Mechanical Properties of Concrete Mixed with SiO2 and CaCO3 Nanoparticles

2011 ◽  
Vol 71-78 ◽  
pp. 1233-1236
Author(s):  
De Zhi Wang ◽  
Yun Fang Meng ◽  
Yin Yan Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Partial Replacement ◽  
Replacement Level ◽  
Split Tensile Strength ◽  
Optimal Replacement ◽  
Compressive Strength Of Concrete

The split tensile strength and compressive strength of concrete mixed with SiO2and CaCO3nanoparticles have been experimentally studied. SiO2nanoparticles as a partial cement replaced by 0.5, 1.0, 2.0 and 3.0 wt.% and CaCO3nanoparticles by 1.0 and 3.0 wt.% were added partially to concrete. Curing of the specimens has been carried out for 7, 28, 78 and 128 days after casting. SiO2nanoparticle as a partial replacement of cement up to 3.0 wt.% could accelerate formation of CSH gel at the early ages and hence increase the split tensile strength and compressive strength. The optimal replacement level of cement by SiO2nanoparticles for producing concrete with improved strength was set at 2.0 wt.%. CaCO3nanoparticles as a partial replacement of cement up to 3.0 wt.% could consume crystalline Ca(OH)2and accelerate formation of calcium carboaluminate hydrate at the early ages and increase the split tensile strength and compressive strength. The optimal replacement level of cement by CaCO3nanoparticles for producing concrete with improved strength was set at 3.0 wt.%.

scholarly journals Effects of Partial Replacement of Fine Aggregate with Quarry Dust on Concrete Properties

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
S.O Ajamu ◽  
I.A Raheem ◽  
S.B Attah ◽  
J.O Onicha
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Replacement Level ◽  
River Sand ◽  
Split Tensile Strength ◽  
Stone Dust ◽  
Concrete Production ◽  
Quarry Dust

Natural river sand is one of the important constituent materials in concrete production while stone dust is a material obtained from crusher plants which is also sometimes being used either partially or fully in replacement of natural river sand in concrete production. Use of stone dust in concrete not only improves the quality of concrete but also conserve the natural river sand. However, due its scarcity and environmental degradation caused resulting from excessive mining of Natural river sand, there is need to investigate an alternative material of the same quality which can replace river sand in concrete production. In the present study, experiments were carried out to study the gradation of aggregates, workability, compressive strength and split tensile strength of concrete made using quarry dust as replacement of fine aggregate at 0, 25, 50, 75, and 100%. Grade M15 of concrete was produced with ordinary Portland cement (OPC) for referral concrete while M25 of concrete was prepared for compressive strength and split tensile strength concrete. Workability and Compressive strength were determined at different replacement level of fine aggregate and optimum replacement level was determined based on compressive strength. Results showed that by replacing 50% of fine aggregate with quarry dust, concrete of maximum compressive strength can be produced as compared to all other replacement levels. The effect of quarry dust on compressive strength and split tensile strength was investigated and from the overall result obtained, it was observed that the compressive strength and split tensile strength increased significantly for all the curing ages from 0% to 50% replacement level of quarry dust. Maximum value obtained for 28day compressive and tensile strength were 25N/mm2 and 2.3N/mm2 respectively and this occurred at 50% replacement.

scholarly journals Assessment on Influence of Corncob Ash as a Partial Replacement of Cement in Concrete

2020 ◽  
Vol 9 (8) ◽  
pp. 210-212
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Waste Product ◽  
Partial Replacement ◽  
Corn Cob ◽  
Split Tensile Strength ◽  
Concrete Mechanical Properties ◽  
Building Purpose ◽  
Emission Of Greenhouse Gases

In an attempt to renovate waste product into constructive material for the building purpose, this research considered the use of corn cob ash (CCA) as a partial replacement of cement. Hence, in this research, we have proposed an eco-friendly solution by investigating the utilization of corncob ash with 0, 5, 10 and 15% replacement for cement in M30 grade of concrete Mechanical Properties such as compressive strength, Split tensile strength and Flexural strength at 7,14,28 days are examined in laboratory. The results reveal that Corn Cob Ash can be used as a partial replacement for cement which in turn reduces the emission of greenhouse gases.

