scholarly journals BEHAVIOURAL STUDIES ON TRIPLE BLENDED FOAM CONCRETE

2020 ◽  
Vol 184 ◽  
pp. 01104
Author(s):  
G.V.V. Satyanarayana ◽  
P. Gayathri
Keyword(s):  
Construction Industry ◽  
Coarse Aggregate ◽  
Experimental Studies ◽  
Sound Insulation ◽  
Air Bubbles ◽  
Foam Concrete ◽  
Conventional Concrete ◽  
Foaming Agent ◽  
Architectural Features ◽  
Time Strength

In recent days construction industry focuses on other than conventional concrete in infrastructural purposes like building etc., due to excess usage of cement, sand and other aggregates which leads depreciation of natural resources and effects on the environment. By utilization of lightweight bricks and foam concrete which reduces not only its self-weight but also improve resistance against heat and sound insulation and architectural features. The density of foam concrete varies from 300 to 1800kg/m3. Foam concrete composes of cement, water, fly ash and foaming agent without coarse aggregate. The function of foam is to create air bubbles in the cement-based slurry. The density of foam concrete depends on the quantity of foam added. The foam creates several pores with this effect; it has low thermal conductivity. As density of foam concrete is low at same time strength also low when compared to conventional concrete, so an attempt made to improve mechanical properties of foam concrete by adding admixtures like Silica fume and GGBS in different percentages. In these experimental studies, the workability and compressive strengths are mentioned

Study on Properties of Foam Concrete Based on Fractal Theory

2011 ◽  
Vol 194-196 ◽  
pp. 1916-1919 ◽  
Author(s):  
Wen Ling Tian ◽  
Jiang Bo Yang ◽  
Xiao Yan Zhao
Keyword(s):  
Fractal Dimension ◽  
Fly Ash ◽  
Thermal Insulation ◽  
Fractal Theory ◽  
High Strength ◽  
Sound Insulation ◽  
Foam Concrete ◽  
Insulation Property ◽  
Foaming Agent ◽  
Thermal Insulation Property

Foam concrete is provided with light weight, thermal insulation, sound insulation and fire resistance, good seismic performance and other characteristics. To improve properties of foam concrete microstructure is studied with the help of fractal theory, fractal dimension related to mechanical properties and thermal performance of foam concrete is calculated by MATLAB language program. The results indicate that the microstructure of foam concrete showed significant fractal character, the fractal dimension is between 1.3 and 2.0. Apparent density, 28d compressive strength, and thermal conductivity decreases with the increase of fly ash and foaming agent content, fractal dimension increased. Formulas of fractal dimension and the fly ash, foaming agent content were established. Foam concrete with low density, high strength, and good thermal insulation property will be prepared conducted by the formulas.

scholarly journals Fire resistance of lightweight foam concrete by incorporating lightweight bio-based aggregate

2021 ◽  
Vol 920 (1) ◽  
pp. 012009
Author(s):  
M K Yew ◽  
M C Yew ◽  
J H Beh ◽  
L H Saw ◽  
Y L Lee ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fire Resistance ◽  
Coarse Aggregate ◽  
Positive Outcome ◽  
Strength Properties ◽  
Sound Insulation ◽  
Foam Concrete ◽  
Load Bearing ◽  
Oil Palm Shell ◽  
Lightweight Foam

Abstract Concrete is widely used in the industry due to its effectiveness in terms of cost and strength. In this study, the introduction of bio-based aggregate as coarse aggregate in lightweight foam concrete will be investigated to find a better solution for fire incidents that are commonly happened. As such, lightweight foam concrete (LWFC) has been applied in many buildings especially in non-load bearing wall to enhance thermal conductivity, sound insulation and fire resistance. The aim of this research is to investigate the effect of incorporating bio-based aggregate namely oil palm shell (OPS) into lightweight form concrete in terms of strength properties and fire resistance. Three different concrete mix was designed containing different percentage of OPS aggregate replacement (0, 5, 10 and 15%). From the result, the compressive strength of the LWFC-CTR mixture had achieved the highest compressive strength at 28-day, which is recorded at 3.82 MPa. The fire resistance of LWFC-OPS 15% had showed a positive outcome with improvement by almost 23.5% compared to control mix at 15 minutes. Therefore, the major finding of this research is the incorporation of eco-friendly OPS aggregate has improved the fire resistance of lightweight foam concrete, which can be used as an alternative solution for non-load bearing walls.

