scholarly journals Effect of Silica fume on Ordinary Portland Cement and Polymer Concrete Made out of M Sand

2019 ◽  
Vol 9 (2S2) ◽  
pp. 42-46
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Silica Fume ◽  
Unsaturated Polyester ◽  
High Strength ◽  
Pozzolanic Reaction ◽  
Maximum Strength ◽  
Polymer Concrete ◽  
Split Tensile Strength ◽  
Conventional Concrete

In this investigation, conventional concrete was made with replacing the sand by 80 % of M-sand and the cement by fillet material silica fume in varying percentages say 5%, 10 % , and 15%, to study the compressive strength, split tensile strength and flexural strength. In order to the maximum strength was attained at 10% of silica fume. The result showed that by increasing the silica fume content, the strength of the M-sand concrete was decreased because higher fineness of silica fume content decreases the strength of the M-sand concrete. Secondly polymer concrete with unsaturated polyester resin with hardener MEKP, Cobalt as the accelerator and silica fume in varying percentages say 0%, 5% and 10% was made to study the compressive strength and split tensile strength of polymer concrete. In improved silica fume content the strength was high. Polymer concrete improved the mechanical properties. Polymer concrete system was mainly useful to fill the micro voids. In this research, the maximum strength was attained at 5% of silica fume filler added with polymer concrete. Thus the high strength of the concrete was obtained due to the pozzolanic reaction with the silica fume.

scholarly journals A Study on Mechanical Properties of Conventional Concrete and Coconut Shell Concrete by Replacing Cement with Silica Fume

2018 ◽  
Vol 7 (2.12) ◽  
pp. 437
Author(s):  
V R.Prasath Kumar ◽  
K Gunasekaran ◽  
Sreerag K P
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Silica Fume ◽  
Building Materials ◽  
Coarse Aggregate ◽  
Coconut Shell ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Coconut Shells

High standing estimation of building materials utilized for development is a component of incredible concern. Coconut shell as a completely substitution in the place of coarse aggregate may totally effective for designers in construction industry. The coconut shell concrete is a light weight solid which may decrease the self-heap of a structure. The under taken project depends on inspecting attributes of coconut shell concrete when contrasted with conventional concrete. Coconut shells going from 10mm strainer and held on 6.3mm were considered to utilize for this study. For the current study M100 grade concrete is used to cast the specimens. The principle properties considered testing on coconut shell concrete and conventional concrete is compressive strength, split tensile strength and flexural strength. Examples were taken by supplanting coarse aggregate with coconut shells completely and cement is supplanted by silica fume with various extents of 5%, 10%, 15%, 20%, 25% for compressive strength test and tests were done at 3, 7, 28, 56 and 90 days of curing, it is observed that the ideal compressive strength outcomes were obtained at 10% of silica fume. The flexural strength and  split tensile strength of the specimens are calculated with replacement of cement by silica fume with  different extents of 0%, 5%, 10% and 15%, tests were done at 3, 7 and 28 days of curing. The optimum replacement percentage of cement by silica fume is 10% for compressive strength, split tensile and flexural strength. The primary principle is to lessen the utilization of natural aggregate by supplanting them with coconut shells and to decrease the density of concrete which makes concrete for simple dealing.  

scholarly journals Partial replacement of fine aggregate with Copper slag and marble dust powder in geo-polymer concrete: A review

2021 ◽  
Vol 889 (1) ◽  
pp. 012070
Author(s):  
Amrinder Singh ◽  
Shalika Mehta
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Copper Slag ◽  
Maximum Strength ◽  
Partial Replacement ◽  
Polymer Concrete ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Marble Dust

Abstract -As of late the ascent of substantial creation costs has consistently been a worry of substantial makers and customers. Using current waste to override concrete and some poIn ongoing years the ascent of substantial creation costs has consistently been a worry of substantial makers and buyers. Using present day waste to override concrete and some bit of all out can diminish its cost and environmental dirt of all out can decrease its cost and natural tainting. The mark to the purpose of this paper to audit the shot at powder made from marble dust close by the copper slag as an in part substitution to fine aggregate all out in geo-polymer concrete. Marble dust powder was used in mix in comprise copper slag as in part substitution to fine aggregate in level of 10%, 20%, 30%, 40% and 50%. The strength of geo-polymer concrete was tested after 7 & 28 days. Result shows that compressive strength is increased after the replacement of 60% of copper slag and marble dust powder to fine aggregate and also flexural strength and split tensile strength increases strength upto 60% and 80% after replacement. These discoveries of the examination express that powdered marble dust will be utilized as the conceivable substitution material to fine aggregate to give maximum strength copper slag geo-polymer concrete.

