scholarly journals A STUDY ON DIFFERENT PROPERTIES OF CEMENT MORTAR BY PARTIAL REPLACEMENT OF FINE AGGREGATE WITH BOTTOM ASH

This paper consists of the results of an experimental research on the effect of bottom ash as partial replacement of natural sand on the properties of cement mortar. The experimental works were carried out by replacement of fine aggregate with varying percentages of bottom ash i.e. 15%, 20%, 25% and 30%. As the microstructure of mortar matrix changes with varying water cement ratio, the w/c was kept constant i.e. 0.45.Mortar cubes of 70.6mm×70.6mm×70.6mm were casted and vibrated on an electrically operated vibrator. Then various tests including compressive strength, water permeable porosity (apparent porosity), percentage of water absorption, sorptivity were performed on mortar cubes replaced with bottom ash. The results were compared with the results of control mix and all the tests were performed at 3, 7, 28, 56 and 90 days. Based on the results, it is concluded that fine aggregates can be replaced up to 20% with bottom ash in cement mortar.

This paper consists of the results of an experimental research on the effect of bottom ash as partial replacement of natural sand on the properties of cement mortar. The experimental works were carried out by replacement of fine aggregate with varying percentages of bottom ash i.e. 15%, 20%, 25% and 30%. As the microstructure of mortar matrix changes with varying water cement ratio, the w/c was kept constant i.e. 0.45.Mortar cubes of 70.6mm×70.6mm×70.6mm were casted and vibrated on an electrically operated vibrator. Then various tests including compressive strength, water permeable porosity (apparent porosity), percentage of water absorption, sorptivity were performed on mortar cubes replaced with bottom ash. The results were compared with the results of control mix and all the tests were performed at 3, 7, 28, 56 and 90 days. Based on the results, it is concluded that fine aggregates can be replaced up to 20% with bottom ash in cement mortar.


Concrete is a material which widely used in construction industry. The present investigation deals with the study of partial replacement of fine aggregate by Nylon Glass Granules in concrete. The fine aggregates are replaced by 0%, 10%, 20% and 30% by Nylon Glass Granules by volume of natural sand in M35 grade of concrete. Additionally, to increase the tensile strength of concrete 1% of Steel Fiber by volume of cement were added to all the mixes containing Nylon Glass Granules. The concrete produced by such ingredients were cured for 7 and 28 days to evaluate its hardened properties. The 28days hardened properties of concrete revealed that maximum strength is observed for the mix which possesses 20% replacement of fine aggregate by Nylon Glass Granules compared with the conventional concrete, thus it is said to be the optimum mix


Abstract. To overcome the shortage of natural resources for the production of concrete, many waste materials are used to replace the raw materials of concrete. In this way, bottom ash is one of the major industrial wastes which shall be used as the replacement of materials in concrete production. It shall be used to replace the materials either up to one-third. This review brings out the evaluation of the industrial waste material which can be repeatedly used as a substitution for concrete as fine aggregate. This paper reviewed the use of industrial waste i.e., bottom ash as fine aggregate in the concrete. The parameters discussed were physical, chemical, fresh, and hardened properties of the concrete with partial replacement of bottom ash. By reviewing some of the research papers, concluded that 10-15% replacement of fine aggregates is acceptable for all the properties of concrete. High utilization of natural sources -gives the pathway to produce more industrial wastes which are responsible for the development of new sustainable development.


2017 ◽  
Vol 36 (3) ◽  
pp. 686-690
Author(s):  
NM Ogarekpe ◽  
JC Agunwamba ◽  
FO Idagu ◽  
ES Bejor ◽  
OE Eteng ◽  
...  

The suitability of burnt and crushed cow bones (BCCB) as partial replacement for fine aggregate in concrete was studied. The percentages of replacements of fine aggregates of 0, 10, 20, 30, 40 and 50%, respectively of BCCB were tested considering 1: 2: 4 and 1: 11/2 :3 concrete mix ratios. The cow bones were burnt for 50 minutes up to 92oC before being crushed. Ninety-six (96) concrete cubes of 1: 2: 4 mix ratio and ninety-six (96) concrete cubes of 1 : : 3 mix ratio measuring 150x150x150mm were tested for the compressive strength at 7, 14, 21 and 28 days respectively. The research revealed that the BCCB acted as a retarder in the concrete. Water-cement ratio increased with the increase in the percentage of the BCCB. The mixes of 1:2:4 and 1::3 at 28 days curing yielded average compressive strengths in N/mm2 ranging from 16.49 - 24.29 and 18.71 - 29.73, respectively. For the mix ratios of 1:2:4 and 1:: 3 at 28 days curing age,  it was observed that increase in the BCCB content beyond 40 and 50%, respectively resulted to the reduction of the average compressive strength below recommended minimum strength for use of concrete in structural works.http://dx.doi.org/10.4314/njt.v36i3.4


