Investigating the Effects of Coarse Aggregate Types on The Compressive Strength Of Concrete Aginam, C., Chidolue, C., And Nwakire, 1, 2, 3Department of Civil Engineering, Nnamdi Azikiwe University, Awka Anambra State, Nigeria ABSTRACT Concrete has a far greater strength than mortar and sandcrete of the same cement: aggregate ratio.
Compressive strength function the PSD of coarse aggregate was determined at 7, 14 and 28 days. Results have revealed that the mixtures without chemical admixture made with a ternary combination of granular fraction and having a maximum size of 25 mm, that assures a continuous granular size distribution, have shown the highest compressive strength.
compressive strength at different curing periods 3, 7, 28 and 90 days. The average value of three specimens was taken as the compressive strength of the concrete. The results of compressive strength of natural coarse aggregate and recycled coarse aggregate of concrete cubes and cylinders are tabulated and graphs are provided. Compressive strength
Effect of Different Coarse Aggregate Sizes on the Strength Characteristics of Laterized Concrete. M A Salau and A O Busari. Published under licence by IOP Publishing Ltd IOP Conference Series: Materials Science and Engineering, Volume 96, conference 1
It is observed that the compressive strength of FRC go on increasing up to 20% replacement of natural coarse aggregate by recycled coarse aggregate. Beyond 20% replacement compressive strength ...
coarse aggregate by demolished waste on workability and compressive strength of recycled concrete for the study at 7 and 28 d. The compressive strength thus, observed was compared with strength of conventional concrete. Test results showed that the compressive strength of recycled concrete up to 30% coarse
Jan 01, 2018· The lowering of compressive strength when coarse calcareous aggregate is totally substituted by coarse RBA has been already reported by other authors and related to the increase of the mortar total porosity (Figure 3) owing to the high porosity of RBA [8, 9] and the increased w/b ratio [13, 44], which moves from to in the present ...
ESTIMATION OF THE COMPRESSIVE STRENGTH AND MODULUS OF ELASTICITY OF CEMENTTREATED AGGREGATE BASE MATERIALS Seungwook Lim, ... content of coarse aggregates (remaining sieve),
It is observed that the compressive strength of FRC go on increasing up to 20% replacement of natural coarse aggregate by recycled coarse aggregate. Beyond 20% replacement compressive strength ...
and 35%) as coarse aggregate replacement, on mechanical behavior of SCC such as compressive strength, indirect tensile, and flexural strength (modulus of rupture). Also the effects of elevatedtemperature (room temperature, 200˚C, and 400 ˚C) on these strengths were studied.
compressive strength for all samples that more in coarse aggregate replacement compared to fine aggregate replacement. Abaza and Shtayeh [8] explored the potential to produce a nonstructural concrete using waste crumb tires. 25%, 50%, 75% and of fine aggregate replacement. They observed that compressive strength,
the properties of the natural coarse aggregates being replaced, and volumetric replacement of natural coarse aggregates with The regression relationships in Eq. (1) and (2) were proposed based on the data for the 28day compressive strength and stiffness (Young's modulus) of concrete: f c ',RCA = f c,NA [ – (A/A NA
strength at all ages compared to the concrete with granite as a coarse aggregate. However, Aginam et al [3] gave a contrary view with the higher compressive strength of the normal concrete with granite as a coarse aggregate when compared with the concrete made with washed and unwashed gravel as a coarse aggregate component.
optimum coarse aggregate mix ratio to achieve this strength. A. literature review 1) Medina (2012) Medina studied on effective utilization of ceramic waste as recycled coarse aggregate. It was produced by crushing of sanitary ware and its shape curve of recycled ceramic aggregate was similar to the natural coarse aggregate.
Effect of Coarse Aggregate Size on the Compressive, Effect of Coarse Aggregate Size on the Compressive Strength and the Flexural Strength of Concrete Beam Uploaded by Anonymous 7VPPkWS8O Concrete structures deflect, crack, and loose stiffness when subjected to external load. Inquiry; effect of sizes on strength of granite rock zelbaeu
coarse aggregates, the variation of aggregate crushing value of different coarse aggregates, strength gain of concrete with time for different coarse aggregates and to establish a relation between aggregate crushing value of coarse aggregate and compressive strength of concrete. In the study, Portland Composite Cement (PCC) has not been used. price
Both coarse aggregates and fine aggregates are the main constituents of concrete because they not only give the body to the concrete, it also have a significant effect on the fresh concrete based on aggregate's shape, size, texture, grading and crushing type. Moreover it is proved that aggregate's types has the severe effect on physicmechanical properties of concrete as aggregate covered ...
CBR VALUE OF SANDY SUBGRADE BLENDED WITH COARSE AGGREGATE Kesharwani Sahu A. K. 2 Khan 1,3Department of Civil Engineering, Jamia Milia Islamia, New Delhi,India 2,Department of Civil Engineering, Delhi Technological University, Delhi, India.
compressive strength can be made as compared to all other replacement levels. Index Terms: concrete, compressive strength, optimum, replacement, stone dust, workability. I. INTRODUCTION Conventionally Concrete is a composite material made of cement, fine aggregate, coarse aggregate .
aggregates. The study concluded that compressive strength of concrete improved almost all the % replacements of nor mal crushed coarse aggregate with crystallized slag by 5% to 7%. In case of replacements of fine aggregate and both type of aggregates, the strength improvements were notably noticed at 30% to 50% replacement level. It could also be
The effect of four coarse aggregate types on the compressive strength, flexural strength, and flexural strength/compressive strength ratio of normal and highstrength concrete are reported. With normalstrength concrete mixtures, it was found that the coarse aggregate type did not greatly influence the mechanical properties.
compressive strength. The slab still relies on a minimum design compressive strength (f'c) of 4000 psi at 28days. Proportioning of aggregates is defined by the volume of fine aggregate to the volume of coarse aggregate, as a percent. The lower percentage of fine to total aggregate provides an increase in compressive strength at the
Keywords: concrete, quarry dust, compressive strength, coarse aggregates, partial replacement I. Introduction Concrete is one of the most used building materials globally. They are produced by mixing aggregates, which are inert materials, in fixed proportions with a cementing material and water to produce concrete (Singh 2008).
For concrete with a compressive strength of 3000 psi, the corresponding calculated tensile strengths using these four approximations are 300, 367, 219 and 478 psi, respectively. The type of coarse aggregate in the concrete also significantly affects the compressive/tensile strength relationship.
Effect of porous ceramic coarse aggregate on strength development of highstrength fly ash concrete Yuko OGAWA1, Naoki DOI2, Kenji KAWAI3, Ryoichi SATO4 and Shinichiro ISHIMORI5 ... Compressive strength at the age of 1, 3, 7 and 28 days are shown in Figure 2 (a).