scholarly journals Study of Mechanical Properties of Pervious Concrete as a Pavement Material by Partial Replacement of Ggbs in Cement with Addition of Cellulose Fibers

2018 ◽  
Vol 7 (3.31) ◽  
pp. 219
Author(s):  
K M. Ganesh ◽  
A S. S. Vara Prasad ◽  
P S. Viswa Harish ◽  
A Subrahmanyam Raju
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Cellulose Fibers ◽  
Transportation Systems ◽  
Pervious Concrete ◽  
Partial Replacement ◽  
Split Tensile Strength ◽  
Rapid Urbanization ◽  
Subgrade Soil

Among all the transportation systems roadways is most commonly used transportation system. But in present scenario roads faces a lot of problems like potholes, cracks and many other distresses. Not even these but water is also the main enemy to the pavement which causes deformations and changes the texture of subgrade soil resulting in large variation in performance.The total Impervious Surface Change (ISC) in India for the decade 2000 to 2010 is 2274.62 km2. This is one of the most considerable problems due to rapid urbanization where there is a tremendous increase in construction of black topped and different types of impervious pavements. This has an adverse effect on the environment as the storm water becomes stagnant over the surface of the pavement due to inadequate drainage conditions.The necessity for reducing stagnation and the surface runoff has given the inception of pervious pavement surface. Pervious concrete pavement is a special type of its kind with high perviousness with no or minimal fines which allow water to percolate through it and thus the water which is accumulated over the surface can be collected and used for various purposes.The present work studied the mechanical properties and also the permeability of pervious concrete of mix 3:1 aggregate cement ratio. The control mix is altered by partially replacing 30% of cement with Ground Granulated Blast furnace Slag (GGBS), included Cellulose fibers of 5% of weight of the cementitious material and combination of both in one mix and compared the results obtained.The properties such as compressive strength, split tensile strength, flexural strength and permeability are assessed by performing tests. It was observed that there is an increase in Compressive Strength, Split Tensile Strength, Flexure Strength and decrease in the permeability in the altered pervious concrete mixes when compared to the Pervious concrete with no additives.  

scholarly journals A Comprehensive Study on Mechanical Properties of Nominal Grade Concrete Using Copper Slag as Partial Replacement to Fine Aggregate

2018 ◽  
Vol 7 (2.23) ◽  
pp. 443
Author(s):  
USHAKRANTI J ◽  
SRINIVASU K ◽  
NAGA SAI
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Experimental Studies ◽  
Copper Slag ◽  
Copper Production ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
The Impact

Currently situation, improvement of infrastructure has created an excessive demand for herbal sand, which makes it greater expensive and leads to environmental imbalances. The utilization of suitable sustainable choice materials proves that it is the most efficacious choice to traditional concrete materials and can take care of the surrounding environment. Copper slag is an industrial byproduct of copper production. Copper slag is a high-gravity glassy granular material. This paper reports some experimental studies on the outcome of partially changed sand from impact of copper slag on the mechanical houses of concrete. M30 concrete adopts copper slag plan and partly substitutes high-quality combination fines by means of 0%, 10%, 20%, 30%, 40%, 50%, 60%, 80% and 100%. The mechanical properties of concrete measured in the laboratory encompass compressive strength, split tensile strength and bending tensile strength. The have an impact on of partly replacing the quality aggregates with copper slag on the compressive strength, the cut up tensile power of the cylinder and the bending power of the prism has been evaluated. Water absorption assessments have been also conducted to report the impact of copper slag on the absorption price of concrete. Test results affords that it is feasible to utilize copper slag as best aggregate in concrete. 

scholarly journals Combined Effect of Fly-Ash and Ferrochrome Ash as Partial Replacement of Cement on Mechanical Properties of Concrete

2019 ◽  
Vol 93 ◽  
pp. 02008
Author(s):  
Tribikram Mohanty ◽  
Sauna Majhi ◽  
Purnachandra Saha ◽  
Bitanjaya Das
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Fly Ash ◽  
Power Plants ◽  
Thermal Power ◽  
Mineral Admixture ◽  
Waste Materials ◽  
Partial Replacement ◽  
Split Tensile Strength

