Abstract

A method of direct low-temperature synthesis of a silicate binder made of technological waste (silica refractory brick) has been developed. The possibility of application of this binder for the production of water-resistant and durable building products based on cheap mineral raw materials (sand, sand clay) and refractory wastes (chamotte) is shown. The samples of building products based on chamotte become water resistant after heat treatment at 150°C and higher; those based on sand and sandy loam become water resistant after heat treatment at 300°C and higher. A comparative analysis of the strength characteristics of the obtained products with the characteristics of silica (GOST 379-95) and ceramic (GOST 530-2012) bricks is conducted. The developed products have the following physicomechanical characteristics, which are recommended for the products for constructional purposes: compressive strength (MPa) of samples based on chamotte—(59.6 ± 4.2)–(95.9 ± 8.2); sandy loam—(37.8 ± 2.1)–(64.2 ± 5.9); sand—(57.0 ± 4.0)–(89.6 ± 6.8); bending strength (MPa), (6.0 ± 0.4)–(12.2 ± 0.9); 4.7 ± 0.4; (7.6 ± 0.6)–(9.7 ± 0.9); abrasion (g/cm²), 0.36–0.49; 0.50; 0.15–0.54, respectively.

中文翻译：

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硅质耐火砖及建筑产品废料中的硅酸盐粘结剂的依据

摘要

已经开发了一种直接低温合成由技术废料（硅质耐火砖）制成的硅酸盐粘合剂的方法。显示了这种粘合剂可用于生产基于廉价矿物原料（沙子，沙子粘土）和耐火废料（软陶土）的耐水且耐用的建筑产品的可能性。基于黏土的建筑产品样品在150°C或更高温度下热处理后会变得耐水；在300°C及更高温度下进行热处理后，那些基于沙子和沙壤土的砂浆变得耐水。对所得产品的强度特性与二氧化硅（GOST 379-95）和陶瓷（GOST 530-2012）砖的特性进行了比较分析。所开发的产品具有以下物理机械特性，推荐用于建筑目的的产品：基于黏土的样品抗压强度（MPa）-（59.6±4.2）-（95.9±8.2）；沙质壤土-（37.8±2.1）–（64.2±5.9）；沙子-（57.0±4.0）–（89.6±6.8）；抗弯强度（MPa），（6.0±0.4）–（12.2±0.9）；4.7±0.4；（7.6±0.6）–（9.7±0.9）；磨耗（克/厘米²），0.36-0.49；0.50；分别为0.15-0.54。