Shanghai Shunan Building Materials Co., Ltd.
Main products:inorganic insulation mortar,ceramic adhesive for floor,polymer anti-crack coating,concrete interface agent,putty for wall
Contact Us
  • Contact Person : Ms. Chen Emily
  • Company Name : Shanghai Shunan Building Materials Co., Ltd.
  • Tel : 86-21-58041299-809
  • Fax : 86-21-58041300
  • Address : Shanghai,Pudong,No.68, Wanda Road, Wanxiang Industrial Park, Nanhui
  • Country/Region : China
  • Zip : 201313

Shunan Mortar Expansive Agent

Shunan Mortar Expansive Agent
Product Detailed
concrete expansive agent is mixed with ordinary cement and hydrated, cement mortar or concrete,to minimize drying shrinkage

Expansive agent for concrete.Expancrete is a powder admixture used to manufacture shrinkage-compensated concrete and mortars.Expancrete is suitable for water tight castings and castings that require a contrast to concrete hygrometric shrinkage (water tanks, piping, floors, etc.).Add Expancrete to the mixer at the same time as the other ingredients (cement, aggregates, water).Expancrete is used only for reinforced concrete.Consumptionfrom 5 to 8 kg per 100 kg of cement.


High-efficiency Shunan mortar expansive agent is being used in all sections of the construction fields.

In many mass concrete projects, mix high performance mortar expansive agent to make shrinkage compensating concrete, besides we adopted effective methods of warm-keeping and heat-isolation by temperature test and control, as a result, concrete crack was prevented. High efficiency Shunan concrete expansive agent familiar with low alkalinity,low dosage and high expansion,  Characteristics Expansive Additive I is powdered material, which made by grinding special mineral together with additives. The fineness is less than 10%; the specific weight is 2.90; Non-toxic, non-odour; No ammonia, no chlorine.

composition and Alkali content:

Loss  SiO2  Al2O3  Fe2O3   CaO   MgO    SO3   K2O  Na2O1.10    9.20  20.50     0.65     34.50  2.35    30.55  0.20  0.10


1. As making shrinkage compensated concrete, if the ratio of reinforcement is 0.2%-1.0%, the limited expansive rate will be in the range of 0.02-0.04%, and a prestress of 0.2-0.7Mpa exists in the concrete. 2. Comparing with the concrete without Expansive Additive I, in the condition of defined mixing amount, the free strength of the concrete with Expansive Additive I is roughly equal to that of concrete without Expansive Additive.3. The limited strength is 10~15% higher than free strength. The impermeability grade of mortar and concrete can reach over S30. 4. The elastic ratio closes to that of common concrete. Anti freezing: D150. 5. Sulphate resistance of concrete is increased. No pollution to water.

Expansive Agent Construction method:.

1. Design concrete mixing ratio according to country’s related standard. Water proof concrete mortar ratio should more than 36%. 2. The mix ratio of anti-crack, anti-permeability and shrinkage compensation concrete is commonly 8%. The mixing ratio of post-puring concrete zone(strengthen concrete zone), filling concrete is 10%. The minimum concrete mix ratio is 30kg/m3 while the maximum mix ratio is 45kg/m3. Each project mix ratio depends on testing result and makes some adjustment. Concrete expansive additive can substitute same quantity cement. The sum of concrete expansive additives and cement is more than 320kg/m3.3. Cement’s C3A content is different. When cement’s C3A content is above 8%, concrete expanding additive’s dosage should decrease in order to avoid concrete early strength loss excessively.

Mortar Expansive Agent Applicant: 1. For structural self-waterproofing construction.2. Effectively preventing cracking or leakage of concrete. 3. To extend the space length of post casting zone of cast-in-place overlength structure.4.To control the crack producing result of temperature difference in large sized structural concrete. 5. For rigid roofing. Making non-shrinkage cements..

Shunan Mortar Expansive Agent

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