Compressive strength prediction of nano-silica incorporated cement systems based on a multiscale approach

Rupasinghe, Madhuwanthi; Mendis, Priyan; Ngo, Tuan; Nguyen, Ngoc-Tuan; Sofi, Massoud

doi:10.1016/j.matdes.2016.11.058

Cited by 66 publications

(9 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This development in the compressive strength might be due to the nano-papyrus chemical reactivity and its pozzolanic nature, as is evident for its chemical composition in table 3. The more pozzolanic reaction occurs in the mix, the more strength-carrying (C-S-H) being formed, which eventually results in a higher total strength [27]. Such outcomes agree with the works of [28,29] who stated that the increment could be owing to the truth that the compounds of Calcium Hydroxide present in the lime solution react with the nanoparticles in their surface areas to procedure further (C-S-H) gel, thus raising the compressive strength.…”

Section: Results Of Mechanical Propertiesmentioning

confidence: 99%

Investigation of the Effect of Addition Nano-papyrus Cane on the Mechanical Properties of Concrete

et al. 2021

View full text Add to dashboard Cite

This paper investigates the effect of nano-papyrus cane ash as an additive on concretes’ mechanical and physical properties. Three types of concrete mixtures, 1:2:4, 1:1.5:3, and 1:1:2 were prepared for each mixture, nano-papyrus ash was added in five different dosages of 0.75, 1.5, 3, 4.5, and 6% by weight of cement; therefore, eighteen mixes would be studied in this work. Physical properties represented by dry density and slump were also measured for each mix. Moreover, to evaluate the mechanical properties development split tensile strength and compressive strength were obtained at age (7 and 28). Results manifested that the adding of nano ash developed the compressive strength and split tensile strength of concrete and the maximum enhancement recognized in the mixes with a content of 4.5% nano-papyrus in each studied mixture in this work. The slump test results indicated that the workability of concrete increased with adding nano-papyrus ash gradually with increasing nanoparticles' content. As well as, dry density was significant increased with nano-papyrus ratio; greater values were recorded in mixtures with 1.5-4.5% content of nano-papyrus. When comparing the concrete mixes used, it was found that the best results were obtained with 1:1:2 mixtures. This remarkable improvement in concrete properties considers the nano-papyrus is considered a cement economical and useful replacement for traditional construction material. Doi: 10.28991/cej-2021-03091649 Full Text: PDF

show abstract

Section: Results Of Mechanical Propertiesmentioning

confidence: 99%

Investigation of the Effect of Addition Nano-papyrus Cane on the Mechanical Properties of Concrete

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, the addition of nanomaterials accelerates the hydration process and enhances the formation of C–S–H gel (as marked by yellow hexagons), which makes the microstructure denser, thereby increasing the strength and durability of the treated sample. However, non-uniform dispersion or excessive addition of nanomaterials (beyond an optimum dosage) leads to agglomeration and formation of weak bonds in the mortar sample [ 77 , 148 , 149 , 150 ]. Ling et al [ 13 ] observed that the inclusion of nano-silica in the mortar reduces the pores, concentrates the matrix, and enhances the strength of cementitious composites by improving the adhesion of the hydration products with the PVA fibers.…”

Section: Properties and Methodsmentioning

confidence: 99%

Comparative Overview of the Performance of Cementitious and Non-Cementitious Nanomaterials in Mortar at Normal and Elevated Temperatures

et al. 2021

View full text Add to dashboard Cite

Nanotechnology has emerged as a field with promising applications in building materials. Nanotechnology-based mortars are examples of such building materials that have widespread applications in the construction industry. The main nanomaterials used in mortars include nano-silica, nano-magnesium oxide, nano-alumina, nano-titanium oxide, nano-zinc oxide, nano-clay, and nano-carbon. This review paper presents a summary of the properties and effects of these nanomaterials on cement mortar in terms of its fresh-state and hard-state properties. The fresh-state properties include the setting time, consistency, and workability, while the hard-state properties include mechanical properties such as compressive, flexural, tensile strengths, as well as the elasticity modulus, in addition to durability properties such as water absorption, shrinkage strain, strength loss due to freeze–thaw cycles, and chloride penetration, among others. Different nanomaterials cause different physical and chemical alterations within the microstructures of cement mortar. Therefore, the microstructural characterization and densification of mortar are discussed in detail at varying temperatures. In general, the involvement of nanomaterials in cement mortar influences the fresh-state properties, enhances the mechanical properties, and impacts the durability properties, while reducing the porosity present in the mortar matrix. Cementitious nanomaterials can create a pathway for the easy injection of binding materials into the internal microstructures of a hydration gel to impact the hydration process at different rates, whereas their non-cementitious counterparts can act as fillers. Furthermore, the research gaps and future outlook regarding the application of nanomaterials in mortar are discussed.

show abstract

“…erefore, the evaluation of the application effect is mainly focused on the mechanical properties of cement paste with TPR addition. e compressive strength is the maximum external force that a cement sample can bear when it is destroyed [26]. Cement stone requires good compressive strength to support and protect casing.…”

Section: Application Effect Of Tpr Particles Modified By Different Simentioning

confidence: 99%

Thermoplastic Rubber (TPR) Modified by a Silane Coupling Agent and Its Influence on the Mechanical Properties of Oil Well Cement Pastes

Song

Liu

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

The surface hydrophilicity of thermoplastic rubber (TPR) is poor, and the effect of using it directly in oil well cement is not good. TPR was modified by different silane coupling agents, and the hydrophilicity of the modified TPR was studied by Fourier-transform infrared (FT-IR) spectroscopy and dispersion stability photography. The application effect of modified TPR in oil well cement slurry was also evaluated. The fracture surface morphology of TPR cement stone was observed by macrophotography and scanning electron microscopy (SEM). The results demonstrated that the hydrophilicity of TPR particles was improved after modification with silane coupling agent 3-methacryloxypropyltrimethoxysilane (KH570), and its application effect in cement slurry was excellent. Compared with the pure cement paste, the compressive strength of the cement paste with addition of TPR modified by KH570 was reduced, but the flexural strength and impact strength of the cement paste were effectively enhanced. Moreover, the modified TPR greatly improved the deformation capacity and decreased the elastic modulus of the cement paste. The modified TPR particles formed a plastic polymer network structure in the cement stone and penetrated the cement hydration products, filling in the cement paste to form a flexible structural center. Thus, it improved the mechanical properties and reduced the brittleness of cement paste.

show abstract

Compressive strength prediction of nano-silica incorporated cement systems based on a multiscale approach

Cited by 66 publications

References 42 publications

Investigation of the Effect of Addition Nano-papyrus Cane on the Mechanical Properties of Concrete

Investigation of the Effect of Addition Nano-papyrus Cane on the Mechanical Properties of Concrete

Comparative Overview of the Performance of Cementitious and Non-Cementitious Nanomaterials in Mortar at Normal and Elevated Temperatures

Thermoplastic Rubber (TPR) Modified by a Silane Coupling Agent and Its Influence on the Mechanical Properties of Oil Well Cement Pastes

Contact Info

Product

Resources

About