Effects of water content, magnesia-to-phosphate molar ratio and age on pore structure, strength and permeability of magnesium potassium phosphate cement paste

Influence of magnesia-to-phosphate molar ratio on microstructures, mechanical properties and thermal conductivity of magnesium potassium phosphate cement paste with large water-to-solid ratio

“…This observation well agrees with a previous experimental study [15] in which MKPC paste with lower M/P offered stronger adhesive strength due to the better fluidity and increased MKP hydrate. As reported in the previous investigations [1,16,22,23], the better mechanical performance of MKPC-based composites can be largely attributed to the better formation of MKP hydrate and the more ideally compacted microstructures. Therefore, the phase composition, microstructure and quantitative analysis on the investigated MKPC pastes were further investigated, discussed and presented in the following sections.…”

Experimental research of water stability of magnesium alumina phosphate cements mortar

“…The effects of pore structure on intrinsic permeability and mechanical properties of MPCs were studied in more depth by the present authors [32], who shows that the pore phase could significantly affect the strength as it breaks the connectivity of the solid phase. It was found that the higher the porosity was, the lower the compressive strength would be.…”

Tests on magnesium potassium phosphate composite mortars with different water-to-binder ratios and molar ratios of magnesium-to-phosphate

“…MPCs are commonly known as low-temperature high-strength materials derived by through-solution acid-based reaction between dead burned magnesia and phosphate [7]. Considering the enhanced mechanical strength of MPCs, magnesium ammonium phosphate composites (MAPCs) and magnesium potassium phosphate composites (MKPCs) are the most widely found type of cementitious materials in engineering practice and experimental research programs.…”