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首页> 外文期刊>Magazine of Concrete Research >Mechanical and durability properties of magnesium silicate hydrate binder concrete
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Mechanical and durability properties of magnesium silicate hydrate binder concrete

机译：硅酸镁水合物粘合剂混凝土机械和耐久性性能

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摘要

Mechanical and durability properties of concrete made with magnesium-silicate-hydrate (M-S-H) binder systems were tested in comparison with Portland cement. The M-S-H binary binder system included 60% magnesium oxide (MgO) and 40% silicon oxide (SiO2), while the ternary system replaced 10% of the M-S-H binder with 10% crushed quartz filler. It was found that the compressive strength of M-S-H concrete samples at 28 d was approximately 40 MPa with little further increase after this age. The M-S-H concrete had lower tensile strengths and modulus of elasticity than Portland cement control samples. The stress-strain relationship of the M-S-H concrete showed an unusual non-linear relationship at a loading range up to 40% of the compressive strength. The porosity and permeability of concrete using M-S-H binders were higher than Portland cement. The addition of crushed quartz filler was shown to improve microstructure and mechanical and durability properties of M-S-H binder concrete for potential structural applications.
机译：与波特兰水泥相比，用硅酸盐 - 水合物（M-S-H）粘合剂体系制成的混凝土机械和耐久性性能。 M-S-H二进制粘合剂系统包括60％氧化镁（MgO）和40％氧化硅（SiO 2），而三元体系将10％的M-S-H粘合剂用10％粉碎的石英填充物代替10％。结果发现，在28d下的M-S-H混凝土样品的抗压强度约为40MPa，此时龄段几乎没有进一步增加。 M-S-H混凝土的拉伸强度较低，弹性模量比波特兰水泥对照样品。 M-S-H混凝土的应力 - 应变关系在负载范围内显示出不寻常的非线性关系，高达40％的抗压强度。使用M-S-H粘合剂的混凝土的孔隙率和渗透率高于波特兰水泥。显示添加粉碎的石英填料，提高M-S-H粘合剂混凝土的微观结构和耐久性，用于潜在的结构应用。

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