Study and Application of a Modified Agent GHPC-1 for Green High-Performance Concrete

Abstract:

A modified agent GHPC-1 for green high-performance concrete was composed of the strength-increasing groups of organic alcohol amine, the slump-retaining groups of carboxylate polymer and the workability-stabilizing groups of amide. It could be used through substituting some of polycarboxylate water-reducers or combining with polycarboxylate water-reducers to modify the workability of fresh concrete and to increase the strength of hardened concrete. The adaptability tests of cementing materials with admixtures show that the dispersing ability was almost not influenced but the retaining ability of paste flowing was evidently enhanced if the substitution of polycarboxylate water-reducers have been to 20 %. The comparative tests of concrete indicated that as 20 % content of GHPC-1 was added in polycarboxylate water-reducers, it could modify the concrete workability. If adding 0.6 % with polycarboxylate water-reducers it could save water by 5 % and cement 10 % and simultaneously modify the workability and to enhance the strength, or to reduce water by 2.5 % and increase the strength of 28 d by 5~8 MPa.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 1955-1960
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.1955
• Online since: June 2012
• Authors: wang qin, Chong Zhi Li, Jun Chao Liu, Mo Yi Xu
• Keywords: Green High-Performance Concrete, Modified Agent, Strength, Workability

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