@article{osti_590119, title = {The fracture characteristics of crushed limestone sand concrete}, author = {Kim, J K and Lee, C S and Park, C K and Eo, S H}, abstractNote = {The use of crushed sand as a fine aggregate has rapidly increased due to a shortage of river sand. Accordingly, research on crushed sand concrete is required. In this research, the fracture characteristics of crushed ...
اقرأ أكثرAchieving low permeability in concrete property is an important requirement for safety-related nuclear reprocessing plant structures. Towards this need, in view of the scarcity of river sand, M50 grade crushed sand (CS) aggregate concrete …
اقرأ أكثرgates used for concrete preparation can be natural sand (NS), crushed stone sand (CS), or crushed gravel sand. In this study, SCC mixtures with NS and CS were used. Due to the wide-ranging applications of concrete, the thermal prop-erties of the concrete play an important role in the service-ability of concrete.
اقرأ أكثرA total of 100 samples of natural silica sand and 100 samples of crushed sand were collected from the stock-piles of different ready mixed-concrete plants in Riyadh. Also, the effects of silica and crushed sands (using different values of sand equivalent and passing No. 200 sieve) on water demands of mortar were investigated.
اقرأ أكثرAdams Joe, AM, A Maria Rajesh, P Brightson and M Prem Anand. "Experimental investigation on the effect of M. sand in high-performance concrete." American J Eng Research (2013): 46. Karan Verma, PP. "Effects of partial replacement of natural sand with crushed sand along with supplementary cementing materials fly Ash and GGBS." (2015).
اقرأ أكثرthe concrete cone status for different water cement ratios and recorded the values for normal concrete. Then the same procedure is performed with sand being completely replaced by the concrete with river sand, M-Sand and Quarry Dust Sand. Fig.4.1 True Slump Fig.4.2 Shear Slump Fig.4.3 Collapse Slump
اقرأ أكثرwill come when M sand will play a significant role as an ingredient in concrete production. M sand characteristics: When rock is crushed and sized in quarry the main aim has generally been to produce course aggregate and road construction materials. M sand is defined as a purpose made crushed fine aggregate produced from suitable source materials.
اقرأ أكثرThe use of rubber waste in crushed sand concrete contributes to reduce the bulk density and performance of sand concrete. Nevertheless, the use of rubber aggregate leads to a significant reduction in thermal conductivity, which improves the thermal insulation of crushed sand concrete. Published in MATEC Web of Conferences ISSN 2261-236X (Online)
اقرأ أكثرA Comparative Study of the Methods of Concrete Mix Design Using Crushed and Uncrushed Coarse Aggregates . ... dredged sand, obtained from one of the building ... International Journal of Scientific & Engineering Research, Volume 6, Issue 8, August-2015 1184 ...
اقرأ أكثرThe crushed limestone sand is an abundant material in Tunisia, which induces many environmental problems. Indeed, available stocks of siliceous sand drastically decrease because of its massive use in hydraulic concrete. Some recent research works, carried out in Tunisia, concluded that crushed limestone sand may be used in concrete manufacture instead of siliceous sand traditionally …
اقرأ أكثرAhmed, E. and El-Kourd, A. (1989) "Properties of Concrete Incorporating Natural and Crushed Stone Very Fine Sand," Materials Journal, American Concrete Institute, Vol. 86, No. 4, pp. 417-424. has been cited by the following article: Article. Influence of Crushed Coarse Aggregates on Properties of Concrete.
اقرأ أكثرThe test result indicates that crushed stone dust waste can be used effectively used to replace natural sand in concrete. In the experimental study of strength characteristics of concrete using crushed stone dust as fine aggregate it is found that there is increase in compressive strength, flexural strength and tensile strength of concrete.
اقرأ أكثرis research consists of incorporating the crushed sand (CS) in the composition of a concrete and studies the e ect of its gradual replacement by the sand dune (SD) on sustainability of high performance concrete (HPC) in aggressive environments.
اقرأ أكثرmaterials to replace sand. This study aimed to investigate the suitability of using crushed brick in concrete. Crushed brick originated from demolished masonry was crushed in the laboratory and added partial sand replacement. Three replacement levels, 15%,20% and 25%, were compared with the control.
اقرأ أكثرArtificial sand (Crushed sand): The crushed sand having fineness modulus of 2.84 and conforming to zone II as per IS: 383-1970 [5] was used for the experimentation after washing it with clean water. The specific gravity of this artificial sand was found to be 2.97. The water absorption and
اقرأ أكثرKourd A. A. ( 1989), 'Properties of concrete incorporating natural sand and crushed stone very fine sand', American Concrete Journal, 86 (4), 417-424. [14] Dan Ravina 'Fly Ash to Improve the Workability of Structure Concrete made with Crushed sand as Fine Aggregate', National Building Research Institute, Technion – Israel Institute of ...
