
EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON
compressive strength of concrete. Ruiz (1966) found that the compressive strength of concrete increases with an increase in coarse aggregate content until a critical volume is reached, while Bayasi and Zhou (1993) found little correlation between compressive strength and coarse aggregate content.
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Characterization and impact of curing duration on the ...
The compressive strength and flexural strength of coarse aggregate showed that the 25% replacement produces lowstress lightweight slab (Olutoge 2010). However, the coarse aggregate reduced 7.43% cost per cubic meter (Olutoge 2010).
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The Effect of Maximum Coarse Aggregate Size on the ...
between the maximum coarse aggregate size and the compressive strength follows a polynomial with R 2= 1; indicating that the model is reliable. The optimum maximum coarse aggregate size for the best compressive strength of 28 day concrete was therefore found to be 8mm for the water/cement ratio of 0.63. The analysis
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Effect of content and particle size distribution of coarse ...
Apr 01, 2010 The effect of coarse aggregate content on the compressive strength of concrete with and without chemical admixture is illustrated in Fig. 10. When no chemical admixtures were added, increasing the coarse aggregate content from 44% to 47% has led to an increase of the compressive strength.
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IMPACT OF COARSE AGGREGATE ON COMPRESSIVE
compressive strengths, while in normalstrength concretes; coarse aggregate strength has little effect on compressive strength. While Özturan and Çeçen (2007) compared the effects of limestone and basalt on the compressive strength of highstrength concrete in
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(PDF) Compressive strength of concrete with palm kernel ...
On the other hand, the compressive strength test 50% shows an increment in the compressive strength of the 4 75% cube as the day’s increases with 28 days recording, the 2 100% highest value of 4.78 N/mm2 and 4.44 N/mm2 for 10% and 25% replacement of coarse aggregate respectively.
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Compressive Strength of Concrete with Laterite Aggregate ...
MPa and optimum compressive strength of 17.2 MPa with a composition of 38.0% sand, moderate laterite 46.0% and coarse laterite 16.0% so that laterite concrete as a coarse aggregate substitute could used for mix concrete. Keywords— Laterite, Aggregates, Coarse Aggregates, Concrete Compressive Strength I. INTRODUCTION
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The Effect of Maximum Coarse Aggregate Size on the ...
between the maximum coarse aggregate size and the compressive strength follows a polynomial with R 2= 1; indicating that the model is reliable. The optimum maximum coarse aggregate size for the best compressive strength of 28 day concrete was therefore found to be 8mm for the water/cement ratio of 0.63. The analysis
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(PDF) Effect of Size and Content of Coarse Aggregate on ...
The required compressive strength of normal and high strength was set at 6200, 5200 and 4200 Psi for the concrete types A1, A and B respectively after 28 days (ACI 318). For compressive strength ...
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Investigating the Effects of Coarse Aggregate Physical ...
May 05, 2020 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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Effect of coarse aggregate quality on the mechanical ...
Mar 01, 2003 The quality of coarse aggregate has a significant effect on the compressive strength of high strength concrete. The compressive strength of steel slag aggregate concrete was more than that of crushed limestone aggregate concrete. The compressive strength of concrete prepared with calcareous limestone aggregate was the least.
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The Effect of Aggregate Properties on Concrete
Aggregate is classified as two different types, coarse and fine. Coarse aggregate is usually greater than 4.75 mm (retained on a No. 4 sieve), while fine aggregate is less than 4.75 mm (passing the No. 4 sieve). The compressive aggregate strength is an important factor in the selection of aggregate.
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Strength of Coarse Aggregates  Building Research
Strength of coarse aggregates is difficult to measure. While we talk about the strength of coarse aggregates it refers to the crushing strength of the aggregate itself. However, the required information on strength of coarse aggregates can be obtained from indirect tests: crushing strength of prepared rock samples, crushed value of bulk ...
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A Study of Concrete Made with Fine and Coarse Aggregates ...
As the grain size effect can be neglected, the compressive strength depends then only on the proportion of the recycled aggregates (fine or coarse) from FCW. As can be seen in Figure 4 , the compressive strength shows only a 15% decrease for 25% of aggregates replacement and 32% decrease for 100% of aggregates replacement.
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Compressive strength of concrete with palm kernel shell as ...
Mar 14, 2019 This compressive strength test was carried out according to BS EN 123904 filling 150 mm cube mould with concrete in three layers of approximately 50 mm with each layer receiving 25 blows for proper compaction. The mix ratio was 1:2:4 with the coarse aggregate being at 100% gravel and replaced by palm kernel shell at 10, 25, 50, 75, and 100%.
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Prediction of the Compressive Strength of Recycled ...
