— For the purpose of structural design, concrete is classified into several strength classes based on the so-called characteristic compressive strength f ck in most of European standards (e.g. EN 1992 [3] and NF EN 206-1 [4]) or on the specified compressive strength f c ' in the American standard (ACI-318 [5]).Hereafter, both f ck …

 — It has been observed that, higher concentration of sodium hydroxide solution gives better results in terms of compressive strength of geopolymer concrete. 3.8. Curing temperature The effect of curing temperature on compressive strength of concrete has been observed by comparing results of concrete Mixes 9. Details of the mixes are given in …

 — The compressive strength of the concrete produced using basaltic crushed stone aggregate was higher than the one produced using ... course on effect of heat on concrete, Udine, Italy. Google Scholar Scherefler BA, Brunello P, Gawin D, Majorana CE, ve Pesavento F (2002) Concrete at high temperature with application to tunnel fire. ...

As per studies and researches, the compressive strength of the concrete will increase with age. Most researches were conducted to study the 28th-day strength of concrete. But in reality, the strength at 28th day is less …

 — The elasticity modulus is a very considerable feature of material because of the stresses in the material under load and the effect of the displacement on the structure (Jurowski and Grzeszczyk 2015).One of the most important parameters that will directly affect the reliability of structural analysis and determination of risky structure in existing …

 — 1. Introduction. ed concrete, belonging to the wider class of lightweight concrete, is a special type of concrete that typically includes cement, water, preformed and fine sands, in conjunction with other sand-like fine particles such as fly ash or silica fume [1].The components mixed with the cement paste give rise to the …

Normal reduction in strength of concrete by use of air-entrained admixtures varies from 3 to 7%. This variation of strength shall be considered in the mix design of concrete so that a desired compressive strength is achieved with required amount of admixture and workability. Suitably, trial mix designs should be done to find exact variation of strength …

 — This paper presents the experimental investigations on the effect of sea water on the compressive strength of concrete. Cement concrete cubes of 150mm x 150mm x 150mm were cast using fresh water ...

 — With the integration of steel fibers, the increase in compressive strength in concrete samples is quite evident, which has many effects on increasing the overall mechanical performance of concrete. The addition of macro syntactic fibers improves the fracture toughness and flexibility of concrete (with a slight increase in compressive …

China possesses abundant pumice resources and thereby makes the utilization of pumice in the preparation of pumice aggregate concrete (PAC) a significant strategy for environmental protection and resource …

 — Compressive strength which is the most effective property of concrete was investigated for various types of fine aggregates as listed. 1:2:4 mix ratio and absolute volume method were adopted for ...

 — The results of the present investigation indicate that ANNs have strong potential as a feasible tool for predicting the compressive strength of concrete. A compressive strength of concrete is a ...

 — The size and shape of specimens tested in each series are listed in Table 2.In each concrete mix, circular and square section molds with the aspect ratios (n 1 = h/d) of 1.0 and 2.0 were used to measure 28-day compressive strength, where h and d are height and lateral dimension of the specimen, respectively.The circular section molds with the …

 — The compressive strength of concrete refers to how many pounds per square inch (psi) it can handle when force is applied. It is a reliable indicator of how it will perform under heavy loads or internal pressures caused by freeze-thaw cycles. Understanding what the different psi ratings mean is essential for specifying the right …

 — This indicates a consistent beneficial effect of end-hook steel fibers on the compressive strength of the concrete cubes. As shown in Fig 8, when the 60mm end-hook steel fiber reinforced concrete content …

 — From an extensive experimental dataset, an analysis of published strength data, and an interpretation of compressive failure as a critical phase transition from an …

 — The amount of load applied is then calculated, resulting in the compressive strength of the porous concrete. A depiction of the compressive strength test carried out by the UTM can be seen in Fig. 10. During a compressive strength test, a pervious concrete sample is positioned vertically between two metallic plates and subsequently subjected …

 — 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 …

Effect of carbon nanotubes on properties of cement mortars. Rafat Siddique, Ankur Mehta, in Construction and Building Materials, 2014. 5.2 Compressive strength. The compressive strength is the capacity of a material or structure to withstand loads and the ultimate compressive strength of a material is that value of uniaxial compressive stress reached …

 — In this paper, the effect on compressive strength of hardened concrete using treated wastewater (TWW) and dry sludge (DS) produced by water purification facilities in concrete mixes to substitute ...

 — Compressive strength of concrete containing RHA, adapted from [34,37,53,57]. ... to the packing effect of the pores in the concrete, and enhanced the hydration reaction and .

 — The compressive strength of concrete is highly influenced by the properties of test specimens, such as size and moisture content. This paper presents the results of compression tests on more than 650 test …

Compressive strength is an essential property in structural materials, for example, mortar, which comprises the interacial transtition zone in concrete, stone, and steel, since material design is normally evaluated in terms of the risk of compression failure. In addition the CBM is known as having strength for compression force. Therefore plenty of standard tests …

 — Compressive strength is an essential property of concrete, which changes with time under various factors. In this paper, the time variation law of the compressive strength of concrete was reviewed from …

 — The compressive strength of a concrete mix is a major index of its quality. 1, 2 Neville and Brooks 3 proved that the strength of concrete increases with time due to improved degree of hydration. Thus, a …

 — In case of concrete, for designing structures compressive strength is a salient feature. Concrete mix is designated as per its compressive strength after 28 days of curing for example M25 is a design mix with characteristic compressive strength of 25 N/mm 2 and targeted strength of 31.5 N/mm 2. This strength is completely dominated by the ...

 — This work investigated the effect of clay on the compressive strength of concrete. A total number of 36 concrete cubes of 150 mm were cast, cured, and crushed.

 — Properties such as compressive strength were determined, besides determining the workability of the fresh concrete. However, compressive strength is improved by dosage 1.0% of SP after 28 days ...

The concrete compressive strength covers a wide range of different tests, and the data are scattered in some studies. Therefore, in the current study, f c ′ is restricted to 25, 35, and 45 MPa. Fig. 6 demonstrates the effect of concrete compressive strength on the EBROG bond capacity. This figure is organized based on the number and size of ...

 — The aggregate size plays an important role in the nonlinear mechanical behaviour of concrete, which is strongly related to the size effect. In this study, the meso-mechanical modelling method has been established based on the continuous grading aggregate model to simulate the uniaxial compressive failure behaviour under quasi …