Evaluation of cement soundness using the ASTM C151 autoclave expansion test

Kabir, Hossein; Hooton, R.D.; Popoff, N.J.

doi:10.1016/j.cemconres.2020.106159

Cited by 48 publications

(21 citation statements)

References 8 publications

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“…The space between indicator points is measured again after the device has cooled. This distance should not be greater than 10 mm in a good-quality cement [17].…”

Section: • Le-chatelier Testmentioning

confidence: 97%

“…After bringing the autoclave to room temperature and pressure gradually, the specimen's length change is measured and expressed as a percentage. A maximum DOI: http://dx.doi.org/10.5772/intechopen.100447 of 0.8 percent autoclave expansion is required for good-quality cement according to the American Society for Testing and Materials (ASTM) (Figure 1) [17].…”

Section: • Autoclave Testmentioning

confidence: 99%

See 1 more Smart Citation

Characterizations of Cement and Modern Sustainable Concrete Incorporating Different Waste Additives

Eid¹,

Saleh²

2022

Sustainability of Concrete With Synthetic and Recycled Aggregates

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This chapter provides a brief introduction to cement and concrete, from their first utilization in constructions and monuments in different civilizations to their development and use in modern times. It discusses the modern forms of these materials, their physical and chemical properties, and their various applications. The chapter also examines the sustainability of concrete mixed with different waste additives, which can impart desirable properties to concrete, as a promising way to reduce environmental hazards resulting from the landfilling of these wastes. In addition to environmental benefits, waste utilization has economic benefits as well.

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“…The space between indicator points is measured again after the device has cooled. This distance should not be greater than 10 mm in a good-quality cement [17].…”

Section: • Le-chatelier Testmentioning

confidence: 97%

Section: • Autoclave Testmentioning

confidence: 99%

Characterizations of Cement and Modern Sustainable Concrete Incorporating Different Waste Additives

Eid¹,

Saleh²

2022

Sustainability of Concrete With Synthetic and Recycled Aggregates

View full text Add to dashboard Cite

show abstract

“…In summary, if expansive concrete is restrained, extra compressive stress will be generated and porosity will decrease compared with that during free expansion. Obviously, suitable dosages of MgO should be determined for use in expansive concrete [67][68][69][70][71][72].…”

Section: Expansion Via Restrainingmentioning

confidence: 99%

Expansion Mechanism and Properties of Magnesium Oxide Expansive Hydraulic Cement for Engineering Applications

Feng

Yang

2021

Advances in Materials Science and Engineering

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The expansion mechanism of magnesium oxide expansive hydraulic cement as a novel expansive hydraulic cement was reviewed. Anisotropic crystallization results in crystal growth pressure, causing volume expansion while also increasing the porosity of the whole system. The theoretical relationship between porosity and expansion was analyzed. A basic method is given for predicting the expansion rate considering the expansive agent content in MgO expansive hydraulic cement. A concise equation is proposed for calculating the ultimate expansion. A theoretical relationship between porosity and expansion is presented. The compressive strength and durability of magnesium oxide expansive hydraulic cement were analyzed considering porosity changes and compared with hydraulic cement. If the expansion rate exceeds 0.8%, the mechanical properties and durability changes caused by porosity should be considered. If magnesium oxide expansive concrete is used with restraining in real structure, extra compressive stress is generated and the porosity decreases, compared with that during free expansion. In particular, for strain-hardening cementitious composites, expansion confined with the fibers present in the composite is beneficial for refining cracks and improving the self-healing ability of these materials whenever exposed to humid environments. This paper describes the expansion mechanism and properties of magnesium oxide expansive hydraulic cement for engineering applications.

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“…The application of nanotechnology for cementitious materials may help relieve limitations of current performance enhancing techniques, such as strength loss and durability deterioration at later ages [ 19 , 21 ]. Furthermore, in other concerning aspects, such as sulfate balance [ 22 ], soundness [ 23 ], and alkali-activated systems [ 24 ], the application potential of nanomaterials is also promising.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Hydration Acceleration Efficiency of Calcium Carbonate by Pre-Seeding with Calcium Silicate Hydrate

Yan¹,

Zhou

Yang³

et al. 2022

Materials

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Nanomaterials are promising candidates for refined performance optimization of cementitious materials. In recent years, numerous studies about the performance improvement of nanomaterials using polymers have been conducted, but the modification of cement-oriented nanomaterials with inorganic modifiers is seldom assessed. In this study, we explored the performance tuning and optimization of nanomaterials by inorganic modification. In this work, hydration acceleration efficiency of calcium carbonate (CaCO3, CC) was tuned via surface deposition with calcium silicate hydrate (C–S–H) nanogel through seeding. Multiple calcium carbonate–calcium silicate hydrate (CC–CSH) samples with varying degrees of surface modification were prepared via dosage control. According to characterizations, the degree of C–S–H modification on the CaCO3 surface has a maximum that is controlled by available surface space. Once the available space is depleted, excessive C–S–H turns into free form and causes adhesion between CC–CSH particles. The resultant CC–CSH samples in this work showed enhanced hydration acceleration efficiency that is tuned by the actual degree of C–S–H modification. Elevated C–S–H modification causes CC–CSH’s acceleration behavior to shift to enhanced early-age acceleration. According to mortar strength tests, CC–CSH with 5% C–S–H modification showed the most balanced performance, while CC–CSH with higher C–S–H modification showed faster early-age strength development at the cost of lower later-age strength. The inferior later-age strength of highly C–S–H-modified CC–CSH samples may be due to the coarsening of hydration products and stiffening of their network, as well as agglomeration caused by C–S–H adhesion. This study may offer a novel route for performance tuning of cement-oriented nanomaterials.

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Evaluation of cement soundness using the ASTM C151 autoclave expansion test

Cited by 48 publications

References 8 publications

Characterizations of Cement and Modern Sustainable Concrete Incorporating Different Waste Additives

Characterizations of Cement and Modern Sustainable Concrete Incorporating Different Waste Additives

Expansion Mechanism and Properties of Magnesium Oxide Expansive Hydraulic Cement for Engineering Applications

Tuning the Hydration Acceleration Efficiency of Calcium Carbonate by Pre-Seeding with Calcium Silicate Hydrate

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