ZY expanders ZY Expansive Agent Executive Standard: GB 23439-2009 "concrete expansion" Introduction ZY series of concrete expansion was successfully developed in the former UEA expansive based on the latest products. Obtained by calcination kiln clinker expansion, with the right amount of high-quality gypsum and modified components, in accordance with the specific process from grinding together, is a high performance, low ash, low alkali content of sulfur aluminate concrete expansion. Formulated shrinkage-compensating concrete can be reduced due to shrinkage of the concrete structure and shrink harmful cracks, leaks overcome structural problems (structural waterproof), and to resolve long reinforced concrete structure seamless construction problems. Technical characteristics and indicators ◎ low alkali content. Materials used in the rare K +, Na + ions, thus the product is less than 0.30% total alkaloids. ◎ hydration activity, short reaction period. Expanders stable macroeconomic performance for short period, usually 14 days, the water is no longer a significant expansion, and thus had no significant effect on the early strength of concrete, enhance the effect of the late strength. ◎ reinforced under constraint, since the establishment of micro-expansion stress value of 0.2 ~ 0.7MPa in concrete, improving crack resistance. ◎ micro-expansion to improve concrete density, permeability index up more than S20, frost and corrosion resistance is also significantly improved. ◎ no chlorine ion, no corrosion of steel, also had no effect on the water quality of the storage tank. ◎ performance low dosage. ZY content only 6 to 8 percent, little effect on the use of the original concrete mix design, and low dosage is advantageous to reduce the project cost guarantee. Scope can be applied to concrete rigid structural waterproof, long structure seamless construction and massive concrete crack control and other aspects: ◎ permeability of concrete can be used in the preparation of ground and water requirements of the building: such as basements, subways, tunnels, water pools, tanks, dams, etc. ◎ shrinkage-compensating concrete can be used in the preparation of the ground with the requirements of large-scale crack reinforced concrete works, such as concrete floors, runways, garages, parking lot, massive concrete structures and require less contraction joints remain large projects. ◎ preparation impermeable mortar, mortar for damp toilet bath rooms and other water projects. ◎ This product should not be used for long-term projects in more than 80 ℃ or site. Use ◎ preparation shrinkage-compensating concrete and ordinary concrete mix design is basically the same water-cement ratio is adjusted according to the requirements of concrete slump, usually not more than 0.5. ◎ concrete expansion amount calculated as follows, namely: content = Z / (C + Z + F), where: C- cement, Z-ZY series of concrete expansion, F- fly ash and other active admixture. ◎ ZY series of concrete expansion can be directly incorporated into the cement, sand, stone and other concrete together, because different uses content (within the mixed, equivalent alternative cementitious materials) as follows: waterproof mortar: content about 6-8%. RC: 6 to 8 percent, according to various project sites dosage should be experimentally determined. Concrete filling: 10 to 12%, such as steel concrete piles, etc. ◎ mixed concrete expansion ZY series of concrete strength grade is not lower than C25, cementitious material per square concrete amount ≥300kg, cement grade ≥32.5 #, mortar strength of not less than 10MPa. ◎ than conventional concrete mixing time should be extended from 10 to 30 seconds. Expanders accurate measurement, dosing error ≦ ± 1%. ◎ concrete transport, shock ramming and ordinary concrete, like the earthquake does not leak, due to shock, over shock. After pouring timely maintenance, not less than 14 days, kept moist curing period, especially to strengthen the early conservation, prevent concrete early dehydration. ZY series ◎ mixed concrete expansion joints reinforced concrete structures may be extended to 60m above the pitch, using seamless construction technology designed to cancel after pouring belt (with the exception of the settlement after pouring). ◎ ZY series of concrete expansion can be used together with other additives, it has pumped early strength, retarding and antifreeze function, but it must be adaptive test. Packaging and storage 1. woven inner plastic packaging bag weighing 50kg 3. 2. 4. Save the moisture storage period of six months, expired physical performance test shall be repeated.