EP early strength pumping agent EP series pumping agent is the result of the cooperative research and development by China Building Materials Science Research Institute, the Design Institute of the Ministry of Railways, and the China Construction First Bureau. This series of products is divided into two kinds of early strength and retardation, and it is the most ideal material for preparing high-quality pumping concrete, and it is also the first series of pumping agent products in China. EP early strength pumping agent quality specification 4 toxicity: non-toxic, non-combustible. Non-chlorine admixtures, non-corroded steel bars.

1 芫 All meet the technical requirements for the construction of railway tunnel formwork trolleys.

2 When the cement dosage and slump remain the same, after the EP early strength pumping agent is added, the concrete achieves a water reduction of ~16%, the 17h compressive strength is more than doubled, and the 3c compressive strength is improved. 50%. The gas content in concrete increases about 1%~3%.3 Under the condition that the mix ratio in concrete remains the same, the slump increase of EP early strength pumping agent is increased by more than 10cm. At this time, the cement slurry pressurizes and dewaters. Rate and concrete atmospheric pressure bleeding rate significantly reduced.

4 The concrete with EP early strength pumping agent had a slump loss close to that of the blank concrete when the temperature did not exceed 15°C, and the temperature increased slightly above the ban height, but it was in line with Japan and France requirements for fluidizers.

5EP early strength pumping agent has a good effect on low temperature construction of concrete. For example, at 4°C, with the same amount of cement and slump, after adding EP early strength pumping agent, the 3d compressive strength of concrete increases about 100% 28d and increases about 30%. After the agent, the amount of concrete cement used per cubic meter of concrete (350kg/m) can save 50kg of cement, which is equivalent to the good adaptability of It7j 7EP early strength pumping agent to cement, which can be used for various silicate cements.

1 Prepare concrete with early performance.

2 Prepare pumped concrete that is hardened under alternating temperature conditions or at low temperatures.

3 Prepare the liquid concrete required for construction and civil engineering.

4 The application range of early strength agent or early strength water reducer.

4 limbs method and precautions 1EP early strength pumping agent suitable dosage of 1.0% to 2.0%. According to the different requirements of concrete performance and construction conditions, the amount can be adjusted, but the maximum dosage should not exceed 2.5 %2EP early strength pumping agent can be used as a certain concentration of solution, in order to accelerate the dissolution of hot water can be used 40 ~ 70 °C, the solute must be fully dissolved, the solution should remain uniform.

3EP early strength pumping agent solution concentration should not be greater than 20%, if found before the use of crystal precipitation at the bottom of the container should be heated and stirred to make it completely dissolved, after the concentration was measured.

4EP early strength pumping agent should be used directly with powder. If it is found that the phenomenon of damp agglomeration should be crushed and passed through a 30 mesh screen before use.

5EP early strength pumping agent such as powder directly into the mixer, should first dry cement and aggregate more than 3s and then add water, mixing time not less than 6 if the use of concrete mixer transport mixing, the general transport time should be greater than 15min After the scene should be accelerated stirring lmin7 when necessary, EP early strength pumping agent can also be added to the mixer before discharge, and after the sandwich plate uniform discharge, but the mixing time is not insulted less than the provisions of Article 6.

8 According to the needs of the project, early strong supply of EP can be used in combination with other admixtures, and its compounding effect must be determined through tests. When preparing the solution, attention should be paid to its co-solubility. If phenomena such as flocculation or sedimentation occur, separate solutions should be added to the mixer.

When 9EP early-strength pumping agent is used in the construction of railway tunnels, all relevant regulations for concrete and reinforced concrete in railway tunnel construction should be complied with.

Fastener Series

Fasteners: Studs Bolts Nuts Washers,hotglavanized bolts,nuts washers, stainless steel bolts, nuts and washers

Steel Oval Eye Bolt/Hot dip galvaninzed Electric power fittings/electric power fittings

Steel Screw Fasteners Stainless Bolts and Nuts

Materials:

1)Stainless Steel: SUS201,SUS302,SUS303, SUS304, SUS316, SUS410, SUS430

2)CarbonSteel:C1006,C1008,C1010,C1018,C1022,C10B21,C10B33,C1035,C1045,

C435#,40CrMo,42CrMo

3)Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200CuZn37), C28000(CuZn40)

4)Bronze: C51000, C52100, C54400, etc

5)Aluminum: Al6061, Al6063 etc

Aluminum Alloy: Al6061, Al6063 etc

6)Titanium and Titanium Alloy: TAD,TA1-TA8,TB2,TC1-TC10

7)Alloy steel: SCM435,C10B21,C10B33

8)Iron:1213,12L14,1215,ect

9)Standard:GB, DIN, ISO, ANSI, ASME, IFI, JIS,BSW,AS,Q,HJ,BS,PEN

Surface

Part galvanization ,Colorful galvanization ,Army green galvanization ,Black galvanization ,Steam Black ,Ash phosphorus ,Brass , Nickel plate ,Chrome plate ,Heating galvanization ,Zinc plated(yellow, black, green)

Studs Bolts Nuts Washers,Galvanized Bolts,Nuts Washers,Stainless Steel Bolts

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