2016-6-10 · weight of cement; we can increase tensile strength up to 66%. With the help of nano particles, we can increase the tensile strength at nano level. For concrete with Carbon fiber volume fraction 0.5% , best results of tensile strength are achieved. It is increased up to 45%.

2013-10-18 · To increasing the compressive strength of concrete, we must increase cement and decrease water quantity. For example, M15 grade of concrete when we use50 kg of cement,480 kg aggregates and32 liters water we get15N/sq.mm compressive strength after28 days by15 cm. cube test.

2018-6-8 · Increasing cement content and porosity of the compacted mixture, the efficiency of using zeolite rises. In this paper, it has been shown that for the zeolitecementsand mixtures, q t increases via cement content (C) raise and porosity (η) reduction and a power function is well-adapted to fit both q t C and q t η.

2019-12-17 · The effect of water to cement ratio (in the range of 0.450.55) and wastes (with values of 37.5%) on the ratio of tensile strength to cost, by the cement content of 376 kg/m 3 and gravel volume of 0.5%, is shown in Fig. 4a. Accordingly, increasing both water to cement ratio and waste percentage has reduced the response value.

2016-6-10 · weight of cement; we can increase tensile strength up to 66%. With the help of nano particles, we can increase the tensile strength at nano level. For concrete with Carbon fiber volume fraction 0.5% , best results of tensile strength are achieved. It is increased up to 45%.

2021-5-12 · found that the indirect tensile strength increases and the strain at failure decreases with increasing cement content. [Niazi and Jalili, 2009] found that the density and Marshall stability of cold in place recycled as-phalt mixtures increases, and the air voids content and flow decreases with increasing cement content. They

Results suggest that the toughness was a more important parameter that contributes to the impact resistance of the cement-based materials. Increasing the tensile strength alone, however, did not seem to contribute to the impact resistance of the cement-based materials. Availability: Find a library where document is available.

2013-10-18 · To increasing the compressive strength of concrete, we must increase cement and decrease water quantity. For example, M15 grade of concrete when we use50 kg of cement,480 kg aggregates and32 liters water we get15N/sq.mm compressive strength

2020-2-18 · Compared to the plain cement, the compressive strength, flexural strength, tensile strength, and ultrasonic pulse velocity of this sample increased by 32, 25, 20, and 11%, respectively, and its ...

2010-1-18 · Split tensile strength The test specimens for the determination of split tensile strength of concrete are prepared using the standard metallic cylinder moulds adopting IS procedure for the rodding and hard compaction. The cylinders are demoulded after 24 h of casting and cured in water having similar quality as used in the preparation of mix.

2021-5-15 · Adjusting the strength of concrete based on the ratio of sand to cement is easy to do. The closer you bring the ratio to an even one-to-one ratio of sand to cement, the stronger you will make the concrete. On the other hand, if you push the ratio in the other direction you will get a product that has slightly less strength.

Methylcellulose addition (0.20.8% by weight of cement) to cement paste was found to increase the tensile strength by up to 72%, increase the tensile ductility by up to 620%, decrease the ...

BACKGROUND OF THE INVENTION. 1. FIELD OF THE INVENTION . The present invention relates to a method for increasing the strength, especially the flexural strength, of a fresh concrete, a cement paste, a mortar or the like (hereinafter referred to as "cement composition"), which comprises incorporating a water-soluble epoxy resin, an aliphatic amine and a cement dispersant into the cement ...

2018-1-11 · the direct tensile test is the same molds are used for compressive & tensile strength determination. The test is simple to perform and gives uniform results than other tension tests. σst= 2P πDl P: applied compressive load D: diameter of specimen l: length of specimen Splitting Tensile Strength

2011-4-1 · The results show that increasing any of the three factors reduces tensile and compressive strength, with sand-to-cement ratio being the most significant. Tensile and compressive strength have the same local optimum (maximum) at sand-to-cement ratio of 1, water-to-cement ratio of 0.4 and fiber volume fraction of 0%.

2010-1-18 · Split tensile strength The test specimens for the determination of split tensile strength of concrete are prepared using the standard metallic cylinder moulds adopting IS procedure for the rodding and hard compaction. The cylinders are demoulded after 24 h of casting and cured in water having similar quality as used in the preparation of mix.

2019-11-1 · The resultant tensile strength is calculated as: Split tensile strength = 2P/(piLD) where P is the load at failure, L and D are the length and diameter of cylinder. Figure 6. Split tension test. The ideal method for determination of tensile strength of concrete is the flexural test, since it matches the real life situation in RCC flexural members.

