An investigation into the feasibility of formulating ‘self-cure’ concrete

Dhir, Ravindra K.; Hewlett, P. C.; Lota, J. S.; Dyer, Tom

doi:10.1007/bf02473130

Cited by 61 publications

(28 citation statements)

References 2 publications

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“…A study on the effects of using a cocktail of microcapsules with different melting temperatures is currently under development. Dhir et al (1994) investigated the development of another new material also obtained through chemical intervention in the hydration process, which shows promising capabilities to control drying shrinkage. The concept involves tailoring the concrete composite by adding water-soluble chemicals during mixing to reduce water evaporation as the concrete is exposed to air-drying.…”

Section: Smart Materials For Preventing Shrinkage Crackingmentioning

confidence: 99%

State-of-the-Art Report on Control of Cracking in Early Age Concrete

Mihashi

Leite

2004

ACT

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AbstractsDurability of concrete structures is seriously compromised by cracking in early age concrete, particularly in high-strength or massive concrete structures. Since early age cracking is influenced by various highly interrelated factors that affect the hydration process and stress/strain development, its behavior is highly complex and no rational methodologies for its control have yet been established. On the other hand, demands for high strength and massive concrete structures in modern cities are ever growing, regardless of the many durability problems. More comprehensive methodologies for the control are therefore essential to ensure sustainability of such structures. This report reviews state-of-the-art research on mechanisms that cause complex cracking phenomena and newly developed methodologies to control early age cracking.

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Section: Smart Materials For Preventing Shrinkage Crackingmentioning

confidence: 99%

State-of-the-Art Report on Control of Cracking in Early Age Concrete

Mihashi

Leite

2004

ACT

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“…Dhir et al (1994Dhir et al ( , 1995 studied the strength and durability performance of self-curing concrete using hydrophilic chemicals. Adding hydrophilic chemicals to the water when mixing water with concrete will reduce water evaporation as the concrete is exposed to air-drying (Dhir et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Paraffin wax as an internal curing agent in ordinary concrete

Madduru

Giri

Kumar

et al. 2015

Magazine of Concrete Research

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Curing of concrete involves maintaining satisfactory moisture content during early stages to develop the desired properties. Properly cured concrete has improved durability and surface hardness, and is less permeable. Prevention of loss of moisture is important not only for strength development but also to prevent plastic shrinkage, for decreased permeability and to improve resistance to abrasion. Good and complete curing is not always practical for several reasons, particularly in higher grade concretes. Using self-curing agents can solve this problem. The concept of self-curing agents is to reduce water evaporation from concrete, and hence increase its water retention capacity compared to conventional curing. Several materials, including polymeric glycol and paraffin wax, can act as selfcuring compounds. This study investigates the role of paraffin wax as a self-curing agent and compares this with the effect of different curing regimes simulating traditional methods of curing. The parameters include grade of concrete, type and dosage of paraffin wax, curing conditions and age of curing. Weight loss and compressive strength are determined as a performance benchmark for the investigated curing compounds. It is found that the lower dosage (0 . 1%) liquid paraffin wax compounds act as the best curing compounds in higher grade concretes.

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“…The strength and durability of concrete will be developed only if it is cured as soon as required [l]. Curing methods involve either the introduction of water after placing or the reduction in the rate of evaporation from the surface [2]. An interna!…”

Section: Introductionmentioning

confidence: 99%

“…An interna! curing "IC" system could be created by the introduction of a chemical curing agent du ring the mixing to reduce water evaporation in the concrete and make it effectively self-curing [3,2]. A feasibility of curing concrete by adding water-soluble chemicals during mixing that reduce water evaporation during setting and hardening of the concrete, making it self-curing, was discussed by several researchers [4,3,5,6].…”

Section: Introductionmentioning

confidence: 99%

“…IC is particularly effective for the high performance concretes containing silica fume. In cement mortar containing a Type F (ASTM C494) fly ash, the fly ash functions mainly as a diluent at early ages and higher and coarser porosity at early ages result in less autogenous shrinkage [2,4,7,8]. Concrete durability is the ability to last a long time without significant deterioration.…”

Section: Introductionmentioning

confidence: 99%

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Self-Curing Concrete under Sulfate Attack

Bashandy

2016

Archives of Civil Engineering

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1Self-curing concrete SC is a concrete type that can be cured without using any external curing regimes. Tt can perform by several methods such as using lightweight aggregate or chemical agents. In this research chemical curing agent is used to produce SC. This paper reports the resuJts of a research study conducted to evaluate the effect of su I fates on the performance of se! f-curing concrete compared Io ord in ary concrete. Samples are immersed in sodium sui fate Na2S04 sol uti on of 4% concentration. Results are measured in terms of compressive strength, tensile strength, flexural strength and mass loss. It was found that the rate of strength loss is noticed at ordinary concrete compared to SC concrete. Sulfate resistance is improved when using self-curing concrete. This improvement appears to be dependent on using a chemical curing agent.

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An investigation into the feasibility of formulating ‘self-cure’ concrete

Cited by 61 publications

References 2 publications

State-of-the-Art Report on Control of Cracking in Early Age Concrete

State-of-the-Art Report on Control of Cracking in Early Age Concrete

Paraffin wax as an internal curing agent in ordinary concrete

Self-Curing Concrete under Sulfate Attack

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