Cem-Grout

CEM-GROUT is a non-shrink, cementitious precision grout that provides extended working time and exceptional physical performance. Cem Grout is a blend of Portland cement, graded aggregates and admixtures making is highly strong, tensile, and reliable.

Key Features

  • Excellent initial flow and flow retention High ultimate strength and low permeability
  • ensure durability of the hardened grout Suitable for pumping or pouring over a large range of application consistencies and temperatures
  • Shrinkage compensating properties
  • Good flow characteristics
  • Adjustable consistency
  • Good impact and thermal resistance
  • Non-corrosive to steel or iron

Application

  • Machine base plates/ heavy equipment
  • Bedding joints in precast concrete sections
  • Filling voids, cavities, gaps, and recesses
  • Sealing around penetrations
  • Bridge bearing pads
  • Mass grouting
  • Anchor bolt

Compressive Strength

1 day 4,000 psi ( 27.6 MPa)
7 day 8,250 psi ( 56.9 MPa)
28 day 10152 psi ( 70 MPa)

Flexural Strength

7 days 1,100 psi (7.6 MPa)
28 days 1,300 psi (9.0 MPa)

Freeze-Thaw Stability

300 cycles >99%

Splitting Tensile Strength

7 days 500 psi ( 3.4 MPa)
28 days 750 psi (5.2 MPa)

Shear Strength

28 days 2,500 psi ( 17.2 MPa)

Coverage

0.4 ft3 (0.01 m3) per bag at fluid consistency (Coverage figures do not include allowance for surface profile and porosity or material waste)

Application Steps

Mixing

  • Make sure all forming, mixing, placing, and clean-up materials are on hand.
  • Add the appropriate amount of water of clean potable water (approx. 70 °F) into a suitably sized and clean mixing container, using a calibrated measuring jug, or similar, to ensure strict control of the water content (do not over-water).
  • Add 1 bag while continuing to mix with a low-speed drill (400-600 rpm) and mixing paddle or a jiffy paddle or in an appropriate mortar mixer.
  • Once all the powder has been added, mix for approximately 3 minutes, until a lump-free and uniform consistency is achieved. Do not over mix.
  • For warmer temperatures use cold water and for colder temperatures use warm water.
  • Refer to Guidelines when there is a need to place this grout in cold & hot temperatures.

Application

  • Within 15 minutes after mixing, place grout into forms in normal manner to avoid air entrapment.
  • Vibrate, pump, or ram grout as necessary to achieve flow or compaction.
  • Mixed grout in mass will result in faster than expected setting times.
  • The product must be confined leaving minimum exposed surface.
  • After grout has achieved final set, remove forms, and shape exposed grout shoulders to designed profile.

Curing Treatment

  • Wet cure for a minimum of 3 days

Cem-Hard

CEM-HARD is a high quality durable cementitious based, non-metallic, non-oxidising concrete floor hardener free from organic impurities. This hard-wearing dry shake powder is a well-manufactured, graded composition of selected cement, additives, graded aggregates & polymers to ensure ease of placing and finishing. This is best suited for residential, commercial and industrial floors to deliver a monolithic and high abrasion-resistant floor. The finished surface with floor hardener provides better impact resistance and also protects the surface from gas, oil and chemical attack owing to its non-skid, anti-slip properties.

Key Features

  • Abrasion monolithic surface hardening compound
  • Binds surface concrete with base
  • Chemical resistance and aesthetic appeal
  • Resistant to rust and stain
  • Prevents shrinkage and cracking
  • Smooth and hard surfaces prevent dust generation
  • Low Water absorption

Application

Trucking lanes, Loading bays, Car parks, workshops, machine shops, spillways, ramps, heavy traffic areas.

Chemical Base

Natural mineral aggregates are graded and mixed with cement, admixtures.

Shelf Life

6 Months from the date of packing.

Storage Conditions

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +10 °C and +30 °C.

Bulk Density

1.5 ± 0.1 kg/L at +27 °C

Abrasion Resistance

1.70 mm wear loss (IS:1237)

Compressive Strength

≥ 70 N/mm2 (IS:4031 Part 6)

Layer Thickness

2.5–3.0 mm at dosage of ~5.0 kg/m2

Ambient Air Temperature

+5 °C min. / +35 °C max.

Relative Air Humidity

30% min. / 98% max.

Substrate Temperature

+5 °C min. / +35 °C max.

Applied Product Ready for Use

Foot Traffic Fully Serviceable
72 hours 7 days

The above values are at substrate temperature of +27 °C and dependent upon the concrete reaching its design strength for serviceability and will be affected by changing ambient conditions, particularly temperature and relative humidity.

Consumption

Application Consumption
Light duty 3.5–4.0 kg/m2
Medium duty 4.5–5.0 kg/m2
Heavy duty 5.5–6.0 kg/m2

Substrate Quality

  • The concrete deliveries must be of consistent quality.
  • A concrete slump in the range 75 to 110 mm will normally give best results.
  • The slab must be of good quality concrete with a minimum water/cement ratio consistent with the production of a fully compacted slab.
  • The compressive strength must be a minimum of 20 N/mm2.
  • Air Entrained Concrete is not a suitable substrate for the application of dry shake hardeners.