Due to rapid industrialization extensive quantity of waste materials like fly ash, silica fume, rice ash husk, and ferrochrome ash etc. are generated. Ferrochrome ash is generated from Ferro-alloy industry and fly-ash is produced in thermal power plants are alternative materials which have the potential of being utilized in concrete as a mineral admixture. The present investigation considers the combined influence on strength of concrete using various percentage fly ash and ferrochrome ash as partial replacement of cement. Experiments are carried out to get mechanical properties of ordinary Portland cement by replacement of fly ash by 10%, 20%, 30 % and 3% by ferrochrome ash. Mechanical properties are measured by determining compressive strength, split tensile strength and flexural strength. It can be inferred from the study that a small amount of ferrochrome ash mixed with 30 % fly-ash gives higher compressive strength as compared to fly ash alone. Addition of ferrochrome ash also increases the split tensile strength of concrete. Since ferrochrome ash and fly-ash are both industrial waste, utilization of these waste materials reduced the burden of dumping and greenhouse gas and thereby produce sustainable concrete.

scholarly journals Mechanical Properties of Thermal Ash Aggregate Content in Geopolymer Concrete

2020 ◽  
Vol 8 (6) ◽  
pp. 3954-3957
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Mix Design ◽  
Geopolymer Concrete ◽  
Replacement Level ◽  
Split Tensile Strength ◽  
Aggregate Content ◽  
Natural Aggregate

Elimination of cement in concrete was found to get increased with the introduction of geopolymer concrete. In that geopolymer concrete, natural aggregate was replaced by artificial thermal ash aggregate. The mix design was arrived by trail. The replacement level of artificial aggregate was 20, 40, 60, 80 and 100 percentages by weight of natural aggregate. The results of workability and mechanical properties of the mixes are find to be good. About 135% in compressive strength, 15% in split tensile strength and 987% in flexural strength was find to be increased.

scholarly journals THE EFFECT OF CERAMIC WASTE AS COARSE AGGREGATE ON STRENGTH PROPERTIES OF CONCRETE

2017 ◽  
Vol 36 (3) ◽  
pp. 691-696
Author(s):  
EE Ikponmwosa ◽  
SO Ehikhuenmen
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Control Sample ◽  
Strength Properties ◽  
Waste Material ◽  
Partial Replacement ◽  
Replacement Level ◽  
Ceramic Waste ◽  
Curing Age

This paper reports the findings on an experimental investigation of the effect of partial replacement of coarse aggregate with ceramic waste on strength properties of concrete. Compressive strength tests were conducted using 150x150x150mm cube specimens, while tensile strength was investigated using 150x300mm cylinder specimens. Results of tests show that workability, density, compressive and flexural strength of concrete decreased with increase in ceramic waste content. The compressive strength at 90 days curing age for the control sample was 24.67 N/mm2. Compressive strength values at 90 days curing age for  25%, 50% and 75% replacement levels were 21.78 N/mm2, 19.85 N/mm2and 17.85 N/mm2 respectively. The decrease in density and strength was due to ceramic waste being lighter and more porous than normal coarse aggregate. Tensile strength of concrete with ceramic waste decline gradually from 8.39 N/mm2 to 6.13 N/mm2 for the control and 75% replacement samples respectively. This could be attributed to the water absorption capacity and external porcelain nature of the waste material. A production cost savings of 10.7% for 1:2:4 concrete mix was noted at 75% replacement level. This study concludes that ceramic waste could be used for both structural and non-structural works and recommends that beyond 75% replacement level, ceramic waste material should not be used in concrete structures where strength is the major consideration. http://dx.doi.org/10.4314/njt.v36i3.5

scholarly journals Behavior of Steel Slag Concrete Subjected to Elevated Temperature

2020 ◽  
Vol 9 (4) ◽  
pp. 1165-1170
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
High Temperatures ◽  
Elevated Temperatures ◽  
Coarse Aggregate ◽  
Steel Slag ◽  
Partial Replacement ◽  
High Porosity ◽  
Residual Mechanical Properties

