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"STALTOP" 700 cement based concrete surfaces hardener with corundum additive

"STALTOP" 700 cement based concrete surfaces hardener with corundum additive

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Product description

Cement based ready for application concrete surface hardener with corundum additive, contains modified polymers improving the product quality and expanding application areas, to be applied as powder onto freshly laid concrete surfaces subject to traffic of heavy vehicle and motor truck loads. The product conforms to the requirements of the AZS 039-2000 (TS 11140-1993), GOST 10181-76, and GOST 28013-98, standards.

Fields of Application

This surface hardener can be applied in the following areas:

  • floors in industrial facilities;
  • hangars and mechanical shops;
  • garages and car parking areas;
  • storage facilities;
  • loading and unloading areas;
  • power plants;
  • sea-ports.

Advantages

  • easy to apply onto freshly  laid concrete floor surfaces;
  • creates monolithic layer with concrete once brought to uniform conditions by absorbed water contained in the laid floor concrete due to modified polymers and specially sized corundum particles in its composition;
  • the surface treated with this product is 4-6 times harder compared to the standard concrete surface;
  • resistant to frost, hot weather, and salts contained in rain waters;

Application procedures

Preparation of the surface. At least one day before laying fresh concrete onto the existing concrete surface the latter should be thoroughly saturated with water, however there should be no free water left on the surface. STALTOP 700 should be strewn onto the freshly laid concrete surface. Before application the floor formwork should be arranged in square sections, cracks control expansion joints should be provided, and concrete should be laid in accordance with these requirements. To prevent formation of cracks in the freshly laid concrete the expansion gaps approximately 1 cm deep should be provided along the perimeter of the square sections once the concrete is laid, and foam plastic panels should be places in the mentioned gaps. After the concrete is laid the foam plastic panels should be removed, and the expansion gaps should be filled with Fugaton elastic joint filling mixture designed for concrete. It allows free expansion of the freshly laid concrete and prevents formation of cracks.

To provide even edges to the freshly laid concrete, the floor formwork should be cleaned and lubricated with МА Оil 100 mould oil prior to each laying operation. When pouring the concrete, the floor formwork top edges should be at the same level with the concrete layer surface. Installation of intermediate reinforcement elements into the formwork will eliminate continuous movement of the concrete this reducing the stresses applied to the joints filled with elastic joint filling mixtures, this in its turn will increase the useful life of the joint filling mixture.

Structure. The metal structure size should not exceed the overall dimensions of the formwork. When assembling the structure from ready cut-and-bent reinforcement elements the steel elements should be laid one over another. To prevent the risk of crack formation on the concrete surface caused by heavy loads, the crack-control joints should be provided. Due to movement within the joints in horizontal or any other direction, the intermediate structure should not exceed the overall dimensions of the formwork, and should be attached to the formwork reinforcement elements.

Primer. To increase the adhesive force between old concrete and the fresh concrete layer when laying monolithic concretes, the epoxide (resin) based adhesive or a primer increasing adhesive force should be applied onto the rough surface of old concrete before pouring fresh concrete.

Pouring of concrete. Primarily the formwork should be places in accordance with guide screeds. Prior to starting concrete pouring procedure the required number of STALTOP 700 sacks should be placed near the formwork. The thickness of the laid concrete layer should be maximum 7 cm, the water/cement proportion should be at least 0.45, and the concrete grade should be S 25 or higher. When pouring the concrete into the square-sectioned formwork, the concrete should be tampered using a vibrator tool. Before water occurs on the concrete surface, the surface should be finished using a screed or wooden trowel, and the water from the surface should be removed using a long wooden trowel.

The composition of concrete or the screed floor subject to STALTOP 700 application should be prepared in accordance with the loads and soil conditions in the area of application. The surface hardener increases resistance of the concrete top layer to the weathering and impacts, but does not impose any influence on the concrete strength, therefore any failures resulting in occurrence of cracks on the concrete surface may cause the same problems in the concrete surface hardener.

The required amount of the concrete surface hardener for the operation should be available at the work site.

