CN108002811A - 一种轻质保温抗压混凝土砌块砖的制备方法 - Google Patents

一种轻质保温抗压混凝土砌块砖的制备方法 Download PDF

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CN108002811A
CN108002811A CN201711033126.9A CN201711033126A CN108002811A CN 108002811 A CN108002811 A CN 108002811A CN 201711033126 A CN201711033126 A CN 201711033126A CN 108002811 A CN108002811 A CN 108002811A
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Abstract

本发明公开了一种轻质保温抗压混凝土砌块砖的制备方法,包括如下步骤:将建筑固体垃圾、玄武岩、竹炭粉、蔗糖、水混合研磨均匀,送入聚四氟乙烯反应釜中,升温,保温,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;向预处理建筑固体垃圾中加入玉米芯粉、玻璃纤维、硫酸钙晶须、红薯粉、糯米粉混合研磨均匀,加水,升温,搅拌,压坯,干燥,煅烧,冷却得到轻质保温抗压混凝土砌块砖。本发明采用建筑固体垃圾制作出符合国家标准的混凝土砌块砖,解决了建筑固体垃圾含量高导致抗压强度低,保温隔热效果差,破损率的缺点,解决了建筑固体垃圾给城市带来污染的问题。

Description

一种轻质保温抗压混凝土砌块砖的制备方法
技术领域
本发明涉及混凝土砌块砖技术领域,尤其涉及一种轻质保温抗压混凝土砌块砖的制备方法。
背景技术
建筑固体垃圾是从煤燃烧后的烟气中收捕下来的细灰,建筑固体垃圾是燃煤电厂排出的主要固体废物,其主要氧化物组成为:SiO2、Al2O3、FeO、Fe2O3、CaO、TiO2等。随着电力工业的发展,燃煤电厂的建筑固体垃圾排放量逐年增加,成为我国当前排量较大的工业废渣之一,假如大量的建筑固体垃圾不加处理,就会产生扬尘,污染大气;若排入水系会造成河流淤塞,而其中的有毒化学物质还会对人体和生物造成危害。
而粘土砖以粘土为主要原料,经泥料处理、成型、干燥和焙烧而成,在建筑工程施工中,国家越来越限制使用粘土制品,多采用混凝土砌块砖,但混凝土砌块收缩稳定性差,容易开裂。
如果将建筑固体垃圾资源化利用,添加至混凝土砌块砖中,将极大的保护耕作土地,但目前采用建筑固体垃圾制备混凝土砌块砖存在抗压强度低,保温隔热效果差的问题,亟待解决。
发明内容
基于背景技术存在的技术问题,本发明提出了一种轻质保温抗压混凝土砌块砖的制备方法,采用建筑固体垃圾制作出符合国家标准的混凝土砌块砖,解决了建筑固体垃圾含量高导致抗压强度低,保温隔热效果差,破损率的缺点,解决了建筑固体垃圾给城市带来污染的问题。
本发明提出的一种轻质保温抗压混凝土砌块砖的制备方法,包括如下步骤:
S1、将建筑固体垃圾、玄武岩、竹炭粉、蔗糖、水混合研磨均匀,送入聚四氟乙烯反应釜中,升温,保温,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;
S2、向预处理建筑固体垃圾中加入玉米芯粉、玻璃纤维、硫酸钙晶须、红薯粉、糯米粉混合研磨均匀,加水,升温,搅拌,压坯,干燥,煅烧,冷却得到轻质保温抗压混凝土砌块砖。
优选地,S1中,升温至150-180℃,保温20-30h。
优选地,S1中,建筑固体垃圾、玄武岩、竹炭粉、蔗糖的重量比为30-60:3-6:2-6:5-15。
优选地,S1中,按重量份将30-60份建筑固体垃圾、3-6份玄武岩、2-6份竹炭粉、5-15份蔗糖、80-95份水混合研磨均匀,送入聚四氟乙烯反应釜中,升温至150-180℃,保温20-30h,冷却至室温,过滤,干燥得到预处理建筑固体垃圾。
优选地,S2中,加水至含水量为8-18wt%,升温至70-80℃,搅拌20-50min。
优选地,S2中,压坯的压力为20-26MPa。
优选地,S2中,干燥温度为90-95℃,干燥时间为2-4h,煅烧温度为1000-1200℃,煅烧时间为3-6h。
优选地,S2中,按重量份向100份预处理建筑固体垃圾中加入1-5份玉米芯粉、4-12份玻璃纤维、1-3份硫酸钙晶须、1-3份红薯粉、1-3份糯米粉混合研磨均匀,加水至含水量为8-18wt%,升温至70-80℃,搅拌20-50min,压坯,压力为20-26MPa,90-95℃干燥2-4h,1000-1200℃煅烧3-6h,冷却得到轻质保温抗压混凝土砌块砖。
本发明采用蔗糖与建筑固体垃圾、玄武岩、竹炭粉研磨均匀后,送入聚四氟乙烯反应釜,蔗糖在聚四氟乙烯反应釜碳化,并与建筑固体垃圾、玄武岩、竹炭粉高度分散,不仅弥补了建筑固体垃圾抗压强度低的缺点,而且进一步与玉米芯粉、玻璃纤维复配,并在硫酸钙晶须、红薯粉、糯米粉的作用下粘结成型效果极好,经过烧结后,内部形成大量疏松空洞结构,保温效果好,并可明显减轻砖体的重量。
