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由省建材所和诸暨县工科所共同试制的石煤渣小型砌块已于最近在杭州通过技术鉴定。这种石煤渣小型砌块是用石煤烧石灰的废渣经轮碾、成型、蒸养等制成的,砌块的强度可达75#以上。其生产成本很低,例如余杭县鸬鸟煤矿试生产的这种砌块82年的生产成本每块为0.21元,售价每块0.24元,而诸暨五一公社王村大队用手工生产的砌块,生产成本每块仅为0.188元,售价每块为0.20元,以每块砌块抵十块标准砖计,售价要低44.51%。据诸暨当地农民反映,用这种砖造的墙,造价和当地的沙石墙相似,而且省工、省时,缩短工期。
The small blocks of stone coal cinder that were co-produced by the Provincial Institute of Building Materials and the Zhuji Engineering Institute have recently passed technical appraisal in Hangzhou. This kind of stone cinder block is made of stone coal burned lime residue by round grinding, molding, steam curing, etc. The strength of the block can reach more than 75#. Its production cost is very low. For instance, the 82-year production cost of trials of the ostrich coal mine in Yuhang County was 0.21 yuan each, which was sold at a price of 0.24 yuan per block. The Wangcun Brigade of Zhuji Wuyi Co., Ltd. used manual production to build blocks. Block, the production cost is only 0.188 yuan per block, the price is 0.20 yuan per block, each block to block 10 standard bricks, the price is lower 44.51%. According to local farmers in Zhuji, the use of such a brick-made wall is similar to local sand and stone walls, and it saves labor and time, shortening the construction period.