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determination of compressive strength of concrete in ethiopia
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Determination of concrete compressive strength of the ...
compressive strength of fresh concrete specimens being kept in the water for 28 days in laboratory conditions. Therefore, the regression-based equation obtained by
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Determination of Compressive Strength of Concrete ...
2019-6-17 Key words: Strength, NDT, Rebound, UPV, In-Situ, Concrete I. the measured compressive strength to obtain a relation INTRODUCTION Quality control of concrete in structures is often performed by testing standard specimens. Thus, the direct determination of concrete strength requires preparation and testing of prepared specimens. The standard test ...
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Determination of the Compressive Strength of
Compressive strengths of this concrete were determined at 7, 28, and 56 days of curing using 150 × 150 × 150 mm cube specimens. Test results showed that the compressive strength of the concrete decreased as the content of ceramic waste present in the concrete increased.
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Determination of the Compressive Strength of
2020-12-22 Compressive strength of concrete from fine ce ramics as partial replacement and stone dust as a full repl acement for river sand, d ecrease as the percentage of fine ceramics increase, gi ving 11 ...
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Compressive strength determination of concrete
2020-9-30 In this study, to determine the compressive strength of concrete through the use of the X-ray CT method, the cubic and cylindrical concrete specimens were first prepared in two different classes with two water-to-cement ratios of 0.35 and 0.31 using the undisturbed materials.
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(PDF) COMPARATIVE STUDY ON THE COMPRESSIVE
PDF On Mar 4, 2019, Dinesh Sellakutty and others published COMPARATIVE STUDY ON THE COMPRESSIVE STRENGTH AND PRODUCTION COST OF HOLLOW CONCRETE BLOCK (HCB) WITH AND WITHOUT RED ASH IN TEPI TOWN ...
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Study on estimation of compressive strength of concrete
the compressive strength of concrete in order to propose basic forms in a strength estimation equation.5 In the previously reported study5 at the specimen level, the ultrasonic velocity measurement accuracy using the proposed method and the applicability of the proposed strength estima-
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Determination of Compressive Strength in Concrete Using ...
2001-4-15 concrete. In this study, M 25 grade of concrete was produced by replacing aggregate by coconut shell. Concrete produced by 0%, 10%, 20%, 30% replacement of coarse aggregate by coconut shell.8 cubes were casted and their compressive strength were evaluated at 7, 14 and 28 days. The compressive strength of concrete reduced
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Compressive Strength of Concrete Cube Test,
2018-5-18 Concrete being the major consumable material after water makes it quite inquisitive in its nature. The strength of concrete is majorly derived from aggregates, where-as cement and sand contribute binding and workability along with flowability to concrete.. This is an in-depth article on Compressive Strength of Concrete.
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Comparative Study on the Compressive Strength of C
2020-10-2 Ø The compressive strength of concrete samples cured by water immersion method (CCWI) has attained better compressive strength than the samples cured by sprinkling method applied twice a day (CCWS). Ø The 28 th day mean compressive strength results are 33.53Mpa, 28.8Mpa and 34.37Mpa for CCWI, CCWS and CCS concrete samples respectively.
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EFFECT OF BONE POWDER IN COMPRESSIVE STRENGTH
2020-6-25 The mortar compressive strength was measured at ages of 7, 28, 90, 180, and 270 days. the compressive strength increases as bone powder addition increases up to 5% beyond this, the compressive strength of mortar with 10 and 15 % BP is lower than that of 0 % BP. The compressive strength ratio is about 115.2% with the addition of
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compressive strength of concrete cube formula
2015-12-23 Cube test of concrete and factors affecting concrete compressive strength. Test procedure and for concrete compressive strength. Compressive strength of concrete for different grades of concrete @ 3 Days, 7 days, 14 days, 21 days 28 days with video explanation.
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Investigating the Effects of Coarse Aggregate Physical ...
degrees of saturation increased, the compressive strength fell. However, at nearly saturated condition, an increase in compressive strength can be found [16]. M. Nishat (2016), studied the relation between strength coarse aggregate and compressive strength of concrete and, states that the stronger and cleaner the aggregates, the better
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A generalized method to predict the compressive
2019-11-30 However, this is a time-consuming, cumbersome, and costly method for determination of high-performance concrete compressive strength (HPCCS). The empirical formula employed generally introduces various regression coefficients to represent the effects of different added materials.
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Compressive Strength Test on Concrete Core -
The diameter of the core specimen for the determination of compressive strength in load bearing structural members shall be at least 3.70 inch[94 mm]. For concrete with nominal maximum size of aggregate greater than or equal to 1.5 inch[37.5 mm], the preferred minimum core diameter shall be ,three times the nominal maximum size of coarse ...
