Effect of Supplementary Cementing Materials on Concrete Resistance Against Sulfuric Acid Attack

Ramezanianpour, Ali Akbar; Zolfagharnasab, Arash; Zadeh, Farnaz Bahman; Estahbanati, Seddigheh Hasanpour; Boushehri, Reza; Pourebrahimi, Mohammad Reza; Ramezanianpour, Amir Mohammad

doi:10.1007/978-3-319-59471-2_261

Cited by 20 publications

(9 citation statements)

References 7 publications

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“…This suggests that the presoaked PCM was well absorbed by the LWA and filled the pores. On the other hand, the lower water absorption of this mix makes it to be less vulnerable to aggressive solutes that exits in the water that penetrates the concrete (Ramezanianpour, Zolfagharnasab et al 2018). Comparison of Mix LWA(CF) and Mix LWA(CF)-P shows the same pattern for the cases that both coarse and fine LWA were used.…”

Section: -7-water Absorption Testmentioning

confidence: 77%

“…Silica fume has a lower density compared to cement, thus, when a portion of cement is replaced by silica fume, the density of the mix decreases. The results of different studies show that decrease in the density reduces the thermal conductivity (Blanco, Garcıá et al 2000, Ramezanianpour, Zolfagharnasab et al 2018. Therefore, the thermal conductivity of concrete decreases when silica fume is incorporated in that.…”

Section: R a F Tmentioning

confidence: 99%

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Thermal and mechanical properties of PCM-incorporated normal and lightweight concretes containing silica fume

2019

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Improving the thermal performance of concrete, as an important construction and pavement material, by incorporating phase change materials (PCMs) has been the topic of much research. Also, various carrier agents such as lightweight aggregate (LWA) have been introduced to incorporate PCMs into concrete. However, incorporation of PCM-impregnated LWA reduces the compressive strength of concrete. In this study, the application of silica fume to improve the compressive strength of PCM-incorporated concrete is investigated. Two types of PCMs, salt hydrate PCM and polyethylene glycol PCM, were incorporated into concrete via scoria LWA, and different physical and mechanical characteristics of the concrete were studied when silica fume was incorporated into the mix. The results show that incorporation of silica fume increases the compressive strength of PCM-incorporated concrete, and at the same time does not diminish the thermal performance of the incorporated PCM. Therefore, incorporation of silica fume was found to be a promising strategy to improve the compressive strength of PCM-incorporated concrete.

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Section: -7-water Absorption Testmentioning

confidence: 77%

Section: R a F Tmentioning

confidence: 99%

Thermal and mechanical properties of PCM-incorporated normal and lightweight concretes containing silica fume

2019

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“…To achieve SCC mixtures with high ow and passing abilities and at the same time avoiding segregation and bleeding in the molds, a poly carboxylic High Range Water Reducing Admixture (HRWR) and Viscosity Modifying Admixture (VMA) as chemical admixtures were used. HRWR increases the slump of concrete without increasing water content [18], and VMA can increase the cohesion and adhesion of concrete. Table 2 summarizes the properties of mix designs.…”

Section: Methodsmentioning

confidence: 96%

Prediction of Plastic Shrinkage Cracking of Self‐Compacting Concrete

Ghoddousi

Abbasi

Shahrokhinasab

et al. 2019

Advances in Civil Engineering

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Concrete exposed to hot climatic conditions is prone to plastic shrinkage after casting within the first few hours due to the water evaporation and restraining conditions of concrete. This cracking is more commonly observed in concrete elements with a large surface area exposed to drying. In this research, plastic shrinkage of 13 self-compacting concrete samples with different cement paste volumes and various coarse to total aggregate ratios was studied. Test specimens of fresh concrete were subjected to a wind tunnel, which simulated hot dry environmental condition immediately after casting. It can be observed from the test results that the relationship between free plastic shrinkage and the difference between bleeding and evaporation is direct and linear. Finally, a model for plastic shrinkage estimation was suggested by considering the effect of free plastic shrinkage strain, restraining factor, and tensile strain capacity of self-compacting concrete.

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“…However, the consumption or the loss of water can result in shrinkage, incurring tensile stresses that can exceed the relatively low tensile strength of the concrete matrix [ 192 ]. The formation of cracks expedites the transport of corrosive agents, mainly chloride ions and CO 2 , into concrete, endangering the durability of reinforced concrete structures [ 193 , 194 , 195 , 196 , 197 ]. Several methods have been suggested to help concrete withstand shrinkage-induced cracks, including the use of shrinkage-compensating cement [ 198 , 199 , 200 ] and/or fibers.…”

Section: Shrinkagementioning

confidence: 99%

State-of-the-Art Review of Capabilities and Limitations of Polymer and Glass Fibers Used for Fiber-Reinforced Concrete

et al. 2021

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The concrete industry has long been adding discrete fibers to cementitious materials to compensate for their (relatively) low tensile strengths and control possible cracks. Extensive past studies have identified effective strategies to mix and utilize the discrete fibers, but as the fiber material properties advance, so do the properties of the cementitious composites made with them. Thus, it is critical to have a state-of-the-art understanding of not only the effects of individual fiber types on various properties of concrete, but also how those properties are influenced by changing the fiber type. For this purpose, the current study provides a detailed review of the relevant literature pertaining to different fiber types considered for fiber-reinforced concrete (FRC) applications with a focus on their capabilities, limitations, common uses, and most recent advances. To achieve this goal, the main fiber properties that are influential on the characteristics of cementitious composites in the fresh and hardened states are first investigated. The study is then extended to the stability of the identified fibers in alkaline environments and how they bond with cementitious matrices. The effects of fiber type on the workability, pre- and post-peak mechanical properties, shrinkage, and extreme temperature resistance of the FRC are explored as well. In offering holistic comparisons, the outcome of this study provides a comprehensive guide to properly choose and utilize the benefits of fibers in concrete, facilitating an informed design of various FRC products.

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Effect of Supplementary Cementing Materials on Concrete Resistance Against Sulfuric Acid Attack

Cited by 20 publications

References 7 publications

Thermal and mechanical properties of PCM-incorporated normal and lightweight concretes containing silica fume

Thermal and mechanical properties of PCM-incorporated normal and lightweight concretes containing silica fume

Prediction of Plastic Shrinkage Cracking of Self‐Compacting Concrete

State-of-the-Art Review of Capabilities and Limitations of Polymer and Glass Fibers Used for Fiber-Reinforced Concrete

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