By and large, strength of concrete produced from crushed concrete aggregate is lower than concrete made using natural aggregate. Strength reduction of concrete produced from recycled coarse aggregate and natural fine aggregate ranges from 5 to 24%. This influenced by strength of crushed concrete, water to cement ratio of crushed and new …

Coarse aggregate is a term used in construction to describe a type of material that is commonly used in the production of concrete. It is typically made up of various materials such as gravel, crushed stone, and recycled concrete. The size of the coarse aggregate can vary, but it is typically between 3/8 inch and 1.5 inches in diameter.

This paper presents a comprehensive review of the past research work done on the effect of using different types of coarse aggregate on various properties of concrete mix like its compressive strength, tensile strength and elasticity modulus.

Furthermore, from Table 7 it can be said that the use of fine crushed aggregate as a replacement of sand increases the compression strength more than the use of coarse crushed aggregate as a replacement of gravels in concrete. Samples …

The paper examined the impact of coarse aggregate on compressive strength of concrete. The preceding section discusses the various literature on the materials and test on concrete. It also discusses relevance of compressive strength of concrete, average compressive strength of concrete with crush granite and quartzite and factors that …

hardened concrete. Also, the compressive strength, Split tensile strength and Flexural Strength for M30 & M40 with 5%, 10%, 15%, 20%, 25%, & 30% replacement of coarse aggregate. The workability of mix is very high at a low water/cement ratio. Key Words: Polystyrene, slump value, compaction factor, compressive strength, split tensile …

the concrete derived from the optimal combination of binary cement, ternary fine, and coarse aggregate had a compressive strength of 22.20 N/mm2 which is higher than the compressive strength of the control mixture at 18.10 N/mm2. The result of the ANOVA carried out showed that the compressive

The investigation reported in this paper is carried out to study the feasibility of using crushed brick to substitute the coarse aggregate in concrete, replacing stone aggregate (partly) by ...

The results of the analysis show that concrete made from alluvial sand (BSS) has very good compressive strength (33.72 MPa at 28 days) followed by concrete made with crushed basalt (BSB), (33.59 ...

3.1 Compressive Strength. Compressive strength of RCA concrete can be influenced by the properties and amount of recycled aggregate. Several factors can influence the compressive strength in RCA concrete, including the water/cement (w/c) ratio, the percentage of coarse aggregate replaced with RCA, and the amount of …

The results indicate that crushed over burnt bricks – sand concrete is medium light weight concrete having a density between 2000-2200 kg/m3 and compressive strength of up to 29.5 N/mm2 compared ...

The strength of concrete is controlled by the proportioning of cement, coarse and fine aggregates, water, and various admixtures. The ratio of the water to cement is the chief factor for determining concrete strength. The lower the water-cement ratio, the higher is the compressive strength. The capacity of concrete is reported in psi – pounds ...

This paper discusses the properties of RCA, the effects of RCA use on concrete material properties, and the large scale impact of RCA on structural members. The review study yielded the following findings in regards to concrete material properties: (1) replacing NA in concrete with RCA decreases the compressive strength, but yields …

Secondly, the strength of CCA-TUS is significantly higher than the original concrete aggregate compacted in the same way (Fig. 28 a), while the stiffness (i.e., E 0.01 and E 50) of CCA-TUS is higher than, or similar to, the original concrete aggregate (Fig. 28 b). These results are consistent with those from series 1 and 2 in that the strength ...

Test results showed that the compressive strength of recycled concrete up to 30% coarse aggregate replacement (C. A. R.) by demolished waste at the end of 28 d has been found to be comparable to ...

