PROBLEM TO BE SOLVED: To provide a weed-proof material which achieves short hardening time and high initial strength development, and where resistance against initial freezing damage and cracks is imparted so that labor for mowing can be reduced and that long-lasting weed-control can be ensured, and a method of using the same.SOLUTION: (1) A weed-proof material includes calcium aluminate of a Blane specific surface area value of 2500 cm2/g or more and cement clinker aggregate. (2) The weed-proof material according to (1) further includes at least one kind out of calcium sulfate and soil. (3) The weed-proof material according to (1) or (2) has a coarse particle rate of the clinker aggregate of 1.8-3.5. (4) The weed-proof material according to one of (1)-(3) further includes calcium silicate. (5) A method of using a weed-proof material comprises spreading of the weed-proof material according to one of (1)-(4) over a ground surface and watering on the weed-proof material for covering. (6) A method of using the weed-proof material comprises kneading of the weed-proof material according to one of (1)-(4) and water and spreading over the ground surface for covering.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】硬化時間が短く、初期強度発現性が高く、初期凍害、ひび割れ抵抗性を付与し、草刈の労力を軽減でき、防草の持続性が確保できる防草材及びその使用方法を提供する。【解決手段】(1)ブレーン比表面積値2500cm2/g以上のカルシウムアルミネート、セメントクリンカー骨材を含有してなる防草材、(2)さらに、石膏と土壌のうち一種以上を含有してなる(1)の防草材、(3)クリンカー骨材の粗粒率が1.8~3.5であることを特徴としてなる(1)または(2)の防草材、(4)さらにカルシウムシリケートを含有してなる(1)~(3)のいずれかの防草材、(5)(1)~(4)のいずれかの防草材を地面に敷き詰めてその上に散水して被覆する防草材の使用方法、(6)(1)~(4)のいずれかの防草材を水と練混ぜて地面に敷き詰めて被覆する防草材の使用方法、である。【選択図】なし