Author(s):  
M. Sriram

Abstract: Sand is the major material used in construction all over the world. Nowadays sand is highly demand for the construction. The main purpose of this project is to investigate the effect of bottom ash in concrete and hence improving the strength and durability of concrete. So the objectives of this study were to investigate the effect of use of coal bottom ash & msand as partial replacement of fine aggregates. Percentages {M-Sand (50%), bottom ash (5%, 10% , 15% , 20%) , silica fume(2% were added) for 25% of bottom ash}. on concrete properties such as compressive strength, splitting tensile strength test. The results of specimens with and without bottom ash, Manufacturing sand, silica fume were compared. The strength of concrete was increased upto 15% replacement of bottom ash instead of fine aggregate and the 25% replacement of bottom ash with 2% of silica fume increased the strength of concrete. Keywords: Bottom ash, silica fume, manufacturing sand


2018 ◽  
Vol 251 ◽  
pp. 01007 ◽  
Author(s):  
Lam Tang Van ◽  
Tho Vu Dinh ◽  
Dien Vu Kim ◽  
Boris Bulgakov ◽  
Olga Aleksandrova ◽  
...  

The benefits of using waste materials as a partial replacement for cement in high performance concrete are also discussed. This paper presents the combined effects of bottom ash TPP “Vung Ang” and expanded polystyrene aggregate on different the properties of light-weight concrete. Twenty different concrete mixtures with a water to cement ratio of 0.4 and superplasticizer to cement ratio of 0.015 were used. On the one hand, the EPS was partially replaced with (0 ÷ 40)% by volume of concrete mixture. On the other hand, the fine aggregate was replaced with (0 ÷ 30)% by mass of BA TPP “Vung Ang”. The engineering properties, including workability, density and compressive strength of light-weight concrete were investigated at different curing times. The level of decrease in the strength depends upon the replacement level of EPS and BA. Specifically, the concrete containing 40% EPS and 30% BA at 28 days of age decrease in average density and strength were 43.2% and 26.4%, respectively, in comparison with the control concrete.


Author(s):  
Leela Prasanth U ◽  
Karan Kumar H ◽  
Afzal Basha Syed

Concrete is a compound material composed of fine aggregates and coarse aggregate bonded together with fluid cement that hardens over time.The deficit of natural sand arises the need of alternative materials for replacement of natural sand. The squashed stone residue which is locally accessible modern strong waste material is ordinarily utilized as a fine aggregate in concrete. In the current examination, an exploratory program was carried out to consider the compressive and split tensile quality of concrete made utilizing stone residue as halfway substitution of fine aggregate at an increment of 10%. Zeolite is a pozzolanic material and its pozzolanic action improves the compressivestrength of concrete. Natural zeolites are supplementary cementitious materials. By adding zeolite, the investigation on the experiments will be carried out to determine the compressive strength and split tensile strength of concrete made using zeolite as partial replacement of cement up to 20 percent at an interval of 5 percent just as the way Stone dust is being replaced to achieve the objective of the project, M30 grade of concrete is prepared. The cube and cylindrical samples shall be tested after a curing period of 7 & 28 days.


2016 ◽  
Vol 857 ◽  
pp. 88-94
Author(s):  
K. Meenu Priyaa ◽  
P. Srinivasan ◽  
P. Gajalakshmi

Concrete is a material synonymous with strength and longevity and plays a vital role in the construction activity. Scarcity of natural sand and its fast rising cost have paved way for use of bottom ash, a residue being collected from the thermal power stations, as substitute for sand. Recent research shows that the mechanical properties of concrete containing bottom ash as a partial replacement of fine aggregate is suitable for construction. The various parameters involved are different percentage of bottom ash and grades of concrete. This present experimental study is made on chloride induced corrosion using accelerated corrosion test (ACT) and related durability properties such as water absorption & porosity, water sorptivity and rapid chloride penetration test (RCPT). Compressive strength test is performed in order to ascertain the mechanical property of bottom ash concrete. The above tests were conducted on the concrete specimens and the results were found comparable with the control concrete up to 20% replacement of bottom ash. Utilization of bottom ash in concrete becomes more significant in cost-saving and reducing the quantity of landfill, thus providing an economical and ecological way of conservation of natural resources.


2015 ◽  
Vol 773-774 ◽  
pp. 916-922 ◽  
Author(s):  
Norul Ernida Zainal Abidin ◽  
Mohd Haziman Wan Ibrahim ◽  
Norwati Jamaluddin ◽  
Kartini Kamaruddin ◽  
Ahmad Farhan Hamzah

Self-compacting concrete which commonly abbrevited as SCC is a special concrete that have the ability to consilodate fully under its own self-weight without any internal or external vibration. This paper presents the experimental investigation carried out to study the strength of self-compacting concrete incorporating bottom ash at different replacement level of natural sand. The composite cement was used and the replacement level of bottom ash to natural sand is set up to 30% by volume. The strength properties such as compressive strength, split tensile strength and flexural strength of the concrete at the age of 7 and 28 days of curing day were conducted. Results shows that the strength of the concrete with bottom ash increased up to replacement level 15% higher than control specimens. This show that bottom ash can be used as supplimentary cementitious materials, having the pozzolanic reactivty.


Sign in / Sign up

Export Citation Format

Share Document