Conplast P510*

Water reducing admixture

Uses

! To improve the effectiveness of the water content of a concrete mix.

! At higher dosages to provide a cost effective means of reducing concrete permeability and thereby reducing water penetration.

Advantages

! Particularly effective in improving compressive strength of mixes containing PFA and GGBFS

! Water reduction significantly improves compressive strengths at all ages and increases durability.

! Allows workability to be increased without adding extra water.

! Allows specified strength grades to be met at reduced cement content or increased workability.

! Chloride free, safe for use in pre-stressed and reinforced concrete.

Standards compliance

Conplast P510 complies with BS5075 Part 1 and with ASTM C494 as Type A and Type D, depending on dosage used.

Conplast P510 complies with the requirements of the United Kingdom Water Fittings Byelaws Scheme and is listed in the Directory of Materials as suitable for use in contact with potable water.

Description

Conplast P510 is a chloride free water-reducing admixture based on a blend of selected lignosulphonate materials. It is supplied as a brown solution, which instantly disperses in water.

Conplast P510 disperses the fine particles in the concrete mix, enabling the water content of the concrete to perform more effectively and improving the consistency of the concrete. This produces higher levels of workability for the same water content, allowing benefits such as water reduction and increased strengths to be taken.

Technical support

Fosroc provides a technical advisory service for on-site assistance and advice on mix design, admixture selection, evaluation trials and dispensing equipment.

Dosage

The optimum dosage of Conplast P510 to meet specific requirements should always be determined by trials using the materials and conditions that will be experienced in use. The normal dosage range is 0.2-0.6 litre per 100 kg of cementitious material, including PFA, GGBFS and micro-silica.

Use at other dosages

Dosages outside the normal range quoted above can be used to meet particular mix requirements. Contact Fosroc for advice in these cases. Properties

Appearance: Light brown liquid Specific gravity: Typically 1.210 +_ 0.010 Chloride content: Nil to BS5075 Air entrainment: Typically less thon 2% additional

air is entrained at normal dosages

Alkali content: Typically less than 4.0 g. Na2O equivalent per liter of admixture. A fact sheet on this subject is available.

Instructions for use

Compatibility

Conplast P510 is compatible with other Fosroc admixtures in the same concrete mix. All Admixtures should be added to the concrete separately and must not be mixed together prior to addition. The performance of concrete containing more than one admixture should be assessed by trial mixes.

Conplast P510 is suitable to use with all types of Ordinary Portland Cements and cement replacement materials such as PFA, GGBFS and micro-silica.

Effects on stiffening and set

Most water reducing admixtures produce some delay in the stiffening of concrete, although the degree may vary. Retardation is affected by factors other than the admixtures, depending on the mix details and conditions involved. Trials to assess the effects in a particular mix are strongly recommended if this aspect is of particular importance.

Major factors which may lead to an increase in retardation include the following.

a) Cement replacement materials wilI usually give greater levels of retardation than concrete mixes made with Ordinary Portland Cement at the same admixture dosage.

b) Low temperatures will give higher levels of retardation for the same admixture dosage. This is particularly noticeable if cement replacement materials are used.

c) Increased cement contents, which lead to higher total levels of admixture in a cubic meter of concrete, may lead to increased retardation being obtained.

d) Changes in cement source or chemistry may lead to variations in the retardation obtained. The amount of tri-calcium aluminate in the cement has been identified as being one of the main contributory factors in this respect, with a lower level leading to greater retardation.

Increased retardation will be obtained at higher dosage. As a guideline, dosages of 0.31 liters per 100 kg and above are likely to be in the retarding category.

Dispensing

The correct quantity of Conplast P510 should be measured by means of a recommended dispenser. The admixture should then be added to the concrete with the mixing water to obtain the best results. Contact Fosroc for advice regarding suitable equipment and its installation

Effects of overdosing

An overdose of double the amount of Couplast P510 will results in significant retardation. Provided that adequate curing is maintained, the ultimate strength of the concrete will not be impaired by increased retardation and will generally be increased. The effects of overdosing will be further increased if sulphate resisting cement or cement replacement materials are used.

Over-dosage may also cause increased air entrainment, which will tend to reduce strength. The degree of this effect will depend on the particular mix design and overdose level.

Estimating - Packaging

Conplast P510 is available in drum or bulk supply. For larger users, storage tanks can be supplied.

Storage

Conplast P510 has a minimum shelf life of 12 months provided the temperature is kept within the range of 2oC to 50oC. Should the temperature of the product fall outside this range then the Fosroc Sale Support Department should be contacted for advice.

Freezing point: Approximately – 4oC.

Precautions

Health and safety

Conplast P510 does not fall into the hazard classifications of current regulations (see notes 1and 2 below). However, it should not be swallowed or allowed to come into contact with skin and eyes. Suitable protective gloves and goggles should be worn.

Splashes on the skin should be removed with water. In case of contact with eyes rinse immediately with plenty of water and seek medical advice. If swallowed seek medical attention immediately-do not induce vomiting.

For further information consult the material safety Sheet available for this product

Fire

Conplast P510 is water based and non-flammable.

Cleaning and disposal

Spillage’s of Conplast P510 should be obsorbed onto sand, earth or vermiculite and transferred to suitable containers. Remnants should be hosed down with large quantities of water

The disposal of excess or waste material should be carried out in accordance with local legislation under the guidance of the local waste regulatory authority.

# Note 1: CPL Regulations 1984 Supply-Schedule 1 # Note 2: HSE Publication Guidance Note EH40 # See separate data sheets

Fosam Company Limitd

Jeddah Sale Office Tel: (02)608 0999 Fax: (02)635 3330 Riyadh Tel: (01)482 9303 Fax: (01)482 7562 Khamis Mushayt Tel: (07)250 0469 Fax: (07)250 0469 Makkah Tel: (02)542 0869 Fax: (02)542 0869 Jubail Tel: (03)362 3904 Fax: (03)362 3875

Jeddah Showroom Tel: (02)665 0187 Fax: (02)667 4844 Dammam Tel: (03)847 2929 Fax: (03)847 1582 Yanbu Tel: (03)322 4280 Fax: (03)391 2980 Medinah Tel: (04)845 1767 Fax: (04)846 3195 Head Office & Factory Tel: (02)637 5345 Fax: (02)637 5891

Important note: Fosroc products are guaranteed against defective materials and manufacture and are sold subject to its standard terms and conditions of sale, copies of which may be obtained on request. Whist Fosroc endeavors to insure that any advice, recommendation, specification or information it may give is accurate and correct, it cannot, because it has no direct or continuous control over where how its products are applied, accept any liability either directly or indirectly arising from the use of its products, whether or not in accordance with any advice, specification, recommendation or information given by it