scholarly journals The Influence of Partial Replacement of Some Selected Pozzolans on the Drying Shrinkage of Concrete

2019 ◽  
pp. 189-197
Author(s):  
Ikumapayi C. M. ◽  
Akingbonmire S. L. ◽  
Oni O.
Keyword(s):  
Setting Time ◽  
Research Work ◽  
Drying Shrinkage ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Bamboo Leaves ◽  
Sugarcane Bagasse Ash ◽  
Locust Bean ◽  
Groundnut Shell ◽  
Groundnut Shell Ash

Concrete is prone to cracking and one of the major causes of cracking is drying shrinkage of the hardened concrete. This research work was carried out to study the influence of partial replacement of some selected pozzolans on the drying shrinkage of concrete. Four pozzolans used in this study, were made to replace cement at various percentages resulting in various concrete mixes. Setting time test was conducted for the various cement mixes using Vicat’s apparatus and drying shrinkage test was done for the concrete test specimens. The results of the setting time indicate that partial replacement of pozzolans with ordinary Portland cement increases both the initial and final setting time of cement as the percentage replacement increases. Similarly, drying shrinkage results show that concrete made with Groundnut Shell Ash (GSA) and Locust Bean Pod Ash (LBA) at 12% replacement will have a stable and better shrinkage resistance than the control at both 56 days and 90 days. Meanwhile, the control concrete gives a better drying shrinkage at 28 days curing. In conclusion, the results show that pozzolanas [Bamboo Leaves Ash (BLA), Locust Bean Pod Ash (LBA), Sugarcane Bagasse Ash (SBA) and Groundnut Shell Ash (GSA)] can successfully replace cement up to 12% without necessarily affecting the shrinkage ability of the produced concrete. It also shows that Groundnut Shell Ash (GSA), Locust Bean Pod Ash (LBA) and Bamboo Leaves Ash (BLA) are more resistance to drying shrinkage than the control.

scholarly journals Utilization of Sugarcane Bagasse Ash from Power Co-generation Boilers as a Supplementary Cementitious Material

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Safiki Ainomugisha ◽  
Bisaso Edwin ◽  
Bazairwe Annet
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Sugarcane Bagasse ◽  
Low Income ◽  
Ordinary Portland Cement ◽  
Construction Material ◽  
Sustainable Construction ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Sugarcane Bagasse Ash

Concrete has been the world’s most consumed construction material, with over 10 billion tons of concrete annually. This is mainly due to its excellent mechanical and durability properties plus high mouldability. However, one of its major constituents; Ordinary Portland Cement is reported to be expensive and unaffordable by most low-income earners. Its production contributes about 5%–8% of global CO2 greenhouse emissions. This is most likely to increase exponentially with the demand of Ordinary Portland Cement estimated to rise by 200%, reaching 6000 million tons/year by 2050.  Therefore, different countries are aiming at finding alternative sustainable construction materials that are more affordable and offer greener options reducing reliance on non-renewable sources. Therefore, this study aimed at assessing the possibility of utilizing sugarcane bagasse ash from co-generation in sugar factories as supplementary material in concrete. Physical and chemical properties of this sugarcane bagasse ash were obtained plus physical and mechanical properties of fresh and hardened concrete made with partial replacement of Ordinary Portland Cement. Cost-benefit analysis of concrete was also assessed. The study was carried using 63 concrete cubes of size 150cm3 with water absorption studied as per BS 1881-122; slump test to BS 1881-102; and compressive strength and density of concrete according to BS 1881-116. The cement binder was replaced with sugarcane bagasse ash 0%, 5%, 10%, 15%, 20%, 25% and 30% by proportion of weight. Results showed the bulk density of sugarcane bagasse ash at 474.33kg/m3, the specific gravity of 1.81, and 65% of bagasse ash has a particle size of less than 0.28mm. Chemically, sugarcane bagasse ash contained SiO2, Fe2O3, and Al2O3 at 63.59%, 3.39%, and 5.66% respectively. A 10% replacement of cement gave optimum compressive strength of 26.17MPa. This 10% replacement demonstrated a cost saving of 5.65% compared with conventional concrete. 

