第三リン酸カルシウムー第二リン酸カルシウム系混合物の水和凝結特性

概要

論文の詳細を見る
A new combination of α-Ca_3(PO_4)_2(TCP) and CaHPO_4・2H_2O(DCPD), each of which alone had a low or no hydraulicity, was proposed and investigated on its hydraulic properties. This combination showed a high hydraulicity probably due to the complementarity that the hydrolysis of TCP to octacalcium phosphate (OCP) was accelerated by the coexistence of DCPD and vice versa. Setting times were 9-30 min and reaction products were OCP only in the range of 1.20 to 1.47 in the mixing molar ratio Ca/P. Hardened bodies soaked in 0.9% NaCl solution at 37℃ for 1 day had a porosity of 49±3% and a wet compressive strength of 14-19 MPa, in comparison with 52±4% and 6-11 MPa for a Ca_4(PO_4)_2O-DCPD combination and 66±2%and ca. 2 MPa for a DCPD- CaCO_3 combination.
社団法人日本セラミックス協会の論文
1988-08-01