Black cement - Rapid-hardening, quick-drying steel fiber micro-expansion fine aggregate concrete

Black Cement - Rapid Hardening, Quick-Drying, Steel Fiber Micro-Expanding Fine Aggregate Concrete

Black rapid-setting cement mortarA high-grade mixed cement mortar for black manhole cover repairs, featuring the durability of inorganic materials; it boasts high compressive strength, rapid curing, and excellent adhesion properties.

Application Scope

1Rapid reinforcement and repair around manhole covers.

2Gypsum leveling mortar for buildings using stainless steel wire mesh.

3Repairing concrete damage in roads and bridges.

4Runway and highway lane repairs and emergency maintenance to damaged sections.

5Repair and emergency restoration of damaged concrete floors in industrial factory buildings.

Primary Application

Primarily suitable for rapid replacement, reinforcement, and repair of manhole covers, typically.2Hours for traffic release. Also suitable as a leveling mortar for carbon fiber reinforced leveling, high-performance masonry mortar, and as a protective leveling mortar for reinforcing steel wire in buildings. The product, enriched with various polymer modifiers, adhesive powders, and crack-resistant fibers, offers excellent workability, adhesion, impermeability, anti-flaking, frost-thaw resistance, carbonation resistance, crack resistance, and corrosion inhibition of reinforcing steel, along with other properties.

Road Surface Sanding Repair Mortar Features

1Easier Construction: Offers good construction and ease of use. No vibration is required during construction; simply add water on-site and mix for use.

2Early strengthening:2Compressive strength up to 1 hour20MpaMaximize engineering progress.

3Strong anti-seepage performance: Excellent resistance to seepage.1.7MpaWaterproof and pressure-resistant, in compliance withP16Requirements for concrete impermeability performance.

4Excellent bonding performance: When using concrete surface treatment agents, the bonding strength to new and old concrete is greater than1.8MpaIt ensures a tight bond between the concrete patching mortar and the repaired base to a great extent.

5Can be used for winter construction: The polymer patching mortar allows for environmental temperatures as low as-5When temperatures are above °C, perform exterior construction for the repair of door facings, horizontal surfaces, and ceiling surfaces on concrete structures.

6High durability:50After one freeze-thaw cycle, there is no significant change in strength, soaked in engine oil.30The天后intensity has increased.

Grey-black manhole cover patching materialCombines the strength of cement concrete with the flexibility of asphalt concrete, exhibits a uniform foaming rate during curing, resonates with sound waves, and adjusts to thermal expansion and contraction. It bonds with asphalt mixtures, integrating the surface into a cohesive unit without forming peripheral cracks. It can rapidly develop strength and withstand heavy load crushing without fracturing.

When the concrete elastic modulus is5×10^4MPaThe term is modulus, the higher the concrete's modulus of elasticity, the greater its durability.

This material differs from the quick-drying cement available on the market. This product features no need for curing, elastic modulus, non-diminishing strength, wear resistance, bonding power, impact resistance, and shear resistance. It is an ultra-high early strength, non-shrinkage cement material with excellent fluidity, bonding, and toughness. It contains no chlorides and has no corrosion effect on steel reinforcement. It maintains good workability even under moist conditions and at a certain consistency when mixed and placed in the concrete ring beam of the well seat.,Integrates the wellhead with the wellbore.,Guaranteed no displacement or deformation under vehicle impact loads.

Beijing City Sales Steel Fiber Manhole Cover Black Patching Concrete Manufacturer

Material Control:

　　1 Road rapid repair material is mixed manually, with the concrete quantity estimated based on the flat size of the manhole ring seat, ensuring a one-time sufficient amount and fast installation of the cover.

　　2Well casing concrete bedding(Install concrete)The thickness

The thickness of the subgrade concrete should not be less than6cm。

　　3Preparation before concrete pouring

　　1) Before installing the well ring, the base of the brick well shaft should be cleaned thoroughly, free of debris. The original road structure should not have loose materials, and the bonding surface should be firm and stable.

　　2) The inner wall of the wellbore should be shored to prevent slurry leakage.

　　3) Measure the stroke by adopting the double cross-line method at the fulcrum.

　　4Concrete pouring requirements

　　1) When pouring concrete, it should be done in two layers. First, pour the lower part below the well seat, compact it after vibration, then pour the upper part. The concrete should be level and dense, the surface should be rough for better adhesion, and it should envelop the well ring to prevent displacement.

　　2)Concrete surfaces should be strictly controlled, and the paving thickness of asphalt concrete should be ensured.

　　3)After removing the template from the wellbore, any defects on the concrete surface must be repaired immediately. If honeycomb holes are found, the work should be redone and the template reinstalled.

　　4)After using modular quick-setting concrete to cast the well ring, the surface layer is leveled with semi-rigid elastomeric concrete.

5)Remove template, set cone bucket protection1-2After an hour, accessible by transportation.

Grey-black manhole cover repair materialFeatures

1Road Rapid Repair Material, inorganic non-metallic material, mainly used for quick repair of various damaged concrete.

2The road rapid repair material features fast setting time, good adhesion, strength, excellent compatibility with regular concrete, and durability.

（1Quick-setting high-strength:15It takes about a minute to set.1Ready for use in hours (concrete mixed with stones as required, under suitable construction temperatures, )1Hourly Intensity ReachedC30，7Sky strength reachesC50(above).

（2Good bonding properties: Flexural strength greater thanC30Common Concrete (Testing Method: After refilling the mortar, retest the flexural strength).

（3Excellent matchability: High volume stability, negligible shrinkage rate, and a thermal expansion coefficient nearly identical to ordinary concrete.

（4Products, wide temperature range: Fast repair material series, guaranteed-5℃To45℃Can be applied at room temperature.

（5Durability: Stable frost-heave resistance and chemical corrosion resistance.