scholarly journals PROPERTIES OF CEMENT PASTE AND CONCRETE CONTAINING CALCIUM CARBIDE WASTE AS ADDITIVE

2016 ◽  
Vol 36 (1) ◽  
pp. 26-31
Author(s):  
EN Ogork ◽  
TS Ibrahim
Keyword(s):  
Compressive Strength ◽  
Cement Paste ◽  
Setting Time ◽  
Drying Shrinkage ◽  
Calcium Carbide ◽  
Linear Shrinkage ◽  
Hardened Concrete ◽  
Concrete Compressive Strength ◽  
Initial Setting Time ◽  
Standard Procedures

This paper assessed the effect of calcium carbide waste (CCW) as additive on the properties of cement paste and concrete. The CCW used was sourced from a local panel beating workshop. It was sundried and sieved through a 75 µm sieve and characterized by X-Ray Fluorescence (XRF) analytical method. The consistency, setting times and drying linear shrinkage of cement paste with CCW addition of 0, 0.25, 0.5, 0.75 and 1.0 %, respectively by weight of cement were investigated in accordance with standard procedures. The slump values of fresh concrete containing CCW as additive and of 1:2:4 mix ratio and water-cement ratio of 0.5 was determined. A total of sixty numbers of 150 mm cubes of hardened concrete were tested for compressive strength at 1, 3, 7, 28 and 56 days of curing in accordance with standard procedures. The concrete compressive strength was also modeled using Minitab statistical software based on linear regression technique. The results of the investigations showed that CCW was predominantly of calcium oxide (95.69 %) and a combined SiO2, Al2O3 and Fe2O3 content of 3.14 %. The addition of CCW in cement decreased drying shrinkage (100 %), initial setting time (78 %) and final setting time (57 %), but increased consistency (14 %) at 1.0 % CCW content. The addition of CCW in concrete also showed slight increase in slump (6.5 %) and increase in compressive strength with increase in CCW additive up to 0.5 % and decrease in compressive strength with further increase in CCW content. The 28 days compressive strength of concrete with 0.5 % CCW content was 6.4 % more than normal, while that of concrete with 1.0 % CCW content was 14.9 % less than normal. The compressive strength model of CCW-concrete was developed with R2 value of 0.830 and could be used to predict concrete compressive strength. http://dx.doi.org/10.4314/njt.v36i1.4

scholarly journals An Experimental Investigation on Concrete by Partially Replacing Cement Using Bagasse Ash Powder

2021 ◽  
pp. 414-426
Author(s):  
Manish Ram E ◽  
Sindhu Vaardhini U
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Sugarcane Bagasse ◽  
Setting Time ◽  
Mineral Admixtures ◽  
Partial Replacement ◽  
Waste Products ◽  
Agricultural Industry ◽  
Sugarcane Bagasse Ash ◽  
The Impact

Utilization of the waste products in the agricultural industry has been the focus of Research for economic, environmental, and technical reasons. Sugarcane Bagasse Ash (SCBA) is one of the promising material, with its potential proved to be used as a partial replacement of cement as well as mineral admixtures for producing concrete; properties of such concrete depend on the chemical composition, fineness, specific surface area of SCBA. An experimental investigation will be carried out to examine the impact of replacing cement by bagasse ash to the mechanical and physical properties of pastes and mortars, fresh and harden concrete such as consistency, setting time and workability, compressive strength. Sugarcane Bagasse Ash powder used by replacing fly ash at 40%, 50%, and 60%. Compressive strength and water absorption test will be carried out for evaluating the performance of the material.

Study on partial replacement of groundnut shell ash with cement

2017 ◽  
Vol 8 (3) ◽  
pp. 84 ◽  
Author(s):  
Nadiminti Venkata Lakshmi ◽  
Polinati Satya Sagar
Keyword(s):  
Experimental Investigation ◽  
Construction Industry ◽  
Oil Industry ◽  
Waste Materials ◽  
Partial Replacement ◽  
Split Tensile Strength ◽  
Waste Products ◽  
Cement Ratio ◽  
Groundnut Shell ◽  
Groundnut Shell Ash

