SBR latex; Styrene Butadiene LatexACTION MECHANISMS OF SBR LATEX 1) SBR can reduce W/C for the same workability or increase workability for the same W/C. Polymer particles as well as entrained air bubbles have a ball bearing effect in the mixture. They “lubricate” the mixture particles thus reducing internal friction coefficient. Workability improvement is further enhanced by the dispersion capabilities of the contained surfactants. 2) SBR latex due to its air entraining properties reduces bleeding considerably. This leads to an abrasion resistant surface. Though, excessive air entrainement should be avoided and most probably an antifoam agent should be used in the formula. Prolonged mixing duration entrains more air.
3) SBR latex used in cementitious waterproofing brushable products improves dramatically their water retention capability. This is a most desirable effect leading to a better hydration procedure. This water retention improvement is due to the polymer network that somehow blocks the water in the mixture. 4) SBR addition increases the water resisting properties of modified concrete and mortars. As water evaporates, the SBR particles stick together – this is called coalescence – to form an interconnected polymer network inside the cementitious matrix. This flexible network both blocks the pores and bridges microcracks to a certain extend. Less and thinner cracks and less voids increase water impermeability.
5) SBR latex increases adhesion of aggregates to cement paste. It also enhances adhesion of cement mixes to smooth substrates: dense concrete, steel etc. This is due to the powerful bonding power of the polymer matrix.
EFFECTS OF SBR ADDITION ON PROPERTIES OF CEMENT MIXES 1. Increases tensile, flexural and impact strengths. Compressive strength remains virtually unaltered. In high dosages it could slightly decrease.2. Overall durability increases.3. Induced flexibility increases creep.4. Setting times are generally reduced. Placement time also.5. SBR addition reduces bleeding and contributes to an enhanced abrasion resistance provided that an adequate curing procedure is followed.6. SBR latex addition increases air entrainement (despite the antifoam agent in the formula).
About the Company
Year of Establishment2005
Legal Status of FirmPartnership
Nature of BusinessService Provider
Number of Employees11 to 25 People
Annual TurnoverRs. 2 - 5 Crore
IndiaMART Member SinceMar 2015
Incepted in the year 2005, Alm Dura Build has been into the business from more than a decade. Being a Partnership entity, our organization is engaged in executing its entire business activities from Chennai, Tamil Nadu (India) since its establishment in the year 2005. We are the prominent service provider for various types of construction services such as Building Construction Service, Commercial Renovation Service, Civil Construction Service and many more. We are also trader and supplier of Lightweight Blocks. Our quality integrated range is the output of the combination of the hard work of our hard-working manpower and the contemporary techniques that we own as our pride. We accept payments via cash cheques and demand drafts. We believe that our customers are our most valuable asset and we make sure that they receive what they deserve and that is the best. During our tenure of 10 years in the industry, it has made us to further improve and provide the finest. We have successfully achieved our customer’s happiness and strength from our services.