Abstract: Based on the background of an expressway project in Guizhou province, an experimental investigation on mechanical sand C50 concrete prepared by high frequency vibration was carried out in the construction site laboratory. The main raw materials are selected in test and their performances are tested and optimized to determine the best mixing ratio of the C50 machine-made sand concrete.

Download scientific diagram | C20 -C50 pumping concrete 50% machine-made sand substitution rate test ratio. from publication: Application Research of Gravel and Machine-Made Sand along the KKH-2 ...

Three strength grades of concrete C30, C40 and C50, and the contents of stone powder in machine-made sand of 5%, 9% and 13% in mass were considered in the …

2020-7-30 · Type I ordinary Portland cement was used with a specific surface area of 362 m 2 /kg, the properties and oxide compositions of cement were shown in Table 1, Table 2.Both AMF and MS were made from limestone. The XRD pattern of AMF was shown in Fig. 1, and the specific surface area was 353 m 2 /kg. MS had a fineness modulus of 2.93, and its physical properties were shown in Table 3.

2021-2-1 · C40 mix ratio (must use 42.5 grade cement or above): cement: sand; stone: water = 1: 1.08: 2.41: 0.40 (weight ratio) material dosage (kg/m3): cement: 488kg; sand: 528kg; stone: 1176kg water: 195kg. Tubu Machinery specialises in the the concrete screeds that …

2019-11-22 · 6. 4. 2. 0. 4.m 2.m 1.m 6 mi 3 mi 1 mi. River Manufactu. FRESH CONCRETE PROPERTIES WORKABILITY. This was measured by conducting a slump test. Keeping the water- cement ratio at 0.35 and 0.50 and using super plasticizer (at 15ml per kg of cement) the slump values were determined for both M20 and M25 mixes using river sand and M-sand as fine aggregate.

2002-3-1 · Calculating sand–aggregate ratio according to, and at the same time referring table according to water–cement ratio and the maximum grain size of coarse aggregate, one can get the homologous sand–aggregate ratio. Comparing them with the actual sand–aggregate ratio (as in Fig. 5, the two right lines are the upper limit and lower limit of value obtained by referring table, respectively ...

The complex particle shape, the higher content of stone powder and strong absorption effect on water reducer of manufactured sand will deteriorate the workability of concrete mixture,, especially the gradual loss of slump and the later strength order to alleviate this phenomenon, two groups of mix proportions were designed, namely, A group of mix proportions with basic dosage of water ...

2021-1-1 · PDF | This paper studied the influence of various performance indexes of machine-made sand on concrete work performance and admixture adaptability. The... | …

CN-109650771-B chemical patent summary.

As part of the studies on the durability of concrete with machine-made sand, this paper introduces the test results and the forecast model of time-dependent chloride penetration of this kind of concrete. Three strength grades of concrete C30, C40 and C50, and the contents of stone powder in machine-made sand of 5%, 9% and 13% in mass were considered in the mix proportion of concrete with ...

2021-11-22 · The morphologies of individual particles vary greatly, which intimately affect the physical and mechanical properties of granular assemblies. In this paper, a modified morphology quantification and generation method of granular particles based on two-dimensional images is proposed. By defining the ratio of the long axis and the short axis of the least-squares fitting ellipse of the particle ...

2022-1-12 · The particle size of machine-made sand is between 4.75-0.15mm, and there is a certain proportion limit for stone powder smaller than 0.075mm. Its grain size is 4.75, 2.36, 1.18, 0.60, 0.30, and 0.15. The particle size should be continuous, and each particle size should have a certain proportion. The grain shape should be a cubical, and there ...

2017-2-11 · To solve for x, use the principles presented in Chapter 4 on ratio and proportion. 50 mg 1 mL = 25 mg x mL ( known) ( unknown) 50 x 50 = 25 50 x = 0.5 mL. Remember that, as shown, the known is stated as the first fraction, and the unknown as the second. When stated in fraction format, solve by cross multiplication.

This paper introduces the experimental results of long-term carbonization of concrete with machine-made sand (MSC), which is part of the studies on durability of this new concrete. Three strength grades of concrete C30, C40 and C50, and the contents of stone powder in machine-made sand of 5%, 9% and 13% in mass were considered in the mix proportion of concrete with machine-made sand.

Concrete Mix Ratios - Cement Sand Aggregate and Water. Concrete mix ratio of 1:3:3 – On mixing 1 part cement 3 parts sand with 3 parts aggregate produces concrete with a compressive strength of 3000 psi.. On mixing water with the three ingredients a paste is formed that binds them together till the concrete mix gets hardened.The strength ...

