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Thesis

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2016 - 20172
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Subject: Civil Engineering × End date: 2017 × Type: Thesis × Thesis Type: M.Tech ×
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    ThesisItemOpen Access
    Characteristics of no sand pervious concrete containing plasticizer
    (Punjab Agricultural University, Ludhiana, 2017) Karan Pratap Singh; Jaspal Singh
    High strength concrete plays an important role in development of urbanization. Due to impermeable concrete pavements, water cannot percolate to the ground water table. Hence, in this study we emphasized on pervious concrete pavements as an alternate to the situation. In present study, no sand pervious concrete was casted using plasticizer with aggregates of different sizes ranging from 4.75mm to20mm.Compressive strength, density, permeability, workability, void ratio and porosity of mixes were study and analyzed on 14, 28 and 56 days of curing. Workability of most of the mixes ranges from low to medium. Compressive strength of all the mixes ranges from 5.41 N mm-2 to19.92 N mm-2. Void ratio of all the mixes was very high ranges from 0.089 to 0.380. Porosity of all the mixes comes out to be very high as void ratio is high, ranges from 8.9% to27.5%. Density of pervious concrete is low as compared to normal concrete due to high porosity. The average density of all mixes is calculated as 2064.92 kg/m3. The density of all mixes is in the range 1917.04 to 2133.33 kg/m3. Concrete with high permeability can be made as permeability of all the mixes ranges between 0.31to 15.76 m/hr. Mix with aggregate proportion of 33.3% each and plasticizer at 0.5% is one of the good mix with good permeability and adequate strength. Therefore, pervious concrete can be applied to both pavements and footpaths where less strength of concrete is required.
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    ThesisItemOpen Access
    Study on the performance of concrete using waste glass and sugarcane bagasse ash
    (Punjab Agricultural University, Ludhiana, 2016) Gurjit Singh; Jaspal Singh
    During cement production, emission of CO2 has significant impact on environment. Apart from this, extraction of natural aggregates and generation of industrial, agricultural and domestic waste also leads to environment degradation. The use of these waste materials not only helps to reduce the use of natural resources also helps to mitigate the environment pollution. The basic objective of this research is to investigate the effect of Waste Glass (WG) as partial replacement of fine aggregates and Sugarcane Bagasse Ash (SCBA) as partial replacement of cement in concrete. This study primarily deals with the characteristics of concrete, including compressive strength, workability and thermal stability of all concrete mixes at elevated temperature. Twenty five mixes of concrete were prepared at different replacement levels of WG (0%, 10%, 20%, 30% & 40%) with fine aggregates and SCBA (0%, 5%, 10%, 15% & 20%) with cement.The water/cement ratio in all the mixes was kept at 0.55. The workability of concrete was tested immediately after preparing the concrete whereas the compressive strength of concrete was tested after 14, 28 and 60 days of curing. Based on the test results, a combination of 10% WG and 10% SCBA is the most significant for high strength and economical concrete. This research also indicates that the contribution of WG and SCBA doesn’t change the thermal properties of concrete.