scholarly journals Feasible and Experimental Study on Partial Replacement of Fine Aggregate using Construction Debris

2020 ◽  
Vol 13 (2) ◽  
pp. 47-53
Author(s):  
Arivalagan. S ◽  
Dinesh Kumar K S A ◽  
Sudhakar R
Keyword(s):  
Construction Industry ◽  
Coarse Aggregate ◽  
Construction Material ◽  
Construction And Demolition Waste ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Demolition Waste ◽  
River Sand ◽  
Conventional Concrete ◽  
Suitable Alternative

Concrete is the most widely used construction material today. The constituents of concrete are coarse aggregate, fine aggregate, coarse aggregate and water. Concrete plays a major role in the construction industry and a large quantum of concrete is being utilized. River sand, which isone of the constituent used in the production of conventional concrete, has become expensive and also a scarce material. In view of this,the utilization of demolished aggregate which isa waste material has been accepted as building material in many countries for the past three decades. The demand of natural sand in the construction industry has increased a lot resulting in the reduction of sources and an increase in price. Thus an increased need to identify a suitable alternative material from industrial waste in place of river sand, that is eco-friendly and inexpensive construction debris i.e fresh concrete being extensively used as an alternative to the sand in the production of concrete. There is an increase in need to find new alternative materials to replace river sand so that excess river erosion is prevented and high strength concrete is obtained at lower cost. One such material is building construction debris: a by-product obtained during construction and demolition waste. An experimental investigation is carried out on M 25 concrete containing debris during construction in the different range of 20%, 30% & 40% by weight of sand. Material was produced, tested and compared with conventional concrete in terms of workability and strength. These tests were carried out on standard cube of 150×150×150 mm and beam of 700×150×150 mm for 28 days to determine the mechanical properties of concrete.

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 EFFECT OF FOAMING AGENT IN SELF CONSOLIDATING LIGHTWEIGHT CONCRETE (SCLC)

2019 ◽  
Vol 81 (4) ◽  
Author(s):  
Mohd Afiq Mohd Fauzi ◽  
Ahmad Ruslan Mohd Ridzuan ◽  
Nurliza Jasmi ◽  
Mohd Fadzil Arshad ◽  
Mohd Shafee Harun
Keyword(s):  
Compressive Strength ◽  
Lightweight Concrete ◽  
Foam Concrete ◽  
Concrete Technology ◽  
Normal Concrete ◽  
Conventional Concrete ◽  
Foaming Agent ◽  
Self Consolidating Concrete ◽  
Strength Performance ◽  
Lightweight Foam

Self-Consolidating Lightweight Concrete (SCLC) is relatively a new concept and can be regarded as a revolutionary development in the field of concrete technology. It is a type of concrete that might not require vibration for placing it and could be produced by reducing the density of concrete. However, the density of normal Self Consolidating Concrete (SCC) is similar to normal concrete approximately 2400kg/m3. By using foaming agent, the density of concrete can be reduced up to 1800kg/m3. Due to the heavy density of concrete, it will give the initial higher supply cost over conventional concrete, has slowed down its application to general construction. It is also hard to handle for construction and transportation. Therefore, it is advantages to produce SCC with lower density to provide benefit and enhancement of its performance by a combination of two types of concrete technology that is SCC technology and Lightweight Foam Concrete technology. This paper was focused to identify the effect of foaming agent on the fresh properties and compressive strength of SCLC. The influence of foaming agent contained in the range from 0 second, 1 second, 2 second, 3 second and 4 second to the strength characteristic identified in the SCLC. The specimens were tested for compressive strength at 3, 7, 14 and 28 days. The result indicated that the compressive strength of SCLC is decreasing when foaming agent content was added. Meanwhile, the flowability of SCLC is increasing when foaming agent content added. Based on the finding, SCLC containing 3 second of foaming agent is achieving the density target, which is 1800kg/m3 and better compressive strength performance.

