Silica dense agent – concrete silica dense agent – waterproof silica dense agent

1. Product introduction

Siliceous compacting agent is composed of a variety of materials such as waterproof, impermeable, anti-cracking, expansion, and dense components. Adding this product can change ordinary concrete It is high-performance concrete with excellent quality and meets the requirements of HPC. At the same time, it can be used as an HPC admixture.

2. Characteristics and dosage

Concrete siliceous density agent is a powder material with a moisture content of <5%, and the dosage accounts for 3% of the weight of cement.

3. Scope of use

Silica compacting agent is used in rigid waterproof concrete projects in construction, water conservancy, bridges, electric power, roads, airports, seaports and other projects. It is especially suitable for the construction of underground, roof and civil engineering projects with waterproof, moisture-proof and anti-seepage requirements, as well as the construction of water conservancy, seaports, electric power, roads and other engineering projects that require more than 500 freeze-thaw cycles.

4. Implementation Standards

The implementation standards for siliceous dense agents are JC474-2008 “Concrete Waterproofing Agent Standards”.

5. How to use

In order to meet the user’s requirements for structural self-waterproofing, it is designed for large structures such as underground box foundations, raft foundations, water plants, sewage treatment plants and swimming pools. Concrete pouring projects are prone to problems such as dry shrinkage, temperature differences and other cracks. We carefully launch Jade Brand JH high-performance siliceous density agent to meet the purpose of compensating shrinkage with a water expansion rate of 1.5×10-4 in 14 days.

Silica compacting agent has excellent waterproof and anti-permeability and shrinkage compensation functions. It is non-flammable, non-toxic, non-polluting, non-erosive and non-corrosive, and has obtained the drinking water sanitation license from the Anhui Provincial Department of Health. The dosage is 3% of the cement dosage, the mechanical mixing time should be greater than 3 minutes, and the water consumption, construction management and maintenance methods should be strictly implemented in accordance with the relevant specifications and delineations of concrete.

Concrete self-waterproofing projects such as raft or box-shaped underground foundations, basement structures, water plants, sewage treatment plants, culverts, tunnels, etc. should meet the following requirements:

1. Should be strictly Carry out construction according to design requirements. It is appropriate to use Portland cement or ordinary Portland cement larger than 325#. It is prohibited to use pozzolanic cement and slag cement, and it should comply with international (GB175-85) regulations. The coarse aggregate is medium and coarse sand, and the mud content is It should be less than 2%; the mud content of the aggregate should be less than 1%.

2. Reducing water consumption is a prerequisite for reducing capillary pores and increasing density. Measures such as strict control of assembly methods, slump, and timely maintenance should be adopted during construction to avoid dry shrinkage cracks and temperature cracks.

3. JH siliceous density agent mixed with 3% cement is an effective way to improve waterproofing and impermeability and compensate for shrinkage.

4. Lead plates and rubber waterstops should be added to deformation joints, steel plate waterstops should be added to construction joints, and an additional layer of 500-meter-wide dense agent waterproof mortar should be made (three times). The dosage of post-cast concrete density agent is 3% of the cement dosage.

6. Packaging, transportation and storage

Concrete siliceous density agent is packaged in 30kg/bag. During transportation and storage, it should be protected from rain and sun to avoid moisture and clumping.

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