Post-tensioned prestressed channel appropriate USES special pressure slurry

Pressure slurry paste manufacturer after zhang prestressed duct pressure pulp price appropriate USES special pressure slurry or special grouting the seam an agent preparation of slurry grouting. Raw materials used shall meet the following requirements: 1 cement should be not less than 42 stable performance, strength grade. 5 the low alkali silicate or low alkali ordinary Portland cement, cement performance requirements shall be 6 conform to this specification. 15. The provisions of article 4. 2 plus the seam an agent should have good compatibility with cement, and shall not contain chlorine salt and nitrite or other have corrosion on prestressed reinforcement effect. Water reducing the seam an agent should use high efficiency water reducing the seam an agent, and should meet the current national standard concrete with the seam an agent ( GB8076) High efficiency water reducing the seam an agent in the requirements of grade a, the water reducing rate should not be less than 20%. 3 varieties suitable for mineral admixtures Ⅰ grade fly ash, ground granulated slag powder and silica fume, and shall comply with this specification. 6. 15. The provisions of article 8. 4 water should not contain harmful for prestressed concrete or cement, per litre shall not contain more than 350 mg of chloride ions, or any other organic matter, appropriate USES accord with national health standards of clean drinking water. May expand the seam an agent appropriate USES ettringite is beauty or composite expansion seam an agent, shall not be used for aluminium expansion source of beautiful seam an agent or total alkaline 0. More than 75% of high alkali expansion seam an agent. 6 of chloride ion content in grouting materials should not exceed 0 of the total gelled material. 06%, the specific surface area should be more than 350 m2 / kg, sulphur trioxide content should not be more than 6. 0%.