Construction aggregates derived from primary resources either by crushing of sound rock masses (crushed stone aggregates) or from naturally occurring unbound clastic sediments (natural sand and gravel aggregates) make the most voluminous mineral raw material exploited by humans nowadays (Fookes 1991; Přikryl 2017).Extremely low …

Concrete compressive strength for general construction varies from 15 MPa (2200 psi) to 30 MPa (4400 psi) and higher in commercial and industrial structures. Compressive strength of concrete depends on many factors such as water-cement ratio, cement strength, quality of concrete material, quality control during the production of concrete, …

The results reveal that the mixes with melted crushed brick aggregate show decrease in concrete compressive strength about 3–13%, flexural strength about 11–33% and modulus of elasticity about ...

30% 0f Recycled Concrete Aggregate and 20% of Crushed Glass is utilized instead of coarse aggregates as it gives high compressive and tensile strength [4]. For a concrete blend having ten percent of glass wastage in place of fine aggregate, the highest improvement in compressive strength was noticed [5] .

The Narmada River sand is used as NS. (ii) Crushed Stone dust is a fine material formed during the process of conversion of rock into aggregate and has particle size ranging from 4 mm to dust size (> 0.075mm). It was procured from stone crusher plant producing 20 mm downgraded aggregate, M/s Maa Pitambara Stone situated at …

basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and coarse aggregate contents with aggregate volume factors (ACI 211.1-91) of0.75 and ... increase in aggregate size results in a decrease in the compressive strength of concrete. Cook (1989) showed that, for compressive strengths in excess of 69 MPa (10,000 psi

The relationship obtained through regression analysis of the above mentioned results is given by f s t = 0.55 f c ′ with a correlation factor 0.89, where f c ′ denotes cylindrical compressive strength of concrete. By using the above relation the STS of concrete mixes can be predicted from compressive strength.

In this study coarse aggregate were partially replaced with steel slag aggregate with different replacement percentage in concrete i.e. 0%, 10%, 20%, and 30%. In which we found compressive strength of concrete with various percentage of steel slag aggregate. We found a significant increase in compressive strength at 20% aggregate replacement.

Recycled aggregate concrete (RAC) is made by crushing, cleaning, and classifying discarded concrete blocks and mixing part or all of them with a specific gradation with cement at a certain proportion to replace natural aggregate which is largely used for the coarse aggregate. From: Multi-Functional Concrete with Recycled Aggregates, 2023.

The study was conducted for medium grade concrete (concrete having cube compressive strength at 28 days between 6 Mpa to 50 Mpa). There is a general belief that crushed aggregates contribute ...

Table 6 shows the average compressive strength of concrete. As the coarse aggregate is replaced by plastic waste, the average compressive strength reduces by 5, 7 and 21% with 5, 10 and 20% of volumes of coarse aggregate replacement respectively. Similar is the case of elastic modulus which reduces by 6, 12 and 18%.

For example, Silva et al. [20], [21], [22] reported that for a replacement percentage of , the relative compressive strength, defined as the ratio of the compressive strength of concrete with coarse RCA to that of the reference concrete with natural aggregate, has a 95% confidence interval of [0.62, 1.21], the relative tensile …

For complete utilization of construction and demolition (C&D) waste, an investigation of all size fractions of C&D waste generated during the recycling process should be conducted. In this work, the effects of three recycled concrete materials with different sizes (recycled coarse aggregate (RCA) with a size of 4.75–25 mm, recycled …

The Compressive strength of specimen can be calculated by dividing maximum load carried by the specimen by cross-sectional area of the specimen cubes. The surface area of specimen: = 150 x 150 = 22500mm² = 225cm². Assume, The Max compression load is 450KN. 1KN = 1000N ; 450Kn = 450×100 = 450000N.

KINDS OF STRENGTH 3.3 Compressive Strength 3.4 Flexural Strength 3.5 Tensile Strength 3.6 Shear, Torsion and Combined Stresses 3.7 Relationship of Test Strength to the Structure MEASUREMENT OF STRENGTH 3.8 Job-Molded Specimens 3.9 Testing of Hardened Concrete FACTORS AFFECTING STRENGTH 3.10 General Comments 3.11 …