Multi-scale study on mechanical property and strength prediction of aeolian sand concrete

Li, Yugen; Zhang, Huimei; Lu, Guangxiu; Hu, Dawei; Ma, Xiangrong

doi:10.1016/j.conbuildmat.2020.118538

Cited by 59 publications

(21 citation statements)

References 24 publications

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“…Filling, micro-rolling beads, and heterogeneous nucleation effects of IS can improve the particle size distribution of the cementitious material system, thereby optimizing the spatial structure of the cementitious system of the hydration products [ 36 , 37 ]. Meanwhile, those effects of IS can release filling water to further promote hydration, so that the compressive strengths of DMS and WMS can reach the design requirements in the absence of the active effect of M-S powder [ 38 , 39 ].…”

Section: Resultsmentioning

confidence: 99%

Properties of Slurry Shield Tunnel Sand and Its Application in Large Flow Concrete

et al. 2022

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The amount of Slurry shield tunnel slag (SSTS) from the Beijing East Sixth Ring Road renovation project is about 3 million m3, and it is mainly fine and silt sand. In order to realize its resource utilization, the properties of SSTS and the performance of concrete with strength grades from C30-C60, which used the mixed sand compound with SSTS and Coarse Manufactured Sand (CMS) as a fine aggregate, were investigated. The results showed that SSTS’ fineness modulus is 1.2, its clay content is 17.0% but its composition is mainly Inert Silt (IS), and SSTS replaced with 40% of the mass of CMS can obtain a mixed sand with a fineness modulus of 2.7 and a clay content of 7.0%. The morphological and filling effects of SSTS and IS will improve the workability and durability properties of concrete with no adverse effects on the compressive strength. On the other hand, clay lumps in SSTS adversely affect the workability, early cracking properties, and freeze resistance of concrete, which can be alleviated by dewatering and crushing the clay lumps in SSTS.

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Section: Resultsmentioning

confidence: 99%

Properties of Slurry Shield Tunnel Sand and Its Application in Large Flow Concrete

et al. 2022

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“…The size of the standard sample differs from that of the test sample, so is the strength. The scale effect of rock-like materials was used to estimate the UCS of the test sample based on that of the standard sample [87][88][89][90][91][92][93].…”

Section: Detection Results Of Vibration Frequency Of Steel Barmentioning

confidence: 99%

New non-destructive method for testing the strength of cement mortar material based on vibration frequency of steel bar: Theory and experiment

Shi

Song

Chen

et al. 2020

Construction and Building Materials

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“…to faster and durable construction of various civil engineering structures [1,2]. From the previous studies, it can be noted that concrete strength depends upon the water-cement ratio and the materials used that are used other than the conventional materials such as cement, fine aggregate, coarse aggregate, and water [3]. The manufacturing of high strength concrete is somewhat different from conventional concrete preparation by means of using additional materials such as mineral and chemical admixtures and using of techniques like re-vibration and seeding [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the permeability of high strength concrete using metakaolin and wood ash as partial replacement for cement

Kannan¹,

Priya²

2021

SN Appl. Sci.

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The present study is aimed to develop a high strength concrete by using mineral admixtures of wood ash (WA), metakaolin (MK), and chemical admixture. In order to check the compatibility, physical and chemical properties of the materials are studied. The specific gravity, bulk density and fineness of the ordinary Portland cement, wood ash and metakaolin have been studied. When compare to other materials, metakaolin has a more fineness and it implies the more reactivity than the wood ash. Similarly, the physical properties of the fine aggregate and coarse aggregates are also studies. And compressive strength, water absorption test, rapid chloride penetration test is also conducted. From the test report, it can be noted that the maximum compressive strength is achieved 83 N/mm2 in 10% WA + 20% MK blended concrete. The lowest water absorption and chloride permeability were obtained as 2.5% and 348 C respectively in 10% WA + 20% MK blended concrete. At the end of the experimental works, all obtained results were correlated with each other. The water absorption is well correlated with compressive strength (R2 = 84.9%) and charge passed (R2 = 91.5%). Finally, the cost analysis was carried out to understand the cost benefits of using the wood ash and metakaolin in high strength concrete.

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Multi-scale study on mechanical property and strength prediction of aeolian sand concrete

Cited by 59 publications

References 24 publications

Properties of Slurry Shield Tunnel Sand and Its Application in Large Flow Concrete

Properties of Slurry Shield Tunnel Sand and Its Application in Large Flow Concrete

New non-destructive method for testing the strength of cement mortar material based on vibration frequency of steel bar: Theory and experiment

Evaluation of the permeability of high strength concrete using metakaolin and wood ash as partial replacement for cement

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