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By Concrete block type (Solid, Hollow, CLC and RMC): Solid block is the market leader followed by hollow block in terms of volume, as of FY'2019. Solid blocks are commonly used to build load bearing walls due to its density and compressive strength of 5 Newton/meter square which is much higher than other types of concrete blocks.
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Strength of concrete – The concrete structure should be designed well to sustain the load. In the case of low tensile strength or compressive strength of concrete, the cracks can quickly appear on the concrete surface. It makes way to oxygen and water.
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Concrete is a thermal mass material mainly composed of cement, water and aggregates. Concrete is used in building materials twice as much as all other building materials like plastic, wood and steel [17]. Improving the thermal behavior of concrete reduces the EC in buildings. The K-value, specific heat and thermal diffusivity denote thermo ...
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Aug 01, 2012· Therefore, the increase in concrete strength is slowed or stopped altogether. The extent of the effect of oil on concrete, in this case, is characteristic of oil-saturated concrete at an early age. 6. Conclusions. The effect of mineral oil on the compressive strength of concrete was investigated in the field and in the laboratory.
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International Journal of Engineering Research & Technology is a peer-reviewed, open access and multidisciplinary engineering, technology and science journal that publishes original research & review articles of all major branches of Engineering, Science and Technology. We have adopted a fully open access publishing model which allows open global access to its published content so anyone can ...
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strength characteristics of structural steel, e.g. ASTM A50 which identifies the steel as having a yield (or failure) strength of 50,000 pounds per square inch. Live Load – the loads imposed on a structure that are not permanently attached to the structure such as loads imposed by the weight of people, movable equipment, vehicles and furnishings.
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Strength is an essential parameter for quality control in the construction and most important selection criteria for building material. It shows the ability of a material to withstand the failure under the action of stresses caused by loads such as compression, tension, bending and/or impact etc. that can be caused either due to the forces of ...
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Cement strength grades and water-cement ratio are the main factors impacting concrete strength. The chemically combined water needed in cement hydration generally account for 23% of the mass of cement. But in the actual mixture of concrete, more water is needed to obtain greater mobility.
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Greater Kolkata city (Shown in Fig. 2) is located on the left bank of the river Hooghly (Ganga). The city also comes under the seismic zone III as per the seismic zoning map of India (IS: 1893 [4]).
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The flooding of concrete on the surface ensures the concrete does not lose its internal moisture, ensuring proper hydration of cement . As a result, the concrete gains its full strength. Prompt and effective curing from the first day, increases the strength of concrete from 25-30% and also protects concrete from cracks due to hot weather ...
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pressive strength of concrete. Thus, after one day, the use of dry aggregate gave on the average 10 MPa higher compressive strength than that of prewetted aggregate. The strength-density ratio was affected by the moisture condition of the aggregate. Thus, dry lightweight aggregate gave 9 …
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All concrete batches had been tested for slump & the strength of 150 mm x 150 mm hardened concrete cube been determined for 3, 7 & 28 curing days. As a result, the lowest workability stated for 15 ...
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The concrete substrate must be sound and of suffi-cient compressive strength (minimum 20 N/mm2) with a minimum pull off strength of 1.5 N/mm2. The substrate must be clean, dry and free of all con-taminants such as dirt, oil, grease, coatings and sur-face treatments, etc. If in doubt apply a test area first. SUBSTRATE PREPARATION
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Influence of diesel oil and bitumen on compressive strength of concrete . Gbenga Matthew Ayininuola . Department of Civil Engineering, University of Ibadan, Ibadan, Nigeria. Received on 12 June 2008 . Abstract . The costal areas of Nigeria are polluted with oil due to oil spillage and pipeline vandalism. The
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"Influence of palm oil fuel ash on strength and durability of concrete." Proceedings of the 7th International Conference on Durability of Building Materials and Components. Stockholm, …
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Effect of Oil Contamination on Properties of Concrete Mineral oil in water, that have no animal or vegetable oil content have no adverse effect on the concrete properties. The mineral oil content to a percentage of 2% is said to increase the strength of the concrete. But for more than 8% mineral oil, the strength is reduced.