Concrete plays a prominent role in the construction industry. In the present scenario, there is a shortage of this material so there is a need to find alternatives to replace it in the concrete. In order to overcome this situation; many waste products which are available freely like a paper waste, red mud, rice husk and plastic waste can be used.  Among all of these, Ground nut shell ash is one of the good waste materials available from the oil industry. It can be used widely for the replacement of cement. The ground net shell contains CaO, SiO2, Al2O3, and Fe2O3. This experimental investigation was carried out to evaluate the strength of concrete, in which cement was replaced with ground nut shell ash for cubes, cylinders, and Prisms with different percentages which vary from 0% to 30% at an interval of 5% were performed. Concrete was batched by weight on adopting a ratio of 1:2:4 with water–cement ratio of 0.6. Concrete cubes of 150*150*150 mm in dimensions, cylinders of 150*300 mm in dimensions and 100*150 mm prisms are used. These Cubes, cylinders, and prisms were tested for 7, 14 and 28 days for compression, flexural and split tensile strengths. It is observed that 10% replacement of ground nut shell ash shown the highest strength values when compared with other percentages and for 15% replacement of ground nut shell ash the compressive and split tensile strength obtained the highest strength rather than other flexural strength.

Groundnut Shell Ash as Partial Replacement of Cement in Concrete

2017 ◽  
Vol 9 (3) ◽  
pp. 313
Author(s):  
M. Vijaya Sekhar Reddy ◽  
K. Sasi ◽  
K. Ashalatha ◽  
M. Madhuri
Keyword(s):  
Partial Replacement ◽  
Groundnut Shell ◽  
Groundnut Shell Ash

CERAMIC WASTE POWDER AS SUPPLEMENTARY CEMENTING MATERIAL IN CONCRETE MIXTURES

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Amr S. El-Dieb ◽  
Dima M. Kanaan
Keyword(s):  
Solid Waste ◽  
Setting Time ◽  
Drying Shrinkage ◽  
Strength Development ◽  
Hardened Concrete ◽  
Ceramic Tiles ◽  
Chloride Permeability ◽  
Ceramic Waste ◽  
Alternative Ingredient ◽  
Cementing Material

Green environment is a challenging concern to accomplish in today’s world. This could be achieved through a beneficial recycling procedure by reusing solid waste materials. Ceramic tiles are widely used in most structures; its production creates waste powder. Concrete that contains solid waste is referred to as “Green” concrete. Using ceramic waste powder (CWP) as an alternative ingredient in concrete will have a positive environmental impact furthermore will help reserve natural resources. In this study CWP will be investigated as supplementary cementing material (SCM) in making concrete. The ceramic waste powder will be used as SCM with different dosages replacing cement. The effect of ceramic waste powder as SCM on the properties of fresh concrete will be investigated such as slump, slump loss and setting time. The properties of hardened concrete will be assessed through compressive strength development, drying shrinkage and durability characteristics was evaluated by rapid chloride permeability test (RCPT) and bulk electrical resistivity. Test results show that CWP can be used as SCM in making concrete. The outcomes of the study shed light on how CWP could be utilized effectively as an alternative ingredient of concrete and the optimum dosage for use which will result in an effective way for using solid waste and protecting the environment.

scholarly journals Utilization of Waste Glass Micro-particles in Producing Self-Consolidating Concrete Mixtures

2016 ◽  
Vol 10 (3) ◽  
pp. 337-353 ◽  
Author(s):  
Yasser Sharifi ◽  
Iman Afshoon ◽  
Zeinab Firoozjaei ◽  
Amin Momeni
Keyword(s):  
Fresh Concrete ◽  
Setting Time ◽  
Drying Shrinkage ◽  
Stability Index ◽  
Waste Glass ◽  
Unit Weight ◽  
Partial Replacement ◽  
Self Consolidating Concrete ◽  
Micro Particles ◽  
Cementing Material

Abstract The successful completion of the present research would be achieved using ground waste glass (GWG) microparticles in self-consolidating concrete (SCC). Here, the influences of GWG microparticles as cementing material on mechanical and durability response properties of SCC are investigated. The aim of this study is to investigate the hardened mechanical properties, percentage of water absorption, free drying shrinkage, unit weight and Alkali Silica Reaction (ASR) of binary blended concrete with partial replacement of cement by 5, 10, 15, 20, 25 and 30 wt% of GWG microparticles. Besides, slump flow, V-funnel, L-box, J-ring, GTM screen stability, visual stability index (VSI), setting time and air content tests were also performed as workability of fresh concrete indicators. The results show that the workability of fresh concrete was increased by increasing the content of GWG microparticles. The results showed that using GWG microparticles up to maximum replacement of 15 % produces concrete with improved hardened strengths. From the results, when the amount of GWG increased there was a gradual decrease in ASR expansion. Results showed that it is possible to successfully produce SCC with GWG as cementing material in terms of workability, durability and hardened properties.

