Estomix is a chloride free, organic liquid admixture consists of wood naphta, when added to fresh concrete, reacts with products of the cement hydration process to produce a hydrophobic material, which repels external water thus drastically reducing water absorption into the concrete.
Estomix has been tested by SIRIM BHD, in accordance to BS 1881 Part 122:1983 on Water Absorption, BS 6920, on The Suitability for Contact with Drinking Water, and complied with the specification in this data sheet.
|Specific gravity||1.10 at 20 °C|
|Chloride content, BS 5075||Nil|
|Water Absorption Test, %
BS 1881 Part 122:1983
BS 6920 Part 1:2000
|< 1.8 x 10-11|
Estomix meets the water absorption requirements of draft European standard EN 934-2.
Many variables in concreting materials and conditions can affect the use of an Estomix. Trials should be carried out using relevant materials and conditions in order to determine the optimum mix design and Estomix dosage to meet specific requirements.
A typical performance example from evaluation studies of Estomix is included on this data sheet. The values quoted are representative of results obtained and are provided as illustration of the performance.
Because of the variability of concreting material, the results should only be taken as typical of the performance to be expected. Results quoted are not necessarily directly comparable with result obtained elsewhere for Estomix.
Water absorption test in accordance to BS 1881 Part 122 as below;
|Cement Content||420 kg|
|Water Cement Ratio||0.38|
|Dosage of Estomix (%)||Water Absorption (%)|
Trial Mix shall be conducted for concrete intended to utilize Estomix, to waterproof a particular concrete structure.
The targeted compressive strength of a particular grade of concrete shall be complied with BS 5328:1981, or its latest revision. The use of Estomix shall be under adequate supervision. For further advice contact Estop Technical Department.
Estomix may be dispersed to the gauging water at the rate of 1 litre per 100 kg of Portland cement. For severe conditions, a maximum of 1 dose is recommended.
Estomix is also water reduction agent. Therefore the maximum free water cement ratio shall not be more than 0.55, before dosing of Estomix.
The use of Estomix at typical dosage will illustrate an excellent result on water absorption, as shown in Typical Performance Example.
An overdose of double the intended dose of Estomix may result in increased retardation and workability; hence reduce the short-term strength development. Long term strength is unlikely to be affected.
Should segregation of concrete occur, due to excessive increase in workability, the concrete shall not be used.
The correct quantity of Estomix should be measured by means of a recommended dispenser. The Estomix should then be added to the concrete with the mixing water to obtain the best results. For further advice on equipment and tools contact Estop Technical Service Department. Concrete with higher Grade would require higher cement content.
As with all structural concrete, good curing practice should be maintained, particularly in situations where an overdose has occurred.
Water spray, wet Hessian or an Estocure spray applied curing membrane should be used.
Good concrete practice must be followed at all times. Well graded aggregates must be used and minimum cement content of 300kg/m³ is recommended for Grade 30 and below.
Estop’s Estopper Range PVC waterstop shall be provided between lifts of concrete and joint in floor bays.
|Estomix||210 litre drum
20 litre pail
Estop offers a technical support package to specifiers, end-users and contractors, as well as on site technical assistance.
Estomix has a minimum shelf life of 12 months.
Estomix does not fall into the hazard classification of current regulation. Suitable protective gloves and goggles should be worn. If swallowed seek medical advice immediately. Do not induce vomiting.
Estop manufactures and offers a wide range of complementary products, which includes waterstops, waterproofing products, grouts, anchors, specialized flooring products. In addition, a wide range of products formulated for repair and refurbishment of spalled concrete are available.