A study on the development of an admixture for early strength development in slope reinforcement grouting

Key Points

• The aim is to develop an effective admixture for early strength development in grouting systems used for slope reinforcement.
• Developed an admixture using four reactive components, with three synthesized at high temperatures and one at room temperature.
• Conducted flow, compressive strength, and pull-off adhesion tests on specimens with varying water-cement ratios.
• Compared the performance of the new admixture with plain and commercial admixtures.
• The DP26 mixture (W/C 26%) achieved flow values comparable to GP40 (W/C 40%) while reducing water consumption by about 35%.
• The 7-day compressive strength of DP26 was 37.75 MPa, showing a 57.9% improvement over GP40.
• Average bond strength from pull-off tests was recorded at 15.55 MPa for the mixture with the new admixture.

Abstract