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The concrete substrate must be sound and of suffi-cient compressive strength (minimum 20 N/mm2) with a minimum pull off strength of 1.5 N/mm2. The substrate must be clean, dry and free of all con-taminants such as dirt, oil, grease, coatings and sur-face treatments, etc. …
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Glass has been a fascinating material to humankind since it was first made in about 500 BC. At first thought to possess magical properties, glass has come a long way. It is one of the most versatile and oldest materials in the building industry. From its humble beginnings as a window pane in luxury houses of Pompeii to sophisticated structural ...
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The influence of FS on the behaviour of concrete was evaluated through strength and durability properties. The test results revealed that compared to the concrete mixtures with a substitution rate of 30%, the control mixture had a strength value that was only 6.3% higher, and this enhancement is not particularly high.
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Abstract. This paper presents the effects of low volume fraction of polyvinyl alcohol (PVA) fibers on the mechanical properties of oil palm shell (OPS) high strength lightweight concrete mixtures. The slump, density, compressive strength, splitting tensile strength, flexural strength, and modulus of elasticity under various curing conditions have been measured and evaluated.
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Concrete cracks when the tensile strain, €°t, ex-ceeds 0.010 to 0.012 percent. This limiting tensile strain is essentially in-dependent of concrete strength. The 5 percentile of the tensile strength, f, should be used in design to locate areas in the structure that are likely to crack by comparing calculated stresses with the expected ...
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Influence of hydrocarbon with concrete. It has been asked "do hydrocarbons influence concrete degradation". Hydrocarbons are typically a compound of hydrogen and carbon, such as those which are the chief components of petroleum and natural gas carbon atoms. Awareness of the risk on brownfield sites should be evaluated; the most common will be associated with industrial sites with fuel tanks e.g.
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The authors of the article assessed the impact of operating fluids used to service aircraft on changing mechanical parameters of cement concrete intended for airport pavement. The research concerned concrete designed with the use of CEM I 42.5N LH NA low-alkali cement, broken granite aggregate, fine …
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Wood fiber has long been known as fiber reinforcement for concrete . Because of the availability and low cost of production, natural fiber has been used in less developed countries where conventional building materials are very expensive. Fiber added to cement composite for increasing toughness, strength, impact resistance and resistance to fire.In this study, initially it is expected to ...
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Saman and Omidreza (2011) reported the influence of oil palm shell on workability and compressive strength of high strength concrete. They noted that the general strength of oil palm shell (OPS ...
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The influence of different crude oil products on concrete in comparison to water investigated by the author and other researchers is shown in Fig. 1. The most common conclusion is that concrete behaves as a "molecular sieve" where different sized ... find compressive strength of concrete grade C-25 af ...
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Google Scholar provides a simple way to broadly search for scholarly literature. Search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.
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aggressive effect of mineral oil on concrete by comparing the strength on oil-free concrete and oiled concrete at the same age experimentally is the optimal and most reliable of the existing method. The aggressiveness of oil is very clear for low and high strength concrete and the reduction in
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The effect of air content on concrete strength. Q. How does air content affect strength? A. Intentionally entrained air voids improve the resistance of concrete to damage from cycles of freezing and thawing.Any air voids reduce the strength of concrete, with about a 5% reduction in strength for each 1% increase in the volume of air voids.
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The compressive strength than that of slag cement and sample difference in trends of variation in compressive strength for containing only CI. 7 days compressive strength decreases both OPC mortars and slag cement mortars due to addition of with addition of CI to concrete cube made with OPC, while an CI with and without polymer are clearly ...
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106 Design and Control of Concrete Mixtures EB001 Table 6-1. Concrete Admixtures by Classification Type of admixture Desired effect Material Accelerators Accelerate setting and early-strength Calcium chloride (ASTM D 98 and AASHTO M 144)
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Research result shows that the addition of bottom ash to concrete influenced workability in concrete, but it did not significantly influence the compressive strength of concrete. Based on the result of compressive strength test, the optimal compressive strength was obtained from the mixture of cement and 0% bottom ash.
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