六百二十八章 奇怪的白墙

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 “头儿,我从小没爹,一直把您当爹!...我要是能当上工匠大师,一定给您养老!”
    “哈,我又不是没儿子!炭鸟啊,你以后啊,只要对得起我就行喽!...”
    看到这,科斯卡奇咧嘴大笑,心底颇为受用。他伸出手,重重拍了拍炭鸟的肩膀,笑着道。
    “好好干,你还年轻!二十多岁的工匠大师啊,也得亏你跟了我!...你要是能入了殿下的眼,那说不定还有机会,去神威大学里走上一遭!”
    “啊,神威大学?那是什么地方?”
    听到这,炭鸟有些发愣,黑乎乎的脸上透着困惑。他从小就没有爹,家里穷的厉害,母亲都改嫁了。等做了工匠学徒后,就归窑场里的师傅,和家里没关系了。至于这什么大学,那是根本没听过的。
    “哈!那里啊,是让杂草一跃,长成玉米的地方!你要是运道好,说不准啊,还能沾上可可的边...”
    科斯卡奇笑着摇头。他伸出手,摸了摸炭鸟的头,神情一肃。
    “这个说来都远。眼下最要紧的,就是把殿下交代的水泥,真的弄出来!...我问你,修这墙时混的灰,你要是再看到,能认出来吗?”
    “头儿,肯定能!”
    炭鸟重重点头,笑着回话。
    “它是灰白的,呛人。细碎像沙子,很硬,水里也化不开。为了记住那灰,我舔过好些次,表面是黑曜石碎渣一样,把舌头都划破了...那味道,我一辈子都能记得!”
    听到这,科斯卡奇眉头一扬,满意一笑。对于徒弟这种狠劲,他很满意。
    “穷苦人家出来,没这股狠劲,拿什么和其他人争?...”
    想到此处,科斯卡奇又有些发愁,自己的两个儿子,其他都不缺,就差这股心气。等他再看向徒弟炭鸟,眼神就柔和了些,真心实意的提醒道。
    “炭鸟,你记住啦!哪怕时间长些,只要这墙,最后能硬如砖石,就能给殿下一个满意的交代!而殿下满意了,你也就发达喽!”
    “是,头儿,都听您的!我这就早晚一次,给这墙浇水!”
    炭鸟连连点头,一边说着,一边又拿起水瓢,浇了墙壁的另一面。
    “嗯?你这浇水的法子...”
    看到这,科斯卡奇又皱起眉头。殿下说的清清楚楚,水泥几天就好,加水只在头几天。水多了加灰,灰多了再加水,硬透了就停下。但这炭鸟弄得...
    “头儿,您放心!我都试了一个多月了,就要不停加水!这墙像活的一样,一直在吸水的,吸完就变硬。这里面啊,说不定关着个水中精怪,不然软泥咋会变成硬石头!”
    炭鸟咧嘴一笑,笑容灿烂而自信。这堵墙,他都摸了几千上万遍,确实像活得一样,每天都在变。里面要是真藏着个精怪,最好是个女的...
    科斯卡奇伸出手,又摸了摸墙的两面。他百思不得其解,确实是加水的一面硬。好一会后,他才摆了摆手。
    “行吧!你自己拿主意,做成了是你的功劳。做不成,可不要怪我,没给你机会!”
    “谢谢头儿!”
    响亮的声音,在营地中响起,在白墙前环绕,还带着几分欢快。师徒两个摸着石头,闭着眼睛过河,却是真的走出了,能够改变王国,甚至改变天下的一步!
    要是修洛特在这里,看到这堵白墙,仔细研究一会,大概就会有一种明悟。这正是他要的水泥,不是后世最先出现的波特兰水泥,而是已经出现一千多年的罗马水泥!
    波特兰水泥,也就是普通硅酸盐水泥,是后世农村最常见的一种水泥,烧制的难度也最低。大体的制造过程,就是石灰石和黏土一起磨成生料,然后把生料煅烧至部分或全部熔融,称为熟料。最后熟料加上铁粉或铁矿渣,磨碎了就是水泥。
    制作水泥,其他的步骤都能用人力来解决。唯有烧制的过程,需要1500度以上的高温,消耗大量的燃料!高温1500度,在后世很容易达到,在这个时代却很难。要是算上消耗的木炭与人力成本,乘以巨量的需求,那就是眼下的王国,完全无法承受的!
    硅酸盐水泥的主要成分,就是硅酸钙。它和水反应后,会产生水化硅酸钙(csh)和氢氧化钙。而真正决定水泥硬度的,就是水化硅酸钙。嗯,简单不负责任的来说,生成的水化硅酸钙越多,凝固的水泥就会越硬,强度越高。
    而罗马水泥的硬化过程,也是要形成生水化硅酸钙。它制造的过程,不用烧,是在常温下,由生石灰+火山灰+水混合。这里火山灰的主要成分,则是火山运动喷发出的氧化硅。也就是说,氧化硅+氢氧化钙+水,最后还是生成水化硅酸钙。
    只是这种反应过程,要温和缓慢的多,也要不断的消耗水分。但最终的强度,即产生的水化硅酸钙凝胶,往往要高于硅酸盐水泥。也就是说,越往后,它的强度就会越高,而且不怕水
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