05-10-2016, 02:23 PM
1457886621-2ACT.docx (Size: 3.16 MB / Downloads: 10)
INTRODUCTION:
Concrete is the most widely used building material in construction industry. Its a homogeneous mixture of cement, fine aggregate, coarse aggregate and water. The strength of concrete is mainly depends upon the cement content and it is a compressive member. Cement is a finely pulverized material which by itself is not a binderbut develops the binding property as a result of hydration. The binding nature of cement is due to the presence of silica.
GLASS
Glass is an amorphous (non-crystalline) that in essence, a super-cooled liquid and not a solid. Glass can be made with excellent homogeneity in a variety of forms and sizes from small fibers to meter-sizes pieces. Primarily glass is made up of sand, soda ash, limestone and other additives (Iron, Chromium, Alumina, Lead and Cobalt). Glass has been used as aggregates in road construction, building and masonry materials.
OBJECTIVE:
• To evaluate the utility of Glass powder as a partial replacement of cement in concrete.
• To study and compare the performance of conventional concrete and Glass powder concrete and understand the effectiveness of glass powder in strength enhancement.
METHODOLOGY:
• Investigation on Glass.
• Preparation of Glass powder.
• Casting of Glass powder concrete specimen.
• Testing of specimen.
• Comparison of test results
EXPERIMENTAL WORK
The waste glass is collected from various places such as construction sites, industries, etc.,. Then it is crushed and ground to a size fine enough to achieve its pozzolanic behavior. cement is now partially replaced by its weight by glass powder at varying rates such as 5%, 10% and 15%. Various laboratory tests to determine the specific gravity, setting time of normal Portland cement and cement mixed with glass powder at different rates is carried out. With these results, the control mix, utilizing glass powder replaced as cement is to be designed for cube, cylinder and prism. Now, 6 cubes, 4 cylinders -- such as four specimens for each combination – is to be casted for the whole and cured at room temperature. At the end of curing period, each specimen is tested for compressive and tensile strength and the average is recorded.
CONCLUSION :
• Conventional concrete shows a 28days compressive strength as 9 N/mm2.
• 5% replacement of glass powder in cement will increases the compressive strength
by 14.33 N/mm2 in 28 days.
• 10% replacement of glass powder increases the compressive strength by 18.99
N/mm2 in 28days