本发明的导热系数为0.12W/m.K时,耐压强度不低于15MPa,密度为0.35-0.39g/cm3,可减轻砖体20-29%的重量,破损率不超过0.8%。
本发明根据国家推广的新型环保的理念,采用建筑固体垃圾制作出符合国家标准的混凝土砌块砖,解决了建筑固体垃圾含量高导致抗压强度低,保温隔热效果差,破损率的缺点,解决了建筑固体垃圾给城市带来污染的问题。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种轻质保温抗压混凝土砌块砖的制备方法,包括如下步骤:
S1、将建筑固体垃圾、玄武岩、竹炭粉、蔗糖、水混合研磨均匀,送入聚四氟乙烯反应釜中,升温,保温,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;
S2、向预处理建筑固体垃圾中加入玉米芯粉、玻璃纤维、硫酸钙晶须、红薯粉、糯米粉混合研磨均匀,加水,升温,搅拌,压坯,干燥,煅烧,冷却得到轻质保温抗压混凝土砌块砖。
实施例2
一种轻质保温抗压混凝土砌块砖的制备方法,包括如下步骤:
S1、按重量份将30份建筑固体垃圾、6份玄武岩、2份竹炭粉、15份蔗糖、80份水混合研磨均匀,送入聚四氟乙烯反应釜中,升温至180℃,保温20h,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;
S2、按重量份向100份预处理建筑固体垃圾中加入5份玉米芯粉、4份玻璃纤维、3份硫酸钙晶须、1份红薯粉、3份糯米粉混合研磨均匀,加水至含水量为8wt%,升温至80℃,搅拌20min,压坯,压力为26MPa,90℃干燥4h,1000℃煅烧6h,冷却得到轻质保温抗压混凝土砌块砖。
实施例3
一种轻质保温抗压混凝土砌块砖的制备方法,包括如下步骤:
S1、按重量份将60份建筑固体垃圾、3份玄武岩、6份竹炭粉、5份蔗糖、95份水混合研磨均匀,送入聚四氟乙烯反应釜中,升温至150℃,保温30h,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;
S2、按重量份向100份预处理建筑固体垃圾中加入1份玉米芯粉、12份玻璃纤维、1份硫酸钙晶须、3份红薯粉、1份糯米粉混合研磨均匀,加水至含水量为18wt%,升温至70℃,搅拌50min,压坯,压力为20MPa,95℃干燥2h, 1200℃煅烧3h,冷却得到轻质保温抗压混凝土砌块砖。
实施例4
一种轻质保温抗压混凝土砌块砖的制备方法,包括如下步骤:
S1、按重量份将40份建筑固体垃圾、5份玄武岩、3份竹炭粉、12份蔗糖、85份水混合研磨均匀,送入聚四氟乙烯反应釜中,升温至170℃,保温22h,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;
S2、按重量份向100份预处理建筑固体垃圾中加入4份玉米芯粉、6份玻璃纤维、2.5份硫酸钙晶须、1.5份红薯粉、2.5份糯米粉混合研磨均匀,加水至含水量为10wt%,升温至78℃,搅拌30min,压坯,压力为24MPa,92℃干燥3.5h,1050℃煅烧5h,冷却得到轻质保温抗压混凝土砌块砖。
实施例5
一种轻质保温抗压混凝土砌块砖的制备方法,包括如下步骤:
S1、按重量份将50份建筑固体垃圾、4份玄武岩、5份竹炭粉、8份蔗糖、90份水混合研磨均匀,送入聚四氟乙烯反应釜中,升温至160℃,保温28h,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;
S2、按重量份向100份预处理建筑固体垃圾中加入2份玉米芯粉、10份玻璃纤维、1.5份硫酸钙晶须、2.5份红薯粉、1.5份糯米粉混合研磨均匀,加水至含水量为16wt%,升温至72℃,搅拌40min,压坯,压力为22MPa,94℃干燥2.5h, 1150℃煅烧4h,冷却得到轻质保温抗压混凝土砌块砖。
实施例6
一种轻质保温抗压混凝土砌块砖的制备方法,包括如下步骤:
S1、按重量份将45份建筑固体垃圾、4.5份玄武岩、4份竹炭粉、10份蔗糖、88份水混合研磨均匀,送入聚四氟乙烯反应釜中,升温至165℃,保温25h,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;
S2、按重量份向100份预处理建筑固体垃圾中加入3份玉米芯粉、8份玻璃纤维、2份硫酸钙晶须、2份红薯粉、2份糯米粉混合研磨均匀,加水至含水量为13wt%,升温至75℃,搅拌35min,压坯,压力为23MPa,93℃干燥3h,110℃煅烧4.5h,冷却得到轻质保温抗压混凝土砌块砖。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。

