journals about size effect on concrete compressive strength

In this paper the influence of the size of the cube specimens on the compressive strength of concrete has been investigated. Cube specimens of two different sizes 100 mm and 150mm were used for

An experimental investigation is reported into the size effect for compressive strength from 36 concrete prism specimens under axial loading and with three different kinds of dimensions of 100 100 300mm, 150 150 300mm, 200 200 400mm. Such parameters as strength grade of concrete and reinforcement ratio are taken into consideration. Three different strength grades of concrete and two

In this study, two types of special experiments are carried out to understand flexural compressive strength size effect of concrete members. The first type is an ordinary cylindrical specimen (CS) with a fully penetrated and vertically standing plate type notch at the mid-height of the specimen, which is loaded in compression at the top surface (e.g., in the parallel direction to the notch

Table 4. Maximum size of aggregates, ratio of sizes and the compressive strength of 28 day concrete. Compressive strength of 28 day concrete (N/mm 2) Maximum size coarse aggregate (mm) Maximum size of fine aggregate (mm) Ratio of maximum size of fine to size of coarse aggregate 23.7 10 2 0.20 22.0 14 2 0.14 16.2 20 2 0.10 Figure 1

Jan 03, 2008 Title: Shape and size effects of the specimens on the compressive strength of high-strength concrete Author(s): Rodr guez del Viso, J. ; Ruiz Carmona, J.; Ruiz L pez, G. Publication: ACHE Volume: 59 Issue: 248 Appears on pages(s): 77 - 86 Keywords: High strength concrete, compressive strength, shape, size. Date: 1/3/2008 Abstract: In this paper we investigate the mechanical behavior of high

The compressive strength of BAC increases with the nominal size of aggregate increases for a cement content of 150 kg/m 3 , but when the cement content reaches 200 kg/m3, the compressive strength

Dec 07, 1992 The compressive strength of 70‐, 120‐, 200‐, and 250‐mm concrete cubes, subjected to four different curing regimes, was determined at the ages of 28 and 90 days, in order to study the influence of specimen size on the effect of curing regimes on cube strength. In the first curing regime the specimens were exposed unprotected to 30 C/40

Jul 07, 2021 The slope method and the parameter method were used to calculate the size effect coefficient and the results showed that the linear regression parameter analysis method is more efficient for analyzing the size effect. It is concluded that the size effect coefficients of compressive strength, ultimate load, elastic modulus, ductility, and

The compressive strength of an ordinary concrete after 28 days may be represented by the Bolomey equation where and are the mass of cement and water, and is the air volume. is a coefficient that depends on the characteristics of aggregates. is the compressive strength of the standardized mortar after 28 days

Mar 20, 2018 The study on preparation technology of recycled concrete with economical and technical feasibility has gained more serious attention in each country due to its involvement and effect on the environment protection and the sustainable development of human society. In this study, we conducted a control variable test to investigate and assess the influence of the aggregate size on the strength

For concrete mixing of ordinary compressive strength with no silica fume that cured in water in 90 and 150 days, the compressive strength will increase by approximately 20 and 25 per cent

Dec 12, 2020 ASCE Subject Headings: Size effect, Structural strength, Steel columns, Concrete, Failure analysis, Compressive strength, Structural failures, Strength of materials Journal of Structural Engineering Vol. 146, Issue 12 (December 2020)

Jul 17, 2014 Seven different sizes of multiwalled nanotubes (MWNTs) were used to produce MWNT-cement composites. A trend was observed regarding the effect of nanotube size on compressive strength of composites in most cases. MWNT with outside diameter (OD)

Mar 01, 1978 Abstract. Three series of experiments were carried out to examine the effect of the size and type of aggregate on the size effect in the compressive strength of concrete from the standpoint that it may result from the geometrical heterogeneity of concrete system. According to the test results, the size effect in the concrete strength was closely related to the ratio of the diameter of specimen to that of aggregate (D/d)

Dec 01, 2000 Test results obtained on the effect of specimen size and aggregate size on concrete compressive strength and modulus of elasticity are presented. The concrete was prepared using 4.75, 9.5, 19.0, 37.5, and 75-mm nominal maximum size aggregate. Over 600 cylinders were cast and tested for concrete compressive strength and modulus of elasticity

Abstract. The specimen size and shape effects on the compressive strength of higher strength concrete were investigated on different sized cylinders having constant length-to-diameter ratio ( l d ), different sized cubes, and cylinders with various l d for 40, 60, and 75 MPa compressive strength levels. The apparent strength values of 75mm diameter cylinder and 75 and 100mm cube specimens were lower than those of

Well known as the size effect, the strength of a member tends to decrease when its size increases. Therefore, in view of recent increased interest in the size effect of concrete this research focuses on the size effect of two main classes of compressive strength of concrete: pure axial compressive strength and flexural compressive strength

Jun 01, 2008 For conventional concrete the conversion coefficient was 1.05. It can be concluded that RFC without fiber behaves quite the same as 282 Journal of China University of Mining & Technology Vol.18 No.2 normal and high strength concrete. High strength concrete has a size effect of compressive strength that is more prominent in the fiber-containing RFC

Apr 01, 2005 These data indicate that a Size Effect existed for compressively loaded NSC cylinders under both static and dynamic loads. Generally, as the size of the specimen increased, the apparent strength of concrete decreased. – A variation of concrete strength with the variation of the loading rate was observed

so-called size and shape effect of concrete specimens on the compressive strength test results. According to ( Bažant and Planas (1998) ) , siz e effect can be seen when by

Variation of concrete strength with MAS for the three mixes 1:1.5:3, 1:2:4 and 1:3:6 4. CONCLUSION 1. In general the concrete compressive strength increases when the maximum size of aggregate

The scale effect in the case of normal-weight concrete of different types—plain, ordinary, self-compacting, high strength and ultra-high strength (reactive powder concrete), fiber reinforced—was proven in numerous studies, e.g., [23,24,25,26,27,28,29,30,31,32,33,34]. There are two general conclusions resulting from this research concerning normal-weight concrete: (1) the higher the concrete strength, the lesser the scale effect