scholarly journals Tests on workability and strength of high strength-flowable concrete containing PET waste fiber

2020 ◽  
Vol 7 (3) ◽  
pp. 115-139
Author(s):  
Sarkawt Karim ◽  
◽  
Azad Mohammed ◽  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fiber Length ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Time Increase ◽  
Fiber Volume ◽  
Split Tensile Strength ◽  
Pet Waste ◽  
Strength Tests

This study describes two workability tests, compressive strength and tensile strength tests of high strength flowable concrete containing plastic fiber prepared from polyethylene terephthalate (PET) waste bottles. For the high fluidity mix Vebe time and V-funnel time tests were carried out. Results show that there is a Vebe time increase with PET fiber addition to concrete being increased with increasing fiber volume and fiber length. V-funnel time was found to reduce when up to 0.75% fiber volume is added to concrete, followed by an increase for larger fiber volumes. When fiber length is increase, there is more time increase, but in general, V-funnel time increase was lower than that of Vebe time, indicating a different influence of PET fiber on the compatibility and flowability. The measured V-funnel time for all mixes was found to conform to the limits of European specifications on the flowability of self compacting concrete. Small descending in compressive strength was recorded for RPET fiber reinforced concrete that reached 15.74 % for 1.5 percent fiber content with 10 mm fiber length. Attractive results was recorded in split tensile strength of RPET fibrous samples which resulted in improvement up to 63.3 % for 1.5 percent of 40 mm fiber length content.

scholarly journals IMPACT OF USING STONE POWDER AND MINERAL ADMIXTURES IN HIGH STRENGTH CONCRETE

2020 ◽  
Vol 4 (5) ◽  
pp. 82-87
Author(s):  
Afzal Basha Syed ◽  
Jayarami Reddy B ◽  
Sashidhar C
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
High Strength Concrete ◽  
High Strength ◽  
Mineral Admixtures ◽  
Test Results ◽  
Concrete Technology ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Strength Concrete

In present era, high-strength concrete is progressively utilized in modern concrete technology and particularly in the construction of elevated structures. This examination has been directed to explore the properties of high-strength concrete that was delivered by using stone powder (SP) as an option of extent on sand after being processed. The aim of the research is to study the effect of replacement of sand with stone powder and substitution of cement with mineral admixtures (GGBS & Zeolite) on the mechanical properties of high strength concrete. The test results showed clear improvement in compression and split tensile nature of concrete by using stone powder and mineral admixtures together in concrete. The increment in the magnitude of compressive strength and split tensile strength are comparable with conventional concrete.

Analytical Study and Laboratory Tests for Investigating the Application of Polymer for Achieving High Strength Concrete

2019 ◽  
Vol 27 ◽  
pp. 39-51
Author(s):  
Kamrun N. Keya ◽  
Alamgir Habib ◽  
Sampa Akhter ◽  
Hasan M. Tamim ◽  
Maksuda Akhter
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Epoxy Resin ◽  
Construction Material ◽  
High Strength ◽  
Experimental Program ◽  
Polymer Concrete ◽  
Conventional Concrete ◽  
Polymer Resin ◽  
Adequate Quality

Polymer concrete is one kind of which is used as an additive of the binding material. Due to their high thermal stability, tensile and flexural strengths, high compressive strength and resistance to chemical, its popularity increasing rapidly and which is now widely used as a construction material. This paper explores a research study that has been establishing a standard correlation between concrete compressive strength with the amount of polymers and other ingredients. Hence a comparison was made between the conventional concrete and polymer concrete. As per ASTM C31, the mix design of polymer concrete is calculated and estimated the material quantity. In this research, a total of twenty-two trail mixes of polymer concrete were prepared with different amount of epoxy resin and hardener. In implementation of experimental program compressive strength test was performed for conventional concrete, polymer resin (epoxy resin) concrete with resin percentage 10%, 12%, 15%, 17% and 20% was performed and compared the results with polymer concrete (no-fly ash) with polymer concrete (fly ash) percentage 15%. It was found that the compressive strength of the polymer concrete was increased with increasing the percentage of a polymer. Compressive strength of the 17% and 20% polymer resin-based polymer concrete was 46.75 MPa and 48.32 MPa and cost was around 1,17,110.00 TK and 1,37,152.00 TK; respectively and also it was observed that by using fly ash the strength of the concrete could be increased significantly. It can be said that higher strength can be achieved with a comparatively high cost. However, the cost can be reduced by proper materials selection, mix ratio, curing and adequate quality control of the material.

scholarly journals Effect of Egg Shell Powder on Strength Behaviour of Concrete

2019 ◽  
Vol 8 (9S3) ◽  
pp. 562-564
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Experimental Tests ◽  
Strength Properties ◽  
Raw Material ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Egg Shell ◽  
The Cost ◽  
Shell Powder

