Concrete adhesive

EXPERIMENTAL CHARACTERIZATION OF CARBON-FIBER/CONCRETE ADHESIVE INTERFACE FOR RETROFITTING OF CONCRETE BRIDGE STRUCTURES... 

Experimental Characterization of Carhon-Fiher/Concrete Adhesive Interface... 

The only satisfactory manhole design is one that is monolithic. It is a waste of time and money to try to build one from block or brick. A monolithic manhole should be formed and cast, properly reinforced, of concrete in which all pours are wet to wet or the cold seams protected by a continuous water-stop and a concrete adhesive employed on each wet to dry pour. Such design requires that the bottom slab be an integral part of the structure. The next alternative is to... 

ELP. [Morton IntT.] Epoxy terminated polysulfide polymers as concrete adhesives, for chemically resistant linings and coatings, bonding to metallic substrates, moi fier for other resins. 

Table 3 Liquid Polysulfide-Epoxy Concrete Adhesive Formulations... 

Chem. Descrip. Uncatalyzed mercaptan polymer Uses Epoxy hardener, accelerator tor amides, amines, and amido-amines in conventional and high-solids applies., fast-set concrete adhesives, castings, potting, laminates Features Requires amine catalyst tor activation Properties Gardner 2 max. color sp.gr. 1.15 dens. 9.6 Ib/gal vise. 100-150 poise gel time 4.5-6.5 min (30-50 g) After 7 day 25 C cure tens, str. 5900 psi elong. 3.75% flex. str. 10,000 psi 100% solids Capcure 40 sec HV [Cognis/Coatings Inks]... 

Chem. Descrip. Mercaptan polymer precatalyzed, accelerated Uses Epoxy hardener, accelerator in concrete adhesives, grouts, mortars, and coatings co-curative improves bond to glass and metal Features Fast cure eliminates induction times of polyamides and amido-amines... 

Uses Accelerator, epoxy curing agent for industrial coatings, conventional and high-solids applies., tast-set concrete adhesives, castings, potting, laminates... 

Chem. Descrip. Epoxy terminated polysultide polymer Uses Modifier for epoxy resins in concrete adhesives, chemically resist, linings or coatings, bonding to metallic substrates with oily finishes Eltesol SC 40 [Huntsman Surf. Sciences]... 

Uses Epoxy modifier for adhesives, potting and encapsulating compds., concrete adhesives and coatings... 

It is preferable to maintain continuous pouring of the concrete, wet to wet. If not possible, continuous water stops must be provided when pouring wet to dry. Concrete adhesives applied to the dry face before pouring are beneficial. 

PVAC adhesives are found in a dozen construction applications. The largest is ready-mix joint cements for gypsum board. These are highly filled formulations with a polymer content of only 3 %. Concrete adhesives containing PVAC serve to bond new concrete to old. Vinyl acetate-ethylene is the material of choice for vinyl and paper lamination to haidboard, gypsum board, and other substrates. Installation of vinyl flooring may be accomplished with PVAC adhesives. 

Epoxy Concrete Adhesive Room Temperature Cure General Use ... 

Four mechanisms contribute to the shear resistance at the interface concrete-to-concrete adhesion, concrete-to-concrete friction (Fig. 4a), the connecting action from either steel bars placed across the interface between the old and the new concrete (Fig. 4b), and bent-down bars welded between the bars of the old and the new crmcrete (Fig. 4c Dritsos 2007). These four mechanisms can be subdivided into the two groups of unreinforced and reinforced interfaces, depending on whether or not additional steel is placed across the interface or welded between the bars of the old and the new concrete (Dritsos 2007). 

USA Proposed ACI Standard 503.2-79, Standard specification for bonding plastic concrete to hardened concrete adhesive. 

Uses Defoamerfor pulp and paper, drilling muds, cements and concrete, adhesives, inks, paints, textile processing, detergent solutions, emulsion polymerization processes... 

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