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Effect of Locust Bean Pod Extract As Water Reducing Admixture On The Compressive Strength Of Concrete.

By
ALFA UMAR
BSc. Civil engineering
Kaaf University College

ABSTRACT
This project present the investigatory result on the use of locust bean pod extract (LBPE) as a replacement for water on the Compressive strength of concrete. The locust bean pod is a waste material that is normally discarded after the seed have been harvested. 60 cubes of blocks of size 150 x 150 x 150mm were produced using locust bean pod extract as a blinder in concentration of 0, 0.15, 1.0, 1.5, 2.0 and 2.5kg/l respectively. The cubes without locust bean pod extract were used as control. The whole cube were cured under atmospheric condition in the laboratory and their compressive were determined. It was found that locust bean pod extract can significantly increase the compressive strength of the concrete block by 78.57% and that the concentration of the locust bean pod extract, the greater the compressive strength of the concrete cubes.

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Control Of Corrosion on Underwater Piles

By
Shubham Sunil Malu

ABSTRACT
Piles are structures used to transfer loads from superstructure to the sub surface strata. When the subsurface stratum is water based or if we deal with a hydraulic structure, the piles are to be driven into water and under water strata. Piles used in underwater structures are often subjected to corrosion. There is no absolute way to eliminate all corrosion; but corrosion protection measures are employed to control the effect of corrosion. Corrosion protection can be in different ways according to the environment and other factors. Forms of corrosion protection include the use of inhibitors, surface treatments, coatings and sealants, cathode protection and anode protection. The control measures explained in this are Protective coatings, cathode treatment and application of Fibre Reinforced Polymer (FRP) Composites.

CHAPTER-1 INTRODUCTION
Corrosion is the destruction of metals and alloys by the chemical reaction with the environment. During corrosion the metals are converted to metallic compounds at the surface and these compounds wears away as corrosion product. Hence corrosion may be regarded as the reverse process of extraction of metals from ore.

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Use of Ancient Titan’s For Development of New Suspension Bridge

By
Shubham Sunil Malu

ABSTRACT
Suspension means to suspend something as system of spring and shock absorbers which supports vehicles on its wheels and make it more comfortable to write. In likely suspended bridge is a bridge which is suspended from cables running between the towers. We have discussed here how the bridge works and the force accounted in the bridge due to various load acting on it like wind, water, moving vehicles.
Here we discus the construction sequence in suspension bridge & have discussed the disaster in Tacoma narrow bridge in detail.

1.0 INTRODUCTION
“Suspension bridge is one where cables or ropes or chains are stung across the obstacle & the deck is suspended from these cables”

Anatomy of a Bridge

Deck –  For pedestrian, train, and / or automobile traffic.
Supports – The towers are the supports.
Span – Describes the distance between towers.
Foundations – The supports rest on the foundations.
Approaches – The approaches are the roads leading up to the bridge.
Long wire cables – are strung over the towers and secured to the anchors on land.
Hangers – run from the cables to the deck hold it up.

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Application of Smart Material in Structural Engineering

By
Anubhab Panigrahi

ABSTRACT
With the development of materials and technology, many new materials find their applications in civil engineering to deal with the deteriorating infrastructure. Smart material is a promising example that deserves a wide focus, from research to application. With two crystal structures called Austenite and Martensite under different temperatures, smart material exhibits two special properties different from ordinary steels. One is shape memory, and the other is super-elasticity. Both of these two properties can suit varied applications in civil engineering, such as prestress bars, self-rehabilitation, and two-way actuators, etc.

One of the main objectives of the research is to investigate the application of smart materials in civil engineering by focusing on the literature review, basic information collection, and basic mechanic properties of smart materials. In axial tension tests, the force- extension curve and stress-strain curve of shape memory and superelasticity materials were measured separately. These curves verify the research of forerunners.

Four beam experiments were conducted to evaluate the performance of flexure beams with superelasticity material as reinforcement bars. Load-displacement relationship at the midspan, strains on the surface of the concrete beam, and cracking width for different loads were measured.

This research is just the first step in the investigation of the application of smart materials in structural engineering. Some bigger beams are prepared for experiments in the near future.
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Partial Replacement of Cement With Marble Powder in Concrete

By
Vijayvenkatesh Chandrasekaran
Final year student, Department of Civil Engineering, St. Josephs college of engineering & technology, Thanjavur, India.

ABSTRACT:
Marble powder is one of the most active research areas that encompass a number of disciplines including civil engineering and construction materials. The marble industry inevitably produces wastes, irrespective of the improvements introduced in manufacturing processes. In the marble industry, about 50 to 60% production waste. These waste create many environmental dust problems in now a day to day society. In requiring a suitable form of management in order to achieve sustainable development. In this paper explained about the behavior of concrete with partial replacement of cement with added percentage values of marble powder and attain required strength. Partial replacement of marble powder in cement accordingly in the range of 20%, 30%, 40%, by weight for M20 grade of concrete. With this experimental research work the problem of waste production management of this agro waste are will be solved. It analyzed the research work the compressive strength, flextural strength, split tensile strength values at 7, 14, 28 day. The test results show that the compressive strength, split-tensile strength and flexural strengths are achieved up to 30% to 40% replacement of cement with marble powder without affecting the characteristic strength of M20(1:1.5:3) grade concrete.

KEYWORDS: Cement (53 grade), Marble powder, Fine aggregate (M-sand), Coarse aggregate (20mm size).

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