Resistance of Mineral Admixture Concrete to Acid Attack

Goyal, Shweta; Kumar, Maneek; Sidhu, Darshan Singh; Bhattacharjee, Bishwajit

doi:10.3151/jact.7.273

Cited by 56 publications

(42 citation statements)

References 23 publications

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“…7a). These results confirm previous findings about the fact that the presence of pozzolanic admixtures was found to lower the detrimental effect of acid attack on concrete [20,21]. The mixes with rubber waste and fly ash show a resistance to sulphuric acid attack lower than the reference mix (Fig.…”

Section: Resistance To Sulphuric Acid Attacksupporting

confidence: 92%

Properties and durability of HPC with tyre rubber wastes

Azevedo

Pacheco-Torgal

Jesus

et al. 2012

Construction and Building Materials

184

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An estimated 1000 million tyres reach the end of their useful lives every year and 5000 millions more are expected to be discarded in a regular basis by the year 2030. Up to now a small part is recycled and millions of tyres are just stockpiled, landfilled or buried. This paper presents results about the properties and the durability of HPC with partial replacement of sand by tyre rubber wastes. Fly ash and metakaolin are used as partial cement replacement. The durability performance was assessed by means of capillary water absorption and resistance to sulphuric acid attack. The results show the existence of a synergetic effect between fly ash and metakaolin that minimizes the strength loss associated to the use of rubber waste. Results also show that is possible to use rubber waste up to 15% and still maintain a high resistance to acid attack. The mixes with 45% fly ash and 15% metakaolin show a much higher resistance to sulphuric acid attack than the reference mix independently of the rubber waste content.

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Section: Resistance To Sulphuric Acid Attacksupporting

confidence: 92%

Properties and durability of HPC with tyre rubber wastes

Azevedo

Pacheco-Torgal

Jesus

et al. 2012

Construction and Building Materials

184

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“…Mass loss is a simple traditional test in the context of acid attack. However, mass change results may depend on sample size and cement type, and are also influenced by the way the decomposed cement paste and other reaction products on samples are treated during testing [42,43]. Therefore, along with mass loss test, compressive strength is considered to be a more reliable measure to judge the performance of mortar/concrete subjected to acid attack.…”

Section: Compressive Strength Loss (Csl%)mentioning

confidence: 99%

Studies on Chemical Resistance of PET-Mortar Composites: Microstructure and Phase Composition Changes

Benosman¹,

Mohamed²,

Taïbi³

et al. 2013

ENG

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Researches into new and innovative uses of waste plastic materials are continuously advancing. These research efforts try to match society's need for safe and economic disposal of waste materials. The use of recycled plastic aggregates saves natural resources and dumping spaces, and helps to maintain a clean environment. The present articles deals with the resistance to chemical attack of polymer-mortars, which are often used as low-cost promising materials for preventing or repairing various reinforced concrete structures. To gain more knowledge on the efficiency of polymer-mortar composites, four mortar mixtures: one specimen with Portland cement and three mixtures with 2.5, 5, and 7.5 wt% of the substitution of cement by polyethylene terephthalate (PET) were exposed to the influence of aggressive environment (0.5%, 1% and 1.5% HCl acids, 10% NH 4 Cl, 5% H 2 SO 4 acid and 10% (NH 4) 2 SO 4 solutions). The measurements of several properties were carried out, the results were analyzed and the combination of X-ray diffraction, FT-IR spectroscopy, differential thermal analysis (DTA), thermogravimetric (TG) analysis, differential scanning calorimetry (DSC) analysis and the composites were also observed by SEM led to the positive identification of the deterioration products' formation. From this study, it was found that the addition of PET to the modified mortars, means reducing the penetration of aggressive agents. So, the PET-modified mortars exposed to aggressive environments showed better resistance to chemical attack. The new composites appear to offer an attractive low-cost material with consistent properties. The present study highlights the capabilities of the different methods for the analysis of composites and opened new way for the recycling of PET in polymer-mortars.

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“…These concentrations have been taken from existing literatures [29,30]. The solutions of acids were prepared by mixing concentrated acids with a predetermined amount of tap water.…”

Section: Strength and Mass Lossmentioning

confidence: 99%

Behaviour of a Sustainable Concrete in Acidic Environment

Barbhuiya

Kumala

2017

Sustainability

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Sustainability has become one of the most important considerations in building design and construction in recent years. Concrete is susceptible to acid attack because of its alkaline nature. The socioeconomic losses associated with infrastructure deterioration due to acid attack exceed billions of dollars all around the world. An experimental investigation was carried out to study the behaviour of sustainable concrete in 3% sulphuric acid and 1.5% nitric acid environment in which cement was replaced by a combination of fly ash and ultra fine fly ash. It was found that the compressive strength loss of concrete in these acid environments was the minimum in which cement was replaced by 30% fly ash and 10% ultra fine fly ash. This mix also showed the lowest mass loss when exposed to these acids.

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Resistance of Mineral Admixture Concrete to Acid Attack

Cited by 56 publications

References 23 publications

Properties and durability of HPC with tyre rubber wastes

Properties and durability of HPC with tyre rubber wastes

Studies on Chemical Resistance of PET-Mortar Composites: Microstructure and Phase Composition Changes

Behaviour of a Sustainable Concrete in Acidic Environment

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