اقرأ أكثرInternational Journal of Scientific and Research Publications, Volume 3, Issue 8, August 2013 2 ISSN 2250-3153 the workability of harsh mix. For the last about 4 to 5 years the old methods of manufacturing ordinary crushed sand have been replaced by …
اقرأ أكثرin sand, and it is recognized that these characteristics can a ect both fresh and hardened properties of concrete. How-ever, relevant researches are concentrated on mechanical or permeability properties of crushed limestone sand concrete [,, ], and e ects of such CS characteristics on property ofCSC,especiallyfrostdurability ...
اقرأ أكثر3. Santhosh Kumar.P.T et al made an attempt to study the effect of type of fine aggregate on the 28 day compressive strength of concrete. The result of the investigation indicate that the ratio of the 28 day compressive strength of concrete with crushed stone sand to that of river sand is 1.06 with a coefficient of variation of 11 %. III.
اقرأ أكثرThe use of crushed sand as a fine aggregate has rapidly increased due to a shortage of river sand. Accordingly, research on crushed sand concrete is required. In this research, the fracture characteristics of crushed limestone sand concrete were experimentally investigated through a wedge splitting test, and the results were compared with those ...
اقرأ أكثرThe mixes of each series incorporated different percentages of very fine sand (VFS) as a replacement for fine aggregate. Results indicate that the water demand increases rapidly when the VFS replacement is more than 5 percent in natural sand concrete and more than 15 percent in crushed stone sand concrete.
اقرأ أكثرThis paper describes the effects of high temperatures on the strength characteristic of crushed limestone sand concrete (CLSC). To compare, natural (river) sand concrete (NSC) and CLSC specimens were exposed to the three different high temperatures. Visual color-change and weight loss were also carefully examined through the tests. The test results indicated that the decreasing rate of ...
اقرأ أكثرTwo grades of concrete M20 and M25 having nominal mix proportion of 1:1.5:3 and 1:1:2 respectively were used by weight and w/c ratio was fixed according to the slump requirement of 60mm. For this concrete mix, quarry dust was added for replacement of sand from 0% to in step of 10%.
اقرأ أكثرRecently, it has been difficult to get natural sand for concrete due to an insufficient supply in Korea. Crushed sand was thought as a substitute and previous research has been focused on low fluidity and normal compressive strength (24?30ÿMPa). Study on high performance concrete using crushed sand is hardly found in Korea. In this study it was investigated that the effect of the crushed sand ...
اقرأ أكثرThe fracture characteristics of crushed limestone sand concrete. Journal of Cement and Concrete Research, 1719–1729. Kim, J. K., & Lee, C. S. (1995). A study on the fracture characteristics of crushed sand concrete and river sand concrete. Journal of the Korea Concrete Institute,7(4), 129–136 (in Korean).
اقرأ أكثرConcrete block pavement is used as a modern pavement type owing to its economic benefits. The physical properties, mechanical properties, and functional characteristics of bedding sand and joint sand, the main components of concrete block pavements, should be accurately understood. Owing to the discontinuous structure of these pavements, load transfer efficiency (LTE) is the most important ...
اقرأ أكثرThe crushed shape of aggregates, regarding its effect on the yield stress, plastic viscosity and the friction between concrete components play an important role in the performance of ordinary and also self-compacting concrete. In this research, the effect of standard crushed sand on the properties of SCC concrete has been studied.
اقرأ أكثرreplace natural sand in concrete. In the experimental study of strength characteristics of concrete using crushed pebbles as fine aggregate it is found that there is no increase in compressive strength, flexural strength and tensile strength of concrete when compared with natural sand. Key Words: crushed pebbles, fine aggregate
اقرأ أكثرThe feasibility of using crushed post-consumer glass as a partial replacement of sand in concrete has been studied. To suppress the deleterious reaction between the alkali in cement and the silica in crushed post-consumer glass (ASR), a Class F fly ash was used in the experiment with the cement replacements of about 15, 30, and 45 percent by ...
اقرأ أكثرThe reason that the crushed tuff sand reduced the sulfate erosion resistance ability of concrete at low temperatures is discussed on the basis of the mineral composition of tuff rock powder, the porous structure of concrete, and the interfacial transition zone (ITZ) microstructure of concrete.
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