Influence of silica fume, metakaolin &amp; SBR latex on strength and durability performance of pervious concrete

Bilal, Hassan; Chen, Tiefeng; Ren, Miao; Gao, Xiaojian; Su, Anshuang

doi:10.1016/j.conbuildmat.2020.122124

Cited by 105 publications

(42 citation statements)

References 45 publications

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“…In Figure 6 b, the blended paste M6(C92.5M7.5) with 7.5% MK added exhibited compressive strength equivalent to that of the pure cement paste C1(C100) at various ages. Previous studies have also shown that LS and MK have a synergic effect, and LS can interact chemically with aluminate [ 27 , 41 ]. The compressive strength of L3(C80L5M15) blended paste at 3, 7, and 28 days was slightly higher than that of C1(C100) paste.…”

Section: Resultsmentioning

confidence: 99%

Hydration–Strength–Workability–Durability of Binary, Ternary, and Quaternary Composite Pastes

Han

Wang

et al. 2021

Materials

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At present, reducing carbon emissions is an urgent problem that needs to be solved in the cement industry. This study used three mineral admixtures materials: limestone powder (0–10%), metakaolin (0–15%), and fly ash (0–30%). Binary, ternary, and quaternary pastes were prepared, and the specimens’ workability, compressive strength, ultrasonic pulse speed, surface resistivity, and the heat of hydration were studied; X-ray diffraction and attenuated total reflection Fourier transform infrared tests were conducted. In addition, the influence of supplementary cementitious materials on the compressive strength and durability of the blended paste and the sustainable development of the quaternary-blended paste was analyzed. The experimental results are summarized as follows: (1) metakaolin can reduce the workability of cement paste; (2) the addition of alternative materials can promote cement hydration and help improve long-term compressive strength; (3) surface resistivity tests show that adding alternative materials can increase the value of surface resistivity; (4) the quaternary-blended paste can greatly reduce the accumulated heat of hydration; (5) increasing the amount of supplementary cementitious materials can effectively reduce carbon emissions compared with pure cement paste. In summary, the quaternary-blended paste has great advantages in terms of durability and sustainability and has good development prospects.

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Section: Resultsmentioning

confidence: 99%

Hydration–Strength–Workability–Durability of Binary, Ternary, and Quaternary Composite Pastes

Han

Wang

et al. 2021

Materials

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Section: Compressive and Flexural Strength Before Immersion In Sulfate Solutionmentioning

confidence: 88%

“…Moreover, Figure 4 shows, when taking 28-days compressive strength, the optimal content of NS was about 0.5 wt.% regardless the PVA fibers content. When compared to the mortars only containing PVA fibers, the adding of 0.5 wt.% NS increased the compressive strength by 67.1~118.2%, which may be caused by the crystal nucleus and pore-filling effects of NS as pointed out by authors [30,31]. This paper also investigated the curing age on the combined effect of NS and 1.0 vol.% PVA fibers on the flexural and compressive strength of cement mortar, and the results are shown in Figure 5.…”

Section: Compressive and Flexural Strength Before Immersion In Sulfate Solutionmentioning

confidence: 90%

Effect of Nano-SiO2/PVA Fiber on Sulfate Resistance of Cement Mortar Containing High-Volume Fly Ash

Huang

Wang

et al. 2022

Nanomaterials

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Sulfate resistance of high-volume fly ash/cement mortars hybrid containing 0~1.5 wt.% of nano-silica (Nano-SiO2, NS) and 0~1.0 vol.% of polyvinyl alcohol (PVA) fibers was investigated in this study. Fly ash was replaced with Portland cement at levels of 60% by weight. The resistance to sulfate attack was investigated by exposing the mortars to 10 wt.% sodium sulfate (Na2SO4) solutions for 72 days, after which change in mass, compressive, and flexural strengths were determined. For comparison, the compressive and flexural strengths of cement mortar after 100 days of curing in water were also investigated. Microstructural deteriorations caused by sulfate attack were analyzed by using scanning electron microscope (SEM). The test results showed that the combination of NS and PVA fibers was effective in enhancing the mechanical properties and the resistance to sulfate attack. After 28 days curing, the hybrid addition of 1.5 wt.% NS and 1.0 vol.% PVA fibers increased the flexural strength by 90% over the control one without NS and PVA fiber. Moreover, regardless of PVA fibers content, due to the crystal nucleus and pore-filling effects, the adding of 0.5 wt.% NS increased the compressive strength by 67.1~118.2%. Chemical reaction took place between fly ash and Na2SO4 as no un-hydration particles could be observed in the samples immersed in Na2SO4 solutions for 72 days, while a lot of un-hydration fly ash particles could be found in the SEM image of mortar after 100 days curing in water. The chemical reaction production could increase the adhesive property and fill the pores of cement mortar. As a result, the compressive and flexural strengths of cement mortars after immersed in Na2SO4 solution for 72 days, were much higher than that after 28 days curing. Moreover, the compressive strength of mortars incorporating 1.0~1.5 wt.% NS was even higher than that after 100 days curing in water, indicating the combination of Nano-SiO2/PVA fiber is effective in enhancing the resistance to sulfate attack.

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“…Some studies have focused on partially replacing cement with industrial wastes, i.e., supplementary cementitious materials (SCM) [6]. Other studies have completely replaced cement with alkali-activated inorganic binders in single, binary, or ternary geopolymers [21]. Similarly, artificial and recycled aggregates (RA) have also been investigated in the partial and complete replacement of NA in PC [6].…”

Section: Introductionmentioning

confidence: 99%

Meta-Analysis of the Performance of Pervious Concrete with Cement and Aggregate Replacements

et al. 2022

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In recent years, pervious concrete (PC) has gained much attention as one of the strategies for low-impact development (LID) in pavements due to its structural, economic, and road-user benefits. This study sought to review and evaluate changes in the mechanical, hydraulic, and durability performance of PC produced with cement and aggregate replacements. A meta-analysis was conducted to elucidate the feasible range of the replacement percentage and the number of materials that could be used to replace cement and aggregates; single or binary replacements were considered. Results indicated that cement-replacing materials, industrial wastes (IWA), and recycled aggregates (RA) met the minimum requirement for the mechanical, hydraulic, and durability properties of PC. The use of a single cement replacement material provided PC with better performance than when cement was replaced with two or more materials or when cement alone was used. Industrial waste was found to be a better replacement to aggregates than RA. The combined replacement of cement and aggregates with IWA and other cement-replacing materials was the most effective method for improving the mechanical, hydraulic, and durability performance of PC. Replacements of up to 40% was considered viable for cement replacement, while up to 50% replacement was considered practical for aggregate and combined replacement. PC incorporating different cement-replacing materials exhibited equivalent or improved mechanical properties and maintained hydraulic performance compared to cement-based PC. Nonetheless, limited studies are available on the durability performance of PC made with cement and/or replacements. Thus, the durability of PC coupled with the applicability of replacement materials acquired from different locations need to be evaluated to address the viability of producing more durable PC with the use of replacements.

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Influence of silica fume, metakaolin & SBR latex on strength and durability performance of pervious concrete

Cited by 105 publications

References 45 publications

Hydration–Strength–Workability–Durability of Binary, Ternary, and Quaternary Composite Pastes

Hydration–Strength–Workability–Durability of Binary, Ternary, and Quaternary Composite Pastes

Effect of Nano-SiO2/PVA Fiber on Sulfate Resistance of Cement Mortar Containing High-Volume Fly Ash

Meta-Analysis of the Performance of Pervious Concrete with Cement and Aggregate Replacements

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