scholarly journals Mechanical Characteristics of Hardened Concrete with Different Mineral Admixtures: A Review

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
Tehmina Ayub ◽  
Sadaqat Ullah Khan ◽  
Fareed Ahmed Memon
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characteristics ◽  
Drying Shrinkage ◽  
Mineral Admixture ◽  
Mineral Admixtures ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Granulated Blast Furnace Slag ◽  
Shrinkage And Creep ◽  
Furnace Slag

The available literature identifies that the addition of mineral admixture as partial replacement of cement improves the microstructure of the concrete (i.e., porosity and pore size distribution) as well as increasing the mechanical characteristics such as drying shrinkage and creep, compressive strength, tensile strength, flexural strength, and modulus of elasticity; however, no single document is available in which review and comparison of the influence of the addition of these mineral admixtures on the mechanical characteristics of the hardened pozzolanic concretes are presented. In this paper, based on the reported results in the literature, mechanical characteristics of hardened concrete partially containing mineral admixtures including fly ash (FA), silica fume (SF), ground granulated blast furnace slag (GGBS), metakaolin (MK), and rice husk ash (RHA) are discussed and it is concluded that the content and particle size of mineral admixture are the parameters which significantly influence the mechanical properties of concrete. All mineral admixtures enhance the mechanical properties of concrete except FA and GGBS which do not show a significant effect on the strength of concrete at 28 days; however, gain in strength at later ages is considerable. Moreover, the comparison of the mechanical characteristics of different pozzolanic concretes suggests that RHA and SF are competitive.

scholarly journals An Investigation on Compressive Strength of Concrete Blended With Groundnut Shell Ash

Neutron ◽  
2021 ◽  
Vol 20 (2) ◽  
Author(s):  
Abdul Wahab Abro ◽  
Aneel Kumar ◽  
Manthar Ali Keerio ◽  
Zubair Hussain Shaikh ◽  
Naraindas Bheel ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Compressive Strength ◽  
Construction Material ◽  
Partial Replacement ◽  
Cement Replacement ◽  
Compressive Strength Of Concrete ◽  
Groundnut Shell ◽  
Carbon Dioxide Co2 ◽  
Strength And Durability ◽  
Groundnut Shell Ash

Concrete is frequently utilized infra-structural construction material all over the world. Cement is the main part of the concrete, during its manufacturing emission of gases such as carbon dioxide (CO2) from cement factories create greenhouse effect. In these days various natural pozzolanic materials are used as partial replacement of cement to enhance strength and durability and to reduction in consumption of cement consequently reduction in carbon dioxide (CO2) emission. The aim of this research is to investigate the effect of groundnut shell ash as a cement replacement material on workability and compressive strength of concrete. One mix of ordinary concrete and five mixes of modified concrete were prepared, where cement is replaced by groundnut shell ash from 3% to 15% by weight of cement, with 3% increment with 1:2:4 binding ratio mixed with 0.5 water/cement ratio. The workability and compressive strength of concrete was investigated. The obtained outcomes demonstrated that, groundnut shell ash as a cement replacement material have significant effect on compressive strength of concrete.

Evaluation of Mechanical Properties of BAGcrete

2014 ◽  
Vol 984-985 ◽  
pp. 693-697
Author(s):  
K. Rekha ◽  
R. Thenmozhi
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Mineral Admixture ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Test Results ◽  
Replacement Ratio ◽  
Blended Cements ◽  
Sugarcane Bagasse Ash ◽  
Partial Cement Replacement

The usage of waste materials in making concrete gives a satisfactory solution to some of the problems related to waste management and environmental concerns. In the development of blended cements, some of the Agro wastes such as sugarcane bagasse ash, rice husk ash and wheat straw ash are used as pozzolanic materials. Few studies have been reported on the use of bagasse ash (BA) as partial cement replacement material. This research aims to study the physical and mechanical properties of hardened concrete prepared with bagasse ash as partial replacement material for cement are reported. The Portland cement was replaced with BA in the ratio of 0%, 5%, 10%, 15% and 20% of weight of cement. The compressive strength, splitting tensile strength and flexural strength of concrete at the age of 28 days were investigated. From the test results it was observed that bagasse ash is an effective mineral admixture, with 5% as optimal replacement ratio of cement.

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