strictly speaking, only early-strength high-performance water-reducing agents, or high-performance water-reducing agents, or certain high-performance water-reducing agents can be considered high-performance water-reducing agents
on the contrary, if they are called early-strength high-efficiency water-reducing admixtures, early-strength pumping agents, early-strength retarding water-reducing admixtures, etc. the requirements for high-efficiency water-reducing admixtures, pumping agents, and retarding water-reducing admixtures in gb8076-2008 should be followed respectively. standard.
people who make water-reducing admixtures are not stupid, and they will not let others catch such a handle. do the admixtures for ordinary commercial merchants with c15 need to have a water-reducing rate of more than 25%? a water reduction rate of about 18 is enough, but it is indeed an early-strength type
the homogeneity index of early-strength high-performance water-reducing agent
test project index
p>[1] the solid content of liquid early-strength high-performance water-reducing admixture: when s ≥ 20%, 0.95 s ≤ x<1.05 when ss<20%, 0.90 s ≤
【2】 the moisture content of solid early-strength high-performance water-reducing admixture: when w ≥ 5%, 0.90 w ≤ x ＜ 1.10ww ＜ 5%, 0.80 w ≤ >【3】the fineness of the solid early-strength high-performance water-reducing agent should be less than 15% on a 0.3mm sieve
【4】the ph value should be within ± 1.0 of the manufacturer's control value
【5】 density is a high-performance water-reducing agent for liquid early strength. the fluctuation range of density test value should be controlled within ± 0.01g/ml
【6】 cement slurry the fluidity should not be less than 95% of the value controlled by the manufacturer
[7] the water reduction rate of mortar should not be less than 95% of the value controlled by the manufacturer
note: 1) s is production the solid content (mass percentage) provided by the factory, x is the tested solid content (mass percentage).
2) w is the moisture content (mass percentage) provided by the manufacturer, and x is the tested moisture content (mass percentage).
3) choose one of cement slurry fluidity and mortar water reduction rate. </p
