Compressive Strength Of Concrete

Predicting the compressive strength of concrete: an in …

The current study provided valuable insights into the compressive strength of concrete and the factors influencing the compressive strength. The key findings can be …

Study on Compressive Strength and Moisture Content of …

Fig.6 Effects of dry density of concrete on compressive strength and water content (Maintenance period for 28d) As can be seen from Figures 1 to 6:

Review on performance and sustainability of concrete

Density of concrete varies from 300 to 1600 kg/m 3. Its distinctive qualities include "low aggregate consumption, high porosity and flowability, effective heat insulation, low …

Optimisation of compressive strength of ed concrete …

The aims of this study is to improve the compressive strength of concrete by incorporating A. iizukae EAN605 into its production process.The study evaluates the impact of various concentrations of A. iizukae EAN605 on optimising compressive strength over 28 days using response surface methodology (RSM).

Mesoscopic simulation of the mechanical behaviour of concrete

Through experimental and numerical research, it was found that concrete retains compressive strength after reaching the peak stress, with stress levels showing recovery and increase during compression. X-ray computed tomography (X-CT) was utilised to acquire the mesostructured and perform mesoscopic simulations of concrete. ...

Right-sizing Under-slab Insulation – Insul

f'c = specified concrete compressive strength in pounds per square inch; h = Thickness of concrete slab in inches; u = Poisson's ratio for concrete (0.15) ... Since EPS insulation rated for 1.85 psi costs about 50% …

Influence of Content and Concentration on the …

Results indicate that an increase in content significantly decreases the strength; however, this reduction is higher in GP mixes than in blended mixes. Nevertheless, …

Effect of fly ash and silica fume on hardened properties of concrete

The compressive strength of concrete with good performance is 7.2 MPa, and the dry density is 827 kg/m 3. The pore diameter of about 400 μm is the main pore diameter that affects the strength of concrete. The thermal conductivity of concrete with the same porosity but different pore size distribution is similar when the pores ...

Compressive Strength of Lightweight Concrete

PDF | On Jul 18, 2019, Saman Hedjazi published Compressive Strength of Lightweight Concrete | Find, read and cite all the research you need on ResearchGate ... The glass is found from a glass ...

Compressive strength, pore structure, and hydration …

In this study, blast furnace slag (BFS) was used instead of partial complex Portland cement (PC) to produce slag concrete (SFC), aiming to improve the ion attack resistance and compressive strength of nature concrete (NFC).

Preparation and characterization of ed concrete using a …

For example, waste clay bricks have been used to replace coarse aggregates from granite into ed concrete mixtures and the results showed that the substitution of 25% have a greater compressive strength (25 MPa) with a density of 1647 kg/m 3.

Effect of temperature on stability of ed concrete …

The ed concrete with temperature at 20 °C possesses a more pores with smaller diameters and more uniform pore size distribution, which is the reason for the lower water absorption and higher compressive strength of the ed concrete [[12], [13], [14]].

Factors Influencing the Density and Compressive Strength of

The compressive strength of both the ed concrete had an increasing trend with a rise in density however the protein-based ed concrete showed better results i.e., 13% higher strength than ...

Improving the compressive performance of concrete …

Based on the experimental results, it was known that the strength of 600 kg/m 3 concrete was slightly higher than that of ceramsite of size 20–30 mm. Increasing the ceramsite volume fraction was equivalent to replacing higher strength concrete with lower strength ceramsite, resulting in a decrease in compressive strength, plateau ...

Compressive strength prediction of lightweight ed concrete …

[Show full abstract] properties of soil-based ed concrete. Dry density, 28-day compressive strength, and thermal conductivity and pore structure tests, were conducted to investigate the ...

Design and characterization of carbonate-stone-powder-based concrete

The compressive strength of concrete is directly related to its density [55]. However, with the same content, the differences in the dry densities of the samples were not significant. In this case, the predominant factor influencing the strength was the ratio of the carbonate powder content to the binder material content.

