INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY (IRJET)
E-ISSN: 2395-0056
VOLUME: 06 ISSUE: 09 | SEP 2019
P-ISSN: 2395-0072
WWW.IRJET.NET
AN EXPERMENTAL STUDY ON SELF COMPACTING CONCRETE BY REPLACING BY MARBLE SLUDGE POWDER AND QUARRY ROCK DUST G Chandra Sainatha Reddy1, B Sirisha2 1M.Tech,
Structural Engineering, Sri Sunflower College of Engineering and Technology, Lankapalli, Andhra Pradesh 2Assistant Professor, Sri Sunflower College of Engineering and Technology, Lankapalli, Andhra Pradesh
----------------------------------------------------------------------------***----------------------------------------------------------------------------Abstract: A self-compacting concrete (SCC) is the one that can be placed in the form and can go through obstacles by its own weight and without the need of vibration. It avoids having to repeat the same kind of quality control test on concrete, which consumes both time and labor. Construction and placing becomes faster & easier. It eliminates the need for vibration & reducing the noise pollution. It improves the filling capacity of highly congested structural members. SCC provides better quality especially in the members having reinforcement congestion or decreasing the permeability and improving durability of concrete. The forecast objective of this study is to traverse the feasibility of using SCC by examining its basic properties and durability characteristics i.e. water absorption, shrinkage, and sulfate resistance. However, because it usually requires a larger content of binder and chemical admixtures compared to ordinary concrete, its material cost is generally 20-50% higher, which has been a major encumbrance to a wider implementation of its use. There is growing evidence that incorporating high volumes of mineral admixtures and micro fillers as partial replacement for Portland cement in SCC can make it cost effective. However, the durability of such SCC needs to be proven. This research work consists of: (i) development of a suitable mix for SCC that would satisfy the requirements of the plastic state; (ii) casting of concrete samples and testing them for compressive strength, shrinkage, water absorption, sulfate resistance. Keywords: SCC, PCC I.
INTRODUCTION
Making concrete structures without vibration have been done in the past. For examples, placement of concrete under water is done by the use of termite without vibration. Mass concrete, and shaft concrete can be successfully placed without vibration. But the above examples of concrete are generally of lower strength and difficult to obtain consistent quality. Modern application of self-compacting concrete (SCC) is focused on high performance, better and more reliable and uniform quality. Self-compacting concrete has been described as “the most revolutionary development in concrete construction for several decades”. Originally developed in Japan to offset a growing shortage of skilled labor, it has proved to be beneficial from the following points.
Faster construction Reduction in site manpower Better surface finish
Figure 1: Self-compacting concrete using in slab II.
A. Cement: OPC Grade 43 Ultra Tech bond was utilized for throwing shapes and chambers for every solid blend. The concrete was of uniform shading i.e. dark with a light greenish shade and was free from any hard bumps. Synopsis of the different tests led on bond are as under given underneath in Table 1.
Easier placing
Table 1: Properties of CEMENT
Improved durability Thinner concrete sections
S NO 1
Reduced noise level
2
Greater freedom in design
Safer working environment
© 2019, IRJET
|
Impact Factor value: 7.34
MATERIALS& PROPERTIES
|
Characteristics Normal Consistency Initial Setting time
Values Obtained 33%
Standard values -
48 min
Not be less than 30 minutes
ISO 9001:2008 Certified Journal
|
Page 1245