2022-6-26 · 4) For plain cement concrete, ratio of cement to sand is = 1:3, 1:4, 1:5, and 1:6. Cement to sand ratio for brickwork:- as per general guidelines, for block/ brick work or masonry construction or mortar mix, typically, ratio of cement to sand is 1:3 (1 part cement to 3 parts sand), 1:4 (1 part cement to 4 parts sand), 1:5 (1 part cement to 5 parts sand) and 1:6 (1 part cement to 6 parts sand ...

The influence of fly ash content, water-cement ratio, sand ratio and polycarboxylic acid type water-reducer dosage on the early-strength and performance of C50 concrete is investigated combined ...

2022-3-7 · Machine-made sand. The use of machine-made sand as concrete fine aggregate instead of natural sand has become a new trend in the development of the concrete industry. However, there are the following unfavorable factors in the preparation process of machine-made sand: large specific surface area, irregular grain shape and unreasonable gradation ...

Article "APPLICATION OF PUMPED MACHINE-MADE SAND IN C50 CONCRETE" Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone ...

2017-11-14 · This may be influenced by a material proportion, admixture dosage, and curing process. To determine the magnitude of these affects, the test method is made by comparing various proportions of concrete material. Experiments conducted on concrete containing sand to the aggregate ratio that is S/A 35%, 43%, and 50% with the design fc'' 55 MPa.

The proto-machine-made sand is a new artificial material for environmental protection with grain size smaller than 5 mm made of water cleaned crushed stones or gravels broken and separated by machines, in which the stone powder maintains as prototype and certain content by improving the production technology. The paper introduces a series of test results of grade C50 concrete mixed by proto ...

In the case of fixed powder paste, changes in the sand ratio have an impact on the workability of concrete. According to Mehta and Aitcin''s ideas for the preparation of HPC, regard the powder as cementing material and the powder paste as cementing material paste. Investigate the influence of sand ratio on concrete performance when the powder paste reaches the fixed number 350L, the concrete ...

Dishwasher Machine-C50 fully automatic functions. Standard equipment: 2 baskets,. Rinse-aid dosing pump. Basket size : 500 X 500 mm. Voltage : 230V/50Hz. Power : 3660 W ... Water Consumption : 2.7lt. Cycle : 90-120(120)120. Weight : 44kg. Dimensions : 550 X 600 X 825 mm Model : C50/ Made in Italy. Share your thoughts! Let us know what you think...

2021-2-1 · The research results show that the mud dosage in machine-made green sand is relatively higher, and the admixture dosage increases along with the increasing of the value. The mixing of different types of machine-made sand has a certain effect on the compressive strength, which reaches the peak at a certain ratio.

The strength of concrete is divided into twelve grades, such as C7.5, C10, C15, C20, C25, C30, C35, C40, C45, C50, C55, C60 and so on. The concrete mix ratio refers to the proportion of the components in concrete (cement, water, sand, and stone).

2022-6-27 · So, Sand required = 0.072*1600 = 115 kgs. and Aggregate required = 0.144*1450 = 209 kgs. Considering water/cement (W/C) ratio of 0.55. We can also arrive at the Water required = 50*0.55 = 27.5 kg. So, One bag of cement (50 Kgs) …

The concrete mix ratio refers to the proportion of the components in the concrete. The strength of concrete is divided into twelve grades such as C7.5, C10, C15, C20, C25, C30, C35, C40, C45, C50, C55 and C60 ncrete mix ratios are expressed in two ways: one is expressed in materials used per cubic meter of concrete (Water: Cement: Sand ...

2002-3-1 · In the calculation of concrete mix proportion, sand–aggregate ratio and water dosage are determined by referring table, which is fairly arbitrary. In this paper, according to the concept of coordination number and Bingham model rheology, we deduced the formulas of sand–aggregate ratio and water dosage, respectively, and then utilized the ...

The results show that although the mechanical properties of MSRAC were influenced by sand ratio, they were still controlled by the water to cement ratio. ... Experimental study was carried out on the concrete mixed with machine-made sand and recycled coarse aggregate (MSRAC), three strength grades of concrete were designed by changing the water ...

1 : 3 : 3 MIX RATIO. To produce a 3000 psi cubic yard of concrete (27 cubic feet) the concrete mixture ratio is: 517 pounds of cement or (234kg) 1560 pounds of sand or (707kg) 1600 pounds of stone or (725kg) 32 - 34 gallons of water or (132L) This …

2019-4-10 · The regulation on the influence of fly ash dosage and desert sand replacement ratio on the compressive strength and splitting tensile strength of high strength desert sand concrete was analyzed. Experiment results show that with the increase of desert sand replacement ratio, the compressive strength and splitting tensile strength of high ...