Assessment of pore structure of concrete containing …

The compressive strength of concrete ranges between 23 and 28 MPa at 28 days. • Durability properties of concrete enhanced with an increase in GGBS dosage. • The concrete specimen exhibits isolated and distinct macropores that have been created. • Pores in concrete are characterised by SEM, MIP, and Image analysis.

Design and Analysis of Concrete

Kearsley and Visagie [1999] reported that, using unclassified fly ash, of which around 40% of the particles have diameters exceeding 45 μm, the 56 day compressive strength of …

Analysis of Compressive Strength of Sustainable Fibre …

This section provides an analysis of the compressive strength of fi ber-reinforced concrete. This section presents a discussion on the impact of compressive strength of 7, 14, and 28-day ...

Properties and applications of ed concrete; a review

In ed concreting, the compressive strength is mostly affected by the content rather than its reliance upon the water–cement ratio [39]. Particularly, the compressive strength of ed concrete is highly influenced by the type of agent such as by protein based agent more than synthetic agent [11].

Machine learning approach for predicting compressive …

The study developed predictive models for concrete compressive strength: Linear Regression (LR), Non-Linear Regression (NLR), and Artificial Neural Network (ANN). …

SealBoss 1640 PolyJacking Slab Lifting

The expanding and compressive strength qualities of SealBoss ® 1640 Structural Strength make it a price competitive alternative for the filling of large voids and 'pockets'. The structural strength of the product is …

Prediction model of compressive strength of ed …

To more accurately evaluate the relationship between pores and compressive strength of ed concrete, the effects of density, water-cement ratio, and ing agent …

Eurocode 2 Table of concrete design properties

Design values of concrete material properties according to EN Unit weight γ. The unit weight of concrete γ is specified in EN Annex A.For plain unreinforced concrete γ = 24 kN/m 3.For concrete with normal percentage of reinforcement or prestressing steel γ = 25 kN/m 3.. Characteristic compressive strength f ck. The characteristic …

Factors Influencing the Density and Compressive Strength of

3.3 Influence of Density on Compressive Strength of FC. The results shows the relationship between the density and compressive strength of concrete. As illustrated in Fig. 5, the compressive strength of FC increases with density. This is because denser concrete often has fewer voids or pores, which can weaken the substance by serving as ...

Preparation of nano-carbon black and silica fume modified concrete …

The compression strength of concrete samples at different densities was tested at 28d. The results are shown in Fig. 2. The compressive strength of the four specimen groups all increased as the density became larger. With the density of 600 kg/m 3, the compressive strength of groups C1.5 and C2 decreased slightly compared to C0.

Evaluating enhanced predictive modeling of concrete compressive

1. Introduction. Due to its lightweight and porous nature, concrete (FC) has emerged as a popular choice for various modern construction applications, including external wall insulation boards, road and bridge construction, and subway tunnels, where reducing self-weight is crucial [1], [2].However, the inherently high porosity of FC often results in lower …

Study on polyurethane ed concrete for use in …

1. Introduction. Structural lightweight concrete has an in-place density (unit weight) of the order of (1440–1840) kg/m 3 compared to normal weight concrete with a density in the range of (2240–2400) kg/m 3.For structural applications, the concrete strength should be greater than (17 MPa) according to ACI 213R [23].ed concrete is a type of lightweight aerated …

Concrete -Materials, Properties, Advantages …

The compressive strength of concrete determined at 28 days, ranges from 0.2 to 10N/mm 2 or can go higher. concrete is differentiated from air entrained concrete in terms of the volume of air that is entrained. The air …

ed Concrete

ed Concrete ed concrete is a highly aerated mortar/paste, typically containing 30 to 80% air bubbles by volume ... (i.e. they are generally lighter than controlled low strength mortar and lightweight aggregate concrete). Final dry densities are between 100 and 300 kg/m³ lower than ´normal concrete´ depending on the prevailing ...