effect of drywet ratio on properties of concrete under

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Effect of Dry-Wet Ratio on Properties of Concrete Under ...

Concrete is subjected to periodic damage process of initial damage followed by filling compaction, cracking, further filling, and cracking again, in that order.

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Effect of Dry–Wet Ratio on Properties of Concrete Under ...

Dry–wet ratio has a significant effect on concrete sulfate attack. Under the same drying–wetting cycle period, as the dry–wet ratio increases, the degree

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Effect of Dry–Wet Ratio on Properties of Concrete Under ...

In order to explore the drying–wetting cycle test method of concrete under sulfate accelerating erosion, the influence of dry–wet time ratio on concrete sulfate

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Effect of Dry-Wet Ratio on Properties of Concrete Under ...

Aug 27, 2019  Xu et al. studied two kinds of dry and wet cycle (48 h, 72 h) and five dry–wet ratios (1:1, 3:1, 5:1, 1:5 and 1:3) on the effect of concrete chloride ion

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Effect of Dry–Wet Ratio on Properties of Concrete Under ...

Aug 27, 2019  Dry–wet ratio has a significant effect on concrete sulfate attack. Under the same drying–wetting cycle period, as the dry–wet ratio increases, the degree

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Effect of Dry–Wet Ratio on Properties of Concrete Under ...

Dry–wet ratio has a significant effect on concrete sulfate attack. Under the same drying–wetting cycle period, as the dry–wet ratio increases, the degree of deterioration of concrete by sulfate attack increases first and then decreases. When the dry–wet ratio is

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of Ratio on Properties of Concrete - ResearchGate

significant effect on concrete su lfate attack. Under the same drying–wetting cycle period, as the dry– wet ratio increases, the degree of deterioration of concrete by sulfate attack increases ...

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Effect of Dry─Wet Ratio on Properties of Concrete Under ...

Effect of Dry─Wet Ratio on Properties of Concrete Under Sulfate Attack. Guo. ; Wang.

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Influence of dry-wet ratio on properties and ...

Guo et al. [8] and Sutrisno et al. [17] tested the effects of different dry-wet duration ratios on concrete performance under sulfate or chloride attack, by taking the mechanical properties of ...

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Article Effect of Dry–Wet Cycle Periods on Properties of ...

ferent dry–wet duration ratios on concrete performance under sulfate or chloride attack, by taking the mechanical properties of concrete as evaluation indices. The results indicate

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Effect of Dry–Wet Cycle Periods on Properties of Concrete ...

Dry–wet cycle conditions have significant effects on the corrosion of concrete under sulfate attack. However, previous studies have only applied them as a method for accelerating sulfate attack and not systematically studied them as an object. In order to explore the impact of sulfate attack with different dry–wet cycle periods on concrete, in this study, four dry–wet cycle periods (3, 7 ...

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Effect of Sand Fines and Water/Cement Ratio on Concrete ...

content also has adverse effect of the strength of concrete due to poor adhesion. Researchers have therefore develop various models for predicting the effect of sand fines and W/C on the strength of concrete. However, there is a gap in literature for the combined effect of sand fines and water/cement ratio’s effect on the properties of concrete.

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Effect of Water Cement ratio on Concrete properties - YouTube

Dec 15, 2018  This video shows the effect of water cement ratio on the concrete properties. Water to cement ratio plays very important role in the concrete mix. If this ra...

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Effect of fly ash on mechanical properties and ...

Particularly, macropores and microcracks have a negative effect on the durability of CFRC under sulfate dry–wet cycles. (5) As a green and environment-friendly concrete additive, the combined use of FA and CF can effectively improve the durability of concrete under sulfate dry–wet cycles and bring long-term environmental benefits.

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LIGHTWEIGHT AGGREGATE CONCRETE: EFFECT OF AGE

The properties mainly depend on the properties of the lightweight aggregate like particle density, water absorption capacity. The aim is to study the impact of the time under water storage on compressive strength and fracture tests results. Keywords: Lightweight aggregate concrete (LWAC), standard cube test, under water storage, age effect 1.

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[PDF] Study on the Deterioration of Concrete under Dry–Wet ...

In order to study the deterioration and mechanism of dry–wet cycles and sulfate attack on the performance of concrete in seaside and saline areas, the deterioration of compressive strength of concrete with different water cement ratios under different erosion environments (sodium sulfate soaking at room temperature and coupling of dry–wet cycling and sodium sulfate) was studied here.

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(PDF) Effects of initial curing condition on the fluid ...

Effects of initial curing condition on the fluid transport properties in OPC and fly ash blended cement concrete. Cement and Concrete Composites, 2004. ... The effect of mineral admixtures on the properties of high-performance concrete. By Irma Ahmad. Strength and Durability Properties of Alkali Activated Slag and Fly Ash-Based Geopolymer Concrete.

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Damage of high-water quick-setting material exposed to ...

Jul 22, 2021  Under the coupling effect of dry-wet cycles and chloride salt solution attack, cement-based composites degraded more quickly. The HWQSM with a water-cement ratio of 3:1, which has better resistance to dry-wet cycles compared to a higher water-cement ratio, was selected as the object of this study (Zhou et al. 2020).

