geotechnical properties of red earth. The investigation includes study on variation of properties such as O.M.C, maximum dry density, C.B.R. values,unconfined compressive strength and permeability when these materials are included in soil. Several conclusions are arrived at, on the basis of the experiments conducted and it may be helpful for predicting the behavior of such soil matrix
Proceedings of Indian Geotechnical Conference
December 22-24,2013, Roorkee
2013-12-01T00:00:00ZInfluence Of Additives On The Drain Down Characteristics Of Stone Matrix Asphalt MixturesBeena, K SBindu, C Shttps://dyuthi.cusat.ac.in:443/xmlui/handle/purl/43092014-07-25T20:30:34Z2014-07-01T00:00:00ZInfluence Of Additives On The Drain Down Characteristics Of Stone Matrix Asphalt Mixtures
Beena, K S; Bindu, C S
In Kerala highways, where traditional dense graded mixtures are used for the surface courses, major distress is due to moisture induced damages. Development of stabilized Stone Matrix Asphalt (SMA) mixtures for improved pavement performance has been the focus of research all over the world for the past few decades. Many successful attempts are made to stabilize SMA mixtures with synthetic fibres and polymers. India, being an agricultural economy produces fairly huge quantity of natural fibres such as coconut, sisal, banana, sugar cane, jute etc.. Now- a -days the disposal of waste plastics is a major concern for an eco- friendly sustainable environment. This paper focuses on the influence of additives like coir, sisal, banana fibres (natural fibres), waste plastics (waste material) and polypropylene (polymer) on the drain down characteristics of SMA mixtures. A preliminary investigation is conducted to characterize the materials used in this study. Drain down sensitivity tests are conducted to study the bleeding phenomena and drain down of SMA mixtures. Based on the drain down characteristics of the various stabilized mixtures it is inferred that the optimum fibre content is 0.3% by weight of mixture for all fibre mixtures irrespective of the type of fibre. For waste plastics and polypropylene stabilized SMA mixtures, the optimum additive contents are respectively 7% and 5% by weight of mixture. Due to the absorptive nature of fibres, fibre stabilizers are found to be more effective in reducing the drain down of the SMA mixture. The drain values for the waste plastics mix is within the required specification range. The coir fibre additive is the best among the fibres investigated. Sisal and banana fibre mixtures showed almost the same characteristics on stabilization.
International Journal of Research in Engineering and Technology Volume: 03 Issue: 07 | Jul-2014
2014-07-01T00:00:00ZEffectiveness of coir geotextiles in soil moisture conservationBeena, K SAnil, K Rhttps://dyuthi.cusat.ac.in:443/xmlui/handle/purl/43072014-07-25T20:30:37Z2011-01-01T00:00:00ZEffectiveness of coir geotextiles in soil moisture conservation
Beena, K S; Anil, K R
Among the diversified use of coir geotextiles, its use as a protective covering to improve crop productivity and
to reduce weed problem assumes to be much significant. An experiment has been conducted at Kumbazha, in
Pathanamthitta district, Kerala, India to evaluate the different types of coir geotextiles and polythene as soil
mulch. The treatments include different mulching materials like natural needled felt, black needled felt,
rubberized coir, black polythene and transparent polythene along with a control plot (no mulch). The experiment
was laid out in Completely Randomized Design with six replications. The test crops used were bhindi (var.
Salkeerthi) and pineapple (var. Mauritius). The study reveals that with bhindi crop growth parameters like plant
height, leaf number and lateral spread were increased by mulching with rubberized coir and transparent
polythene. These two mulches caused early flowering and increased fruit yield. Coir materials as mulch
recorded a yield increase ranging from 67 to 196%. Observations also reveal that weeds were not grown in plots
mulched with black polythene, transparent polythene and rubberized coir. Rubberized coir as mulch enhanced
the fruit yield in the case of pineapple, which is followed by natural needled felt and transparent polythene.
Black polythene resisted weed growth up to 7MAP, whereas rubberized coir and transparent polythene
suppressed weeds up to 8MAP. Though the weeds were grown in other treatments the weeds count was
significantly lower than that of control plot. Mulching with transparent polythene enhanced the soil temperature
whereas rubberized coir lowered soil temperature. More over all mulched treatments had a favourable influence
in increasing soil moisture. Observing the biodegradability and eco-friendly nature of coir it could be inferred
that rubberized coir can serve as good mulch for bhindi and pineapple with minimum weed problem
International Journal of Engineering and Technology Vol.3 (3), 2011, 200-207
2011-01-01T00:00:00ZWaste plastic as a stabilizing additive in Stone Mastic AsphaltBeena, K SBindu, C Shttps://dyuthi.cusat.ac.in:443/xmlui/handle/purl/43062014-07-25T20:30:37Z2010-01-01T00:00:00ZWaste plastic as a stabilizing additive in Stone Mastic Asphalt
Beena, K S; Bindu, C S
The present study investigates the benefits of
stabilizing the stone mastic asphalt (SMA) mixture in
flexible pavement with shredded waste plastic.
Conventional (without plastic) and the stabilized SMA
mixtures were subjected to performance tests including
Marshall Stability, tensile strength and compressive
strength tests. Triaxial tests were also conducted with
varying percentage bitumen by weight of mineral
aggregate (6% to 8%) and by varying percentage plastic
by weight of mix (6% to 12% with an increment of 1%).
Plastic content of 10% by weight of bitumen is
recommended for the improvement of the performance
of Stone Mastic Asphalt mixtures. 10% plastic content
gives an increase in the stability, split tensile strength
and compressive strength of about 64%, 18% and 75%
respectively compared to the conventional SMA mix.
Triaxial test results show a 44% increase in cohesion
and 3% decrease in angle of shearing resistance
showing an increase in the shear strength. The drain
down value decreases with an increase in plastic content
and the value is only 0.09 % at 10% plastic content and
proves to be an effective stabilizing additive in SMA
mixtures
International Journal of Engineering and Technology Vol.2 (6), 2010, 379-387
2010-01-01T00:00:00Z