ne sulfonate KS-20. it is opposite that the fluidity of castable mixing and matrix slurry with the water reducer. They are inappropriate as water reducer for low cement castable. Reached an appropriate liquidity, the dosage of superplasticizer is low, hexametaphosphate SHP, and sodium tripolyphosphate STP are high, sulphamate superplasticizer FZ-1, and naphthalene sulfonate superplasticizer KS-20 are higher.
(3) Tested the rheological properties of matrix slurry in the presence of different types of water reducer. The results are shown that: It performanced fluid plastic for matrix slurry with Sodium hexametaphosphate SHP and tripolyphosphate STP over a wide range of amount, and performanced plastic fluid, pseudoplastic fluid and swelling fluid for superplasticizer, amino sulfonate and naphthalene sulfonate with the increased the dosage.
(4) Tested the viscosity of matrix slurry with different types water reducer. The results are shown that: All water reducer can significantly reduce the viscosity of the matrix slurry, when the content reaches a certain amount, the viscosity is reduced to a certain extent, and then increasing the amount, the viscosity did not change significantly. As water reducer in a suitable dosage, the viscosity is higher for SHP and STP, and it is lower for superplasticizer KS-JS70, KS-JS40, GLENIUM and LMS- P, the results are consistent with the fluidity of matrix slurry and castable mixture with water reducer. The viscosity is lower for matrix slurry with Sulphamate FZ-1 and naphthalene sulfonate KS-20.
(5) ζ- potential was measured for the powder slurry and matrix slurryunder in the presence of different chemical admixtures. The results are shown out: the ζ potential can be significantly reduced for powder and slurry systems by adding different chemical additives, When the additive amount was reached a certain level, ζ potential wasn’t changes obviously.
(6)Tested the compressive strength, flexural strength, bulk