Before the concrete surface hardener application the lower guide screed edges should be V-cut to form approximately 5х5 mm deep triangle cutouts along the joints. The cut area should be filled with the STALTOP 700 mixed with a small amount of water. This procedure prevents spalling of the edges under loads. In order to prevent segregation of the additive substances in the composition of the concrete surface hardener during application, the product should be strewn thickly. The application process may differ depending on the actual ambient or weather conditions.

The strewing works may start once the concrete hardening has reached such degree when walking on the its surface leaves maximum 0.5-1.0 cm deep footprints.

The product should not be strewn by portions. As far as possible the surface should be strewn equally and screeded using an appropriate tool.

In case the product is applied by portions, all the extra amounts of the product should be immediately removed and the surface should be screeded.

The first step of the procedure is to strew 2/3 of the total product amount planned for application onto the concrete surface, and to screed it with a float trowel.

Once the applied product has changed its color absorbing water from the concrete, it should be finished using special equipment (concrete helicopter) in order to facilitate bonding between the surface hardener and the concrete layer. Then the rest of the product should be strewn onto the concrete surface similar to the above step, and the specified procedures should be repeated.

Prior to finishing the surface with the help of the concrete helicopter, the extra amount of the product strewn earlier onto the concrete surface should first be removed with a brush.

After the first step finishing, the second step finishing is performed  using concrete grinder blades. Grinding is performed till the desired degree of glazing is achieved. In order to prevent formation of small cracks, immediately after application of the hardener, the moisture retaining МА Кür product should be applied onto the surface. This procedure enhances the effect of the STALTOP 700 application and helps to obtain the best results. The МА Кür product may be used both in summer and in winter.

The hardener application period may vary depending on the quality and grade of the concrete used and on the ambient conditions. In warm weather this period is shorter, while in cold weather it is increased. Prior to application pay attention to the hardening period of the concrete.

Recommendations. At the time of the STALTOP 700 product application the ambient and soil temperatures should be between +50C and +300C. The process of the surface hardening should be controlled by qualified specialists. Easily applied the concrete surface hardener increases resistance of the surface to weathering and impacts, but does not impose any influence on its mechanical strength. On this reason the concrete subject to the surface hardener application should be prepared taking into consideration all the possible effects.  When applying STALTOP 700 the thickness of the freshly laid concrete should be at least 7 cm, the water/cement proportion should be at least 0.45, and the concrete used should be grade S 25 or higher. After use all hand tools and devices should be cleaned with water. After hardening the STALTOP 700 product can be removed from the surface by mechanical means only.

Technical specifications

Color

Red, grey, green

Composition of the product

Cement based powder mix containing modified polymer,  and corundum additive substances

Strength limits:

  • compression

 

70 N/mm2

Abrasive strength:

  • By Capon method

 

3 (100 turns)

Packing

25 kg sacks made of 2- or 3-layer craft paper and 1 layer of polyethylene

Consumption

Depending on the purpose and traffic loads the product consumption may be within 4-8 kg/m2. In case light color is selected the minimum consumption will be 7 kg/m2.

Shelf Life and Storage Method

The product can be stored during 12 months in original sacks in dry conditions.

Warnings

  • taking into consideration that the STALTOP 700 product is a complex composition mixture, immediately rinse it with water in case of contact with skin or eyes;
  • do not add any substances not indicated in the application instructions;
  • parameters indicated above have been received on the basis of laboratory tests conducted in the ambient conditions of +230C±20C temperature and 50% +5% humidity. Depending on the actual ambient conditions these parameters are subject to change.

Warranty and technical support

  • information indicated in technical specifications is based on scientific and experimental data;
  • Matanat А company is responsible for the product quality only;
  • with the exception of cases of works executed under the supervision of the company specialists, Мatanat А company shall not be liable for any problems occuring due to improper use of the product by other persons;
  • the company reserves the right to make changes in its product in consequence of scientific-and-technical development;
  • for technical support and/or more information please do not hesitate to contact the Matanat А company!

These products are used to

"STALTOP 500" cement based hardener with quartz additive for concrete surfaces

"STALTOP" 600 cement based concrete surface hardener with metal additives

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