High Manpower Research Articles

Automatic Pneumatic Jack

This device the automatic pneumatic jack for light vehicle garages has been developed to later the needs of small and medium automobile garages. In most of the garages the vehicles are lifted by using screw jack. This needs high man power and skilled labors. In order to avoid all such disadvantages, this automatic pneumatic Jack has been designed in such a way that it can be used to lift the vehicle very smoothly without any impact force. The operation is made be simple that even any person can handled, by just pressing the button. The main objective of our project is to perform various machine operations using machine with the help of pneumatic sources. For a developing industry the operation performed and the parts (or) components produced should have it minimum possible production cost, and then only industry runs profitability.

Effect of Flyash in Enhancing the Strength and Durability Characteristics of Foam Concrete

The major negative aspect of conventional concrete is having heavy density of 2400 kg/m3 and the design of buildings especially high rise structures made up of these concrete leads to high cost, high man power and high lifting devices etc. As indicated in the past researches, there are several ways in reducing the dead weight of the members. Foam concrete is one of the types which is gaining attraction in nowadays and the research towards this concrete in improving the strength and durability characteristics has many wide openings in the research point of view. This paper made an attempt to investigate the strength and durability aspects of foam concrete. In order to produce the synthetic foam, the chemical such as toluene diisocyanate and polyol are used in the ratio of 1:1.1. In order to enhance the abovesaid properties, the mineral admixture of 25% of flyash is added in the foam concrete. Based on the experimental findings, it is understood that the foam concrete with flyash can able to achieve 85% of the strength and durability properties.

New Characterization of Setting Times of Alkali Containing Calcium Phosphate Cements by Using an Automatically Working Device According to Gillmore Needle Test

This paper presents equipment for the measurement of initial as well as final setting times of calcium phosphate cements containing alkali to achieve higher solubility. Until now, the selfsetting process of cements also if alkali is integrated has been tested by using the “standard test method for time of setting of hydraulic-cement paste by Gillmore needles” in accordance to ASTM C 266 – 99. This procedure needs high man power and, furthermore, the results have been markedly influenced by individual experiences that are incorporated in the criterion “without appreciable indentation”.