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Concrete Strength Testing Technician
A Concrete Strength Testing Technician is an individual who has demonstrated the knowledge and ability to properly perform, record, and report the results of four basic laboratory procedures related to the determination of concrete compressive and flexural strength.
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Determination of water/cement-ratio of concrete
2020-11-28 source of water in the concrete, workability of the concrete as well as w/c-ratio effect on the strength of the concrete. The laboratory work consisted of the preparation of nine concrete with three different w/c-ratio and each w/c-ratio is divided into three category of air content ranging from 2% to
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Concrete Blocks - Skat
2017-1-24 Concrete Blocks Technical Data Short Description Concrete block construction has gained importance and has become a valid alternative to fired clay bricks. The essential ingredients of concrete are cement, aggregate (sand, gravel) and water. Concrete blocks are produced in a large variety of shapes and sizes. They can be produced
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DOE Methods of Concrete Mix Design Concrete
2021-4-28 Taking 33 MPa as the target strength we proceed as follows: From table 20.46 for 0.50 w/c ratio {Here W/(C + 0.3F)}, the 28 days compressive strength of concrete with ordinary cement is 42 MPa. For target mean strength of 33MPa, from Fig. 20.10, the value of free water W/(C + 0.3F) is 0.65. Note:
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Comparative Study on the Compressive Strength of C
2020-10-2 Ø The compressive strength of concrete samples cured by water immersion method (CCWI) has attained better compressive strength than the samples cured by sprinkling method applied twice a day (CCWS). Ø The 28 th day mean compressive strength results are 33.53Mpa, 28.8Mpa and 34.37Mpa for CCWI, CCWS and CCS concrete samples respectively.
Read More
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Evaluation of Strength and Durability of Hollow
A comparative study on the compressive strength and production cost of hollow concrete block (HCB) with and without red ash was conducted [2] in Tepi town, Ethiopia and the workers concluded that the compressive strength of the HCB without red ash was greater than the HCB with red ash.
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RELIABILTY OF CUBIC COMPRESSIVE TEST RESULTS IN
2020-3-19 CONCRETE STRENGTH ESTIMATION Aderaw Yihunie Tafere A thesis submitted to the school of Research and Graduate Studies of Bahir Dar Institute of Technology, BDU in partial fulfillment of the requirements for the degree of Master of Science in civil engineering. Advisor Name: Dr. Temesgen Wondimu (PhD) BahirDar, Ethiopia June 2017
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Characterization and Optimization of Incinerated
2021-2-13 The compressive strength and tensile strength of concrete made of incinerated municipal solid waste fly ash have shown a slight reduction as the percentage replacement increase at 28 th curing days from the control concrete. Hence, it can be concluded that ordinary Portland cement partially replaced with incinerated municipal solid waste fly ...
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compressive strength of concrete cube formula
2015-12-23 Cube test of concrete and factors affecting concrete compressive strength. Test procedure and for concrete compressive strength. Compressive strength of concrete for different grades of concrete @ 3 Days, 7 days, 14 days, 21 days 28 days with video explanation.
Read More
-
A generalized method to predict the compressive
2019-11-30 However, this is a time-consuming, cumbersome, and costly method for determination of high-performance concrete compressive strength (HPCCS). The empirical formula employed generally introduces various regression coefficients to represent the effects of different added materials.
Read More
-
EFFECT OF BONE POWDER IN COMPRESSIVE STRENGTH
2020-6-25 The mortar compressive strength was measured at ages of 7, 28, 90, 180, and 270 days. the compressive strength increases as bone powder addition increases up to 5% beyond this, the compressive strength of mortar with 10 and 15 % BP is lower than that of 0 % BP. The compressive strength ratio is about 115.2% with the addition of
Read More
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Investigating the Effects of Coarse Aggregate Physical ...
2020-5-5 The strength of concrete mostly depends on the strength and properties of coarse aggregate since the major volume of concrete was covered by coarse aggregate. The physical properties of coarse aggregates do grossly affect the workability and structural performance of concrete. This study considered the effects of physical properties of coarse aggregate on properties of concrete and the ...
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Concrete Blocks - Skat
2017-1-24 Concrete Blocks Technical Data Short Description Concrete block construction has gained importance and has become a valid alternative to fired clay bricks. The essential ingredients of concrete are cement, aggregate (sand, gravel) and water. Concrete blocks are produced in a large variety of shapes and sizes. They can be produced
Read More
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Concrete Formwork Removal Time, Specifications and ...
2021-5-6 Larger concrete section members gain strength in shorter time than smaller sections. Accelerated curing is also a method to increase the strength gain rate with the application of heat. Generally following values of concrete strength is considered for removal of formwork for various types of concrete structural members. Table – 1: Strength of ...
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