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In order to assessing the durability of concrete using granulated blastfurnace slag (GBS) as fine aggregate and compare it with natural river sand concrete, three different size of specimen were produced by using the same mix proportion with 3 different water cement ratios and 3 replacement ratios, and using it to measure the three aspects on the d...
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Context 1
... order to investigating the influence of different water cement ratio(W/C) and different replacement of sand ratio on the durability of GBS concrete, three different W/C of 0.5, 0.30, 0.25 are mainly and three different replacement ratios of 0%, 50% and 100% used in this experiment. Concrete mixture ratio is presented in Table 2. In this experiment, according to "GB/T50082-2009", freeze-thaw performance and anti-chloride-permeability performance of GBS concrete of 28 days age were tested respectively. ...
Similar publications
The European concrete standard EN 206 introduces the k-value concept as one of the three methods allowing the use of granulated blast furnace slag in the design of the freeze-thaw-resistant concrete mix. It is assumed that the freeze-thaw durability of the concrete, whose composition (w/c ratio) has been corrected by adopting a certain k-value, is...
h i g h l i g h t s The stone power of MS is most significant factor on the performance of MS concretes. The gradation of the MS does not have a negative character on concrete. The MS concrete has narrower and denser ITZ than that of RS. There is no obvious element enrichment at the micro scale of the MS concrete paste. a b s t r a c t Manufactured...
Citations
... Our group found that Compared with ordinary concrete, the splitting tensile strength and elastic modulus of GBFS fine aggregate concrete are similar to those of ordinary concrete. In terms of durability, using GBFS as fine aggregate can slightly improve anti-chloridepermeability performance and dry-shrinkage performance of concrete in the condition of low water cement ratio [30,31]. There is no relevant research on using GBFS as fine aggregate of HPCB materials. ...
This study investigates the feasibility of using granulated blast furnace slag (GBFS) as fine aggregates for high-performance cement-based (HPCB) materials. The mixture ratio of HPCB materials using GBFS as fine aggregates is calculated based on the dense packing theory of aggregates and the minimum water requirement. A series of cement-based material mixes are prepared with three water binder ratios (0.16, 0.18, and 0.2) and three GBFS replacement ratios (0%, 50%, and 100%). Various properties of the cement-based materials, such as the compressive strength, flexural strength, splitting tensile strength, and elastic modulus, are studied. The research on the selected HPCB material compositions using scanning electronic microscopy (SEM), hardened concrete pore structure determination (HCPD), and mercury intrusion porosimetry (MIP) enables a further understanding of the relationship between the mechanical properties and microstructures. The test results show that it is feasible to produce HPCB materials using GBFS as fine aggregates. Despite its large crushing value index and irregular particle shape, GBFS has hydraulic properties that can make up for these disadvantages. GBFS and mixed fine aggregate cement-based materials with good properties can be prepared with a reasonable mix design. The strength of such cement-based materials is consistent with that of ordinary quartz sand (QS) fine aggregate cement-based materials. The compressive, flexural, and splitting tensile strengths of GBFS and mixed fine aggregate cement-based materials may be higher than those of ordinary QS fine aggregate HPCB materials. The relationship between the compressive strength and porosity is in agreement with the formulas proposed by Powers, Ryshkevitch, Schiller, and Hasselman.
... On the other hand, the non-ground blast furnace slag or GBFS has also been used as a replacement of natural fine aggregate in several past works. It has been witnessed from those works that GBFS enhances the durability properties of concrete (Bernal et al., 2012;Patra & Mukharjee, 2017;Shi et al., 2018;Yuksel & Genç, 2007). Notably, Patra & Mukharjee (2017) have investigated the effect of GBFS on the strength of concrete by using it as alternative of natural fine aggregate. ...
... These results indicate that there is comparatively less strength loss at 50% GBFS level than at higher percentages of GBFS (75% and 100%). Similar decreasing trend in compressive strength of normal concrete has been reported in previous study when NFA is replaced by GBFS (Bernal et al., 2012;Shi et al., 2018;Yuksel & Genc¸, 2007). However, in a study (Patra & Mukharjee, 2017), reverse trend has been observed i.e. the strength has been found to increase with the increase in GBFS content, which could be attributed to the reduction in w/b ratio as GBFS has not been used in its SSD condition. ...
This manuscript explores the effect of ternary blend i.e. the replacements of cement, fine aggregate and coarse aggregate simultaneously with ground granulated blast furnace slag (GGBFS) and lime, granulated blast furnace slag (GBFS) and recycled coarse aggregate (RCA), respectively, on the fresh, mechanical and durability properties of concrete. Twenty-one concrete mixes having various combinations of GGBFS, lime, GBFS and RCA are prepared and characterized. Results conclude that the concrete mixes containing high volumes of RCA (up to 75%) and GBFS (up to 50%) with 60% GGBFS and 6% hydrated lime, achieve the compressive strength closer to that specified for M25 grade concrete and more than that specified for M20 grade concrete as per IS:10262 (2009). The splitting tensile, flexural and bond strengths show satisfactory performances. Durability results show that these mixes have comparable or better sulphuric acid resistance and chloride ion ingress. Also, these mixes have good cost benefit and very less environmental impact as compared to the normal concrete. Moreover, these concrete mixes save cement up to 66%, fine aggregate up to 50% and coarse aggregate up to 75% and lessen the waste disposal crisis to a greater extent which make these mixes as sustainable concrete mixes.
