Homogeneity index

Physical and mechanical properties of concrete

Main technical performance

◆sing hl-4 type accelerator, u has the advantages of fast setting, high viscosity, small resilience, wide adjustment range and strong adaptability to cement.

◆initial setting time was 2-4min, and final setting time was 4-8min.

◆The u content is 3-5% of the cement content, generally 4%, and the water-cement ratio is 0.4.

◆The one-day compressive strength of u mixed with this agent is 8.8MPa, and the 28-day strength can be maintained at more than 80%.

◆the cement setting time are greatly influenced by the temperature, below 20 ℃ (average temperature is 20 ℃), can be appropriately increase dosage.

Application technology

◆All kinds of accelerating agents have adaptability problems to cement. Before use, the cement used for construction must be tested for adaptability to determine the optimal dosage.

◆During the construction, the water-cement ratio should be strictly controlled between 0.3-0.5. If the water-cement ratio is too large, it will affect the use effect.

◆mixed with this accelerator of concrete dry mix with mix, its stacking time is not more than two hours, otherwise, not only affect the rapid setting effect, but also will reduce the strength of shotcrete.

◆concrete engineering mixed with accelerating agent should strengthen early maintenance to ensure the smooth hydration reaction, in order to reduce the later strength of concrete reduction.

◆cement storage too long or poor construction conditions, must be appropriately increased dosage.

Packaging, transportation and storage

◆The product is packed in a woven bag lined with plastic film and weighs 25kg 0.25kg/ bag or 50kg 0.5kg/ bag.

◆In the process of handling, handle with care, do not rain, to prevent packaging damage and damp affect the quality.

◆The product shall be stacked in a ventilated and dry warehouse with a valid period of 180 days, and can be continued to be used after passing the concrete test.