2021-5-12 · iii. Water-Cement Ratio. The compressive strength decreases, in general, with increasing water cement ratio. Hence, when minimum water has been used just to ensure complete hydration of the cement, the resulting concrete will give maximum compressive strength on

We investigated the effects of hydrogen-rich water (HRW) on the strength and durability of Portland cement mortars. We comparatively assessed the performances of HRW-based mortars (HWMs) with respect to cement mortars fabricated from control water (CWM). The results indicate that the use of HRW significantly improves the compressive, flexural, and splitting tensile strength

Title: Increasing Tensile Strength of Terrazzo. Author(s): A. M. Neville. Publication: Journal Proceedings. Volume: 61. Issue: 3. Appears on pages(s): 335-344. Keywords: Date: 3/1/1964. Abstract: Results of tests on terrazzo as normally used and with the addition of glass fiber or asbestos fiber are presented.

2020-9-21 · tensile strength and flexural strength were found to be increased. The experimental results revealed that ... of cement, size and type of aggregate, period and type of curing adopted. To investigate the increase in mechanical ... added, the compressive strength is found to be increasing. The same was observed by the earlier researchers

2012-4-6 · At a given water-cement ratio, increasing the volume of entrained air influences the compressive strength; this relation is shown by the curves in Fig 2 [2]. Fig. 2. Influence of the water-cement ratio, entrained air and cement content on concrete strength The water-cement ratio and cement content affect the response of concrete to applied stress.

The present study intends to quantify the impact of cement and zeolite contents, porosity index, porosity/cement and porosity/ SiO 2, and Al 2 O 3 particles ratios on zeolite-cemented sands by the assessment of splitting tensile strength (q t). A program of splitting tensile tests considering three distinct porosity ratios, four cement contents (2, 4, 6, and 8%), and six different percentages of zeolite replaced by part of cement

1999-9-1 · The tensile strength is the lowest strength parameter, and we believe that this is a likely mechanism of fracturing the cement, leading to gas migration. We, therefore, propose a new mechanism for initiating gas migration. After the gas has entered the pore system of the cement, the gas inside may overcome the tensile strength of the cement ...

2021-1-1 · Deformation and fragmentation characteristics reveal that increasing tensile strength of the exposed rock surface can increase the ductility and deformability of the rock, resulting in the occurrence of a significant yielding on the stress-stain curves and more small sized fragments.

2019-12-17 · The effect of water to cement ratio (in the range of 0.450.55) and wastes (with values of 37.5%) on the ratio of tensile strength to cost, by the cement content of 376 kg/m 3 and gravel volume of 0.5%, is shown in Fig. 4a. Accordingly, increasing both water to cement ratio and waste percentage has reduced the response value.

2015-9-18 · What are some ways to increase the strength of a concrete. Strength of concrete can be increased by numerous methods: Using cement of a higher grade. Higher the grade, higher is the surface area of the cement, and hence more surface of the cement particle is available for hydration. Using mineral admixtures like GGBS.get price

2015-7-22 · tensile strength of masonry caused by tensile stress depending on some essential influencing values. Furthermore the relations between tensile strength of masonry and brick-/mortar properties had to be investigated, resp. those between the bonding proper ties of bricks and mortar. 4. TEST RESULTS 4.1 Shearing Tests

2020-10-13 · Kim and Park [14] concluded that the tensile strength increases with increasing the volume fiber content. Few studies [ 16, 17] reported that the compressive strength of cement pastes reinforced with carbon fibers is superior than that of the base matrix, Other studies reported that the ...

2019-3-31 · Tensile strength is the ability of concrete to resist breaking or cracking under tension. It affects the size of cracks in concrete structures and the extent to which they occur. Cracks occur when tensile forces exceed the tensile strength of the concrete. Traditional concrete has a significantly lower tensile strength as compared to compressive strength.

2021-5-12 · The actual tensile strength of cement paste or similar brittle material as that of stone is very much lower than the theoretical strength estimated on the basis of molecular cohesion of the atomic structure and calculated from the energy required to create the new surfaces by fracture of a perfectly homogeneous and flaw (fracture) less mate ...

2008-5-27 · influencing strength is the water-cement ratio, as famously encapsulated in Abrams rule. This states that the strength of concrete falls monotonically as water-cement ratio rises. A more accurate formulation would be: The strengths of comparable concretes depend solely on their water-cement ratios regardless of their compositions.

A composite material was prepared with high compressive and tensile strength,which was composed primarily of Class G oil well cement,superfine cement,and microfine cement,using a simple mixing method.The compressive strength of the material was maintained by the micron-size green silicon carbide, and the tensile strength was enhanced by the micro steel fiber.

2020-12-8 · Another way of increasing the flexural strength is by replacing a part of cement with pozzolanic additives like fly ash or Ground Granulated Blast Furnace Slag (GGBS). The pozzolanic additives play a major role in reducing the size and concentration of the Calcium Hydroxide crystals and invoking the formation of the most vital Calcium Silicate Hydrate Gel (CSH gel).

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