Fly ash geopolymer concrete durability to sulphate, acid and peat attack

The durability of concrete has a profound impact on the service life structural elements. Indonesia extensive peat soils, which provide highly aggressive environment for structures. Geopolymer demonstrated good when exposed to acid /sulphate conditions similar those encountered in soils. This paper investigates performance geopolymer concretes produced using Indonesian type F fly ash under sulphate and chemical attack. specimens have been 12-months range solutions: 5% sodium sulphate, magnesium 1% 3% sulphuric acid, simulated solution. mechanical properties together with control monitored compressive strength, change mass, water absorption volume permeable voids, ultra pulse velocity, air permeability, pH profile, microstructural analysis (XRD, SEM/EDS). immersed achieved 56.93 MPa at age. Magnesium exposure had significant deterioration strength concrete, demonstrating an 11% reduction while 8.9% increase strength. Specimens solution displayed slightly increased 1.2% 4.5% decrease respectively. In general, high level resistance against