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Predicting the compressive strength of concrete from its
2020.11.10 At ambient condition and at a given age, the uniaxial compressive strength (UCS) of concrete depends mainly on its compositions: cement, water, sand, gravel and admixtures [22], [23], [32]. The homogenization technique can be considered for
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The Time Variation Law of Concrete Compressive
2023.4.14 In addition, the compressive strength of concrete was mainly affected by the water–cement ratio, and strength increased with a decrease in the water–cement ratio [51,59,63]. The CEB-FIP Model
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A systematic review and assessment of concrete strength
2023.7.1 The compressive strength of concrete is conventionally determined by
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Revisiting the concept of characteristic compressive strength of concrete
2020.12.10 The compressive strength of concrete ( σ f) is defined as the maximum
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Compressive strength prediction of high-strength concrete
2023.5.25 Some researchers have developed a linear regression algorithm to
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Empirical models for compressive and tensile strength of
2023.11.14 Ahmad, A. et al. Compressive strength prediction via gene expression
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Prediction model for the compressive strength of green concrete
2023.2.1 Predicting the compressive strength of green concrete is a non
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Dynamic increase factor (DIF) for concrete in ... - ScienceDirect
2022.5.1 The concrete quasi-static compressive strength is assumed to be of a
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Development of compressive strength prediction platform for concrete ...
This software effectively reduces the experimental and computational work required by
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Accurate strength prediction models of ordinary concrete
2021.8.7 The experimental result of average compressive strength of concrete
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(PDF) Effect of Aggregate Maximum Size upon
2017.7.20 These increases in the compressive strength of concrete are in line with the results obtained by Zegardlo, [11] who obtained an increase in strength of 24.7% when using ceramic waste as an ...
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Increasing the Compressive Strength of Concrete
2022.12.1 Based on these assumptions, it is necessary to conduct research on increasing the compressive strength of concrete using PPC at an early age. The specimen used was a concrete cylinder, with 3 ...
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Factors Affecting Strength of Concrete - The
🕑 Reading time: 1 minuteFactors Affecting Strength of Concrete Concrete strength is affected by many factors, such as quality of raw materials, water/cement ratio, coarse/fine aggregate ratio, age of concrete,
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A systematic review and assessment of concrete strength
2023.7.1 Compressive strength models have been proposed based on the conceptual postulation of how the hydrated cement interacts with other particles (i.e., aggregates) and harden [30].The literature demonstrates that Feret was the first to develop a relationship between compressive strength and the ratio of cement to paste and air, as shown by
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Effects of Coarse and Fine Crushed Clay Brick Content on the
2022.5.29 The objective of this study is to investigate the compressive strength and microstructural evolution of recycled aggregate concrete (RAC) containing coarse and fine clay brick aggregates. The compressive strength tests, scanning electron microscopy (SEM) observations, and X-ray diffraction (XRD) tests were performed on RAC and natural
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Influence of delayed casting on compressive strength of concrete: an ...
2020.2.1 Concrete is expected to be placed right after the mixing of cement, aggregates, and water. However, an unexpected delay before placing can occur for many reasons. This affects the compressive strength of the hardened concrete. The aim of the study is to observe the effect of casting delay (up to 480 min or 8 h) on the 28-day
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Optimizing compressive strength of sand treated with MICP
2022.9.30 The compressive strength was measured by means of a concrete penetrometer (B19082, Form + Test Prüfsysteme, ... Thus, by increasing the amount of urea and CaCl 2 used by 49% and 39%, respectively, an increase in the compressive strength of cementation solution 1 to 2 of 144.1 ± 34.5% was achieved. The cementation solution 1,
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Strength enhancement of concrete using incinerated
2021.6.16 The compressive strength was found to increase with an increase in the number of curing days (7 to 28 days), which followed the usual strength development trend of concrete.
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Construction Materials Free Full-Text Effects of Gypsum
2022.6.8 Usage of industrial by-products such as ground granulated blast furnace slag (GGBFS), gypsum, and limestone powder have gained prominence in concrete production. It is, therefore, very important to conduct research into the various materials and their attendant influence on properties of concrete at different ambient temperatures. This
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(PDF) A REVIEW OF PERVIOUS CONCRETE BY USING
2015.1.10 Prajapati et al. (2014) replaced cement by ceramic waste powder in the range of 0% to 30%. by weight for M-25 grade concrete. He investigated that co mpressive strength was achieved. up to 30% ...
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Everything You Need to Know About Concrete
2019.3.31 While traditional concrete normally has a compressive strength ranging anywhere from 2,500 to 5,000 psi, UHPC can have a compressive strength of up to 10 times that of traditional concrete. After
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(PDF) Influence of superplasticizer on strength of concrete
2012.1.1 However, compressive strength is improved by dosage 1.0% of SP after 28 days curing is 55 N/mm2, which is higher than that of control concrete, the optimum amount of admixture must be 1%.
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Effects of water-to-cement ratio on the performance of concrete
2022.10.10 A lower w/c ratio is found to induce a denser concrete structure, a smaller critical pore size, as well as higher compressive strength f cu and GFRP-concrete interfacial bonding strength τ b. (2) Rapid tensile strength degradation of GFRP reinforcements is observed in the early stage of water immersion, but the degradation rate gradually slows ...
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Effects of ocean salts on the compressive strength of concrete
1978.7.1 Compressive strength of the hardened cement paste can increase by 50% when using seawater as the mixing water. Seawater cement paste demonstrates a highly stiffened structure for its rheological behavior at the fresh stage, and it develops a clearly reduced autogenous shrinkage compared to the deionized water cement paste.
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Factors Affecting the Compressive Strength of Geopolymers:
2021.11.25 The study showed that an increase in the Si/Al ratio led to an increase in the compressive strength of the geopolymer concrete , the optimum point being at Si/Al ratio = 2 (SiO 2 / Al 2 O 3 = 4) where a compressive strength of 40 MPa was obtained. Higher amounts of silica led to a loss in compressive strength.
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Effect of Fly Ash on Strength of Concrete SpringerLink
2019.10.26 The experimental values for compression, split tension and flexural strength are presented below under separate headings. 4.1 Effect of Fly Ash on Compressive Strength. Figure 3 shows the deviation of percentage of residual compressive strength of standard concrete (SC) with percentage of fly ash. From Fig. 3, the values of
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Dynamic increase factor (DIF) for concrete in ... - ScienceDirect
2022.5.1 The concrete quasi-static compressive strength is assumed to be of a grade with f c ′ =30 MPa, and its quasi-static tensile strength f t is about 2.9 MPa. According to Eq. According to Eq. (2), for this grade of concrete, the tension global DIF would be equal to 1.7 at a strain rate of 1 s − 1 .
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(PDF) Effect of Water/Cement and Aggregate/Cement Ratios
2021.10.1 compressive strength with increasing a/c ratio for a . ... the compressive strength of the concrete improved by 5% and 3% respectively over the control aggregate proportion of 0.5. Then when the ...
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Concrete Compressive Strength - an overview ScienceDirect
The concrete compressive strength f c and the modulus of elasticity E c were tested according to the Australian Standards AS 1012.9 (1999) and AS 1012.17 (1997), respectively, using a servo-hydraulic testing machine with a range of 3000 kN. In order to obtain more accurate experimental data, the concrete compressive strength and modulus
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