Recycled aggregate concrete (RAC), due to its high porosity and the residual cement and mortar on its surface, exhibits weaker strength than common concrete. To guarantee the safe use of RAC, a compressive strength prediction model based on artificial neural network (ANN) was built in
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IMPACT OF COARSE AGGREGATE ON COMPRESSIVE
compressive strengths, while in normalstrength concretes; coarse aggregate strength has little effect on compressive strength. While Özturan and Çeçen (2007) compared the effects of limestone and basalt on the compressive strength of highstrength concrete in
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What is the effect of coarse aggregate size in compressive ...
Jul 27, 2020 (2) Compressive strength of a concrete increases with increase in coarse aggregate size. Coarse aggregate size 13.2 mm, 19 mm, 25 mm, and 37.5 mm gave average compressive strength of 21.26 N/mm2, 23.41 N/mm2, 23.66 N/mm2 and 24.31N/mm2 respectively. (3) Flexural strength of concrete beam is inversely affected by the increase in coarse aggregate ...
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[PDF] Effect of Coarse Aggregate Size on the Compressive ...
Compressive strength of cubes is 21.26N/mm 2 , 23.41N/mm 2 , 23.66N/mm 2 , and 24.31N/mm 2 for coarse aggregate sizes 13.2mm, 19mm, 25.0mm and 37.5mm respectively. That of flexural strength of test beams is 4.93N/mm
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Effect of Coarse Aggregate Sources on the Compressive ...
Dec 22, 2019 The results indicate that the coarse aggregate source has significant variation in the compressive strength of various grade of nominal mix concrete. The variation in compressive strength is relatively significant for lean mix concrete (1:2:4 1:2:3) compared to
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Finite Element Analysis of Compressive Strength of ...
Abstract: In order to study prism compressive strength of recycled coarse aggregatesfilled concrete, recycled coarse aggregates of particle size for 4080mm were made from abandoned brick and concrete blocks. 4 groups of recycled coarse aggregatesfilled concrete prism objects were made, and the compressive strength of the specimens were done.
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A REVIEW PAPER ON STUDY OF EFFECT OF COARSE
Compressive strength was obtained higher for normal aggregate than flaky. Also, it was obvious that Compressive strength increases with the decrease in the size of the flakiness index for M 15 and M 20 grade of concrete. Also, the mixtures with rough aggregates have higher strength, especially tensile
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Effects of Void Characteristics on Compressive Strength of ...
The optimum fine aggregate content for 1 in. and ¾ in. sizes coarse aggregate was 10%; whereas the fine aggregate content for ½ in. size coarse aggregate was 0%.
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Compressive Strength of Concrete Cube Test, Procedure ...
May 18, 2018 Factors affecting compressive strength of concrete:Coarse aggregate:Concrete is made homogenous by combining aggregates, cement, sand, water and various other admixtures. But even with proper mixing, there may arise some microcracks due to differences in thermal and mechanical properties of coarse aggregates and cement matrix, which leads to ...
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Strength and Durability Evaluation of Recycled Aggregate ...
May 14, 2015 The aggregate percentage (68.4 %) was divided into 37.6 % coarse aggregate (crushed lime stone) and 30.8 % fine aggregate based on the optimization of packing density of normal weight fine and coarse aggregates used for the control mix. The target cube compressive strength was 50 MPa (7000 psi) and total slump flow was 500 mm (20 in.) spread.
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How does amount of coarse aggregate affect tensile or ...
Flexural strength is one measure of the tensile strength of concrete. It is a measure of an unreinforced con crete beam or slab to resist failure in bending. It is measured by loading 6 x 6inch (150 x 150mm) con crete beams with a span length ...
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Experimental Study of Compressive Strength of Recycled ...
Apr 25, 2014 From the table 6 and graph 1 it can be seen that, the compressive strength of M25 grade normal concrete at 28 days is 39.53 N/mm2. At the same time, the compressive strength at 20 % replacement is found to be 38.96 N/mm2. Also, there is sudden fall in strength at 40% and 60% replacement, as the quantity of RCA increases.
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EVALUATION ON COMPRESSIVE STRENGTH OF CONCRETE
【Abstract】 The paper presented the evaluation of properties waste paper sludge aggregate (WPSAA) as replacement of normal coarse aggregate in concrete.The mining activity of normal coarse aggregate was produced a lot of problem such as noise pollution,air pollution and landslide.In addition,the high human population were created a lot of waste material such as fly ash,waste paper ...
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(PDF) Secondary aggregates and seawater employment for ...
407 The concretes produced with 100% of coarse recycled aggregates suffered a reduction of 42% 408 compressive strength with respect to that of conventional concrete. The requirement of 30 409 MPa of compressive strength was achieved for all the concretes after 1 year of age.
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Flexural and Compressive Strength of Concrete as Affected ...
Title: Flexural and Compressive Strength of Concrete as Affected by the Properties of Coarse Aggregates Author(s): M. F. Kaplan Publication: Journal Proceedings Volume: 55 Issue: 5 Appears on pages(s): 11931208 Keywords: no keywords Date: 5/1/1959 Abstract: Experiments were conducted to determine the effects of the properties of 13 different coarse aggregates on the flexural and compressive ...
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