Abstract The compressive strength of concrete is the mostly used criterion in producing concrete. Compressive strength of concrete is determined by destructive testing of control specimens in a Compression Testing Machine (CTM) but testing for these specimens is a complied and tedious task.
Get Pricecurve and compressive strength age curve from Table 4. Compressive strength replacement ratios curve . Compressive strength ages curve . Based on the curves above, three discussions were drawn: (1)The compressive strength of manufactured sand concrete was greater than natural sand concrete. This was mainly due to manufactured ...
Get Price· The Compressive strength of specimen can be calculated by dividing maximum load carried by the specimen by crosssectional area of the specimen cubes. The surface area of specimen: = 150 x 150 = 22500mm² = 225cm² Assume, The Max compression load is 450KN
Get Price· This study aims to develop a robust and timesaving method based on Machine Learning (ML) to predict the compressive strength of concrete containing binary SCMs at various ages. To do so, a database containing a mixture of design, physical, and chemical properties of pozzolan and age of specimens have been collected from literature.
Get Price· The results of the experiments were showed that in 5 % of SBR, compressive strength rises slightly, but when the polymer/binder materials ratio increases, compressive strength of concrete decreases. A mathematical model based on Abrams' law has been proposed for evaluation strength of SF–SBR concretes.
Get Price· The study presented in this paper aimed to experimentally investigate the residual compressive strength of firedamaged concrete columns retrofitted using carbon fibrereinforced polymer (CFRP) wrapping sheets.
Get PriceDOI: / Corpus ID: ; Einfluss der thermischen Behandlung auf die Festigkeiten von feinkörnigem ultrahochfestem Beton (UHPC/RPC) article{Rhau2018EinflussDT, title={Einfluss der thermischen Behandlung auf die Festigkeiten von feink{"o}rnigem ultrahochfestem Beton (UHPC/RPC)}, author={Marcel Rhau and Martina .
Get PriceThe results of the hardened properties of the mix 20% +% have shown that the concrete mix with proportion 40% +% of manufactured and natural sand achieved a higher 60% +% compressive strength almost at .
Get PriceAlthough FRP has an extensive list of appliions, it can be used to strengthen reinforced concrete structures and has been a material of interest in this regard for many decades. BACKGROUND Many research studies have been carried out on repair and strengthening structures using FRP sheets the and wraps in the last decade.
Get PriceThe average compressive strength of water cured concrete was /mm 2 and N/mm 2 at 7 and 28 days respectively. Sprinkling method produced compressive strength close to immersion (Water) method produced a compressive strength of /mm 2 and /mm 2 at 7 and 28 days respectively.
Get PriceThe compressive strength test was performed according to IS5160: 1959. Cube specimens of size 150mm × 150mm× 150mm were prepared for each mix. After one day of rest period, they were cured in oven for 12, 18 24 hours and were demoded and stored until the day of testing.
Get Price· Maturity method has been developed and used to predict the early age compressive strength of concrete. The test used curing temperature variation of insitu concrete samples to predict the strength. To do so, a strengthmaturity relationship should be established for the concrete mix in the first place. Existing Structures
Get Price· Experimental investigations of partial loading capacity with plane load distribution In partial loading concrete stresses are limited to the of the compressive strength. Especially in case of small loaded areas like wall supports or longitudinal joints of segmental tunnel linings this limitation often governs the design.
Get Price· This paper investigates the compressive strength of normalweight concrete under low temperatures to −165°C through a 174specimen test program. The key parameters studied in this test program included low temperature T ranging from −165 to +20°C, water/cement ratio ranging from to, and water content Wc ranging from 0 to 6%.
Get PriceThe maximum compressive strength of concrete with metakaolin depends on three parameters, namely the replacement level, water cement ratio and chemical admixture. The maximum 3, 7 and 28 days cube compressive strength of M35 grade with 12% of metakaolin was, and Mpa respectively.
Get Price· At present, many modifiion methods have been proposed to improve the performance of recycled aggregate concrete (RAC). In this study, tests on the compressive strength and damping properties of modified RAC with the addition of different proportions of recycled coarse aggregate (RCA) (0, 50, ), rubber powder (10, 15, 20%), steel fibre (5, .
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