scholarly journals Durability Characteristics of Ceramic Waste based Light Weight Concrete

2018 ◽  
Vol 7 (3.12) ◽  
pp. 369 ◽  
Author(s):  
Madhumitha. S ◽  
Dhinakaran. G
Keyword(s):  
Construction Industry ◽  
Coarse Aggregate ◽  
Light Weight ◽  
Ceramic Tiles ◽  
Conventional Concrete ◽  
Ceramic Waste ◽  
Production Stage ◽  
Light Weight Concrete ◽  
Durability Performance ◽  
Disposal Problem

Ceramic waste powder (CWP) is one waste material produced during cutting of ceramic tiles. CWP is rich in silica and alumina and is a fine material. Due to generation of more such waste it is mandatory to make use such material effectively in construction industry to minimize the disposal problem and also to reduce production of cement. Use of such material will minimize the carbon foot print in production stage of concrete. LECA is a light weight expanded clay aggregate could be used as substitute to natural coarse aggregate which is energy intensive. In this study, CWP is partially substituted for cement and LECA is partially substituted for natural coarse aggregate. CWP was used from 10 to 30% and LECA was used from 20 to 40%. All the mix combinations were subjected to durability studies namely sorptivity and porosity to study the effectiveness of enhancement on the performance of admixed light weight concrete. All the tests are performed as per ASTM standards. The durability performance of admixed concrete with ceramic waste and LECA aggregate are compared with results of conventional concrete.  

scholarly journals Development of High Quality No Fine Concrete

2016 ◽  
Vol 3 (2) ◽  
pp. 277-282
Author(s):  
Dr. G. Nandini Devi
Keyword(s):  
Mechanical Properties ◽  
Construction Industry ◽  
Coarse Aggregate ◽  
High Quality ◽  
Natural Sand ◽  
Conventional Concrete ◽  
Structural Application ◽  
Alternative Material

Natural sand is being extorted at an increasing rate. Construction industry is looking for an alternative material for sand and research is going on to find new innovative concrete. No fines concrete has been generally used for paving applications, other non-structural application, such as reinforced panels, acoustic, thermal and permeability properties because of its previous nature. In this work, 12.5mm size coarse aggregate is used in place of usually used 20mm size in no fine concrete with various mix ratio of cement and 12.5mm coarse aggregate. Specimens were casted and tested for its mechanical properties. Results are compared with M25 conventional concrete.

scholarly journals Utilization of Rubber Powder of Waste Tyres in Foam Concrete

2019 ◽  
Vol 9 (1) ◽  
pp. 87-90 ◽  
Author(s):  
Seengar Ali Mehrani ◽  
Imtiaz Ali Bhatti ◽  
Nabi Bux Bhatti ◽  
Ashfaque Ahmed Jhatial ◽  
Mouzzam Ali Lohar
Keyword(s):  
Tensile Strength ◽  
Coarse Aggregate ◽  
Mix Design ◽  
Foam Concrete ◽  
Conventional Concrete ◽  
Rubber Powder ◽  
Waste Tire ◽  
Waste Tyres ◽  
Water Curing ◽  
Powder Content

Abstract Foam concrete or light concrete has become increasingly recognizable in commercial and construction field. Foam concrete is not just light in its weight but also light in cost, as there is no coarse aggregate needed in its production. Application of foam concrete is limited due to the fact that it is not as strong as conventional concrete in terms of strength and rigidness. Therefore, this study is to investigate the potential of foam concrete incorporating with rubber powder of waste tire and admixture as an additive material to improve its strength and workability. Thus, the use of rubber powder in this study could enhance the strength by filling the voids in foam concrete. The amount of rubber powder added as additive in foam concrete is 0%, 5%, 10%, 15% and 20% respectively. The amount of plasticizers used is limited to less than 0.4% to the weight of cement. The mix design was set to achieve density of 1800kg/m3. The workability of foam concrete is decreasing as the percentage of rubber power was increasing. The foam concrete containing 5%of rubber powder has highest compressive strength with value of 20.6 MPa for 7 days water curing and 22.3 MPa for 28 days water curing. Significantly showing an increase of 1.7 MPa. The highest value of tensile strength for both air curing 7 and 28 days are 1.86 MPa and 1.97 MPa also held by 3% of rubber powder mix. As a conclusion the optimum rubber powder content to be used in foam concrete is 5% that gives the highest results in terms of workability and strength.

