Polymer Crack-Resistant Rendering Mortar
Details
聚合物抗裂抹面砂浆
Compliance Standard: JG 149-2013
Features: Crack-resistant, high bonding strength, thin-layer application, durable
Application Method:
1. Substrate Preparation:
The substrate must be solid, free of oil contamination and loose materials. Construction may proceed only after the insulation board installation has passed inspection.
2. Mixing Ratios and Preparation:
Water-to-cement ratio: 1:4 (by weight). Mix with an electric mixer until a uniform paste forms. Allow to stand for 5 minutes to cure. Mixed mortar must be used within 2 hours to prevent hardening and loss of effectiveness.
3. Application and Reinforcement:
Apply in two coats:
First coat: 2mm thick → Embed mesh fabric (overlap ≥50mm) →
Second coat: Cover to total thickness of 3–5mm.
4. Environmental Control:
Temperature: Apply between 5–35°C. Avoid excessive water addition in high temperatures. Follow winter application standards in low temperatures.
Prohibited Conditions: Do not apply during rain or winds exceeding force 5.
Compliance Standard: JG 149-2013
Features: Crack resistance, high bond strength, thin-layer application, durability
Application Method:
1. Substrate Preparation:
Substrates must be solid, free of oil contamination and loose materials. Application is permitted only after insulation board bonding has passed inspection.
2. Mixing Ratio and Preparation:
Water-to-cement ratio: 1:4 (by weight). Mix thoroughly with an electric mixer until a uniform paste forms. Let stand for 5 minutes to cure. Use mixed mortar within 2 hours to prevent hardening and loss of effectiveness.
3. Application and Reinforcement:
Apply in two layers:
First layer: 2mm thick → Embed mesh fabric (overlap ≥50mm) →
Second layer: Cover to total thickness of 3–5mm.
4. Environmental Control:
Temperature: Apply between 5–35°C. Avoid excessive water addition in high temperatures. Follow winter application standards in low temperatures.
Prohibited Conditions:
Do not apply during rain or winds exceeding force 5.
Definition of HJ Prefabricated Non-Removable Bottom Formwork Reinforced Truss Composite Slabs and Their Differences from Common Composite Slabs?
HJ Prefabricated Non-Removable Bottom Formwork Reinforced Truss Composite Slab: Serves as the primary non-removable integrated formwork.
Manufactured using intelligent production methods, it features a 20mm fine aggregate concrete base slab. The reinforced truss is anchored to the base slab through fixed connections, forming an integrated structure.
Construction Phase: The base slab functions as formwork, eliminating or minimizing the need for additional support.
Service Phase: The bottom formwork and the subsequently poured concrete jointly bear loads, serving as the lower chord reinforcement protective layer. It functions as an integral structural component of the floor slab, eliminating the need for formwork removal.
What are the core competitive advantages of our company's HJ prefabricated steel truss composite panels with non-removable bottom formwork?
What are the quality inspection standards for HJ prefabricated steel truss composite panels with non-removable bottom formwork?
Entry Inspection Phase -- Basis: Appendix E of Industry Standard JC/T “Technical Specifications for Application of Non-Removable Bottom Formwork Reinforced Truss Composite Panels”
Test Method: (Using 2-80 as an example)
Randomly select 2 panels per 100 panels as test specimens. Distribute 390 kg/m² load weights evenly across the single test panel in 3 stages (support span 200 cm). After each 130 kg/m² loading, perform watering tests from the top surface and inspect water penetration on the bottom surface at 10-minute intervals. After completing three loading cycles and three watering tests, the panel is deemed qualified if:
- No single crack exceeds 50 mm in length
- No crack exceeds 0.1 mm in width
- ≤2 cracks per panel
Final Acceptance Phase - Basis: Appendix G of Industry Standard JC/T Technical Specifications for Application of Reinforced Truss Composite Panels with Non-Removable Bottom Formwork
The bottom surface of HJ prefabricated non-removable bottom formwork steel truss composite panels shall not exhibit severe defects. For existing crack defects, the construction unit shall propose a technical treatment plan (refer to Appendix G) and implement it after approval by the supervision unit. Treated areas shall undergo re-inspection.
Crack repair for HJ prefabricated non-removable bottom formwork steel truss composite panels employs methods such as surface sealing, injection, and filling with sealant.
Are there any representative project cases? For which types of structures is this product suitable?
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