Recycling of materials has become a major interest for engineers. At present, the amount of slag deposited in storage yard adds up to millions of tons/year leading to the occupation of farm land and serious pollution to the environment, as a result of the rapid growth in the steel industry. Steel slag is made at 1500- 1650°C having a honey comp shape with high porosity. Using steel slag as the natural aggregate with a lower waste material cost can be considered as a good alternative for sustainable constructions. The objective of this study is to evaluate the performance of residual mechanical properties of concrete with steel slag as coarse aggregate partial replacement after exposing to high temperatures .This study investigates the behavior of using granulated slag as partial or fully coarse aggregate replacement with different percentages of 0%, 15%, 30%, 50% and 100% in concrete when subjected to elevated temperatures. Six groups of concrete mixes were prepared using various replacement percentages of slag exposed to different temperatures of 400 °C, 600 °C and 800 °C for different durations of 1hr, 1.5hr and 2hr. Evaluation tests were compressive strength, tensile strength, and bond strength. The steel slag concrete mixes showed week workability lower than control mix. A systematic increasing of almost up to 21.7% in compressive strength, and 66.2% in tensile strength with increasing the percentage of steel slag replacement to 50%. And the results showed improvement on concrete residual mechanical properties after subjected to elevated temperatures with the increase of steel slag content. The findings of this study give an overview of the effect of steel slag coarse aggregate replacement on concrete after exposed to high temperatures.

scholarly journals Mechanical Behaviour on Replacement of Aggregate by E-waste in Concrete

2019 ◽  
Vol 9 (2) ◽  
pp. 302-305 ◽  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Mechanical Behaviour ◽  
Coarse Aggregate ◽  
Environmental Problems ◽  
Waste Utilization ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Construction Work ◽  
Split Tensile Strength

Concrete is a widely used material in all construction work. The aim of the project is to study the behavior of concrete with replacement of E waste. The fine aggregate and coarse aggregate are naturally available due to increase in demand it is over exploited. The waste utilization is sustainable solution to environmental problems Waste from electric and electronic equipment is used as an E waste replacement for coarse aggregate in concrete which is used in the construction .Therefore the effects have been made to study the use of E waste components as a partial replacement of coarse aggregate in 5%, 10% and 15%. To determine the optimum percentage of E waste that can be replaced for coarse aggregate the compressive strength and split tensile strength of concrete to be studied. After determining the optimum percentage of E waste that can be replaced with coarse aggregate. The comparison of the conventional and optimum percentage of E waste replaced with concrete has been done

scholarly journals Investigation of the Effect of Addition Nano-papyrus Cane on the Mechanical Properties of Concrete

2021 ◽  
Vol 7 (2) ◽  
pp. 226-235
Author(s):  
Faisal K. Abdulhussein ◽  
Zahraa F. Jawad ◽  
Qais J. Frayah ◽  
ِAwham J. Salman
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Physical Properties ◽  
Construction Material ◽  
Dry Density ◽  
Split Tensile Strength ◽  
Maximum Enhancement ◽  
Concrete Mixtures ◽  
Traditional Construction

This paper investigates the effect of nano-papyrus cane ash as an additive on concretes’ mechanical and physical properties. Three types of concrete mixtures, 1:2:4, 1:1.5:3, and 1:1:2 were prepared for each mixture, nano-papyrus ash was added in five different dosages of 0.75, 1.5, 3, 4.5, and 6% by weight of cement; therefore, eighteen mixes would be studied in this work. Physical properties represented by dry density and slump were also measured for each mix. Moreover, to evaluate the mechanical properties development split tensile strength and compressive strength were obtained at age (7 and 28). Results manifested that the adding of nano ash developed the compressive strength and split tensile strength of concrete and the maximum enhancement recognized in the mixes with a content of 4.5% nano-papyrus in each studied mixture in this work. The slump test results indicated that the workability of concrete increased with adding nano-papyrus ash gradually with increasing nanoparticles' content. As well as, dry density was significant increased with nano-papyrus ratio; greater values were recorded in mixtures with 1.5-4.5% content of nano-papyrus. When comparing the concrete mixes used, it was found that the best results were obtained with 1:1:2 mixtures. This remarkable improvement in concrete properties considers the nano-papyrus is considered a cement economical and useful replacement for traditional construction material. Doi: 10.28991/cej-2021-03091649 Full Text: PDF

Sign in / Sign up

Export Citation Format

Share Document