The study of strength behaviour of M20 grade concrete, by exchanging the cement partly by powder of egg shell, for which an experimental tests were carried out and the effect of egg shell powder (0%,5%.10%,15%) on compressive strength characteristics were studied. The result of this present investigation shows that the replacement of 5% of cement with egg shell powder attains the maximum compressive strength. The best and economical percentage exchange of replacement of powder of egg shell (ESP) with cement is about 5% and also reduces the cost of concrete with the use of powder of egg shell, which is available freely as raw material and then it is grinded well to make powder. The egg shell is available from municipal solid waste and is mixed in powder form in concrete by exchanging the cement and is found that 5% replacement is very effective in the improvement of strength properties when compared to the conventional concrete. Also the exchangement of 5% ESP in cement gives higher split tensile strength as compared to other cement ingredient mixtures. In this study, it is fixed that 0.45 is the w/c ratio and it produces medium degree of workability which is suitable for most of the concrete mixtures on site. The addition of eggshell powder as filler in concrete has improved the strength of concrete and also improved and better split tensile strength.

scholarly journals Behaviour of concrete by using artificial aggregates a review

2018 ◽  
Vol 7 (2.21) ◽  
pp. 255 ◽  
Author(s):  
K Manju ◽  
B Dhanush Kumar ◽  
S Suresh Kumar ◽  
S Nirmal Kumar
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Mix Design ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Basic Properties ◽  
Durability Properties ◽  
Natural Aggregate ◽  
Environmental Friendly ◽  
Steel Industries

Natural aggregate is not an environmental friendly material due to its destructive resource consuming nature. GGBS is a byproduct of steel industries, whereas GGBFS mixed with cement of 1:2 ratio making an artificial aggregate, whereas hardening powder used to spray made upon artificial aggregate to develop the strength of concrete. The basic properties of natural and artificial aggregates were determined. The mix design to be determined obtained for conventional concrete of control mix of grade M 25. The different mix proportions were prepared by replacement of 20, 40, 60, 80, 100 of natural aggregate instead of artificial aggregate. To check the compressive strength, split tensile strength determine. Based on the result we choose optimum percentage of aggregate and make it and concrete to determine the durability properties of concrete compared with natural aggregate.  

scholarly journals STUDY AND ANALYSIS OF EFFECT OF STRENGTH PROPERTIES IN CALCINED KAOLIN AND SILICA FUME

2020 ◽  
Vol 8 (6) ◽  
pp. 263-269
Author(s):  
Jigyasa Shukla ◽  
Harsh Gupta
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Silica Fume ◽  
Strength Properties ◽  
Test Results ◽  
Split Tensile Strength ◽  
Strength Performance ◽  
Calcined Kaolin

This paper present the study of various strength such as compressive strength, split tensile strength and flexural strength during 7 and 28 day. It is construct the specimens size 15cm X 15cm X 15cm for testing purpose which depend upon the size of aggregate. Test results are indicated that strength performance of concrete well as in durability aspect are improved using of Silica fume

scholarly journals Experimental Study on Reactive Powder Concrete under Flexural Loading

2018 ◽  
Vol 7 (2.24) ◽  
pp. 552
Author(s):  
Jeganmurugan P ◽  
Rakesh Senthil Kumar G V ◽  
Sivasharmina M ◽  
Sowmiya S ◽  
Vasanthan M
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Silica Fume ◽  
High Strength ◽  
Reactive Powder Concrete ◽  
Split Tensile Strength ◽  
Mix Proportion ◽  
Compressive Strength Test ◽  
Trial And Error Method ◽  
Reactive Powder

Reactive powder concrete (RPC) is ultra high strength with advanced mechanical properties. Reactive powder concrete is a concrete without coarse aggregate, contains cement, silica fume, quartz sand, quartz powder, super plasticizer, steel fibre and polypropylene fibre with very low water cement ratio under normal curing condition. RPC has been produce with high compressive strength ranging from upto 800 MPa with high flexural strength up to 50 MPa and in some cases provided with absences of steel reinforcement. Mix proportions of RPC were found by trial and error method, the concrete cubes of size 100mmx100mmx100mm were cast for find compressive strength of NRPC at 7days. Concrete cubes and cylinders of sizes 100mmx100mmx100mm and 100mmx150mm have to be cast for finding compressive strength and split tensile strength at 28 days. Flexural strength of NRPC and MRPC will be find out by casting prism of size 500mmx 100mmx 100 mm. The optimum mix proportion has to be finalized by comparing the results of all concrete specimens. Compressive strength test results shows that addition of silica fume upto 0.22% will increase the compressive strength of reactive powder concrete.   

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