Durability of manufactured sand concrete in atmospheric acidification environment

Zhang, Yuan‐Zhu; Gu, Luoyi; Zhang, Qianlu

doi:10.1016/j.cscm.2022.e01613

Cited by 12 publications

(8 citation statements)

References 20 publications

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“…For example, sulfate enters the interior of the concrete and reacts with the calcium ion to produce the expansion product gypsum, and the continuous accumulation of gypsum will cause the cracking and destruction of the concrete [ 41 ]. Carbon dioxide infiltrates porous concrete and becomes dissolved in capillary liquid to form carbonic acid [ 42 ]. Carbonic acid reacts with calcium hydroxide, thereby reducing the alkalinity of concrete [ 42 ].…”

Section: Research Status Of Concrete Corrosionmentioning

confidence: 99%

“…Carbon dioxide infiltrates porous concrete and becomes dissolved in capillary liquid to form carbonic acid [ 42 ]. Carbonic acid reacts with calcium hydroxide, thereby reducing the alkalinity of concrete [ 42 ]. Figure 2 a shows the cracking of concrete after chemical and physical corrosion in the coastal environment of Qingdao, China.…”

Section: Research Status Of Concrete Corrosionmentioning

confidence: 99%

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Review on Microbially Influenced Concrete Corrosion

et al. 2023

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Microbially influenced concrete corrosion (MICC) causes substantial financial losses to modern societies. Concrete corrosion with various environmental factors has been studied extensively over several decades. With the enhancement of public awareness on the environmental and economic impacts of microbial corrosion, MICC draws increasingly public attention. In this review, the roles of various microbial communities on MICC and corresponding protective measures against MICC are described. Also, the current status and research methodology of MICC are discussed. Thus, this review aims at providing insight into MICC and its mechanisms as well as the development of protection possibilities.

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Section: Research Status Of Concrete Corrosionmentioning

confidence: 99%

Section: Research Status Of Concrete Corrosionmentioning

confidence: 99%

Review on Microbially Influenced Concrete Corrosion

et al. 2023

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“…Polycarboxylate Superplasticizer (SP) is the third generation of high-performance water-reducing agents with a higher water reduction rate [1][2][3]. With the continuous development of the production process and technology of SP, the water-reducing agent macromonomers used in the market are mainly APEG, HPEG, TPEG, EPEG and VPEG as unsaturated alcohol starting agents macromonomers [4][5].…”

Section: Introductionmentioning

confidence: 99%

Study on sustained-release polycarboxylate superplasticizer prepared by EPEG macromonomer

Chen¹

2023

J. Phys.: Conf. Ser.

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Ethylene glycol monomer polyoxyethylene ether (EPEG) is a new macromonomer that has been introduced in recent years. Its special molecular structure enables it to form copolymers with acrylic acid (AA) that are closer to the ideal copolymerization structure. However, the current production capacity is relatively small, so there are not many related studies. Therefore, this paper uses EPEG as the main raw material to prepare a slow-release polycarboxylate superplasticizer SP-YH. By studying the effects of different reaction conditions on the properties of SP-YH, the optimum synthesis conditions were determined. The structure of the polymer was characterized by gel permeation chromatography (GPC) and infrared spectroscopy (FTIR). In addition, the concrete test and hydration heat test results show that it has better slump protection performance and compression resistance than the commercial slump protection polycarboxylic acid water reducer.

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“…Silica fume is a type of admixture that is commonly used as a cement replacement material and it is produced from the waste of ferrosilicon alloys [5]. It is a pozzolanic material that combines with Ca (OH)2 and creates C-S-H, it avoids the voids or pores between concrete and enhances the strength and durability due to proper packing [5,6]. The higher per cent of silicon dioxide in silica fume is the key factor of the binding property in concrete mixes and the particle size of silica fume is less than 1 micron.…”

Section: Introductionmentioning

confidence: 99%

Investigating the effect of Manufactured sand and Silica Fume on the properties of Concrete

Chowdary,

Mahajan,

Jaggi

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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In the present era, concrete is one of the most commonly used construction materials worldwide. Consequently, the demand for natural river sand is increasing. Since the mining of natural sand has already been outlawed by the government in many regions, now it is essential to look into sustainable materials to control natural sand extraction. Hence, manufactured sand (MS) has been shown in numerous studies to be a more practical and environmentally responsible alternative to river sand (RS), which is normally used in the production of concrete. At the same time, the cement industry produces tons of greenhouse gases into the atmosphere, affecting atmospheric conditions. Now, it’s time to look into a suitable replacement material for cement. To investigate the feasibility of using manufactured sand & silica fume in place of river sand and cement under normal climatic conditions fresh, mechanical and durability properties were conducted in the laboratory. Twelve samples of M30 grade cubes and cylinders at desired M sand percentages of 0, 20, 40, 60, 80, and 100 & 0% and 5% variation of silica fume with cement are included in this study as a comparison to the control mix. After 28 days of water curing, a random variation in the properties of concrete was observed in the samples. In this experimental study, SF represents Silica Fume, MS represents manufactured sand, RS represents river sand, FA represents Fine aggregates and CA represents Coarse aggregates.

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Durability of manufactured sand concrete in atmospheric acidification environment

Cited by 12 publications

References 20 publications

Review on Microbially Influenced Concrete Corrosion

Review on Microbially Influenced Concrete Corrosion

Study on sustained-release polycarboxylate superplasticizer prepared by EPEG macromonomer

Investigating the effect of Manufactured sand and Silica Fume on the properties of Concrete

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