COMPRESSIVE STRENGTH OF CONCRETE MADE FROM NATURAL

COMPRESSIVE STRENGTH OF CONCRETE MADE FROM NATURAL FINE AGGREGATE SOURCES IN MINNA, NIGERIA M. Abdullahi1*, A. Yakubu2 and J. I. Aguwa1 (1Department of Civil Engineering, Federal University of Technology, Minna, Nigeria 2Department of Civil Engineering Technology, Niger State Polytechnic, Zungeru, Nigeria) *Corresponding author’s e-mail address:

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(PDF) Compressive Strength of Concrete Made from ...

This paper presents a comprehensive data on the compressive strength of concrete made from aggregates obtained from different sources in Ibadan, Nigeria. Experiments have been performed on 12 ...

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The Compressive Strength of Light Weight Concrete

Okafor [4] in 1988 in Nigeria used PKS and observed that the mechanical properties of the light weight concrete was dependent on concrete mix design, water/concrete ratios and obtained a 28-day compressive strength of 5 to 25 MPa. Later researchers, Okpala [5] , Olanikpekun et al. [6], Alengaram et al. [8] and Jumaat et al. [9] looked at the physical, mechanical and structural properties of ...

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(PDF) Comparative-study of Compressive-strengths and ...

Comparative-study of Compressive-strengths and Densities of Concrete Produced with Different Brands of Ordinary Portland Cement in Nigeria September 2017 Authors:

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Prediction of optimum compressive strength of light-weight ...

2020-07-01  In a related study Teo et al. (2006) reported the compressive strength of oil palm shell concrete to be 28.1 MPa which was higher than the minimum required strength for structural light weight concrete. Also, Daneshmand and Saadatian (2011) studied and reported strength of up to 52 MPa at 28 days for palm kernel shells concrete.

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Neural Network Modeling of Concrete Slump and Compressive ...

The concrete produced had varying water/cement ratios thereby leading to varying slumps and compressive strengths. The slumps varied from 0 to 130 while the compressive strength of the samples was between 11- 30N/mm2. Training, Testing and Validation of Specimen Data:

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OPTIMISATION OF COMPRESSIVE STRENGTH OF PERIWINKLE

river banks of the Niger Delta area of Nigeria. The strength property of concrete is a function of the proportions of the various component materials [7-11]. This paper demonstrates the applicability of Scheffe’s regression theory to determine the mix ratios that optimise the compressive strength of periwinkle shell aggregate concrete. 2. FORMULATION OF OPTIMISATION MODEL According to [5 ...

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DAMAGING EFFECTS OF DIELDREX-20 ON THE COMPRESSIVE ...

JC Ezeokonkwo Department of Civil Engineering University of Nigeria Nsukka. Keywords: Dieldrex -20, compressive strength, concrete, termite Abstract. Destruction of properties by termites is a serious concern to the construction industry in Nigeria. Various insecticides are in use notably the dieldrex-20, used in aqueous solution by ...

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(PDF) Comparative-study of Compressive-strengths and ...

Comparative-study of Compressive-strengths and Densities of Concrete Produced with Different Brands of Ordinary Portland Cement in Nigeria September 2017 Authors:

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The Compressive Strength of Light Weight Concrete

Okafor [4] in 1988 in Nigeria used PKS and observed that the mechanical properties of the light weight concrete was dependent on concrete mix design, water/concrete ratios and obtained a 28-day compressive strength of 5 to 25 MPa. Later researchers, Okpala [5] , Olanikpekun et al. [6], Alengaram et al. [8] and Jumaat et al. [9] looked at the physical, mechanical and structural properties of ...

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(PDF) Comparative Analysis of Concrete Strength Made from ...

2020-01-25  The strength characteristics of concrete made from different brands of cement used in Anambra State, Nigeria are reported in this paper. Samples of

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The Effect of Sea Water on Compressive Strength of Concrete

The Effect of Sea Water on Compressive Strength of Concrete Olutoge, F. Adeyemi1 and Amusan, G. Modupeola2 1Civil Engineering Department, University of Ibadan, Ibadan, Oyo State, Nigeria 2Department of Civil Engineering, Moshood Abiola Polytechnic, Abeokuta, Ogun State, Nigeria ABSTRACT : This paper presents the experimental investigations on the effect of sea water on the compressive strength ...

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Compressive Strength and Abrasion Resistance of Concretes ...

Sixty concrete cubes were cast, cured and tested for compressive strength. A to-tal of seventy-five 150 mm concrete cube specimens were cast, cured and tested for compressive strength according to BS 1881 [30], while 300 concrete prisms of 0 20 40 60 80 100 0.01 0.1 1 10 100 Sieve size (mm) Percent passing (%) Granite Sand

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Effect of Hand Mixing on the Compressive strength of Concrete

Department of Civil Engineering, Federal University of Technology, Minna, Nigeria. E-mail: [email protected] . Received: 13 November 2010 / Accepted: 10 December 2010 / Published: 24 December 2010 . Abstract. This paper presents the effect of hand mixing on the compressive strength of concrete. Before designing the concrete mix, sieve analysis of sharp sand and chippings was

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Compressive Strength Of Concrete Test - Engineering ...

