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零点看书吧 > 玄幻小说 > 带着铁路到大明 > 正文 第56章 钢铁之用,老朱对水泥的重视【求追读】

正文 第56章 钢铁之用,老朱对水泥的重视【求追读】(第2页/共3页)

实说得有点口渴了,却也不好向老朱要水喝。

他想了想,便继续道:“此外,钢铁还可用来建房子···”

“建房子?”朱元璋忍不住再次打断刘宽的话,瞪眼道:“用钢铁建房子?这也太奢侈了吧?”

刘宽笑道,“陛下莫要误会,并非整座房子都以钢铁建造,而是以钢铁为筋骨,浇筑水泥混凝土来建造。”

“后世房子大多都是如此造的,且此法还可用来建造堡垒,便是微臣之前所说的红夷大炮,怕是也难轰开。”

朱元璋问,“何为水泥混凝土?”

水泥的事,即便老朱不提,刘宽也是要说的——这可是他这次到六合铁场办差的一大成果。

“回陛下,水泥是后世一种常用的建筑材料,用处类似于此时建城用的糯米灰浆差不多。”

“只不过水泥造价更低,性能却比糯米灰浆强了许多。”

刘宽对“糯米灰浆”这种古代建材是有所了解的。

其以糯米浆、熟石灰为主要材料,有时为了加强其粘合性能,甚至会加入鸡蛋乃至蜂蜜!

糯米、熟石灰价格且不提,古代鸡蛋、蜂蜜价格可都不低——用来做建城的粘合剂,往往用量又颇多,耗费自然也颇高。

至于朱元璋,就更明白糯米灰浆在建造城池、房屋中占据的费用有多高了。

他修建京师城墙、紫禁城时,为了让城墙足够坚固,便让工匠们在糯米灰浆中加入鸡蛋——京师城墙、紫禁城修建好几年才完工,糯米灰浆耗费太大是主要原因之一。

如今听刘宽说有更便宜却性能更好的替代物,朱元璋几乎不敢相信。

“刘宽,你所说可是真的?”

刘宽道,“微臣怎敢欺骗陛下?事实上,此番微臣在六合铁场,已经让工匠试制出了水泥,用于建造炼焦炉、高炉等。”

“水泥已经试制出来了?”朱元璋又双叒惊讶了。

刘宽道,“水泥主要是以石灰、黏土、铁粉为材料,这些东西六合铁场都不缺。微臣又知道水泥的配方及烧制流程,试制自然不难。”

朱元璋稍稍沉吟,又问:“你前面说,以钢铁为筋骨,浇筑水泥可建造堡垒,那什么红夷大炮也轰不破?”

刘宽点头,“只要堡垒建筑结构足够科学合理,确实不惧红夷大炮轰击。”

听刘宽确认,朱元璋当即道:“那这水泥可称得上是军国重器了——其配方及烧制流程你可有保密?”

‘老朱还真是警惕啊。幸亏我早有准备。’

刘宽暗暗感慨了下老朱的敏锐,随即便道:“微臣已经请飞熊卫周千户留下一百人看守水泥厂,亦让烧制水泥的工匠都签署了保密协议。”
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