試驗中采用混凝土的原始組成(第1号組成)如下:水泥280公斤/公方;砂763公斤/公方;礫石1144公斤/公方;沒有加黄土攙合料。加水195公升/公方,可塑性Sl=7.5公分(按阿勃拉姆司錐形体)。已經研究出,在加黄土攙台料(2及4号組成)和不加(3及5号組成)黄土攙合料情况下,降低水泥用量25—50%对1号混凝土的影响。黄土攙合料用量是以簡单的計算决定的;对2号组成 The original composition of the concrete used in the test (composition No. 1) was as follows: cement 280 kg / square; sand 763 kg / square; gravel 1144 kg / square; no added loess admixture. Add water 195 liters / square, plasticity Sl = 7.5 cm (according to the Abraam Division cone). It has been found that the effect of reducing the amount of cement by 25-50% on Concrete No. 1 is achieved with the addition of loess mixing station (No. 2 and No. 4) and without (No. 3 and No. 5) loess admixtures. Loess admixtures dosage is determined by a simple calculation; on the 2nd composition