Effect of Limestone Powder in Self Consolidating Lightweight Foam Concrete

2018 ◽  
Vol 280 ◽  
pp. 469-475
Author(s):  
Ahmad Ruslan Mohd Ridzuan ◽  
M.A. Mohd Fauzi ◽  
Mohd Fadzil Arshad ◽  
M.S. Harun ◽  
N. Jasmi
Keyword(s):  
Carbon Dioxide ◽  
Compressive Strength ◽  
Construction Industry ◽  
Cement Content ◽  
Basic Component ◽  
Limestone Powder ◽  
Foam Concrete ◽  
Conventional Concrete ◽  
Main Component ◽  
Lightweight Foam

Self-Consolidating Lightweight Foam Concrete (SCLFC) is known as a concrete which has no requirement towards vibration or compaction effort due to its flowability and capability in filling and achieving full compaction in reinforcement. The main component in SCLFC is cement. Cement is a basic component of concrete that used in construction industry. However, it is also the main source of Carbon Dioxide (CO2) emission. If this component of concrete is replaced with other materials, it surely can help in reducing the emission of CO2. Limestone powder can be replacement with the cement content in SCLFC. Therefore, the aim of this paper is to determine the effect of limestone powder on SCLFC in term of flowability and compressive strength. The specimens were tested for compressive strength at 3, 7, and 28 days. The result indicated the flowability of SCLFC increase with the increase of percentages of limestone powder replacement. Meanwhile, the highest compressive strength of SCLFC containing 10% limestone powder replacement give better performance than the normal SCLFC. Based on the finding, SCLFC containing 10% limestone powder replacement can be categorized same as a conventional concrete hence it can be utilized for construction purposes. Limestone powder can also acts as an alternative replacement in concrete for replacing the cement.

scholarly journals Mechanical Properties of Concrete with Coconut Shell and Fibre as Additives

2021 ◽  
Author(s):  
Bindhu K.R ◽  
Abiya B ◽  
Hasna Haneef ◽  
Jinu David ◽  
Justin Mathew Joseph
Keyword(s):  
Mechanical Properties ◽  
Construction Industry ◽  
Coarse Aggregate ◽  
Negative Impact ◽  
Coconut Shell ◽  
Partial Replacement ◽  
Conventional Concrete ◽  
Materials Used ◽  
Coconut Fibre ◽  
Concrete Matrix

Sustainability is a key in modern construction scenario. Even when the construction industry underwent a revolution in terms of equipment and materials used, the resultant impact on environment skyrocketed. This leads to the adoption of more sustainable approaches in construction like using coconut byproducts such as coconut fibre and shell as additives in concrete. Coconut fibre is abundantly available material which makes it a viable reinforcement material in concrete and the same goes for coconut shell which can be used as a partial replacement for conventional aggregate. This can further act as a new source of income for the coconut producers who get the benefit of the new demand generated by the construction industry. It is also an effective method of disposal of coconut husks and shells and thus reduces their negative impact on the environment. This project aims at studying the variation of strength of coconut fibre reinforced concrete (CFRC) with different percentages of coconut fibre (0.5%, 1%,1.5% and 2% by weight of cement), coconut shell aggregate concrete by replacing coarse aggregate with different percentages of coconut shell ( 15%, 30% and 45%) compared with that of conventional concrete. The optimum percentage of both fibres to be added and coconut shell to be used is determined by analyzing the strength aspects such as flexural, compressive and tensile strength. This project also includes the investigation on the mechanical properties of CFRC with coconut shell aggregate by incorporating coconut fibre and shell together in concrete matrix.

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