Strain-hardening geopolymer composite (SHGC) lately emerged as a promising alternative to traditional strain-hardening cementitious composite with added advantage of industrial by-product utilization and enhanced sustainability. However, as the design of SHGC requires multi-factor optimization, application of the traditional trial-and error method is inefficient and hinders the development of this material.

This paper aims at the development of a slag-fly ash based SHGC with low slag content using micromechanical model to guide the composite mixture design. To this end, experimentally characterized physical properties of fiber, matrix and interface are used as input for the micromechanical model, which serves as a predictive tool for the tensile performance of SHGC. Following the guidance, a slag/fly ash based SHGC with tensile strain capacity of 4.8% and ultimate tensile strength above 3.8 MPa was systematically developed. The feasibility and effectiveness of using micromechanics as the design basis of SHGC are demonstrated and experimentally verified.

应变硬化地质聚合物复合材料（SHGC）最近成为一种有希望的替代传统应变硬化水泥复合材料的替代品，具有工业副产品利用和增强的可持续性的额外优势。但是，由于SHGC的设计需要进行多因素优化，因此传统试错法的应用效率低下，并阻碍了该材料的开发。

本文旨在用微力学模型指导渣料粉煤灰低渣SHGC的研制。为此，将纤维，基质和界面的实验表征的物理性质用作微力学模型的输入，该模型可用作SHGC拉伸性能的预测工具。根据指导，系统地开发了基于渣/粉煤灰的SHGC，其拉伸应变能力为4.8％，极限拉伸强度为3.8 MPa以上。演示并通过实验验证了将微力学用作SHGC设计基础的可行性和有效性。