Guangdong Shijia Gujian Building Materials Technology Co., Ltd.
Professional grouting material manufacturer (mainly used for) Road and bridge repairs, high-speed trains, expressways, water conservancy and hydropower projects, power plants, old building renovation and reinforcement, large machinery foundation materials, industrial flooring, and wear-resistant series, etc.... (Complies strictly with the new national standards! Sample testing available!)
High-Strength Non-Shrink Grouting Material Product Features
1. Flowability is greater than or equal to 300mm, allowing for uniform distribution and free flow after casting. 2. Self-compacting with good fluidity, it does not leak water, does not segregate, and does not require vibration; it can fill the grouting area with its own weight. 3. Early high strength with high early strength: 1d strength ≥ 30Mpa, 3d strength ≥ 50Mpa, 28d strength ≥ 60Mpa. 4. The micro-expansion grouting material uses composite expansion technology, featuring expansion before and after hardening, preventing the settlement and water loss shrinkage of the grouting material, and preventing cracking and hollowing after casting, as well as reducing the effective bearing surface. 5. Durability is attributed to inorganic mixtures, resistant to corrosion and aging. Domestic research shows: no significant change in strength after 2 million fatigue tests and 50 freeze-thaw cycle tests. The strength increases significantly after soaking in engine oil for 30 days. 6. Environmentally friendly, non-toxic, harmless, non-corrosive to steel reinforcement, and non-polluting to water quality and the surrounding environment. 7. Suitable for winter construction, allowing outdoor work at temperatures as low as -10℃.
Grouting material
High-strength, shrinkage-free grout product applications
(1) One-time and second-time grouting for equipment foundations requiring high-precision installation. (2) Reinforcement embedding and anchor bolt anchoring in construction and geotechnical engineering. (3) Grouting for structural reinforcement and renovation projects, including beam-column joints, expansion joints, and construction joints. (4) Emergency repair construction for roads, bridges, tunnels, airports, etc. (5) Anchor construction for railway sleepers. (6) Column wet encased steel reinforcement for filling angle steel and column gap joints.
High-strength, non-shrink grouting material recommended dosage
Reference dosage calculation2.2 to 2.4 t/m3 as the basis for calculating actual usage. It is precisely because the grouting material has high strength, far exceeding the strength achievable with cement, and alters the shrinkage characteristics of cement during curing, that it is termed "high-strength, non-shrinkage grouting material"!! There are different types of grouting materials, such as CGM, HGM, etc., which are determined based on the standards of various architectural research institutes. They do not represent the quality of the product. Specific usage requires testing.
High-Strength Non-Shrink Grouting Material Application Steps
1. Prepare mixers, grouting equipment, molds, and curing materials. Clean the grouting space and pre-wet the concrete surface. 2. Set up the molds and seal the joints with cement (sand) mortar and plastic tape to ensure no leakage of water or grout. 3. Add water to the grouting material at 12-15% of its weight and mix (mechanical mixing for 2-3 minutes, manual mixing for over 5 minutes). 4. Pour the well-mixed grouting material into the grouting area from one direction. Use bamboo sticks or steel rods for guidance if necessary, and gently vibrate or tap the mold. 5. After construction, immediately cover with plastic film and add straw mats or cotton blankets for 3-7 days of moist curing. 6. Use between -10℃ and 40℃. Strictly prohibited from adding any admixtures or external materials to the grouting material.
Unit DosageApprox. 2200 kg/m3. Note: The national standard specification for grouting materials, "GB50448-2015 Application Technical Specification for Cement-based Grouting Materials," specifies compressive strength according to "GB177-85 Test Method for Compressive Strength of Cement Paste," and expansion rate according to "GB119-88 Application Technical Specification for Concrete Admixtures."