Application

Application time for dry shake products is influenced by every variable which affects the placing of concrete, and can therefore vary substantially, depending on the prevailing conditions.

Depending on the conditions, remove the surface bleed water or allow it to evaporate. Use onto the screed concrete evenly in 2 stages, first stage 60% and second stage 40%. Care must be taken to apply the product without creating ripples etc. in the concrete surface.

The first application must be worked into the slab immediately followed by application of the second stage quantity of Cem Hard. Final finishing, closing pores and removing undulations can be achieved either by hand or powered trowel.

Please also note

  • Never add water to the surface where the dry shake has been applied.
  • The product results in the slab surface becoming stiff more quickly than usual. Careful trimming must take place along the edges where adjoining slabs are to be poured.
  • Periodical checking of the condition and development of the concrete will determine the correct time frame for each stage and sequence of application.
  • For mechanical application with automatic spreader and laser screed, the spreading can start almost immediately after the concrete has been leveled to allow for the hydration of the dry shake. Compaction with the trowel can start as soon as the weight of the power trowels is supported by the
    concrete.
  • For manual application, the dry shake must be spread once the concrete can be stepped on, without leaving a print deeper than 3–5 mm.

Curing Treatment

Adequate curing is extremely important. Curing should commence as soon as the final set has occurred, just before the surface starts to dry. Conventional moisture curing procedures such as water spray, ponding, wet burlap or plastic covers can be used, if precise color uniformity is not essential. Moisture curing should be carried out for a minimum of 48 hours. Most efficient method of curing is by using a curing compounds which conform ASTM C 1519 or DOT specifications.

Precautions

PRECAUTIONS Timing of application is critical. Pre-mature application results in excess water being absorbed by CEM-HARD, which leads to lowered strength and dusting on the floor surface. Another problem could be dense aggregate formation, leading to sinking. Delayed application will result in insufficient moisture to ensure hydration, resulting in improper\ application, pitting & crazing of the surface.

 

Repair-Creto

REPAIR-CRETO is a general purpose, non-shrink, cementitious micro concrete supplied as a ready to use dry powder. The addition of a controlled amount of clean water produces a flowing non-shrink grout for gap thicknesses up to 100 mm.

It is a blend of cement, graded fillers and chemical additives which impart controlled expansion in the plastic state whilst minimizing water demand. The low water demand ensures high early strength. The graded filler is designed to assist uniform mixing and produce a consistent grout.

Key Features

  • Extended application time
  • Increased curing efficacy
  • Improves bond strength to substrate
  • Eliminates cement slurry application over plasters
  • Faster rate of application
  • Reduces wall porosity and void
  • High ultimate strength and low permeability ensure the durability of the hardened grout.

Chemical Base

  • Portland cement, selected fillers and aggregates, special additives

Shell Life

  • 6 months from date of production

Maximum grain size

  • Dmax : 2.36 mm

Shrinkage

  • Nil

Applications

  • Highway bridges and culverts
  • Tunnels and mines
  • Dams and reservoirs
  • Car parks and basements
  • Power stations
  • Sewerage and water treatment structures
  • Anywhere where localized deep repair is required
  • Anywhere additional thickness is required (column and beam jacketing, etc.)
  • Structural strengthening of structure by section enlargement

Storage Conditions

  • The product must be stored properly in undamaged and unopened, original sealed packaging, in dry conditions at temperatures between +5 °C and +35 °C.
  • Protect from moisture, direct sunlight and frost.

Compressive Strength

Curing Time Compressive Strength
1 day 25 N/mm2
3 days 35 N/mm2
7 days 45 N/mm2
28 days 60 N/mm2

Values measured at water: powder = 0.15, cube size 70.6 mm, curing temperature +27°C.

Tensile Adhesion Strength

≥ 3 N/mm2 (28 days, +30 °C) (ASTM C496)

Direction For Use

Surface Preparation:

  • The application surface should be rigid and free from oil, grease, paint, loose plaster, or any other dirt particles, Dampen the surface before the application of rapid repair material.

Mixing:

  • Pour 4-6 liters of potable water into a clean container and then add 1 bag (40 kg) of Brij Additives Rapid Repair.
  • It can be mixed by hand. Use of a mechanical mixer or electrical stirrer is recommended for better results. Mixing should be done for 5-10 minutes, depending on the speed of the mixing equipment. Leave the mix to slake for 5-10 minutes and remix before use.

Application:

  • The mixture should be applied within one hour of preparation. If the concrete surface is smooth and dense, it’s recommended that the surface be made rough for better adhesion of the plaster layer.
  • In normal weather, Brij Additives Repair Creto doesn’t need watering for the first 24 hours. After the plaster is completely dry, curing should be done 1 time for 1 day. In abnormal weather conditions.

Flexural Strength

Curing Time Compressive Strength
7 days 6 N/mm2
28 days 9 N/mm2

Values measured at water: powder = 0.15, curing temperature +27°C.

Expansion

1 to 4 % (Unrestrained expansion) (ASTM C1090)

Precautions

  • Always add powder to liquid and not liquid to powder.
  • Do not apply to wet or uncured concrete surfaces.
  • Do not apply at temperatures of 3°C or less.