Claims (8)

1.一种轻质保温抗压混凝土砌块砖的制备方法,其特征在于,包括如下步骤:
S1、将建筑固体垃圾、玄武岩、竹炭粉、蔗糖、水混合研磨均匀,送入聚四氟乙烯反应釜中,升温,保温,冷却至室温,过滤,干燥得到预处理建筑固体垃圾;
S2、向预处理建筑固体垃圾中加入玉米芯粉、玻璃纤维、硫酸钙晶须、红薯粉、糯米粉混合研磨均匀,加水,升温,搅拌,压坯,干燥,煅烧,冷却得到轻质保温抗压混凝土砌块砖。
2.根据权利要求1所述轻质保温抗压混凝土砌块砖的制备方法,其特征在于,S1中,升温至150-180℃,保温20-30h。
3.根据权利要求1所述轻质保温抗压混凝土砌块砖的制备方法,其特征在于,S1中,建筑固体垃圾、玄武岩、竹炭粉、蔗糖的重量比为30-60:3-6:2-6:5-15。
4.根据权利要求1所述轻质保温抗压混凝土砌块砖的制备方法,其特征在于,S1中,按重量份将30-60份建筑固体垃圾、3-6份玄武岩、2-6份竹炭粉、5-15份蔗糖、80-95份水混合研磨均匀,送入聚四氟乙烯反应釜中,升温至150-180℃,保温20-30h,冷却至室温,过滤,干燥得到预处理建筑固体垃圾。
5.根据权利要求1所述轻质保温抗压混凝土砌块砖的制备方法,其特征在于,S2中,加水至含水量为8-18wt%,升温至70-80℃,搅拌20-50min。
6.根据权利要求1所述轻质保温抗压混凝土砌块砖的制备方法,其特征在于,S2中,压坯的压力为20-26MPa。
7.根据权利要求1所述轻质保温抗压混凝土砌块砖的制备方法,其特征在于,S2中,干燥温度为90-95℃,干燥时间为2-4h,煅烧温度为1000-1200℃,煅烧时间为3-6h。
8.根据权利要求1所述轻质保温抗压混凝土砌块砖的制备方法,其特征在于,S2中,按重量份向100份预处理建筑固体垃圾中加入1-5份玉米芯粉、4-12份玻璃纤维、1-3份硫酸钙晶须、1-3份红薯粉、1-3份糯米粉混合研磨均匀,加水至含水量为8-18wt%,升温至70-80℃,搅拌20-50min,压坯,压力为20-26MPa,90-95℃干燥2-4h,1000-1200℃煅烧3-6h,冷却得到轻质保温抗压混凝土砌块砖。
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