Compressive Behavior of Joint Mortar on Ultra High Strength Precast Cocrete Columns
By K. Imai, A. Hattori, D. Iwamuro and H. Inada
Concrete Journal, Vo.48, No.2, Feb. 2010
- Synopsis
- A compression test for concrete-mortar-concrete specimens has been developed to investigate the compression behavior of the joint mortar between two ultra-high-strength precast concrete columns. A method for estimating the compressive strength from the strength values of constituent materials is proposed. Long-term loading tests confirmed that the joint mortar remains stable over a long period of time even under high stress. The compression test was also used as a joint mortar strength control test for a practical building. The test results indicate that the newly developed test can be used to obtain reliable strength test results under accuracy conditions of specimen fabrication and precise loading.
- Keywords:
- joint mortar, precast, high strength concrete, compressive strength
