耐碱玻璃纤维增强陶粒泡沫混凝土力学性能研究

Study on Mechanical Properties of Ceramic Foam Concrete Reinforced by Alkali-resistant Glass Fiber

以水泥、粉煤灰、陶粒、细砂、耐碱玻璃纤维和动物发泡剂为原料,制作干密度等级为B08级的泡沫混凝土试件。首先采用单因素实验研究水胶比、粉煤灰取代量、陶粒与细砂掺量以及泡沫掺量对泡沫混凝土干密度、立方体抗压强度、吸水率的影响规律,并确定各物料掺量范围。然后通过四因素三水平正交试验研究各物料掺量对立方体抗压强度、劈裂抗拉强度以及导热系数的影响规律,确定最佳配合比为A1B1C2D1:水胶比为0.35,粉煤灰取代量为5%,陶粒掺量为15%,细砂掺量为10%,发泡剂掺量为3%。最后在最佳配合比的基础上掺加耐碱玻璃纤维,测定其掺量对立方体抗压强度、劈裂抗拉强度以及导热系数的影响规律,确定最佳掺量。

Cement concrete,fly ash,ceramsite,fine sand,alkali-resistant glass fiber and animal foaming agent were used as raw materials to produce foam concrete specimens with a dry density grade of B08.Firstly,single factor experiments were used to study the effect of water-binder ratio,fly ash substitution,ceramic and fine sand content,and foam content on the density,the compressive strength and water absorption of foam concrete.And determine the range of each material.Then,the effect of the content of each material on the compressive strength,splitting tensile strength,and thermal conductivity of the cube was studied by four-factor and three-level orthogonal test.And determine the best mix ratio for A1B1C2D1:The water-binder ratio was 0.35,the fly ash substitution amount was 5%,the ceramsite content was 15%,the fine sand content was 10%,and the blowing agent content was 3%.Finally,based on the best mix ratio,add alkali-resistant glass fiber to determine the effect of the addition amount on compressive strength,split tensile strength and thermal conductivity of cubic.And determine the best dosage.