Influence of curing system on static and dynamic mechanical properties of fly ash concrete

Xu, Yangsheng; Chen, Yangjie; Chen, Qianshi; Chu, Huaqiang; Zu, Huajun; Jiang, Sheng; Jiang, Peng; Mao, Juntao

doi:10.1016/j.conbuildmat.2023.130714

Cited by 10 publications

(1 citation statement)

References 28 publications

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“…Closest to the technical result and taken as a prototype is a method of preparing ash concrete, obtained by mixing Portland cement, ash, sand, crushed stone, and water. All components of the concrete mixture are simultaneously introduced into the concrete mixer and mixed until homogeneous 19) . For the experiment, samples were molded with a size of 7x7x7 cm, and the composition: C: T = 1:3, ash -10% by weight of cement, the addition of liquid glass -3% by weight of cement, water -the rest.…”

Section: Methodsmentioning

confidence: 99%

Properties of Fine-Grained Concrete Using Ash of Kazakhstan

Zhakypova,

Uderbayev,

Saktaganova

et al. 2023

Evergreen

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The aim of the work is a study of the physical and mechanical properties of finegrained concrete using ash of Kazakhstan (namely: the influence of dispersion of hydro-removal ash and liquid glass additives on the properties of fine-grained concrete). This study aims to address the issue of improving the environmental impact, which ensures the quality of concrete by saving cement. It was established that ash in concrete contributed to the formation of a denser structure of the intergranular space of aggregates and a less defective contact zone of aggregates with cement stone. The analysis of the obtained results showed that ash-cement concretes hardened slowly under natural conditions. In the period of 7-14 days of hardening, as a rule, the strength of samples of fine-grained concrete with the addition of hydroremoval ash is lower than the strength of reference samples without ash. The increase in the strength of the samples in the period of 60 days was 6.6...7.0%, and in the period of 90 days -15.0...15.5% compared to the strength of 28 days. The experiments on ash absorption of CaO hydro removal from lime mortar were carried out. The degree of hydration in the ash-cement stone of the studied composition of the developed binder was determined. Research has shown that with a decrease in the concentration of calcium hydroxide in the liquid phase, the activity of the ash increases. This can be explained by the high content of the glass phase. The balance of hydrate neoplasms in the ash-cement binder was experimentally determined. The research results indicate the possibility of using ash in the production of crushed stone concrete as part of the following building materials: dense wall blocks, curbs, paving slabs, for pouring floors, for sound insulation, as a brick mortar.

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Section: Methodsmentioning

confidence: 99%