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[PDF] Study on the Deterioration of Concrete under Dry–Wet ...

In order to study the deterioration and mechanism of dry–wet cycles and sulfate attack on the performance of concrete in seaside and saline areas, the deterioration of compressive strength of concrete with different water cement ratios under different erosion environments (sodium sulfate soaking at room temperature and coupling of dry–wet cycling and sodium sulfate) was studied here.

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Effect of Sand Fines and Water/Cement Ratio on Concrete ...

content also has adverse effect of the strength of concrete due to poor adhesion. Researchers have therefore develop various models for predicting the effect of sand fines and W/C on the strength of concrete. However, there is a gap in literature for the combined effect of sand fines and water/cement ratio’s effect on the properties of concrete.

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Influence of the Saturation Ratio on Concrete Behavior ...

When a concrete structure is subjected to an impact, the material is subjected to high triaxial compressive stresses. Furthermore, the water saturation ratio in massive concrete structures may reach nearly 100% at the core, whereas the material dries quickly on the skin. The impact response of a massive concrete wall may thus depend on the state of water saturation in the material.

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Effect of concrete slats, three mat types and out ...

May 30, 2017  Phillips CJC, Morris ID. The locomotion of dairy cows on concrete floors that are dry, wet or covered with a slurry of excreta. J Dairy Sci. 2000; 83:1767–1772. doi: 10.3168/jds.S0022-0302(00)75047-8. [Google Scholar]

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Factors Affecting Strength of Concrete - The Constructor

Water / Cement Ratio The relation between water cement ratio and strength of concrete is shown in the plot as shown below: The higher the water/cement ratio, the greater the initial spacing between the cement grains and the greater the volume of residual voids not filled by hydration products. There is one thing missing on the graph.

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What is Poisson's Ratio of concrete? - The Constructor

The concrete Poisson’s ratio under dynamic loads varies mostly between 0.20 to 0.25. By and large, it ranges from 0.1 for high strength concrete to 0.2 for low strength concrete. For design of concrete structures, the most common value of concrete Poisson’s ratio is taken as 0.2.

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EFFECT OF SURFACE-PENETRANTS FOR CONCRETE UNDER

repellant effect, is used in saturated concrete under F-T temperature cycles, the water-pressure must be significantly higher than the concrete without the water-repellant penetrant. That is, such a surface-penetrant may decrease the F-T deterioration resistance of concrete rather than the durability improvement effect.

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CONCRETE Optimizing the Use of Fly Ash in Concrete

concrete grow dramatically with close to 15 million tons used in con-crete, concrete products and grouts in the U.S. in 2005 (ACAA 2006). Historically, fly ash has been used in concrete at levels ranging from 15% to 25% by mass of the cementitious material component.The actual amount used varies widely depending on the application, the properties

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Effects of Polythene Fibers on Selected Properties of Concrete

Effects of Polythene Fibers on Selected Properties of Concrete ... Effects of Polythene Fibers on Selected Properties of Concrete. Adeleke Olusegun. Afolayan J.O. Ijalana F.B. Download PDF. Download Full PDF Package. This paper. A short summary of this

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COMPACTION OF CONCRETE – PURPOSE, PROCESS EFFECT ...

Feb 17, 2016  3.2 Effect on Hardened Concrete Fig-2 Loss of strength through incomplete compaction. Since compaction of concrete is designed to expel entrapped air and optimise the density of the concrete, it benefits most of the properties of hardened concrete. As may be seen from Fig-2, its effect on compressive strength is dramatic.

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Curing of Concrete

EFFECT OF DURATION OF CURING ON PROPERTIES OF CONCRETE The strength of concrete is affected by a number of factors, one of which is the length of time for which it is kept moist, ie cured. Figure 1 illustrates this, comparing the strength (at 180 days) of concrete for which the surfaces have been: n kept moist for 180 days;

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Experimental investigation for the effect of fiber on the ...

Aug 23, 2019  The purpose of this paper is to investigate the effect of steel and carbon fibers on the mechanical properties of light concrete in terms of tension strength, compressive strength and elastic modulus under completely dry and wet conditions.,In this study, the lightweight concrete made of Light Expanded Clay Aggregate (LECA) as coarse aggregate and sand as fine aggregate was used.

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DAMAGE TO FOUNDATIONS FROM EXPANSIVE SOILS

Concrete drainage devices can be adversely affected by expansive soils (see Fig. 5). Swelling clays can lift and crack concrete ditches, seriously impairing their ability to convey runoff. Subsequent contraction may leave a void under the concrete, leading to piping and erosion as runoff flows under the ditch.

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Numerical Simulation of the Ion Transport Behavior in ...

fiber concrete has better corrosion resistance than ordinary concrete. Lu et al. [11] investigated the damage characteristics of concrete unde r the action of sulfate attack and dry-wet alternation. The result showed that decreasing the water-cement ratio and adding a water-reducing agent can enhance the erosion resistance of high-strength ...

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