scholarly journals Strength Characteristics of Preformed Foam Concrete

2019 ◽  
Vol 8 (4) ◽  
pp. 8213-8216 ◽  
Keyword(s):  
Experimental Investigation ◽  
Coarse Aggregate ◽  
Strength Test ◽  
Strength Characteristics ◽  
Strength Parameter ◽  
Light Weight ◽  
Foam Concrete ◽  
Strength Parameters ◽  
Light Weight Concrete ◽  
Parameter Test

The study deals with the usage of perforated foam of various percentages to that of coarse aggregate to produce light weight concrete. With the day to day increase in industries and civilization’s expansion it has become very much necessary to produce structures with proficiently lesser weight. Its usage has become more proficient in construction of building in earthquake prone areas. This experimental investigation deals with the study of strength parameters of light weight concrete by performing various strength test and its various behavior s such as compression, tensile and flexure are studied by adding preformed foam at various proportions of 0%, 2%, 5%, 10%, 20% and 40%. All these strength parameter test are performed on 7th day, 14th day and 28th day respectively from day of casting

scholarly journals Strength Behavior of Pumice Stone Lightweight Concrete Beam in Contrast with Reinforced Concrete Beam

2019 ◽  
Vol 8 (3) ◽  
pp. 297-300
Keyword(s):  
Concrete Beam ◽  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Reinforced Concrete Beam ◽  
Unit Weight ◽  
Light Weight ◽  
Pumice Stone ◽  
Light Weight Concrete ◽  
Foamed Concrete ◽  
Light Weight Aggregate

The density of concrete less than that of nominal concrete achieved by any means is referred as Light weight concrete. Circulated air through Concrete, Light Weight Aggregate Concrete, Foamed Concrete are different types of Light weight concrete. In this research study, the density of the concrete has been reduced by replacing the coarse aggregate by the pumice stone as light weight coarse aggregate. The major advantage of this study is to reduce the risk of seismic damages of the structure by reducing the self weight of the structure. The decrease in dead load of structure because of the utilization of LWC additionally brings about reduction in the cross segment of other auxiliary individuals such as beam, column and foundation. The pumice stones have huge number of voids and have moderately higher warm protection than the ostensible aggregates. The objective of this research is to obtain light weight concrete having low unit weight and an optimum compressive strength. The Nominal concrete and the light weight concrete is prepared and the tests were led to decide the mechanical properties and compressive quality, its flexural capacity in beams

scholarly journals Experimental Study on Lightweight Concrete with Styrofoam as a Replacement for Coarse Aggregate

10.29007/fdhp ◽  
2018 ◽  
Author(s):  
Divya Patel ◽  
Uresh Kachhadia ◽  
Mehul Shah ◽  
Rahul Shah
Keyword(s):  
Experimental Study ◽  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Tall Buildings ◽  
Building Construction ◽  
Light Weight ◽  
Foam Concrete ◽  
Conventional Concrete ◽  
Coarse Aggregates ◽  
Heavy Loads

With the rapid growth in building construction and urbanisation, buildings are getting taller and bigger than ever. In India majority of structures are constructed with the help of concrete resulting into very heavy structures. Heavy loads are one of the limitations for construction of tall buildings. If somehow structures are made lighter, cost of the foundation can also be lowered down. Conventional concrete is one of the main reason in increasing the weight of the buildings. Light weight concrete can be very much effective in reducing the overall weight of the building. In conventional concrete, larger volume comprises of coarse aggregates. In this study, attempt has been made to replace conventional coarse aggregates with Styrofoam which is a very light weight foam. Concrete with different aggregate replacement percentage was tested. The results show very encouraging results for the compressive strength and density.

scholarly journals Application of Light Expanded Clay Aggregate as Replacement of Coarse Aggregate in Concrete Pavement

2018 ◽  
Vol 7 (4.2) ◽  
pp. 1
Author(s):  
Pavithra A ◽  
Jerosia De Rose D
Keyword(s):  
Coarse Aggregate ◽  
Mineral Admixture ◽  
Maintenance Cost ◽  
Light Weight ◽  
Conventional Concrete ◽  
Coarse Aggregates ◽  
Light Weight Concrete ◽  
Clay Aggregates ◽  
Light Weight Aggregate ◽  
Effect Of Light

The main aim of this project is to develop a light weight concrete (LWC) by replacing the coarse aggregate with light weight expanded clay aggregate. The damage caused in LWC is less significant than conventional concrete and therefore the maintenance cost is also reduced. In order to understand the effect of light weight aggregate in concrete, conventional concrete of strength 30MPa was designed with the density of 2400 kg/m3. Then the natural coarse aggregates were replaced by clay aggregates and light weight concrete mix of density 1800 kg/m3 was designed to meet the desired strength requirement. As the density of the concrete tends to be lowered, the strength of the concrete may also tend to decrease. Hence suitable chemical and mineral admixture is to be incorporated in addition to significant water reduction to meet the strength requirement. Cement content kept constant in both the cases. The details of mechanical properties and durability properties of conventional and light weight concrete are reported in this paper. 

Using Robust Design Methods for the Fir-Tree Optimization Problem

2018 ◽  
Author(s):  
Boris Vasilyev ◽  
Anton Salnikov ◽  
Artem Semenov
Keyword(s):  
Optimization Problem ◽  
Complex Stress ◽  
Complex Stress State ◽  
Strength Characteristics ◽  
Strength Parameter ◽  
Strength Parameters ◽  
High Pressure Turbine ◽  
Tree Optimization ◽  
Low Mass ◽  
The Stability

The difficulty of providing the required strength characteristics of wheel locking joints is due to a complex stress state, the presence of stress concentrators, differences in contacting-part materials’ characteristics, and possible deviations in sizes from nominal values [1]. Providing stable strength characteristics and a low mass are important requirements. This paper suggests an approach to the strength-mass optimization of a disc and fir-tree joint of a high-pressure turbine and considers the scattering of dimensions within tolerances. The main stages of optimization are shown, criteria for evaluating the robustness of the structure are proposed, and recommendations for the practical robust optimization of a real design are given. The results of various optimization approaches and strength-parameter dispersions of various configurations’ locking joints are compared. It is shown that decreasing the number of teeth increases the stability of the strength parameters.

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