| 초록 |
In the past two decades, a new group of concrete admixture, termed "superplasticezers", was intriduced to the concrete industry. They have gained wide acceptance because of their many advantages. The addition of superplasticezers to concrete mixes improve the concrete's workability and increases its compressive strength. The three major types of superplasticizing admixtures commercially available are modified lignosulfonates, sulfonated naphthalene-formaldehyde resins, and sulfonated melamine-formaldehyde resins. We investigated that the effect of polymerization conditions of sulfonated-melamine formaldehyde superplasticizers on the workability, mechanical properties and setting of cement mortar. |