Calculation For Compressive Strength Concrete. Let assume the maximum applied load is 400 KN = 400000 N. Cross-sectional area of cube =15 x 15 = 225 cm². Compressive strength of concrete = 400000/225 = 1778 N/cm² = 1778/9.81 = 181 Kg/cm².

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The 28-Day Myth - National Precast Concrete Association

2013-10-28  In Nigeria, if cube compressive strength fall short of the specified strength, curing of the structural member is adopted as the next option to clear the client’s doubt. If cured samples fails strength test, load test is adopted and if no convincing result is achieved from the above methodologies, client reserve the right to issue you a Non-conformance / rejection of the structural member(s ...

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Testing of Concrete Masonry Blocks for Compressive ...

Compressive strength of concrete Blocks or concrete masonry units are required to know the suitability of these in construction works for various purposes. Concrete masonry blocks are generally made of cement, aggregate and water. Which are usually rectangular and are used in construction of masonry structure. They are available in solid and hollow forms. The nominal dimensions of concrete ...

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Compressive Strength of Road Pavement - CivilWeb Spreadsheets

The compressive strength of the concrete is not important of itself for the performance of the concrete pavement as the loads on a concrete pavement result in bending. While this bending creates both compressive and tensile stresses in the pavement, concrete is much stronger in compression than in tension so the pavement never fails due to a lack of compressive strength. The compressive ...

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Predictive model on compressive strength of concrete made ...

2Subaka Nigeria Limited Port Harcourt Rivers State of Nigeria . Director and Principal Consultant Civil and Environmental Engineering, Research and Development . E-mail: [email protected] E-mail: [email protected] . Abstract: Compressive strength of concrete were generated through thorough empirical applications, the study focus on application of locally occurring 3/8 material ...

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Compressive Strength and Abrasion Resistance of Concretes ...

Sixty concrete cubes were cast, cured and tested for compressive strength. A to-tal of seventy-five 150 mm concrete cube specimens were cast, cured and tested for compressive strength according to BS 1881 [30], while 300 concrete prisms of 0 20 40 60 80 100 0.01 0.1 1 10 100 Sieve size (mm) Percent passing (%) Granite Sand

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Effect of Water Quality on Compressive Strength of Concrete

In Nigeria, different sources of water are used in concrete mixing even though the standard prescribed for water in concrete mixing is Ĩpotable waterĩ. Most regions within the country hardly get potable water in mixing concrete, as a result of scarcity of potable water. This study intends to check the extent to which the type of water used in mixing concrete can affect its strength. The ...

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Assessment of the Condition of an Existing Marine Concrete ...

2020-10-03  Compressive strength and homogeneity assessment of the existing concrete structure was undertaken in accordance with BS EN 12390-3:2019 [17] at selected areas to assess the uniformity of the concrete and to delineate regions in the structure of poor quality and or delamination. It included deteriorated areas and areas representative of sound concrete. For each selected area, 10 readings

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Investigation of the Strength Properties of Palm Kernel ...

of Ibadan, Ibadan, Nigeria. Keywords: Agro-wastes; concrete; ordinary Portland cement; palm kernel shell ash (PKSA); compressive strength NOTATIONS The following abbreviations are used in this paper: ASTM American Society for Testing and Materials OPC Ordinary Portland Cement PKSA Palm Kernel Shell Ash I. INTRODUCTION Concrete is the most versatile heterogeneous construction

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7 Methods for Testing Concrete Strength For Construction ...

2019-06-11  Methods for Testing Compressive Strength of Concrete. 1. Rebound Hammer or Schmidt Hammer (ASTM C805) Method: A spring release mechanism is used to activate a

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(PDF) STRENGTH CHARACTERISTICS OF LATERIZED CONCRETE USING ...

Adepegba (1975) was the first to consider the possibility of replacing sand in concrete with Laterite in Nigeria. He studied the effect of using laterite fines instead of sand in relation to the density, compressive strength, tensile strength, modulus of elasticity and resistance to exposure to high temperature .He concluded that their properties fared well in comparison with those of normal ...

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Concrete Compressive Strength - SlideShare

2015-02-13  Compressive strength test results are primarily used to determine that the concrete mixture as delivered meets the requirements of the specified strength, ƒ´c, in the job specification. Strength test results from cast cylinders may be used for 1. quality control, acceptance of concrete, or for estimating scheduling construction operations such as form removal or for evaluating the adequacy ...

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Influence of Portland Cement Brands and Aggregates Sizes ...

The research replicated some of the common concrete practices adopted by the construction industry in Nigeria to obtain the compressive strength of normal concrete. Two types of Portland cement brand, Type A and Type and three aggregate sizes (12.5mm, 19mm and 30mm) together with a mixed-size aggregate were utilized for the research. The concrete produced were tested for compressive strength ...

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Compressive Strength of Concrete Concrete Cubes What ...

2016-07-07  “ The compressive strength of concrete is given in terms of the characteristic compressive strength of 150 mm size cubes tested at 28 days (fck). The characteristic strength is defined as the strength of the concrete below which not more than 5% of the test results are expected to fall. ” Average 28 days compressive strength of at least three 150 mm concrete cubes prepared

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