Effect of mixture proportions on concrete performance

Amini, Kamran; Vosoughi, Payam; Ceylan, Hali̇l; Taylor, Peter C.

doi:10.1016/j.conbuildmat.2019.03.294

Cited by 15 publications

(10 citation statements)

References 28 publications

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“…With the advantages of high strength, considerable durability, and promising economy, concrete has been one of the most widely used building materials in civil engineering since the 20th century [1][2][3][4][5][6]. When optimizing mix proportion of concrete in many, if not most, engineering construction of China, the trial mix with highest strength is the chosen mix proportion [7][8][9][10][11][12]. Actually, the durability indexes of concrete deserve the same attention as the strength index, especially when the concrete is working in harsh environment [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Durability Behaviour and Optimization of Concrete with Triple‐Admixtures Subjected to Freeze‐Thaw Cycles in Salt Solution

Wang

Zhu

et al. 2021

Advances in Materials Science and Engineering

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In the seasonal frozen area of northeast China, cement concrete is usually in a working environment of cold climate and chlorine erosion coupling effect. In general, with a reasonable addition of air entraining agent (AEA) and multimineral admixtures such as fly ash, blast furnace slag, and silica fume, the durability of cement concrete under the effects of freeze-thaw and salt solution can be significantly improved in cold regions. However, due to several more compositions of cement concrete with multiple mineral admixtures, it would take excessive trial mixtures to select the desired mixture proportion based on the conventional method. This means a great deal of costs of raw materials and laboratory experimental time. In this paper, the experimental scheme of mixture proportion for air-entrained concrete with multimineral admixtures was designed based on the orthogonal experiment design method. Based on the compressive strength, rapid chloride permeability, and weight loss and relative dynamic elastic modulus after salt freeze-thaw cycles, the influence of different mineral admixtures and their dosages on the durability of concrete subjected to freeze-thaw in salt solution was analyzed. After that, based on genetic algorithm, an optimization of mixture proportion was proposed, which only requires less trial mixes and accessible optimization process. The test results indicated the superiority of air-entrained concrete with multimineral admixtures when serving in salt freeze-thaw environment. Eventually, it was also verified that the optimized concrete in this paper could achieve pleasurable durability performances under salt freeze-thaw cycles.

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Section: Introductionmentioning

confidence: 99%

Investigation on Durability Behaviour and Optimization of Concrete with Triple‐Admixtures Subjected to Freeze‐Thaw Cycles in Salt Solution

Wang

Zhu

et al. 2021

Advances in Materials Science and Engineering

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“…Therefore, incorporation of SF accelerates the formation of a 3D pore structure and solidification in the cement paste. Furthermore, incorporation of SF decreases the effective pore size of the matrix because of its very fine particle size distribution, making a denser pore structure ( 30 ). Capillary PWP is directly dependent on the size of capillary pores, so PWP development accelerates in a mixture incorporating SF compared with that of matrix with the same moisture content but no SF.…”

Section: Resultsmentioning

confidence: 99%

Effect of Exposure Conditions and Internal Curing on Pore Water Potential Development in Cement-Based Materials

Vosoughi

Taylor

Najimi

et al. 2020

Transportation Research Record

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Moisture availability is a crucial factor for ongoing hydration reactions and controlling capillary pore water potential (PWP) development in cement-based mixtures. Harsh exposure conditions (such as low relative humidity, high temperature, or high wind speed) or incorporating fine cementitious materials may increase the mixture susceptibility to PWP development, and thus, early-age shrinkage. This study aims to investigate PWP and electrical conductivity development in cement paste and mortar mixtures with various water-to-cement ratios (from 0.25 to 0.4), silica fume substitutions, and internal curing in both sealed and harsh exposure conditions (ambient temperature from 10 to 35°C and relative humidity from 25% to 75%). The results indicate that high ambient temperature and silica fume incorporation substantially accelerate moisture loss and PWP development. The outcome of this study also shows the capability of internal curing using lightweight fine aggregate to delay PWP development in mixtures containing silica fume or exposure to low relative humidity and high-temperature ambient environments.

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“…Various studies have been conducted to observe the impact of adding concrete constituent materials, some of which have been carried out by Kamran Amini et. al [1]. In his research, Amini observed the effect of the characteristic mix proportion on concrete performance, including cement slag replacement, air content, water-tocement ratio (w/cm), and paste volume.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Using Sawdust as Mixture of Concrete Pipe on Water Absorption and Compressive Strength

Ayende¹,

Novianto²

2021

Proceedings of the 2nd Borobudur International Symposium on Science and Technology (BIS-STE 2020)

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This article describes an experimental study of the effect of using sawdust as a mixture of concrete pipe on water absorption and compressive strength. This research was inspired by the amount of sawdust waste from sawmills that had not been utilized. For this purpose, 18 specimens were made with four different values for sawdust: iron ore (5%, 10%, 15%, and 20%). Each specimen has the composition of cement: iron ore (1: 4), and water: cement (0.5%). This research was conducted at PT Indal Steel Pipe. This research to analyse the effect of using sawdust as a mixture of concrete pipe on water absorption and compressive strength. Experimental method using compression test and water absorption test has been used to this study. Main finding from this study showed the higher the composition of sawdust increased water absorption and reduced the compressive strength of the concrete pipe. This study will be useful to reduce waste pollution and improved concrete pipe material in term of production cost.

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Effect of mixture proportions on concrete performance

Cited by 15 publications

References 28 publications

Investigation on Durability Behaviour and Optimization of Concrete with Triple‐Admixtures Subjected to Freeze‐Thaw Cycles in Salt Solution

Investigation on Durability Behaviour and Optimization of Concrete with Triple‐Admixtures Subjected to Freeze‐Thaw Cycles in Salt Solution

Effect of Exposure Conditions and Internal Curing on Pore Water Potential Development in Cement-Based Materials

The Effect of Using Sawdust as Mixture of Concrete Pipe on Water Absorption and Compressive Strength

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