保温轻质混凝土空心砌块——生土组合墙体结构是由EPS混合土为内芯、轻质混凝土砌块为外模组成的一种新型结构形式。本文以该结构形式的内芯材料EPS混合土为研究对象,将EPS、水泥、水作为主要参数,对EPS混合土进行了抗压强度试验研究。通过正交试验设计了16组试件,分析了各因素对混合土抗压强度的影响规律,得出EPS含量对EPS混合土抗压强度的影响最大,水泥含量和用水量次之;给出了各因素与EPS混合土抗压强度之间的关系曲线,得出最佳配合比,最佳水平为:水泥用量30%,EPS用量1%,用水量30%。通过对最优工程条件下真值变动半径的计算,得到了最优配合比的真值变动范围在1.108~2.778之间。
The composite masonry of thermal-insulating lightweight concrete hollow block(is a new type of structure with expanded polystyrenesoil(EPS)as its inner core and the lightweight concrete block as its external model.This paper takes the inner core material-EPS-soil(heterogeneous soil mixed with expanded polystyrene) of this version as its research subject,with EPS,cement and water as its main parameters.Experiment for compressive strength of EPS-soil was carried out.16 groups of samples are designed through the orthogonal test,the influence factors law to compressive strength of EPS-soil has been analyzed.EPS content is the most significant influencing factor in the compressive strength of EPS-soil,with cement content as the less and water content the least influencing factor;the influence factors' relational curves to compressive strength of EPS-soil have been given,and the optimum mix ratio is advanced,that is:cement content 30%,EPS content 1%,water content 30%.Through calculating the truth-value variable radius under optimal project condition,the mobility scale of the optimum mix radio's truth-value was gained between 1.108~2.778.